* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 @ 2004-09-08 4:22 Kevin Hilman 2004-09-08 6:39 ` Lee Revell 0 siblings, 1 reply; 25+ messages in thread From: Kevin Hilman @ 2004-09-08 4:22 UTC (permalink / raw) To: linux-kernel I'm running the VP patch on a PII 400MHz to closer approximate an embedded target. I get a 21ms latency trace during boot which dwarfs other latencies and prevents me from seeing any of the later latencies when I'm running my test. The trace (from -R5) is available here: http://hilman.org/kevin/VP/trace-cond_resched.txt At first glance, it appears to be the result of an accumulation of calls to __delay() from the 3c59x vortex driver. Any ideas what's going on here? Is there a way to disable the trace by default and enable it later via /proc? I see that the preemption itself can be disabled via command-line and then enable later via /proc but I don't see the same for the latency trace. Kevin http://hilman.org/ ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-08 4:22 [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 Kevin Hilman @ 2004-09-08 6:39 ` Lee Revell 0 siblings, 0 replies; 25+ messages in thread From: Lee Revell @ 2004-09-08 6:39 UTC (permalink / raw) To: Kevin Hilman; +Cc: linux-kernel On Wed, 2004-09-08 at 00:22, Kevin Hilman wrote: > At first glance, it appears to be the result of an accumulation of > calls to __delay() from the 3c59x vortex driver. Any ideas what's > going on here? > > Is there a way to disable the trace by default and enable it later via > /proc? I see that the preemption itself can be disabled via > command-line and then enable later via /proc but I don't see the same > for the latency trace. echo 0 > /proc/sys/kernel/preempt_max_latency will reset the counter. There is probably no point in fixing boot time latencies. Lee ^ permalink raw reply [flat|nested] 25+ messages in thread
[parent not found: <20040903120957.00665413@mango.fruits.de>]
* [patch] voluntary-preempt-2.6.9-rc1-bk4-R4 [not found] <20040903120957.00665413@mango.fruits.de> @ 2004-09-04 19:51 ` Ingo Molnar 2004-09-05 14:02 ` [patch] voluntary-preempt-2.6.9-rc1-bk12-R5 Ingo Molnar 0 siblings, 1 reply; 25+ messages in thread From: Ingo Molnar @ 2004-09-04 19:51 UTC (permalink / raw) To: Florian Schmidt, K.R. Foley; +Cc: linux-kernel, rlrevell, felipe_alfaro ok, found and fixed the bug reported by K.R. Foley, and found the bug reported by Florian Schmidt as well. the first bug was caused by an unrobustness in cond_resched(). The bug happens when a task that is in do_exit() happens to be preempted via cond_resched() - the TASK_ZOMBIE/TASK_DEAD task state is overwritten with TASK_RUNNING and then the task crashes in the 'final' schedule. To fix this i've changed cond_resched() to be much closer in behavior to preempt_schedule() - this makes sense anyway. Florian's bug triggers if softirq_preemption is disabled: if a softirq still gets delayed to softirqd (this can happen even in the stock kernel, under certain circumstances) then it would be executed without disabling direct softirq execution. While this is safe and intended to make softirqd preemptable when softirq_preemption==1, it's unsafe and an illegal preemption when there are indirect softirqs around. The fix is to properly disable softirqs in this branch too. i've uploaded -R4 which fixes these two bugs: http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk4-R4 other changes in -R4: - add the RX-break-up to e100.c which was promised in -R0 - patch was missing by mistake. - small tweaks to the latency_trace header Ingo ^ permalink raw reply [flat|nested] 25+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc1-bk12-R5 2004-09-04 19:51 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R4 Ingo Molnar @ 2004-09-05 14:02 ` Ingo Molnar 2004-09-06 11:06 ` [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 Ingo Molnar 0 siblings, 1 reply; 25+ messages in thread From: Ingo Molnar @ 2004-09-05 14:02 UTC (permalink / raw) To: Florian Schmidt, K.R. Foley; +Cc: linux-kernel, rlrevell, felipe_alfaro i've released -R5: http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk12-R5 2.6.9-rc1-bk12 patching order is: http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2 + http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc1.bz2 + http://redhat.com/~mingo/voluntary-preempt/patch-2.6.9-rc1-bk12.bz2 Changes in -R5: - merge to 2.6.9-rc1-bk12 - fixed an in_atomic() bug in the SMP && !PREEMPT kernel Ingo ^ permalink raw reply [flat|nested] 25+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-05 14:02 ` [patch] voluntary-preempt-2.6.9-rc1-bk12-R5 Ingo Molnar @ 2004-09-06 11:06 ` Ingo Molnar 2004-09-06 11:48 ` Rafael J. Wysocki 2004-09-08 6:56 ` Lee Revell 0 siblings, 2 replies; 25+ messages in thread From: Ingo Molnar @ 2004-09-06 11:06 UTC (permalink / raw) To: linux-kernel Cc: rlrevell, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson i've released the -R6 patch: http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk12-R6 Changes in -R6: - fixed a CONFIG_SMP + CONFIG_PREEMPT bug that had the potential to cause spinlock related lockups. (UP kernels are unaffected.) This bug got introduced in -R5. 2.6.9-rc1-bk12 patching order is: http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2 + http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc1.bz2 + http://redhat.com/~mingo/voluntary-preempt/patch-2.6.9-rc1-bk12.bz2 Ingo ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-06 11:06 ` [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 Ingo Molnar @ 2004-09-06 11:48 ` Rafael J. Wysocki 2004-09-06 12:25 ` Alexander Nyberg 2004-09-08 6:56 ` Lee Revell 1 sibling, 1 reply; 25+ messages in thread From: Rafael J. Wysocki @ 2004-09-06 11:48 UTC (permalink / raw) To: Ingo Molnar; +Cc: linux-kernel, Andi Kleen [-- Attachment #1: Type: text/plain, Size: 2402 bytes --] On Monday 06 of September 2004 13:06, Ingo Molnar wrote: > > i've released the -R6 patch: > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk12-R6 > > Changes in -R6: > > - fixed a CONFIG_SMP + CONFIG_PREEMPT bug that had the potential to > cause spinlock related lockups. (UP kernels are unaffected.) This bug > got introduced in -R5. > > 2.6.9-rc1-bk12 patching order is: > > http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2 > + http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc1.bz2 > + http://redhat.com/~mingo/voluntary-preempt/patch-2.6.9-rc1-bk12.bz2 I did as instructed, but it didn't compile (on a UP x86-64 system). I got this: CC arch/x86_64/kernel/irq.o arch/x86_64/kernel/irq.c: In function `request_irq': arch/x86_64/kernel/irq.c:498: warning: implicit declaration of function `setup_irq' CC arch/x86_64/kernel/ptrace.o CC arch/x86_64/kernel/i8259.o arch/x86_64/kernel/i8259.c: In function `init_IRQ': arch/x86_64/kernel/i8259.c:570: warning: implicit declaration of function `setup_irq' CC arch/x86_64/kernel/ioport.o CC arch/x86_64/kernel/ldt.o CC arch/x86_64/kernel/setup.o CC arch/x86_64/kernel/time.o arch/x86_64/kernel/time.c: In function `time_init': arch/x86_64/kernel/time.c:820: warning: implicit declaration of function `setup_irq' CC arch/x86_64/kernel/sys_x86_64.o [- snip -] C kernel/hardirq.o kernel/hardirq.c: In function `recalculate_desc_flags': kernel/hardirq.c:314: error: `SA_NODELAY' undeclared (first use in this function) kernel/hardirq.c:314: error: (Each undeclared identifier is reported only once kernel/hardirq.c:314: error: for each function it appears in.) kernel/hardirq.c: In function `generic_setup_irq': kernel/hardirq.c:344: error: `SA_NODELAY' undeclared (first use in this function) kernel/hardirq.c: In function `threaded_read_proc': kernel/hardirq.c:659: error: `SA_NODELAY' undeclared (first use in this function) kernel/hardirq.c: In function `threaded_write_proc': kernel/hardirq.c:677: error: `SA_NODELAY' undeclared (first use in this function) make[1]: *** [kernel/hardirq.o] Error 1 make: *** [kernel] Error 2 The .config is attached. Regards, RJW -- For a successful technology, reality must take precedence over public relations, for nature cannot be fooled. -- Richard P. Feynman [-- Attachment #2: config --] [-- Type: text/plain, Size: 39371 bytes --] # # Automatically generated make config: don't edit # Linux kernel version: 2.6.9-rc1-bk12-VP-R6 # Mon Sep 6 13:39:33 2004 # CONFIG_X86_64=y CONFIG_64BIT=y CONFIG_X86=y CONFIG_MMU=y CONFIG_RWSEM_GENERIC_SPINLOCK=y CONFIG_X86_CMPXCHG=y CONFIG_EARLY_PRINTK=y CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y CONFIG_GENERIC_ISA_DMA=y # # Code maturity level options # CONFIG_EXPERIMENTAL=y CONFIG_CLEAN_COMPILE=y CONFIG_BROKEN_ON_SMP=y # # General setup # CONFIG_SWAP=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_BSD_PROCESS_ACCT_V3=y CONFIG_SYSCTL=y CONFIG_AUDIT=y CONFIG_AUDITSYSCALL=y CONFIG_LOG_BUF_SHIFT=18 CONFIG_HOTPLUG=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y # CONFIG_EMBEDDED is not set CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_ALL is not set # CONFIG_KALLSYMS_EXTRA_PASS is not set CONFIG_FUTEX=y CONFIG_EPOLL=y # CONFIG_PREEMPT_TIMING is not set CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set CONFIG_SHMEM=y # CONFIG_TINY_SHMEM is not set # # Loadable module support # CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_OBSOLETE_MODPARM=y CONFIG_MODVERSIONS=y CONFIG_KMOD=y # # Processor type and features # CONFIG_MK8=y # CONFIG_MPSC is not set # CONFIG_GENERIC_CPU is not set CONFIG_X86_L1_CACHE_BYTES=64 CONFIG_X86_L1_CACHE_SHIFT=6 CONFIG_X86_TSC=y CONFIG_X86_GOOD_APIC=y CONFIG_MICROCODE=m CONFIG_X86_MSR=m CONFIG_X86_CPUID=m CONFIG_X86_IO_APIC=y CONFIG_X86_LOCAL_APIC=y CONFIG_MTRR=y # CONFIG_SMP is not set CONFIG_PREEMPT=y CONFIG_GART_IOMMU=y CONFIG_SWIOTLB=y CONFIG_X86_MCE=y # # Power management options # CONFIG_PM=y CONFIG_SOFTWARE_SUSPEND=y # # ACPI (Advanced Configuration and Power Interface) Support # CONFIG_ACPI=y CONFIG_ACPI_BOOT=y CONFIG_ACPI_INTERPRETER=y CONFIG_ACPI_SLEEP=y CONFIG_ACPI_SLEEP_PROC_FS=y CONFIG_ACPI_AC=y CONFIG_ACPI_BATTERY=y CONFIG_ACPI_BUTTON=y CONFIG_ACPI_FAN=y CONFIG_ACPI_PROCESSOR=y CONFIG_ACPI_THERMAL=y CONFIG_ACPI_ASUS=y # CONFIG_ACPI_TOSHIBA is not set CONFIG_ACPI_DEBUG=y CONFIG_ACPI_BUS=y CONFIG_ACPI_EC=y CONFIG_ACPI_POWER=y CONFIG_ACPI_PCI=y CONFIG_ACPI_SYSTEM=y # # CPU Frequency scaling # CONFIG_CPU_FREQ=y # CONFIG_CPU_FREQ_PROC_INTF is not set CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y # CONFIG_CPU_FREQ_GOV_ONDEMAND is not set # CONFIG_CPU_FREQ_24_API is not set CONFIG_CPU_FREQ_TABLE=m # # CPUFreq processor drivers # CONFIG_X86_POWERNOW_K8=m CONFIG_X86_POWERNOW_K8_ACPI=y # CONFIG_X86_SPEEDSTEP_CENTRINO is not set # CONFIG_X86_ACPI_CPUFREQ is not set # # Bus options (PCI etc.) # CONFIG_PCI=y CONFIG_PCI_DIRECT=y CONFIG_PCI_MMCONFIG=y # CONFIG_UNORDERED_IO is not set # CONFIG_PCI_MSI is not set CONFIG_PCI_LEGACY_PROC=y CONFIG_PCI_NAMES=y # # PCMCIA/CardBus support # CONFIG_PCMCIA=m # CONFIG_PCMCIA_DEBUG is not set CONFIG_YENTA=m CONFIG_CARDBUS=y CONFIG_PD6729=m CONFIG_I82092=m CONFIG_TCIC=m # # PCI Hotplug Support # CONFIG_HOTPLUG_PCI=m CONFIG_HOTPLUG_PCI_FAKE=m CONFIG_HOTPLUG_PCI_ACPI=m # CONFIG_HOTPLUG_PCI_ACPI_IBM is not set CONFIG_HOTPLUG_PCI_CPCI=y CONFIG_HOTPLUG_PCI_CPCI_ZT5550=m CONFIG_HOTPLUG_PCI_CPCI_GENERIC=m # CONFIG_HOTPLUG_PCI_PCIE is not set CONFIG_HOTPLUG_PCI_SHPC=m # CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE is not set # # Executable file formats / Emulations # CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=m CONFIG_IA32_EMULATION=y CONFIG_IA32_AOUT=y CONFIG_COMPAT=y CONFIG_SYSVIPC_COMPAT=y CONFIG_UID16=y # # Device Drivers # # # Generic Driver Options # CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y CONFIG_FW_LOADER=m # CONFIG_DEBUG_DRIVER is not set # # Memory Technology Devices (MTD) # CONFIG_MTD=m # CONFIG_MTD_DEBUG is not set CONFIG_MTD_PARTITIONS=y CONFIG_MTD_CONCAT=m CONFIG_MTD_REDBOOT_PARTS=m # CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set # CONFIG_MTD_REDBOOT_PARTS_READONLY is not set CONFIG_MTD_CMDLINE_PARTS=y # # User Modules And Translation Layers # CONFIG_MTD_CHAR=m CONFIG_MTD_BLOCK=m CONFIG_MTD_BLOCK_RO=m CONFIG_FTL=m CONFIG_NFTL=m CONFIG_NFTL_RW=y CONFIG_INFTL=m # # RAM/ROM/Flash chip drivers # CONFIG_MTD_CFI=m CONFIG_MTD_JEDECPROBE=m CONFIG_MTD_GEN_PROBE=m CONFIG_MTD_CFI_ADV_OPTIONS=y CONFIG_MTD_CFI_NOSWAP=y # CONFIG_MTD_CFI_BE_BYTE_SWAP is not set # CONFIG_MTD_CFI_LE_BYTE_SWAP is not set # CONFIG_MTD_CFI_GEOMETRY is not set CONFIG_MTD_MAP_BANK_WIDTH_1=y CONFIG_MTD_MAP_BANK_WIDTH_2=y CONFIG_MTD_MAP_BANK_WIDTH_4=y # CONFIG_MTD_MAP_BANK_WIDTH_8 is not set # CONFIG_MTD_MAP_BANK_WIDTH_16 is not set # CONFIG_MTD_MAP_BANK_WIDTH_32 is not set CONFIG_MTD_CFI_I1=y CONFIG_MTD_CFI_I2=y # CONFIG_MTD_CFI_I4 is not set # CONFIG_MTD_CFI_I8 is not set CONFIG_MTD_CFI_INTELEXT=m CONFIG_MTD_CFI_AMDSTD=m CONFIG_MTD_CFI_AMDSTD_RETRY=0 CONFIG_MTD_CFI_STAA=m CONFIG_MTD_CFI_UTIL=m # CONFIG_MTD_RAM is not set # CONFIG_MTD_ROM is not set CONFIG_MTD_ABSENT=m # # Mapping drivers for chip access # CONFIG_MTD_COMPLEX_MAPPINGS=y CONFIG_MTD_PHYSMAP=m CONFIG_MTD_PHYSMAP_START=0x8000000 CONFIG_MTD_PHYSMAP_LEN=0x4000000 CONFIG_MTD_PHYSMAP_BANKWIDTH=2 # CONFIG_MTD_PNC2000 is not set CONFIG_MTD_SC520CDP=m # CONFIG_MTD_NETSC520 is not set # CONFIG_MTD_SBC_GXX is not set # CONFIG_MTD_ELAN_104NC is not set CONFIG_MTD_SCx200_DOCFLASH=m CONFIG_MTD_AMD76XROM=m # CONFIG_MTD_ICHXROM is not set CONFIG_MTD_SCB2_FLASH=m # CONFIG_MTD_NETtel is not set # CONFIG_MTD_DILNETPC is not set CONFIG_MTD_L440GX=m CONFIG_MTD_PCI=m # # Self-contained MTD device drivers # CONFIG_MTD_PMC551=m CONFIG_MTD_PMC551_BUGFIX=y # CONFIG_MTD_PMC551_DEBUG is not set CONFIG_MTD_SLRAM=m # CONFIG_MTD_PHRAM is not set CONFIG_MTD_MTDRAM=m CONFIG_MTDRAM_TOTAL_SIZE=4096 CONFIG_MTDRAM_ERASE_SIZE=128 CONFIG_MTD_BLKMTD=m # # Disk-On-Chip Device Drivers # CONFIG_MTD_DOC2000=m CONFIG_MTD_DOC2001=m CONFIG_MTD_DOC2001PLUS=m CONFIG_MTD_DOCPROBE=m CONFIG_MTD_DOCECC=m CONFIG_MTD_DOCPROBE_ADVANCED=y CONFIG_MTD_DOCPROBE_ADDRESS=0x0000 CONFIG_MTD_DOCPROBE_HIGH=y CONFIG_MTD_DOCPROBE_55AA=y # # NAND Flash Device Drivers # CONFIG_MTD_NAND=m CONFIG_MTD_NAND_VERIFY_WRITE=y CONFIG_MTD_NAND_IDS=m CONFIG_MTD_NAND_DISKONCHIP=m CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADVANCED=y CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS=0 CONFIG_MTD_NAND_DISKONCHIP_PROBE_HIGH=y CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE=y # # Parallel port support # CONFIG_PARPORT=m CONFIG_PARPORT_PC=m CONFIG_PARPORT_PC_CML1=m CONFIG_PARPORT_SERIAL=m CONFIG_PARPORT_PC_FIFO=y CONFIG_PARPORT_PC_SUPERIO=y CONFIG_PARPORT_PC_PCMCIA=m CONFIG_PARPORT_OTHER=y CONFIG_PARPORT_1284=y # # Plug and Play support # # # Block devices # # CONFIG_BLK_DEV_FD is not set # CONFIG_PARIDE is not set # CONFIG_BLK_CPQ_DA is not set # CONFIG_BLK_CPQ_CISS_DA is not set # CONFIG_BLK_DEV_DAC960 is not set # CONFIG_BLK_DEV_UMEM is not set CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_CRYPTOLOOP=m # CONFIG_BLK_DEV_NBD is not set # CONFIG_BLK_DEV_SX8 is not set # CONFIG_BLK_DEV_UB is not set CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=128000 CONFIG_BLK_DEV_INITRD=y CONFIG_LBD=y # # ATA/ATAPI/MFM/RLL support # CONFIG_IDE=y CONFIG_BLK_DEV_IDE=y # # Please see Documentation/ide.txt for help/info on IDE drives # # CONFIG_BLK_DEV_IDE_SATA is not set # CONFIG_BLK_DEV_HD_IDE is not set CONFIG_BLK_DEV_IDEDISK=y CONFIG_IDEDISK_MULTI_MODE=y CONFIG_BLK_DEV_IDECS=m CONFIG_BLK_DEV_IDECD=y CONFIG_BLK_DEV_IDETAPE=m CONFIG_BLK_DEV_IDEFLOPPY=m CONFIG_BLK_DEV_IDESCSI=m # CONFIG_IDE_TASK_IOCTL is not set # CONFIG_IDE_TASKFILE_IO is not set # # IDE chipset support/bugfixes # CONFIG_IDE_GENERIC=y # CONFIG_BLK_DEV_CMD640 is not set CONFIG_BLK_DEV_IDEPCI=y CONFIG_IDEPCI_SHARE_IRQ=y CONFIG_BLK_DEV_OFFBOARD=y CONFIG_BLK_DEV_GENERIC=y # CONFIG_BLK_DEV_OPTI621 is not set # CONFIG_BLK_DEV_RZ1000 is not set CONFIG_BLK_DEV_IDEDMA_PCI=y # CONFIG_BLK_DEV_IDEDMA_FORCED is not set CONFIG_IDEDMA_PCI_AUTO=y # CONFIG_IDEDMA_ONLYDISK is not set CONFIG_BLK_DEV_ADMA=y # CONFIG_BLK_DEV_AEC62XX is not set # CONFIG_BLK_DEV_ALI15X3 is not set CONFIG_BLK_DEV_AMD74XX=y # CONFIG_BLK_DEV_ATIIXP is not set # CONFIG_BLK_DEV_CMD64X is not set # CONFIG_BLK_DEV_TRIFLEX is not set # CONFIG_BLK_DEV_CY82C693 is not set # CONFIG_BLK_DEV_CS5520 is not set # CONFIG_BLK_DEV_CS5530 is not set # CONFIG_BLK_DEV_HPT34X is not set # CONFIG_BLK_DEV_HPT366 is not set # CONFIG_BLK_DEV_SC1200 is not set # CONFIG_BLK_DEV_PIIX is not set # CONFIG_BLK_DEV_NS87415 is not set # CONFIG_BLK_DEV_PDC202XX_OLD is not set # CONFIG_BLK_DEV_PDC202XX_NEW is not set # CONFIG_BLK_DEV_SVWKS is not set # CONFIG_BLK_DEV_SIIMAGE is not set # CONFIG_BLK_DEV_SIS5513 is not set # CONFIG_BLK_DEV_SLC90E66 is not set # CONFIG_BLK_DEV_TRM290 is not set # CONFIG_BLK_DEV_VIA82CXXX is not set # CONFIG_IDE_ARM is not set CONFIG_BLK_DEV_IDEDMA=y # CONFIG_IDEDMA_IVB is not set CONFIG_IDEDMA_AUTO=y # CONFIG_BLK_DEV_HD is not set # # SCSI device support # CONFIG_SCSI=m CONFIG_SCSI_PROC_FS=y # # SCSI support type (disk, tape, CD-ROM) # CONFIG_BLK_DEV_SD=m CONFIG_CHR_DEV_ST=m CONFIG_CHR_DEV_OSST=m CONFIG_BLK_DEV_SR=m # CONFIG_BLK_DEV_SR_VENDOR is not set CONFIG_CHR_DEV_SG=m # # Some SCSI devices (e.g. CD jukebox) support multiple LUNs # CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y # # SCSI Transport Attributes # CONFIG_SCSI_SPI_ATTRS=m CONFIG_SCSI_FC_ATTRS=m # # SCSI low-level drivers # # CONFIG_BLK_DEV_3W_XXXX_RAID is not set # CONFIG_SCSI_3W_9XXX is not set # CONFIG_SCSI_ACARD is not set # CONFIG_SCSI_AACRAID is not set # CONFIG_SCSI_AIC7XXX is not set # CONFIG_SCSI_AIC7XXX_OLD is not set # CONFIG_SCSI_AIC79XX is not set # CONFIG_MEGARAID_NEWGEN is not set # CONFIG_MEGARAID_LEGACY is not set # CONFIG_SCSI_SATA is not set # CONFIG_SCSI_BUSLOGIC is not set # CONFIG_SCSI_DMX3191D is not set # CONFIG_SCSI_EATA is not set # CONFIG_SCSI_EATA_PIO is not set # CONFIG_SCSI_FUTURE_DOMAIN is not set # CONFIG_SCSI_GDTH is not set # CONFIG_SCSI_IPS is not set # CONFIG_SCSI_INIA100 is not set # CONFIG_SCSI_PPA is not set # CONFIG_SCSI_IMM is not set # CONFIG_SCSI_SYM53C8XX_2 is not set # CONFIG_SCSI_IPR is not set # CONFIG_SCSI_QLOGIC_ISP is not set # CONFIG_SCSI_QLOGIC_FC is not set # CONFIG_SCSI_QLOGIC_1280 is not set CONFIG_SCSI_QLA2XXX=m # CONFIG_SCSI_QLA21XX is not set # CONFIG_SCSI_QLA22XX is not set # CONFIG_SCSI_QLA2300 is not set # CONFIG_SCSI_QLA2322 is not set # CONFIG_SCSI_QLA6312 is not set # CONFIG_SCSI_QLA6322 is not set # CONFIG_SCSI_DC395x is not set # CONFIG_SCSI_DC390T is not set CONFIG_SCSI_DEBUG=m # # PCMCIA SCSI adapter support # CONFIG_PCMCIA_FDOMAIN=m CONFIG_PCMCIA_QLOGIC=m CONFIG_PCMCIA_SYM53C500=m # # Multi-device support (RAID and LVM) # CONFIG_MD=y # CONFIG_BLK_DEV_MD is not set CONFIG_BLK_DEV_DM=m CONFIG_DM_CRYPT=m CONFIG_DM_SNAPSHOT=m CONFIG_DM_MIRROR=m CONFIG_DM_ZERO=m # # Fusion MPT device support # # CONFIG_FUSION is not set # # IEEE 1394 (FireWire) support # CONFIG_IEEE1394=m # # Subsystem Options # # CONFIG_IEEE1394_VERBOSEDEBUG is not set CONFIG_IEEE1394_OUI_DB=y CONFIG_IEEE1394_EXTRA_CONFIG_ROMS=y CONFIG_IEEE1394_CONFIG_ROM_IP1394=y # # Device Drivers # CONFIG_IEEE1394_PCILYNX=m CONFIG_IEEE1394_OHCI1394=m # # Protocol Drivers # CONFIG_IEEE1394_VIDEO1394=m CONFIG_IEEE1394_SBP2=m CONFIG_IEEE1394_SBP2_PHYS_DMA=y CONFIG_IEEE1394_ETH1394=m CONFIG_IEEE1394_DV1394=m CONFIG_IEEE1394_RAWIO=m CONFIG_IEEE1394_CMP=m CONFIG_IEEE1394_AMDTP=m # # I2O device support # # CONFIG_I2O is not set # # Networking support # CONFIG_NET=y # # Networking options # CONFIG_PACKET=m CONFIG_PACKET_MMAP=y CONFIG_NETLINK_DEV=m CONFIG_UNIX=y CONFIG_NET_KEY=m CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_ADVANCED_ROUTER=y CONFIG_IP_MULTIPLE_TABLES=y CONFIG_IP_ROUTE_FWMARK=y CONFIG_IP_ROUTE_MULTIPATH=y CONFIG_IP_ROUTE_TOS=y CONFIG_IP_ROUTE_VERBOSE=y CONFIG_IP_PNP=y CONFIG_IP_PNP_DHCP=y CONFIG_IP_PNP_BOOTP=y CONFIG_IP_PNP_RARP=y CONFIG_NET_IPIP=m CONFIG_NET_IPGRE=m CONFIG_NET_IPGRE_BROADCAST=y CONFIG_IP_MROUTE=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y # CONFIG_ARPD is not set CONFIG_SYN_COOKIES=y CONFIG_INET_AH=m CONFIG_INET_ESP=m CONFIG_INET_IPCOMP=m CONFIG_INET_TUNNEL=m # # IP: Virtual Server Configuration # CONFIG_IP_VS=m # CONFIG_IP_VS_DEBUG is not set CONFIG_IP_VS_TAB_BITS=12 # # IPVS transport protocol load balancing support # CONFIG_IP_VS_PROTO_TCP=y CONFIG_IP_VS_PROTO_UDP=y CONFIG_IP_VS_PROTO_ESP=y CONFIG_IP_VS_PROTO_AH=y # # IPVS scheduler # CONFIG_IP_VS_RR=m CONFIG_IP_VS_WRR=m CONFIG_IP_VS_LC=m CONFIG_IP_VS_WLC=m CONFIG_IP_VS_LBLC=m CONFIG_IP_VS_LBLCR=m CONFIG_IP_VS_DH=m CONFIG_IP_VS_SH=m CONFIG_IP_VS_SED=m CONFIG_IP_VS_NQ=m # # IPVS application helper # CONFIG_IP_VS_FTP=m CONFIG_IPV6=m CONFIG_IPV6_PRIVACY=y CONFIG_INET6_AH=m CONFIG_INET6_ESP=m CONFIG_INET6_IPCOMP=m CONFIG_INET6_TUNNEL=m CONFIG_IPV6_TUNNEL=m CONFIG_NETFILTER=y # CONFIG_NETFILTER_DEBUG is not set CONFIG_BRIDGE_NETFILTER=y # # IP: Netfilter Configuration # CONFIG_IP_NF_CONNTRACK=m # CONFIG_IP_NF_CT_ACCT is not set # CONFIG_IP_NF_CT_PROTO_SCTP is not set CONFIG_IP_NF_FTP=m CONFIG_IP_NF_IRC=m CONFIG_IP_NF_TFTP=m CONFIG_IP_NF_AMANDA=m CONFIG_IP_NF_QUEUE=m CONFIG_IP_NF_IPTABLES=m CONFIG_IP_NF_MATCH_LIMIT=m CONFIG_IP_NF_MATCH_IPRANGE=m CONFIG_IP_NF_MATCH_MAC=m CONFIG_IP_NF_MATCH_PKTTYPE=m CONFIG_IP_NF_MATCH_MARK=m CONFIG_IP_NF_MATCH_MULTIPORT=m CONFIG_IP_NF_MATCH_TOS=m CONFIG_IP_NF_MATCH_RECENT=m CONFIG_IP_NF_MATCH_ECN=m CONFIG_IP_NF_MATCH_DSCP=m CONFIG_IP_NF_MATCH_AH_ESP=m CONFIG_IP_NF_MATCH_LENGTH=m CONFIG_IP_NF_MATCH_TTL=m CONFIG_IP_NF_MATCH_TCPMSS=m CONFIG_IP_NF_MATCH_HELPER=m CONFIG_IP_NF_MATCH_STATE=m CONFIG_IP_NF_MATCH_CONNTRACK=m CONFIG_IP_NF_MATCH_OWNER=m CONFIG_IP_NF_MATCH_PHYSDEV=m # CONFIG_IP_NF_MATCH_ADDRTYPE is not set # CONFIG_IP_NF_MATCH_REALM is not set # CONFIG_IP_NF_MATCH_SCTP is not set CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m CONFIG_IP_NF_TARGET_LOG=m CONFIG_IP_NF_TARGET_ULOG=m CONFIG_IP_NF_TARGET_TCPMSS=m CONFIG_IP_NF_NAT=m CONFIG_IP_NF_NAT_NEEDED=y CONFIG_IP_NF_TARGET_MASQUERADE=m CONFIG_IP_NF_TARGET_REDIRECT=m CONFIG_IP_NF_TARGET_NETMAP=m CONFIG_IP_NF_TARGET_SAME=m # CONFIG_IP_NF_NAT_LOCAL is not set CONFIG_IP_NF_NAT_SNMP_BASIC=m CONFIG_IP_NF_NAT_IRC=m CONFIG_IP_NF_NAT_FTP=m CONFIG_IP_NF_NAT_TFTP=m CONFIG_IP_NF_NAT_AMANDA=m CONFIG_IP_NF_MANGLE=m CONFIG_IP_NF_TARGET_TOS=m CONFIG_IP_NF_TARGET_ECN=m CONFIG_IP_NF_TARGET_DSCP=m CONFIG_IP_NF_TARGET_MARK=m CONFIG_IP_NF_TARGET_CLASSIFY=m # CONFIG_IP_NF_RAW is not set CONFIG_IP_NF_ARPTABLES=m CONFIG_IP_NF_ARPFILTER=m CONFIG_IP_NF_ARP_MANGLE=m CONFIG_IP_NF_COMPAT_IPCHAINS=m CONFIG_IP_NF_COMPAT_IPFWADM=m # # IPv6: Netfilter Configuration # CONFIG_IP6_NF_QUEUE=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_MATCH_LIMIT=m CONFIG_IP6_NF_MATCH_MAC=m CONFIG_IP6_NF_MATCH_RT=m CONFIG_IP6_NF_MATCH_OPTS=m CONFIG_IP6_NF_MATCH_FRAG=m CONFIG_IP6_NF_MATCH_HL=m CONFIG_IP6_NF_MATCH_MULTIPORT=m CONFIG_IP6_NF_MATCH_OWNER=m CONFIG_IP6_NF_MATCH_MARK=m CONFIG_IP6_NF_MATCH_IPV6HEADER=m CONFIG_IP6_NF_MATCH_AHESP=m CONFIG_IP6_NF_MATCH_LENGTH=m CONFIG_IP6_NF_MATCH_EUI64=m CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_TARGET_LOG=m CONFIG_IP6_NF_MANGLE=m CONFIG_IP6_NF_TARGET_MARK=m # CONFIG_IP6_NF_RAW is not set # # DECnet: Netfilter Configuration # # CONFIG_DECNET_NF_GRABULATOR is not set # # Bridge: Netfilter Configuration # CONFIG_BRIDGE_NF_EBTABLES=m CONFIG_BRIDGE_EBT_BROUTE=m CONFIG_BRIDGE_EBT_T_FILTER=m CONFIG_BRIDGE_EBT_T_NAT=m CONFIG_BRIDGE_EBT_802_3=m CONFIG_BRIDGE_EBT_AMONG=m CONFIG_BRIDGE_EBT_ARP=m CONFIG_BRIDGE_EBT_IP=m CONFIG_BRIDGE_EBT_LIMIT=m CONFIG_BRIDGE_EBT_MARK=m CONFIG_BRIDGE_EBT_PKTTYPE=m CONFIG_BRIDGE_EBT_STP=m CONFIG_BRIDGE_EBT_VLAN=m CONFIG_BRIDGE_EBT_ARPREPLY=m CONFIG_BRIDGE_EBT_DNAT=m CONFIG_BRIDGE_EBT_MARK_T=m CONFIG_BRIDGE_EBT_REDIRECT=m CONFIG_BRIDGE_EBT_SNAT=m CONFIG_BRIDGE_EBT_LOG=m CONFIG_XFRM=y CONFIG_XFRM_USER=m # # SCTP Configuration (EXPERIMENTAL) # CONFIG_IP_SCTP=m # CONFIG_SCTP_DBG_MSG is not set # CONFIG_SCTP_DBG_OBJCNT is not set # CONFIG_SCTP_HMAC_NONE is not set # CONFIG_SCTP_HMAC_SHA1 is not set CONFIG_SCTP_HMAC_MD5=y # CONFIG_ATM is not set CONFIG_BRIDGE=m CONFIG_VLAN_8021Q=m CONFIG_DECNET=m CONFIG_DECNET_SIOCGIFCONF=y # CONFIG_DECNET_ROUTER is not set CONFIG_LLC=m CONFIG_LLC2=m CONFIG_IPX=m CONFIG_IPX_INTERN=y CONFIG_ATALK=m CONFIG_DEV_APPLETALK=y CONFIG_IPDDP=m CONFIG_IPDDP_ENCAP=y CONFIG_IPDDP_DECAP=y CONFIG_X25=m CONFIG_LAPB=m # CONFIG_NET_DIVERT is not set CONFIG_ECONET=m # CONFIG_ECONET_AUNUDP is not set # CONFIG_ECONET_NATIVE is not set CONFIG_WAN_ROUTER=m # CONFIG_NET_HW_FLOWCONTROL is not set # # QoS and/or fair queueing # CONFIG_NET_SCHED=y CONFIG_NET_SCH_CLK_JIFFIES=y # CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set # CONFIG_NET_SCH_CLK_CPU is not set CONFIG_NET_SCH_CBQ=m CONFIG_NET_SCH_HTB=m CONFIG_NET_SCH_HFSC=m CONFIG_NET_SCH_PRIO=m CONFIG_NET_SCH_RED=m CONFIG_NET_SCH_SFQ=m CONFIG_NET_SCH_TEQL=m CONFIG_NET_SCH_TBF=m CONFIG_NET_SCH_GRED=m CONFIG_NET_SCH_DSMARK=m # CONFIG_NET_SCH_NETEM is not set CONFIG_NET_SCH_INGRESS=m CONFIG_NET_QOS=y CONFIG_NET_ESTIMATOR=y CONFIG_NET_CLS=y CONFIG_NET_CLS_TCINDEX=m CONFIG_NET_CLS_ROUTE4=m CONFIG_NET_CLS_ROUTE=y CONFIG_NET_CLS_FW=m CONFIG_NET_CLS_U32=m # CONFIG_CLS_U32_PERF is not set # CONFIG_NET_CLS_IND is not set CONFIG_NET_CLS_RSVP=m CONFIG_NET_CLS_RSVP6=m # CONFIG_NET_CLS_ACT is not set CONFIG_NET_CLS_POLICE=y # # Network testing # CONFIG_NET_PKTGEN=m CONFIG_NETPOLL=y CONFIG_NETPOLL_RX=y CONFIG_NETPOLL_TRAP=y CONFIG_NET_POLL_CONTROLLER=y # CONFIG_HAMRADIO is not set CONFIG_IRDA=m # # IrDA protocols # CONFIG_IRLAN=m CONFIG_IRNET=m CONFIG_IRCOMM=m CONFIG_IRDA_ULTRA=y # # IrDA options # CONFIG_IRDA_CACHE_LAST_LSAP=y CONFIG_IRDA_FAST_RR=y CONFIG_IRDA_DEBUG=y # # Infrared-port device drivers # # # SIR device drivers # CONFIG_IRTTY_SIR=m # # Dongle support # CONFIG_DONGLE=y CONFIG_ESI_DONGLE=m CONFIG_ACTISYS_DONGLE=m CONFIG_TEKRAM_DONGLE=m CONFIG_LITELINK_DONGLE=m CONFIG_MA600_DONGLE=m CONFIG_GIRBIL_DONGLE=m CONFIG_MCP2120_DONGLE=m CONFIG_OLD_BELKIN_DONGLE=m CONFIG_ACT200L_DONGLE=m # # Old SIR device drivers # # CONFIG_IRPORT_SIR is not set # # Old Serial dongle support # # # FIR device drivers # CONFIG_USB_IRDA=m CONFIG_SIGMATEL_FIR=m CONFIG_VLSI_FIR=m CONFIG_BT=m CONFIG_BT_L2CAP=m CONFIG_BT_SCO=m CONFIG_BT_RFCOMM=m CONFIG_BT_RFCOMM_TTY=y CONFIG_BT_BNEP=m CONFIG_BT_BNEP_MC_FILTER=y CONFIG_BT_BNEP_PROTO_FILTER=y CONFIG_BT_HIDP=m # # Bluetooth device drivers # CONFIG_BT_HCIUSB=m CONFIG_BT_HCIUSB_SCO=y CONFIG_BT_HCIUART=m CONFIG_BT_HCIUART_H4=y CONFIG_BT_HCIUART_BCSP=y CONFIG_BT_HCIUART_BCSP_TXCRC=y CONFIG_BT_HCIBCM203X=m CONFIG_BT_HCIBFUSB=m CONFIG_BT_HCIDTL1=m CONFIG_BT_HCIBT3C=m CONFIG_BT_HCIBLUECARD=m CONFIG_BT_HCIBTUART=m CONFIG_BT_HCIVHCI=m CONFIG_NETDEVICES=y CONFIG_DUMMY=m CONFIG_BONDING=m CONFIG_EQUALIZER=m CONFIG_TUN=m CONFIG_ETHERTAP=m # # ARCnet devices # # CONFIG_ARCNET is not set # # Ethernet (10 or 100Mbit) # CONFIG_NET_ETHERNET=y CONFIG_MII=m # CONFIG_HAPPYMEAL is not set # CONFIG_SUNGEM is not set # CONFIG_NET_VENDOR_3COM is not set # # Tulip family network device support # # CONFIG_NET_TULIP is not set # CONFIG_HP100 is not set CONFIG_NET_PCI=y # CONFIG_PCNET32 is not set # CONFIG_AMD8111_ETH is not set # CONFIG_ADAPTEC_STARFIRE is not set # CONFIG_B44 is not set # CONFIG_FORCEDETH is not set # CONFIG_DGRS is not set # CONFIG_EEPRO100 is not set # CONFIG_E100 is not set # CONFIG_FEALNX is not set # CONFIG_NATSEMI is not set # CONFIG_NE2K_PCI is not set # CONFIG_8139CP is not set # CONFIG_8139TOO is not set # CONFIG_SIS900 is not set # CONFIG_EPIC100 is not set # CONFIG_SUNDANCE is not set # CONFIG_VIA_RHINE is not set # CONFIG_VIA_VELOCITY is not set # # Ethernet (1000 Mbit) # # CONFIG_ACENIC is not set # CONFIG_DL2K is not set # CONFIG_E1000 is not set # CONFIG_NS83820 is not set # CONFIG_HAMACHI is not set # CONFIG_YELLOWFIN is not set # CONFIG_R8169 is not set CONFIG_SK98LIN=m # CONFIG_TIGON3 is not set # # Ethernet (10000 Mbit) # # CONFIG_IXGB is not set # CONFIG_S2IO is not set # # Token Ring devices # # CONFIG_TR is not set # # Wireless LAN (non-hamradio) # CONFIG_NET_RADIO=y # # Obsolete Wireless cards support (pre-802.11) # CONFIG_STRIP=m CONFIG_PCMCIA_WAVELAN=m CONFIG_PCMCIA_NETWAVE=m # # Wireless 802.11 Frequency Hopping cards support # CONFIG_PCMCIA_RAYCS=m # # Wireless 802.11b ISA/PCI cards support # CONFIG_HERMES=m CONFIG_PLX_HERMES=m CONFIG_TMD_HERMES=m CONFIG_PCI_HERMES=m CONFIG_ATMEL=m CONFIG_PCI_ATMEL=m # # Wireless 802.11b Pcmcia/Cardbus cards support # CONFIG_PCMCIA_HERMES=m CONFIG_AIRO_CS=m CONFIG_PCMCIA_ATMEL=m CONFIG_PCMCIA_WL3501=m # # Prism GT/Duette 802.11(a/b/g) PCI/Cardbus support # CONFIG_PRISM54=m CONFIG_NET_WIRELESS=y # # PCMCIA network device support # CONFIG_NET_PCMCIA=y CONFIG_PCMCIA_3C589=m CONFIG_PCMCIA_3C574=m CONFIG_PCMCIA_FMVJ18X=m CONFIG_PCMCIA_PCNET=m CONFIG_PCMCIA_NMCLAN=m CONFIG_PCMCIA_SMC91C92=m CONFIG_PCMCIA_XIRC2PS=m CONFIG_PCMCIA_AXNET=m # # Wan interfaces # # CONFIG_WAN is not set # CONFIG_FDDI is not set # CONFIG_HIPPI is not set # CONFIG_PLIP is not set CONFIG_PPP=m CONFIG_PPP_MULTILINK=y CONFIG_PPP_FILTER=y CONFIG_PPP_ASYNC=m CONFIG_PPP_SYNC_TTY=m CONFIG_PPP_DEFLATE=m CONFIG_PPP_BSDCOMP=m CONFIG_PPPOE=m CONFIG_SLIP=m CONFIG_SLIP_COMPRESSED=y CONFIG_SLIP_SMART=y CONFIG_SLIP_MODE_SLIP6=y # CONFIG_NET_FC is not set CONFIG_SHAPER=m CONFIG_NETCONSOLE=m # # ISDN subsystem # # CONFIG_ISDN is not set # # Telephony Support # # CONFIG_PHONE is not set # # Input device support # CONFIG_INPUT=y # # Userland interfaces # CONFIG_INPUT_MOUSEDEV=y CONFIG_INPUT_MOUSEDEV_PSAUX=y CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024 CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768 CONFIG_INPUT_JOYDEV=m CONFIG_INPUT_TSDEV=m CONFIG_INPUT_TSDEV_SCREEN_X=240 CONFIG_INPUT_TSDEV_SCREEN_Y=320 CONFIG_INPUT_EVDEV=m # CONFIG_INPUT_EVBUG is not set # # Input I/O drivers # CONFIG_GAMEPORT=m CONFIG_SOUND_GAMEPORT=m CONFIG_GAMEPORT_NS558=m CONFIG_GAMEPORT_L4=m CONFIG_GAMEPORT_EMU10K1=m CONFIG_GAMEPORT_VORTEX=m CONFIG_GAMEPORT_FM801=m CONFIG_GAMEPORT_CS461x=m CONFIG_SERIO=y CONFIG_SERIO_I8042=y CONFIG_SERIO_SERPORT=m CONFIG_SERIO_CT82C710=m CONFIG_SERIO_PARKBD=m CONFIG_SERIO_PCIPS2=m # # Input Device Drivers # CONFIG_INPUT_KEYBOARD=y CONFIG_KEYBOARD_ATKBD=y CONFIG_KEYBOARD_SUNKBD=m # CONFIG_KEYBOARD_LKKBD is not set CONFIG_KEYBOARD_XTKBD=m CONFIG_KEYBOARD_NEWTON=m CONFIG_INPUT_MOUSE=y CONFIG_MOUSE_PS2=y CONFIG_MOUSE_SERIAL=m # CONFIG_MOUSE_VSXXXAA is not set # CONFIG_INPUT_JOYSTICK is not set # CONFIG_INPUT_TOUCHSCREEN is not set CONFIG_INPUT_MISC=y CONFIG_INPUT_PCSPKR=m CONFIG_INPUT_UINPUT=m # # Character devices # CONFIG_VT=y CONFIG_VT_CONSOLE=y CONFIG_HW_CONSOLE=y CONFIG_SERIAL_NONSTANDARD=y # CONFIG_COMPUTONE is not set # CONFIG_ROCKETPORT is not set # CONFIG_CYCLADES is not set # CONFIG_DIGIEPCA is not set # CONFIG_DIGI is not set # CONFIG_MOXA_INTELLIO is not set # CONFIG_MOXA_SMARTIO is not set # CONFIG_ISI is not set # CONFIG_SYNCLINK is not set # CONFIG_SYNCLINKMP is not set CONFIG_N_HDLC=m # CONFIG_RISCOM8 is not set # CONFIG_SPECIALIX is not set # CONFIG_SX is not set # CONFIG_RIO is not set # CONFIG_STALDRV is not set # # Serial drivers # CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_CS=m CONFIG_SERIAL_8250_ACPI=y CONFIG_SERIAL_8250_NR_UARTS=4 CONFIG_SERIAL_8250_EXTENDED=y # CONFIG_SERIAL_8250_MANY_PORTS is not set CONFIG_SERIAL_8250_SHARE_IRQ=y # CONFIG_SERIAL_8250_DETECT_IRQ is not set # CONFIG_SERIAL_8250_MULTIPORT is not set # CONFIG_SERIAL_8250_RSA is not set # # Non-8250 serial port support # CONFIG_SERIAL_CORE=y CONFIG_SERIAL_CORE_CONSOLE=y CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 CONFIG_PRINTER=m # CONFIG_LP_CONSOLE is not set CONFIG_PPDEV=m CONFIG_TIPAR=m # # IPMI # CONFIG_IPMI_HANDLER=m CONFIG_IPMI_PANIC_EVENT=y CONFIG_IPMI_PANIC_STRING=y CONFIG_IPMI_DEVICE_INTERFACE=m CONFIG_IPMI_SI=m CONFIG_IPMI_WATCHDOG=m # CONFIG_IPMI_POWEROFF is not set # # Watchdog Cards # # CONFIG_WATCHDOG is not set CONFIG_HW_RANDOM=m CONFIG_NVRAM=m CONFIG_RTC=y # CONFIG_DTLK is not set # CONFIG_R3964 is not set # CONFIG_APPLICOM is not set # # Ftape, the floppy tape device driver # # CONFIG_FTAPE is not set CONFIG_AGP=y CONFIG_AGP_AMD64=y # CONFIG_AGP_INTEL_MCH is not set # CONFIG_DRM is not set # # PCMCIA character devices # CONFIG_SYNCLINK_CS=m # CONFIG_MWAVE is not set CONFIG_RAW_DRIVER=m CONFIG_HPET=y # CONFIG_HPET_RTC_IRQ is not set CONFIG_HPET_MMAP=y CONFIG_MAX_RAW_DEVS=4096 CONFIG_HANGCHECK_TIMER=m # # I2C support # CONFIG_I2C=m CONFIG_I2C_CHARDEV=m # # I2C Algorithms # CONFIG_I2C_ALGOBIT=m CONFIG_I2C_ALGOPCF=m # CONFIG_I2C_ALGOPCA is not set # # I2C Hardware Bus support # CONFIG_I2C_ALI1535=m # CONFIG_I2C_ALI1563 is not set CONFIG_I2C_ALI15X3=m CONFIG_I2C_AMD756=m CONFIG_I2C_AMD8111=m CONFIG_I2C_I801=m CONFIG_I2C_I810=m CONFIG_I2C_ISA=m CONFIG_I2C_NFORCE2=m CONFIG_I2C_PARPORT=m CONFIG_I2C_PARPORT_LIGHT=m CONFIG_I2C_PROSAVAGE=m CONFIG_I2C_SAVAGE4=m CONFIG_SCx200_ACB=m CONFIG_I2C_SIS5595=m CONFIG_I2C_SIS630=m CONFIG_I2C_SIS96X=m CONFIG_I2C_VIA=m CONFIG_I2C_VIAPRO=m CONFIG_I2C_VOODOO3=m # CONFIG_I2C_PCA_ISA is not set # # Hardware Sensors Chip support # CONFIG_I2C_SENSOR=m CONFIG_SENSORS_ADM1021=m # CONFIG_SENSORS_ADM1025 is not set # CONFIG_SENSORS_ADM1031 is not set CONFIG_SENSORS_ASB100=m CONFIG_SENSORS_DS1621=m CONFIG_SENSORS_FSCHER=m CONFIG_SENSORS_GL518SM=m CONFIG_SENSORS_IT87=m CONFIG_SENSORS_LM75=m # CONFIG_SENSORS_LM77 is not set CONFIG_SENSORS_LM78=m CONFIG_SENSORS_LM80=m CONFIG_SENSORS_LM83=m CONFIG_SENSORS_LM85=m CONFIG_SENSORS_LM90=m # CONFIG_SENSORS_MAX1619 is not set # CONFIG_SENSORS_SMSC47M1 is not set CONFIG_SENSORS_VIA686A=m CONFIG_SENSORS_W83781D=m CONFIG_SENSORS_W83L785TS=m CONFIG_SENSORS_W83627HF=m # # Other I2C Chip support # CONFIG_SENSORS_EEPROM=m # CONFIG_SENSORS_PCF8574 is not set # CONFIG_SENSORS_PCF8591 is not set # CONFIG_SENSORS_RTC8564 is not set CONFIG_I2C_DEBUG_CORE=y CONFIG_I2C_DEBUG_ALGO=y CONFIG_I2C_DEBUG_BUS=y CONFIG_I2C_DEBUG_CHIP=y # # Dallas's 1-wire bus # # CONFIG_W1 is not set # # Misc devices # # CONFIG_IBM_ASM is not set # # Multimedia devices # CONFIG_VIDEO_DEV=m # # Video For Linux # # # Video Adapters # CONFIG_VIDEO_BT848=m CONFIG_VIDEO_BWQCAM=m CONFIG_VIDEO_CQCAM=m CONFIG_VIDEO_W9966=m CONFIG_VIDEO_CPIA=m CONFIG_VIDEO_CPIA_PP=m CONFIG_VIDEO_CPIA_USB=m CONFIG_VIDEO_SAA5246A=m CONFIG_VIDEO_SAA5249=m CONFIG_TUNER_3036=m CONFIG_VIDEO_STRADIS=m # CONFIG_VIDEO_ZORAN is not set # CONFIG_VIDEO_SAA7134 is not set CONFIG_VIDEO_MXB=m CONFIG_VIDEO_DPC=m CONFIG_VIDEO_HEXIUM_ORION=m CONFIG_VIDEO_HEXIUM_GEMINI=m CONFIG_VIDEO_CX88=m # CONFIG_VIDEO_OVCAMCHIP is not set # # Radio Adapters # CONFIG_RADIO_GEMTEK_PCI=m CONFIG_RADIO_MAXIRADIO=m CONFIG_RADIO_MAESTRO=m # # Digital Video Broadcasting Devices # CONFIG_DVB=y CONFIG_DVB_CORE=m # # Supported Frontend Modules # CONFIG_DVB_TWINHAN_DST=m CONFIG_DVB_STV0299=m CONFIG_DVB_SP887X=m CONFIG_DVB_SP887X_FIRMWARE_FILE="/etc/dvb/sc_main.mc" CONFIG_DVB_ALPS_TDLB7=m CONFIG_DVB_ALPS_TDMB7=m CONFIG_DVB_ATMEL_AT76C651=m CONFIG_DVB_CX24110=m CONFIG_DVB_GRUNDIG_29504_491=m CONFIG_DVB_GRUNDIG_29504_401=m CONFIG_DVB_MT312=m CONFIG_DVB_VES1820=m CONFIG_DVB_VES1X93=m CONFIG_DVB_TDA1004X=m CONFIG_DVB_TDA1004X_FIRMWARE_FILE="/usr/lib/hotplug/firmware/tda1004x.bin" CONFIG_DVB_NXT6000=m # # Supported SAA7146 based PCI Adapters # CONFIG_DVB_AV7110=m # CONFIG_DVB_AV7110_OSD is not set CONFIG_DVB_BUDGET=m CONFIG_DVB_BUDGET_CI=m CONFIG_DVB_BUDGET_AV=m CONFIG_DVB_BUDGET_PATCH=m # # Supported USB Adapters # CONFIG_DVB_TTUSB_BUDGET=m CONFIG_DVB_TTUSB_DEC=m # # Supported FlexCopII (B2C2) Adapters # CONFIG_DVB_B2C2_SKYSTAR=m # # Supported BT878 Adapters # CONFIG_DVB_BT8XX=m CONFIG_VIDEO_SAA7146=m CONFIG_VIDEO_SAA7146_VV=m CONFIG_VIDEO_VIDEOBUF=m CONFIG_VIDEO_TUNER=m CONFIG_VIDEO_BUF=m CONFIG_VIDEO_BTCX=m CONFIG_VIDEO_IR=m # # Graphics support # CONFIG_FB=y CONFIG_FB_MODE_HELPERS=y # CONFIG_FB_CIRRUS is not set # CONFIG_FB_PM2 is not set # CONFIG_FB_CYBER2000 is not set # CONFIG_FB_ASILIANT is not set # CONFIG_FB_IMSTT is not set # CONFIG_FB_VGA16 is not set CONFIG_FB_VESA=y CONFIG_VIDEO_SELECT=y # CONFIG_FB_HGA is not set # CONFIG_FB_RIVA is not set # CONFIG_FB_MATROX is not set # CONFIG_FB_RADEON_OLD is not set # CONFIG_FB_RADEON is not set # CONFIG_FB_ATY128 is not set # CONFIG_FB_ATY is not set # CONFIG_FB_SIS is not set # CONFIG_FB_NEOMAGIC is not set # CONFIG_FB_KYRO is not set # CONFIG_FB_3DFX is not set # CONFIG_FB_VOODOO1 is not set # CONFIG_FB_TRIDENT is not set CONFIG_FB_VIRTUAL=m # # Console display driver support # CONFIG_VGA_CONSOLE=y CONFIG_DUMMY_CONSOLE=y CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_FONTS=y CONFIG_FONT_8x8=y CONFIG_FONT_8x16=y # CONFIG_FONT_6x11 is not set # CONFIG_FONT_PEARL_8x8 is not set # CONFIG_FONT_ACORN_8x8 is not set # CONFIG_FONT_MINI_4x6 is not set # CONFIG_FONT_SUN8x16 is not set # CONFIG_FONT_SUN12x22 is not set # # Logo configuration # CONFIG_LOGO=y # CONFIG_LOGO_LINUX_MONO is not set # CONFIG_LOGO_LINUX_VGA16 is not set CONFIG_LOGO_LINUX_CLUT224=y # # Sound # CONFIG_SOUND=m # # Advanced Linux Sound Architecture # CONFIG_SND=m CONFIG_SND_TIMER=m CONFIG_SND_PCM=m CONFIG_SND_HWDEP=m CONFIG_SND_RAWMIDI=m CONFIG_SND_SEQUENCER=m CONFIG_SND_SEQ_DUMMY=m CONFIG_SND_OSSEMUL=y CONFIG_SND_MIXER_OSS=m CONFIG_SND_PCM_OSS=m CONFIG_SND_SEQUENCER_OSS=y CONFIG_SND_BIT32_EMUL=m CONFIG_SND_RTCTIMER=m CONFIG_SND_VERBOSE_PRINTK=y CONFIG_SND_DEBUG=y CONFIG_SND_DEBUG_MEMORY=y CONFIG_SND_DEBUG_DETECT=y # # Generic devices # CONFIG_SND_MPU401_UART=m CONFIG_SND_DUMMY=m CONFIG_SND_VIRMIDI=m CONFIG_SND_MTPAV=m CONFIG_SND_SERIAL_U16550=m CONFIG_SND_MPU401=m # # PCI devices # CONFIG_SND_AC97_CODEC=m # CONFIG_SND_ALI5451 is not set # CONFIG_SND_ATIIXP is not set # CONFIG_SND_ATIIXP_MODEM is not set # CONFIG_SND_AU8810 is not set # CONFIG_SND_AU8820 is not set # CONFIG_SND_AU8830 is not set # CONFIG_SND_AZT3328 is not set # CONFIG_SND_BT87X is not set # CONFIG_SND_CS46XX is not set # CONFIG_SND_CS4281 is not set # CONFIG_SND_EMU10K1 is not set # CONFIG_SND_KORG1212 is not set # CONFIG_SND_MIXART is not set # CONFIG_SND_NM256 is not set # CONFIG_SND_RME32 is not set # CONFIG_SND_RME96 is not set # CONFIG_SND_RME9652 is not set # CONFIG_SND_HDSP is not set # CONFIG_SND_TRIDENT is not set # CONFIG_SND_YMFPCI is not set # CONFIG_SND_ALS4000 is not set # CONFIG_SND_CMIPCI is not set # CONFIG_SND_ENS1370 is not set # CONFIG_SND_ENS1371 is not set # CONFIG_SND_ES1938 is not set # CONFIG_SND_ES1968 is not set # CONFIG_SND_MAESTRO3 is not set # CONFIG_SND_FM801 is not set # CONFIG_SND_ICE1712 is not set # CONFIG_SND_ICE1724 is not set CONFIG_SND_INTEL8X0=m CONFIG_SND_INTEL8X0M=m # CONFIG_SND_SONICVIBES is not set # CONFIG_SND_VIA82XX is not set # CONFIG_SND_VX222 is not set # # ALSA USB devices # CONFIG_SND_USB_AUDIO=m # CONFIG_SND_USB_USX2Y is not set # # PCMCIA devices # # # Open Sound System # # CONFIG_SOUND_PRIME is not set # # USB support # CONFIG_USB=m # CONFIG_USB_DEBUG is not set # # Miscellaneous USB options # CONFIG_USB_DEVICEFS=y CONFIG_USB_BANDWIDTH=y CONFIG_USB_DYNAMIC_MINORS=y # CONFIG_USB_SUSPEND is not set # CONFIG_USB_OTG is not set # # USB Host Controller Drivers # CONFIG_USB_EHCI_HCD=m CONFIG_USB_EHCI_SPLIT_ISO=y # CONFIG_USB_EHCI_ROOT_HUB_TT is not set CONFIG_USB_OHCI_HCD=m CONFIG_USB_UHCI_HCD=m # # USB Device Class drivers # CONFIG_USB_AUDIO=m # # USB Bluetooth TTY can only be used with disabled Bluetooth subsystem # CONFIG_USB_MIDI=m CONFIG_USB_ACM=m CONFIG_USB_PRINTER=m CONFIG_USB_STORAGE=m # CONFIG_USB_STORAGE_DEBUG is not set CONFIG_USB_STORAGE_RW_DETECT=y CONFIG_USB_STORAGE_DATAFAB=y CONFIG_USB_STORAGE_FREECOM=y CONFIG_USB_STORAGE_ISD200=y CONFIG_USB_STORAGE_DPCM=y CONFIG_USB_STORAGE_HP8200e=y CONFIG_USB_STORAGE_SDDR09=y CONFIG_USB_STORAGE_SDDR55=y CONFIG_USB_STORAGE_JUMPSHOT=y # # USB Human Interface Devices (HID) # CONFIG_USB_HID=m CONFIG_USB_HIDINPUT=y CONFIG_HID_FF=y CONFIG_HID_PID=y CONFIG_LOGITECH_FF=y CONFIG_THRUSTMASTER_FF=y CONFIG_USB_HIDDEV=y # # USB HID Boot Protocol drivers # # CONFIG_USB_KBD is not set # CONFIG_USB_MOUSE is not set CONFIG_USB_AIPTEK=m CONFIG_USB_WACOM=m CONFIG_USB_KBTAB=m CONFIG_USB_POWERMATE=m CONFIG_USB_MTOUCH=m # CONFIG_USB_EGALAX is not set CONFIG_USB_XPAD=m CONFIG_USB_ATI_REMOTE=m # # USB Imaging devices # CONFIG_USB_MDC800=m CONFIG_USB_MICROTEK=m CONFIG_USB_HPUSBSCSI=m # # USB Multimedia devices # CONFIG_USB_DABUSB=m CONFIG_USB_VICAM=m CONFIG_USB_DSBR=m CONFIG_USB_IBMCAM=m CONFIG_USB_KONICAWC=m CONFIG_USB_OV511=m CONFIG_USB_SE401=m CONFIG_USB_SN9C102=m CONFIG_USB_STV680=m # # USB Network adaptors # CONFIG_USB_CATC=m CONFIG_USB_KAWETH=m CONFIG_USB_PEGASUS=m CONFIG_USB_RTL8150=m CONFIG_USB_USBNET=m # # USB Host-to-Host Cables # CONFIG_USB_ALI_M5632=y CONFIG_USB_AN2720=y CONFIG_USB_BELKIN=y CONFIG_USB_GENESYS=y CONFIG_USB_NET1080=y CONFIG_USB_PL2301=y # # Intelligent USB Devices/Gadgets # CONFIG_USB_ARMLINUX=y CONFIG_USB_EPSON2888=y CONFIG_USB_ZAURUS=y CONFIG_USB_CDCETHER=y # # USB Network Adapters # CONFIG_USB_AX8817X=y # # USB port drivers # CONFIG_USB_USS720=m # # USB Serial Converter support # CONFIG_USB_SERIAL=m CONFIG_USB_SERIAL_GENERIC=y CONFIG_USB_SERIAL_BELKIN=m # CONFIG_USB_SERIAL_WHITEHEAT is not set CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m CONFIG_USB_SERIAL_EMPEG=m CONFIG_USB_SERIAL_FTDI_SIO=m CONFIG_USB_SERIAL_VISOR=m CONFIG_USB_SERIAL_IPAQ=m CONFIG_USB_SERIAL_IR=m CONFIG_USB_SERIAL_EDGEPORT=m CONFIG_USB_SERIAL_EDGEPORT_TI=m CONFIG_USB_SERIAL_KEYSPAN_PDA=m CONFIG_USB_SERIAL_KEYSPAN=m CONFIG_USB_SERIAL_KEYSPAN_MPR=y CONFIG_USB_SERIAL_KEYSPAN_USA28=y CONFIG_USB_SERIAL_KEYSPAN_USA28X=y CONFIG_USB_SERIAL_KEYSPAN_USA28XA=y CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y CONFIG_USB_SERIAL_KEYSPAN_USA19=y CONFIG_USB_SERIAL_KEYSPAN_USA18X=y CONFIG_USB_SERIAL_KEYSPAN_USA19W=y CONFIG_USB_SERIAL_KEYSPAN_USA19QW=y CONFIG_USB_SERIAL_KEYSPAN_USA19QI=y CONFIG_USB_SERIAL_KEYSPAN_USA49W=y CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y CONFIG_USB_SERIAL_KLSI=m CONFIG_USB_SERIAL_KOBIL_SCT=m CONFIG_USB_SERIAL_MCT_U232=m CONFIG_USB_SERIAL_PL2303=m CONFIG_USB_SERIAL_SAFE=m CONFIG_USB_SERIAL_SAFE_PADDED=y CONFIG_USB_SERIAL_CYBERJACK=m CONFIG_USB_SERIAL_XIRCOM=m CONFIG_USB_SERIAL_OMNINET=m CONFIG_USB_EZUSB=y # # USB Miscellaneous drivers # CONFIG_USB_EMI62=m CONFIG_USB_EMI26=m CONFIG_USB_TIGL=m CONFIG_USB_AUERSWALD=m CONFIG_USB_RIO500=m CONFIG_USB_LEGOTOWER=m CONFIG_USB_LCD=m CONFIG_USB_LED=m # CONFIG_USB_CYTHERM is not set # CONFIG_USB_PHIDGETSERVO is not set # CONFIG_USB_TEST is not set # # USB Gadget Support # # CONFIG_USB_GADGET is not set # # Firmware Drivers # # CONFIG_EDD is not set # # File systems # CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y CONFIG_EXT2_FS_SECURITY=y CONFIG_EXT3_FS=y CONFIG_EXT3_FS_XATTR=y CONFIG_EXT3_FS_POSIX_ACL=y CONFIG_EXT3_FS_SECURITY=y CONFIG_JBD=y CONFIG_JBD_DEBUG=y CONFIG_FS_MBCACHE=y CONFIG_REISERFS_FS=y # CONFIG_REISERFS_CHECK is not set CONFIG_REISERFS_PROC_INFO=y CONFIG_REISERFS_FS_XATTR=y CONFIG_REISERFS_FS_POSIX_ACL=y CONFIG_REISERFS_FS_SECURITY=y # CONFIG_JFS_FS is not set CONFIG_FS_POSIX_ACL=y # CONFIG_XFS_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_ROMFS_FS is not set CONFIG_QUOTA=y CONFIG_QFMT_V1=m CONFIG_QFMT_V2=m CONFIG_QUOTACTL=y CONFIG_AUTOFS_FS=m CONFIG_AUTOFS4_FS=m # # CD-ROM/DVD Filesystems # CONFIG_ISO9660_FS=m CONFIG_JOLIET=y CONFIG_ZISOFS=y CONFIG_ZISOFS_FS=m CONFIG_UDF_FS=m CONFIG_UDF_NLS=y # # DOS/FAT/NT Filesystems # CONFIG_FAT_FS=m CONFIG_MSDOS_FS=m CONFIG_VFAT_FS=m CONFIG_FAT_DEFAULT_CODEPAGE=437 CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1" CONFIG_NTFS_FS=m CONFIG_NTFS_DEBUG=y CONFIG_NTFS_RW=y # # Pseudo filesystems # CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_SYSFS=y # CONFIG_DEVFS_FS is not set CONFIG_DEVPTS_FS_XATTR=y CONFIG_DEVPTS_FS_SECURITY=y CONFIG_TMPFS=y CONFIG_HUGETLBFS=y CONFIG_HUGETLB_PAGE=y CONFIG_RAMFS=y # # Miscellaneous filesystems # # CONFIG_ADFS_FS is not set # CONFIG_AFFS_FS is not set # CONFIG_HFS_FS is not set # CONFIG_HFSPLUS_FS is not set # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set # CONFIG_EFS_FS is not set # CONFIG_JFFS_FS is not set # CONFIG_JFFS2_FS is not set # CONFIG_CRAMFS is not set # CONFIG_VXFS_FS is not set # CONFIG_HPFS_FS is not set # CONFIG_QNX4FS_FS is not set # CONFIG_SYSV_FS is not set # CONFIG_UFS_FS is not set # # Network File Systems # CONFIG_NFS_FS=m CONFIG_NFS_V3=y CONFIG_NFS_V4=y # CONFIG_NFS_DIRECTIO is not set CONFIG_NFSD=m CONFIG_NFSD_V3=y CONFIG_NFSD_V4=y CONFIG_NFSD_TCP=y CONFIG_LOCKD=m CONFIG_LOCKD_V4=y CONFIG_EXPORTFS=m CONFIG_SUNRPC=m CONFIG_SUNRPC_GSS=m CONFIG_RPCSEC_GSS_KRB5=m # CONFIG_RPCSEC_GSS_SPKM3 is not set CONFIG_SMB_FS=m CONFIG_SMB_NLS_DEFAULT=y CONFIG_SMB_NLS_REMOTE="cp852" CONFIG_CIFS=m CONFIG_CIFS_STATS=y CONFIG_CIFS_XATTR=y CONFIG_CIFS_POSIX=y CONFIG_NCP_FS=m CONFIG_NCPFS_PACKET_SIGNING=y CONFIG_NCPFS_IOCTL_LOCKING=y CONFIG_NCPFS_STRONG=y CONFIG_NCPFS_NFS_NS=y CONFIG_NCPFS_OS2_NS=y CONFIG_NCPFS_SMALLDOS=y CONFIG_NCPFS_NLS=y CONFIG_NCPFS_EXTRAS=y # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set # # Partition Types # # CONFIG_PARTITION_ADVANCED is not set CONFIG_MSDOS_PARTITION=y # # Native Language Support # CONFIG_NLS=y CONFIG_NLS_DEFAULT="iso8859-2" CONFIG_NLS_CODEPAGE_437=m CONFIG_NLS_CODEPAGE_737=m CONFIG_NLS_CODEPAGE_775=m CONFIG_NLS_CODEPAGE_850=m CONFIG_NLS_CODEPAGE_852=m CONFIG_NLS_CODEPAGE_855=m CONFIG_NLS_CODEPAGE_857=m CONFIG_NLS_CODEPAGE_860=m CONFIG_NLS_CODEPAGE_861=m CONFIG_NLS_CODEPAGE_862=m CONFIG_NLS_CODEPAGE_863=m CONFIG_NLS_CODEPAGE_864=m CONFIG_NLS_CODEPAGE_865=m CONFIG_NLS_CODEPAGE_866=m CONFIG_NLS_CODEPAGE_869=m CONFIG_NLS_CODEPAGE_936=m CONFIG_NLS_CODEPAGE_950=m CONFIG_NLS_CODEPAGE_932=m CONFIG_NLS_CODEPAGE_949=m CONFIG_NLS_CODEPAGE_874=m CONFIG_NLS_ISO8859_8=m CONFIG_NLS_CODEPAGE_1250=m CONFIG_NLS_CODEPAGE_1251=m # CONFIG_NLS_ASCII is not set CONFIG_NLS_ISO8859_1=m CONFIG_NLS_ISO8859_2=m CONFIG_NLS_ISO8859_3=m CONFIG_NLS_ISO8859_4=m CONFIG_NLS_ISO8859_5=m CONFIG_NLS_ISO8859_6=m CONFIG_NLS_ISO8859_7=m CONFIG_NLS_ISO8859_9=m CONFIG_NLS_ISO8859_13=m CONFIG_NLS_ISO8859_14=m CONFIG_NLS_ISO8859_15=m CONFIG_NLS_KOI8_R=m CONFIG_NLS_KOI8_U=m CONFIG_NLS_UTF8=m # # Profiling support # CONFIG_PROFILING=y CONFIG_OPROFILE=m # # Kernel hacking # CONFIG_DEBUG_KERNEL=y CONFIG_MAGIC_SYSRQ=y # CONFIG_DEBUG_SLAB is not set CONFIG_DEBUG_SPINLOCK=y # CONFIG_DEBUG_SPINLOCK_SLEEP is not set # CONFIG_DEBUG_INFO is not set # CONFIG_FRAME_POINTER is not set # CONFIG_CHECKING is not set # CONFIG_INIT_DEBUG is not set CONFIG_SCHEDSTATS=y # CONFIG_IOMMU_DEBUG is not set # # Security options # CONFIG_SECURITY=y CONFIG_SECURITY_NETWORK=y CONFIG_SECURITY_CAPABILITIES=y CONFIG_SECURITY_ROOTPLUG=m CONFIG_SECURITY_SELINUX=y CONFIG_SECURITY_SELINUX_BOOTPARAM=y CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=1 CONFIG_SECURITY_SELINUX_DISABLE=y CONFIG_SECURITY_SELINUX_DEVELOP=y CONFIG_SECURITY_SELINUX_MLS=y # # Cryptographic options # CONFIG_CRYPTO=y CONFIG_CRYPTO_HMAC=y CONFIG_CRYPTO_NULL=m CONFIG_CRYPTO_MD4=m CONFIG_CRYPTO_MD5=y CONFIG_CRYPTO_SHA1=m CONFIG_CRYPTO_SHA256=m CONFIG_CRYPTO_SHA512=m # CONFIG_CRYPTO_WHIRLPOOL is not set CONFIG_CRYPTO_DES=y CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_TWOFISH=m CONFIG_CRYPTO_SERPENT=m CONFIG_CRYPTO_AES=m CONFIG_CRYPTO_CAST5=m CONFIG_CRYPTO_CAST6=m CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_ARC4=m CONFIG_CRYPTO_KHAZAD=m CONFIG_CRYPTO_DEFLATE=m CONFIG_CRYPTO_MICHAEL_MIC=m CONFIG_CRYPTO_CRC32C=m CONFIG_CRYPTO_TEST=m # # Library routines # CONFIG_CRC_CCITT=m CONFIG_CRC32=y CONFIG_LIBCRC32C=m CONFIG_ZLIB_INFLATE=m CONFIG_ZLIB_DEFLATE=m ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-06 11:48 ` Rafael J. Wysocki @ 2004-09-06 12:25 ` Alexander Nyberg 2004-09-06 12:29 ` Ingo Molnar 0 siblings, 1 reply; 25+ messages in thread From: Alexander Nyberg @ 2004-09-06 12:25 UTC (permalink / raw) To: Rafael J. Wysocki; +Cc: Ingo Molnar, linux-kernel, Andi Kleen On Mon, 2004-09-06 at 13:48, Rafael J. Wysocki wrote: > On Monday 06 of September 2004 13:06, Ingo Molnar wrote: > > > > i've released the -R6 patch: > > > > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk12-R6 > > > > Changes in -R6: > > > > - fixed a CONFIG_SMP + CONFIG_PREEMPT bug that had the potential to > > cause spinlock related lockups. (UP kernels are unaffected.) This bug > > got introduced in -R5. > > > > 2.6.9-rc1-bk12 patching order is: > > > > http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2 > > + http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc1.bz2 > > + http://redhat.com/~mingo/voluntary-preempt/patch-2.6.9-rc1-bk12.bz2 > > I did as instructed, but it didn't compile (on a UP x86-64 system). I got > this: > > CC arch/x86_64/kernel/irq.o > arch/x86_64/kernel/irq.c: In function `request_irq': > arch/x86_64/kernel/irq.c:498: warning: implicit declaration of function > `setup_irq' > CC arch/x86_64/kernel/ptrace.o > CC arch/x86_64/kernel/i8259.o > arch/x86_64/kernel/i8259.c: In function `init_IRQ': > arch/x86_64/kernel/i8259.c:570: warning: implicit declaration of function > `setup_irq' > CC arch/x86_64/kernel/ioport.o > CC arch/x86_64/kernel/ldt.o > CC arch/x86_64/kernel/setup.o > CC arch/x86_64/kernel/time.o > arch/x86_64/kernel/time.c: In function `time_init': > arch/x86_64/kernel/time.c:820: warning: implicit declaration of function > `setup_irq' > CC arch/x86_64/kernel/sys_x86_64.o > [- snip -] > C kernel/hardirq.o > kernel/hardirq.c: In function `recalculate_desc_flags': > kernel/hardirq.c:314: error: `SA_NODELAY' undeclared (first use in this > function) > kernel/hardirq.c:314: error: (Each undeclared identifier is reported only once > kernel/hardirq.c:314: error: for each function it appears in.) > kernel/hardirq.c: In function `generic_setup_irq': > kernel/hardirq.c:344: error: `SA_NODELAY' undeclared (first use in this > function) > kernel/hardirq.c: In function `threaded_read_proc': > kernel/hardirq.c:659: error: `SA_NODELAY' undeclared (first use in this > function) > kernel/hardirq.c: In function `threaded_write_proc': > kernel/hardirq.c:677: error: `SA_NODELAY' undeclared (first use in this > function) > make[1]: *** [kernel/hardirq.o] Error 1 > make: *** [kernel] Error 2 > It doesn't look like it is fully ported to x86_64 systems yet, these compile errors are easy to move away but the functionality doesn't seem to be there. Probably why Ingo hasn't added the PREEMPT_VOLUNTARY to the x86_64 Kconfig even though I saw a few bits of x86_64 code in the patch. Or am I missing something? ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-06 12:25 ` Alexander Nyberg @ 2004-09-06 12:29 ` Ingo Molnar 0 siblings, 0 replies; 25+ messages in thread From: Ingo Molnar @ 2004-09-06 12:29 UTC (permalink / raw) To: Alexander Nyberg; +Cc: Rafael J. Wysocki, linux-kernel, Andi Kleen * Alexander Nyberg <alexn@dsv.su.se> wrote: > It doesn't look like it is fully ported to x86_64 systems yet, these > compile errors are easy to move away but the functionality doesn't > seem to be there. Probably why Ingo hasn't added the PREEMPT_VOLUNTARY > to the x86_64 Kconfig even though I saw a few bits of x86_64 code in > the patch. yeah, it probably doesnt compile on anything other than x86 right now. Ingo ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-06 11:06 ` [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 Ingo Molnar 2004-09-06 11:48 ` Rafael J. Wysocki @ 2004-09-08 6:56 ` Lee Revell 2004-09-09 19:29 ` Ingo Molnar 1 sibling, 1 reply; 25+ messages in thread From: Lee Revell @ 2004-09-08 6:56 UTC (permalink / raw) To: Ingo Molnar Cc: linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson On Mon, 2004-09-06 at 07:06, Ingo Molnar wrote: > i've released the -R6 patch: > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk12-R6 I get these latencies when I cause the machine to swap by compiling a kernel with make -j32. They get bigger as the machine gets further into swap. Every 2.0s: head -60 /proc/latency_trace Wed Sep 8 02:51:40 2004 preemption latency trace v1.0.6 on 2.6.9-rc1-bk12-VP-R6 -------------------------------------------------- latency: 605 us, entries: 5 (5) [VP:1 KP:1 SP:1 HP:1 #CPUS:1] ----------------- | task: kswapd0/35, uid:0 nice:0 policy:0 rt_prio:0 ----------------- => started at: get_swap_page+0x23/0x490 => ended at: get_swap_page+0x13f/0x490 =======> 00000001 0.000ms (+0.606ms): get_swap_page (add_to_swap) 00000001 0.606ms (+0.000ms): sub_preempt_count (get_swap_page) 00000001 0.606ms (+0.000ms): update_max_trace (check_preempt_timing) 00000001 0.606ms (+0.000ms): _mmx_memcpy (update_max_trace) 00000001 0.607ms (+0.000ms): kernel_fpu_begin (_mmx_memcpy) Lee ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-08 6:56 ` Lee Revell @ 2004-09-09 19:29 ` Ingo Molnar 2004-09-09 19:33 ` Lee Revell ` (3 more replies) 0 siblings, 4 replies; 25+ messages in thread From: Ingo Molnar @ 2004-09-09 19:29 UTC (permalink / raw) To: Lee Revell, Andrew Morton Cc: linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson * Lee Revell <rlrevell@joe-job.com> wrote: > I get these latencies when I cause the machine to swap by compiling a > kernel with make -j32. They get bigger as the machine gets further > into swap. > > Every 2.0s: head -60 /proc/latency_trace Wed Sep 8 02:51:40 2004 > > preemption latency trace v1.0.6 on 2.6.9-rc1-bk12-VP-R6 > -------------------------------------------------- > latency: 605 us, entries: 5 (5) [VP:1 KP:1 SP:1 HP:1 #CPUS:1] > ----------------- > | task: kswapd0/35, uid:0 nice:0 policy:0 rt_prio:0 > ----------------- > => started at: get_swap_page+0x23/0x490 > => ended at: get_swap_page+0x13f/0x490 > =======> > 00000001 0.000ms (+0.606ms): get_swap_page (add_to_swap) > 00000001 0.606ms (+0.000ms): sub_preempt_count (get_swap_page) > 00000001 0.606ms (+0.000ms): update_max_trace (check_preempt_timing) > 00000001 0.606ms (+0.000ms): _mmx_memcpy (update_max_trace) > 00000001 0.607ms (+0.000ms): kernel_fpu_begin (_mmx_memcpy) yep, the get_swap_page() latency. I can easily trigger 10+ msec latencies on a box with alot of swap by just letting stuff swap out. I had a quick look but there was no obvious way to break the lock. Maybe Andrew has better ideas? get_swap_page() is pretty stupid, it does a near linear search for a free slot in the swap bitmap - this not only is a latency issue but also an overhead thing as we do it for every other page that touches swap. rationale: this is pretty much the only latency that we still having during heavy VM load and it would Just Be Cool if we fixed this final one. audio daemons and apps like jackd use mlockall() so they are not affected by swapping. Ingo ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 19:29 ` Ingo Molnar @ 2004-09-09 19:33 ` Lee Revell 2004-09-09 20:43 ` Lee Revell 2004-09-09 20:05 ` Andrew Morton ` (2 subsequent siblings) 3 siblings, 1 reply; 25+ messages in thread From: Lee Revell @ 2004-09-09 19:33 UTC (permalink / raw) To: Ingo Molnar Cc: Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson, scott On Thu, 2004-09-09 at 15:29, Ingo Molnar wrote: > * Lee Revell <rlrevell@joe-job.com> wrote: > > > I get these latencies when I cause the machine to swap by compiling a > > kernel with make -j32. They get bigger as the machine gets further > > into swap. > > > > Every 2.0s: head -60 /proc/latency_trace Wed Sep 8 02:51:40 2004 > > > > preemption latency trace v1.0.6 on 2.6.9-rc1-bk12-VP-R6 > > -------------------------------------------------- > > latency: 605 us, entries: 5 (5) [VP:1 KP:1 SP:1 HP:1 #CPUS:1] > > ----------------- > > | task: kswapd0/35, uid:0 nice:0 policy:0 rt_prio:0 > > ----------------- > > => started at: get_swap_page+0x23/0x490 > > => ended at: get_swap_page+0x13f/0x490 > > =======> > > 00000001 0.000ms (+0.606ms): get_swap_page (add_to_swap) > > 00000001 0.606ms (+0.000ms): sub_preempt_count (get_swap_page) > > 00000001 0.606ms (+0.000ms): update_max_trace (check_preempt_timing) > > 00000001 0.606ms (+0.000ms): _mmx_memcpy (update_max_trace) > > 00000001 0.607ms (+0.000ms): kernel_fpu_begin (_mmx_memcpy) > > yep, the get_swap_page() latency. I can easily trigger 10+ msec > latencies on a box with alot of swap by just letting stuff swap out. I > had a quick look but there was no obvious way to break the lock. Maybe > Andrew has better ideas? get_swap_page() is pretty stupid, it does a > near linear search for a free slot in the swap bitmap - this not only is > a latency issue but also an overhead thing as we do it for every other > page that touches swap. > > rationale: this is pretty much the only latency that we still having > during heavy VM load and it would Just Be Cool if we fixed this final > one. audio daemons and apps like jackd use mlockall() so they are not > affected by swapping. > I believe Scott Wood suggested a fix back when I first reported this, have to check my mailbox. Scott? Lee ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 19:33 ` Lee Revell @ 2004-09-09 20:43 ` Lee Revell 2004-09-09 20:51 ` Ingo Molnar 2004-09-09 21:03 ` Scott Wood 0 siblings, 2 replies; 25+ messages in thread From: Lee Revell @ 2004-09-09 20:43 UTC (permalink / raw) To: Ingo Molnar Cc: Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson, scott On Thu, 2004-09-09 at 15:33, Lee Revell wrote: > I believe Scott Wood suggested a fix back when I first reported this, > have to check my mailbox. Scott? > Nope, checking the original thread, Scott pointed out that any RT process will have mlockall'ed anyway and thus won't be affected by this latency. So, this one would be cool to fix, but it's not a problem as such. Lee ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 20:43 ` Lee Revell @ 2004-09-09 20:51 ` Ingo Molnar 2004-09-09 21:03 ` Scott Wood 1 sibling, 0 replies; 25+ messages in thread From: Ingo Molnar @ 2004-09-09 20:51 UTC (permalink / raw) To: Lee Revell Cc: Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson, scott * Lee Revell <rlrevell@joe-job.com> wrote: > > I believe Scott Wood suggested a fix back when I first reported this, > > have to check my mailbox. Scott? > > Nope, checking the original thread, Scott pointed out that any RT > process will have mlockall'ed anyway and thus won't be affected by > this latency. So, this one would be cool to fix, but it's not a > problem as such. RT threads will be affected by this latency just as much because it's a non-preemptable critical section. You are right in that an RT task wont see the overhead itself because it doesnt generate swap entries. Ingo ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 20:43 ` Lee Revell 2004-09-09 20:51 ` Ingo Molnar @ 2004-09-09 21:03 ` Scott Wood 1 sibling, 0 replies; 25+ messages in thread From: Scott Wood @ 2004-09-09 21:03 UTC (permalink / raw) To: Lee Revell Cc: Ingo Molnar, Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson, scott On Thu, Sep 09, 2004 at 04:43:49PM -0400, Lee Revell wrote: > On Thu, 2004-09-09 at 15:33, Lee Revell wrote: > > I believe Scott Wood suggested a fix back when I first reported this, > > have to check my mailbox. Scott? > > > > Nope, checking the original thread, Scott pointed out that any RT > process will have mlockall'ed anyway and thus won't be affected by this > latency. So, this one would be cool to fix, but it's not a problem as > such. Though, if this is an actual lock latency (as opposed to merely being a page-fault latency suffered by the task swapping something in), it could affect mlockall'd processes as well due to some other task swapping. One way to fix the latency would be to turn the locks involved into sleeping mutexes. There's a comment in the code saying that swaplock cannot be turned into a semaphore, but it does not say why; if this is due to it nesting in other locks, those locks would need to be converted as well. It could turn into quite a mess doing it manually, though turning all spinlocks into mutexes (except hand-chosen exceptions) should take care of it. -Scott ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 19:29 ` Ingo Molnar 2004-09-09 19:33 ` Lee Revell @ 2004-09-09 20:05 ` Andrew Morton 2004-09-09 20:09 ` Alan Cox ` (2 more replies) 2004-09-09 20:13 ` Lee Revell 2004-09-22 0:17 ` William Lee Irwin III 3 siblings, 3 replies; 25+ messages in thread From: Andrew Morton @ 2004-09-09 20:05 UTC (permalink / raw) To: Ingo Molnar Cc: rlrevell, linux-kernel, felipe_alfaro, mista.tapas, kr, Mark_H_Johnson Ingo Molnar <mingo@elte.hu> wrote: > > yep, the get_swap_page() latency. I can easily trigger 10+ msec > latencies on a box with alot of swap by just letting stuff swap out. I > had a quick look but there was no obvious way to break the lock. Maybe > Andrew has better ideas? get_swap_page() is pretty stupid, it does a > near linear search for a free slot in the swap bitmap - this not only is > a latency issue but also an overhead thing as we do it for every other > page that touches swap. Someone needs to get down and redesign the swap block allocator. I bet latency improvements would fall out of that automatically. The main problem is that swap blocks are now physically clustered according to the page lru ordering, which doesn't have much relationship to process-virtual-address-ordering. The swap allocator made sense when we were doing a virtual scan. It doesn't make much sense now. I did a patch a while back which switches the swapspace allocator over to perform program-virtual-address clustering, but it didn't help much in brief testing and I haven't got back onto it. And contrary to my above assertion, I don't think it'll help latency ;) A short-term bodge would be to scan the map without locks held, take the lock just to actually claim the block, retry if we raced. Use swapon_sem to avoid races. After checking that we never perform GFP_WAIT allocations while holding swapon_sem. The whole thing needs work. diff -puN mm/vmscan.c~swapspace-layout-improvements mm/vmscan.c --- 25/mm/vmscan.c~swapspace-layout-improvements 2004-06-03 21:32:51.087602712 -0700 +++ 25-akpm/mm/vmscan.c 2004-06-03 21:32:51.102600432 -0700 @@ -381,8 +381,11 @@ static int shrink_list(struct list_head * XXX: implement swap clustering ? */ if (PageAnon(page) && !PageSwapCache(page)) { + void *cookie = page->mapping; + pgoff_t index = page->index; + page_map_unlock(page); - if (!add_to_swap(page)) + if (!add_to_swap(page, cookie, index)) goto activate_locked; page_map_lock(page); } diff -puN mm/swap_state.c~swapspace-layout-improvements mm/swap_state.c --- 25/mm/swap_state.c~swapspace-layout-improvements 2004-06-03 21:32:51.089602408 -0700 +++ 25-akpm/mm/swap_state.c 2004-06-03 21:32:51.103600280 -0700 @@ -137,8 +137,12 @@ void __delete_from_swap_cache(struct pag * * Allocate swap space for the page and add the page to the * swap cache. Caller needs to hold the page lock. + * + * We attempt to lay pages out on swap to that virtually-contiguous pages are + * contiguous on-disk. To do this we utilise page->index (offset into vma) and + * page->mapping (the anon_vma's address). */ -int add_to_swap(struct page * page) +int add_to_swap(struct page *page, void *cookie, pgoff_t index) { swp_entry_t entry; int pf_flags; @@ -148,7 +152,7 @@ int add_to_swap(struct page * page) BUG(); for (;;) { - entry = get_swap_page(); + entry = get_swap_page(cookie, index); if (!entry.val) return 0; diff -puN include/linux/swap.h~swapspace-layout-improvements include/linux/swap.h --- 25/include/linux/swap.h~swapspace-layout-improvements 2004-06-03 21:32:51.090602256 -0700 +++ 25-akpm/include/linux/swap.h 2004-06-03 21:32:51.104600128 -0700 @@ -193,7 +193,7 @@ extern int rw_swap_page_sync(int, swp_en extern struct address_space swapper_space; #define total_swapcache_pages swapper_space.nrpages extern void show_swap_cache_info(void); -extern int add_to_swap(struct page *); +extern int add_to_swap(struct page *page, void *cookie, pgoff_t index); extern void __delete_from_swap_cache(struct page *); extern void delete_from_swap_cache(struct page *); extern int move_to_swap_cache(struct page *, swp_entry_t); @@ -210,7 +210,7 @@ extern int total_swap_pages; extern unsigned int nr_swapfiles; extern struct swap_info_struct swap_info[]; extern void si_swapinfo(struct sysinfo *); -extern swp_entry_t get_swap_page(void); +extern swp_entry_t get_swap_page(void *cookie, pgoff_t index); extern int swap_duplicate(swp_entry_t); extern int valid_swaphandles(swp_entry_t, unsigned long *); extern void swap_free(swp_entry_t); @@ -259,7 +259,7 @@ static inline int remove_exclusive_swap_ return 0; } -static inline swp_entry_t get_swap_page(void) +static inline swp_entry_t get_swap_page(void *cookie, pgoff_t index) { swp_entry_t entry; entry.val = 0; diff -puN mm/shmem.c~swapspace-layout-improvements mm/shmem.c --- 25/mm/shmem.c~swapspace-layout-improvements 2004-06-03 21:32:51.092601952 -0700 +++ 25-akpm/mm/shmem.c 2004-06-03 21:32:51.108599520 -0700 @@ -744,7 +744,7 @@ static int shmem_writepage(struct page * struct shmem_inode_info *info; swp_entry_t *entry, swap; struct address_space *mapping; - unsigned long index; + pgoff_t index; struct inode *inode; BUG_ON(!PageLocked(page)); @@ -756,7 +756,7 @@ static int shmem_writepage(struct page * info = SHMEM_I(inode); if (info->flags & VM_LOCKED) goto redirty; - swap = get_swap_page(); + swap = get_swap_page(mapping, index); if (!swap.val) goto redirty; diff -puN mm/swapfile.c~swapspace-layout-improvements mm/swapfile.c --- 25/mm/swapfile.c~swapspace-layout-improvements 2004-06-03 21:32:51.094601648 -0700 +++ 25-akpm/mm/swapfile.c 2004-06-03 23:40:44.396082512 -0700 @@ -25,6 +25,7 @@ #include <linux/rmap.h> #include <linux/security.h> #include <linux/backing-dev.h> +#include <linux/hash.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> @@ -83,71 +84,51 @@ void swap_unplug_io_fn(struct backing_de up_read(&swap_unplug_sem); } -static inline int scan_swap_map(struct swap_info_struct *si) -{ - unsigned long offset; - /* - * We try to cluster swap pages by allocating them - * sequentially in swap. Once we've allocated - * SWAPFILE_CLUSTER pages this way, however, we resort to - * first-free allocation, starting a new cluster. This - * prevents us from scattering swap pages all over the entire - * swap partition, so that we reduce overall disk seek times - * between swap pages. -- sct */ - if (si->cluster_nr) { - while (si->cluster_next <= si->highest_bit) { - offset = si->cluster_next++; - if (si->swap_map[offset]) - continue; - si->cluster_nr--; - goto got_page; - } - } - si->cluster_nr = SWAPFILE_CLUSTER; +int akpm; - /* try to find an empty (even not aligned) cluster. */ - offset = si->lowest_bit; - check_next_cluster: - if (offset+SWAPFILE_CLUSTER-1 <= si->highest_bit) - { - int nr; - for (nr = offset; nr < offset+SWAPFILE_CLUSTER; nr++) - if (si->swap_map[nr]) - { - offset = nr+1; - goto check_next_cluster; - } - /* We found a completly empty cluster, so start - * using it. - */ - goto got_page; - } - /* No luck, so now go finegrined as usual. -Andrea */ - for (offset = si->lowest_bit; offset <= si->highest_bit ; offset++) { - if (si->swap_map[offset]) +/* + * We divide the swapdev into 1024 kilobyte chunks. We use the cookie and the + * upper bits of the index to select a chunk and the rest of the index as the + * offset into the selected chunk. + */ +#define CHUNK_SHIFT (20 - PAGE_SHIFT) +#define CHUNK_MASK (-1UL << CHUNK_SHIFT) + +static int +scan_swap_map(struct swap_info_struct *si, void *cookie, pgoff_t index) +{ + unsigned long chunk; + unsigned long nchunks; + unsigned long block; + unsigned long scan; + + nchunks = si->max >> CHUNK_SHIFT; + chunk = 0; + if (nchunks) + chunk = hash_long((unsigned long)cookie + (index & CHUNK_MASK), + BITS_PER_LONG) % nchunks; + + block = (chunk << CHUNK_SHIFT) + (index & ~CHUNK_MASK); + + for (scan = 0; scan < si->max; scan++, block++) { + if (block == si->max) + block = 0; + if (block == 0) continue; - si->lowest_bit = offset+1; - got_page: - if (offset == si->lowest_bit) - si->lowest_bit++; - if (offset == si->highest_bit) - si->highest_bit--; - if (si->lowest_bit > si->highest_bit) { - si->lowest_bit = si->max; - si->highest_bit = 0; - } - si->swap_map[offset] = 1; - si->inuse_pages++; + if (si->swap_map[block]) + continue; + si->swap_map[block] = 1; nr_swap_pages--; - si->cluster_next = offset+1; - return offset; + if (akpm) + printk("cookie:%p, index:%lu, chunk:%lu nchunks:%lu " + "block:%lu\n", + cookie, index, chunk, nchunks, block); + return block; } - si->lowest_bit = si->max; - si->highest_bit = 0; return 0; } -swp_entry_t get_swap_page(void) +swp_entry_t get_swap_page(void *cookie, pgoff_t index) { struct swap_info_struct * p; unsigned long offset; @@ -166,7 +147,7 @@ swp_entry_t get_swap_page(void) p = &swap_info[type]; if ((p->flags & SWP_ACTIVE) == SWP_ACTIVE) { swap_device_lock(p); - offset = scan_swap_map(p); + offset = scan_swap_map(p, cookie, index); swap_device_unlock(p); if (offset) { entry = swp_entry(type,offset); diff -puN kernel/power/swsusp.c~swapspace-layout-improvements kernel/power/swsusp.c --- 25/kernel/power/swsusp.c~swapspace-layout-improvements 2004-06-03 21:32:51.096601344 -0700 +++ 25-akpm/kernel/power/swsusp.c 2004-06-03 21:32:51.112598912 -0700 @@ -317,7 +317,7 @@ static int write_suspend_image(void) for (i=0; i<nr_copy_pages; i++) { if (!(i%100)) printk( "." ); - if (!(entry = get_swap_page()).val) + if (!(entry = get_swap_page(NULL, i)).val) panic("\nNot enough swapspace when writing data" ); if (swapfile_used[swp_type(entry)] != SWAPFILE_SUSPEND) @@ -334,7 +334,7 @@ static int write_suspend_image(void) cur = (union diskpage *)((char *) pagedir_nosave)+i; BUG_ON ((char *) cur != (((char *) pagedir_nosave) + i*PAGE_SIZE)); printk( "." ); - if (!(entry = get_swap_page()).val) { + if (!(entry = get_swap_page(NULL, i)).val) { printk(KERN_CRIT "Not enough swapspace when writing pgdir\n" ); panic("Don't know how to recover"); free_page((unsigned long) buffer); @@ -356,7 +356,7 @@ static int write_suspend_image(void) BUG_ON (sizeof(struct suspend_header) > PAGE_SIZE-sizeof(swp_entry_t)); BUG_ON (sizeof(union diskpage) != PAGE_SIZE); BUG_ON (sizeof(struct link) != PAGE_SIZE); - if (!(entry = get_swap_page()).val) + if (!(entry = get_swap_page(NULL, i)).val) panic( "\nNot enough swapspace when writing header" ); if (swapfile_used[swp_type(entry)] != SWAPFILE_SUSPEND) panic("\nNot enough swapspace for header on suspend device" ); diff -puN kernel/power/pmdisk.c~swapspace-layout-improvements kernel/power/pmdisk.c --- 25/kernel/power/pmdisk.c~swapspace-layout-improvements 2004-06-03 21:32:51.098601040 -0700 +++ 25-akpm/kernel/power/pmdisk.c 2004-06-03 21:32:51.113598760 -0700 @@ -206,7 +206,7 @@ static int write_swap_page(unsigned long swp_entry_t entry; int error = 0; - entry = get_swap_page(); + entry = get_swap_page(NULL, addr >> PAGE_SHIFT); if (swp_offset(entry) && swapfile_used[swp_type(entry)] == SWAPFILE_SUSPEND) { error = rw_swap_page_sync(WRITE, entry, _ ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 20:05 ` Andrew Morton @ 2004-09-09 20:09 ` Alan Cox 2004-09-09 21:28 ` Andrew Morton 2004-09-09 22:45 ` William Lee Irwin III 2004-09-10 13:28 ` Ingo Molnar 2 siblings, 1 reply; 25+ messages in thread From: Alan Cox @ 2004-09-09 20:09 UTC (permalink / raw) To: Andrew Morton Cc: Ingo Molnar, rlrevell, Linux Kernel Mailing List, felipe_alfaro, mista.tapas, kr, Mark_H_Johnson On Iau, 2004-09-09 at 21:05, Andrew Morton wrote: > I did a patch a while back which switches the swapspace allocator over to > perform program-virtual-address clustering, but it didn't help much in > brief testing and I haven't got back onto it. > > And contrary to my above assertion, I don't think it'll help latency ;) I would still expect the only thing to materially improve swap latency to be a log structured swap, possibly with a cleaner which tidies together pages that are referenced together. You also want contiguous runs of at least 64K and probaly a lot more on bigger memory systems. ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 20:09 ` Alan Cox @ 2004-09-09 21:28 ` Andrew Morton 0 siblings, 0 replies; 25+ messages in thread From: Andrew Morton @ 2004-09-09 21:28 UTC (permalink / raw) To: Alan Cox Cc: mingo, rlrevell, linux-kernel, felipe_alfaro, mista.tapas, kr, Mark_H_Johnson Alan Cox <alan@lxorguk.ukuu.org.uk> wrote: > > I would still expect the only thing to materially improve swap latency > to be a log structured swap, possibly with a cleaner which tidies > together pages that are referenced together. > Maybe. It'd be nice to show some benefit from the "organise pages by virtual address" patch first. But then, maybe that doesn't help because there is little correlation between address congruency and time-of-reference. That's hard to believe though. hm. The patch _does_ do what I wanted it to do. Maybe I tested it with silly workloads. > > You also want contiguous runs of at least 64K and probaly a lot more on > bigger memory systems. I used 1MB. +/* + * We divide the swapdev into 1024 kilobyte chunks. We use the cookie and the + * upper bits of the index to select a chunk and the rest of the index as the + * offset into the selected chunk. + */ +#define CHUNK_SHIFT (20 - PAGE_SHIFT) ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 20:05 ` Andrew Morton 2004-09-09 20:09 ` Alan Cox @ 2004-09-09 22:45 ` William Lee Irwin III 2004-09-09 22:11 ` Alan Cox 2004-09-10 13:28 ` Ingo Molnar 2 siblings, 1 reply; 25+ messages in thread From: William Lee Irwin III @ 2004-09-09 22:45 UTC (permalink / raw) To: Andrew Morton Cc: Ingo Molnar, rlrevell, linux-kernel, felipe_alfaro, mista.tapas, kr, Mark_H_Johnson Ingo Molnar <mingo@elte.hu> wrote: >> yep, the get_swap_page() latency. I can easily trigger 10+ msec >> latencies on a box with alot of swap by just letting stuff swap out. I >> had a quick look but there was no obvious way to break the lock. Maybe >> Andrew has better ideas? get_swap_page() is pretty stupid, it does a >> near linear search for a free slot in the swap bitmap - this not only is >> a latency issue but also an overhead thing as we do it for every other >> page that touches swap. On Thu, Sep 09, 2004 at 01:05:26PM -0700, Andrew Morton wrote: > Someone needs to get down and redesign the swap block allocator. I bet > latency improvements would fall out of that automatically. > The main problem is that swap blocks are now physically clustered according > to the page lru ordering, which doesn't have much relationship to > process-virtual-address-ordering. > The swap allocator made sense when we were doing a virtual scan. It > doesn't make much sense now. Something odd is going on, in part because I get *blistering* IO speeds running benchmarks like dbench, tiobench, et al on tmpfs with striped swap. In fact, IO speeds markedly faster than any other filesystem I've ever tried, by about 30MB/s (i.e. wirespeed, where others fall about 37.5% short of it). Virtual alignment issues do hurt, but the core allocation algorithm appears to be better than good, it's astounding. On Thu, Sep 09, 2004 at 01:05:26PM -0700, Andrew Morton wrote: > I did a patch a while back which switches the swapspace allocator over to > perform program-virtual-address clustering, but it didn't help much in > brief testing and I haven't got back onto it. > And contrary to my above assertion, I don't think it'll help latency ;) > A short-term bodge would be to scan the map without locks held, take the > lock just to actually claim the block, retry if we raced. Use swapon_sem > to avoid races. After checking that we never perform GFP_WAIT allocations > while holding swapon_sem. > The whole thing needs work. Well, yes, dbench on tmpfs isn't really the load we're shooting for. -- wli ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 22:45 ` William Lee Irwin III @ 2004-09-09 22:11 ` Alan Cox 2004-09-09 23:20 ` William Lee Irwin III 0 siblings, 1 reply; 25+ messages in thread From: Alan Cox @ 2004-09-09 22:11 UTC (permalink / raw) To: William Lee Irwin III Cc: Andrew Morton, Ingo Molnar, rlrevell, Linux Kernel Mailing List, felipe_alfaro, mista.tapas, kr, Mark_H_Johnson On Iau, 2004-09-09 at 23:45, William Lee Irwin III wrote: > Something odd is going on, in part because I get *blistering* IO speeds > running benchmarks like dbench, tiobench, et al on tmpfs with striped > swap. In fact, IO speeds markedly faster than any other filesystem I've > ever tried, by about 30MB/s (i.e. wirespeed, where others fall about > 37.5% short of it). Virtual alignment issues do hurt, but the core > allocation algorithm appears to be better than good, it's astounding. Thats a very atypical load where you can expect to get long linear write outs. The seek v write numbers for a disk nowdays have more in common with a tape drive. Paging tends to be much much more random. Alan ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 22:11 ` Alan Cox @ 2004-09-09 23:20 ` William Lee Irwin III 0 siblings, 0 replies; 25+ messages in thread From: William Lee Irwin III @ 2004-09-09 23:20 UTC (permalink / raw) To: Alan Cox Cc: Andrew Morton, Ingo Molnar, rlrevell, Linux Kernel Mailing List, felipe_alfaro, mista.tapas, kr, Mark_H_Johnson On Iau, 2004-09-09 at 23:45, William Lee Irwin III wrote: >> Something odd is going on, in part because I get *blistering* IO speeds >> running benchmarks like dbench, tiobench, et al on tmpfs with striped >> swap. In fact, IO speeds markedly faster than any other filesystem I've >> ever tried, by about 30MB/s (i.e. wirespeed, where others fall about >> 37.5% short of it). Virtual alignment issues do hurt, but the core >> allocation algorithm appears to be better than good, it's astounding. On Thu, Sep 09, 2004 at 11:11:39PM +0100, Alan Cox wrote: > Thats a very atypical load where you can expect to get long linear write > outs. The seek v write numbers for a disk nowdays have more in common > with a tape drive. Paging tends to be much much more random. Yes, I mentioned that those kinds of benchmarks are not the workload we're shooting for in the second part of the message. The commentary regarding dbench et al on tmpfs suggests that the lower-level parts of the algorithm are sound, but are somehow driven inappropriately or in a manner unaligned with what locality of reference there may be. -- wli ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 20:05 ` Andrew Morton 2004-09-09 20:09 ` Alan Cox 2004-09-09 22:45 ` William Lee Irwin III @ 2004-09-10 13:28 ` Ingo Molnar 2004-09-10 14:28 ` Paolo Ciarrocchi 2004-09-10 22:54 ` Lee Revell 2 siblings, 2 replies; 25+ messages in thread From: Ingo Molnar @ 2004-09-10 13:28 UTC (permalink / raw) To: Andrew Morton Cc: rlrevell, linux-kernel, felipe_alfaro, mista.tapas, kr, Mark_H_Johnson [-- Attachment #1: Type: text/plain, Size: 502 bytes --] * Andrew Morton <akpm@osdl.org> wrote: > diff -puN mm/vmscan.c~swapspace-layout-improvements mm/vmscan.c > --- 25/mm/vmscan.c~swapspace-layout-improvements 2004-06-03 21:32:51.087602712 -0700 > +++ 25-akpm/mm/vmscan.c 2004-06-03 21:32:51.102600432 -0700 i've attached a merge against current BK-ish kernels. Lee, would you be interested in testing it? It applies cleanly to an -S0 VP tree. I've tested it only lightly - it compiles and boots and survives some simple swapping but that's all. Ingo [-- Attachment #2: swapspace-layout-improvements-2.6.9-rc1-bk12-A1 --] [-- Type: text/plain, Size: 8058 bytes --] --- linux/include/linux/swap.h.orig +++ linux/include/linux/swap.h @@ -193,7 +193,7 @@ extern int rw_swap_page_sync(int, swp_en extern struct address_space swapper_space; #define total_swapcache_pages swapper_space.nrpages extern void show_swap_cache_info(void); -extern int add_to_swap(struct page *); +extern int add_to_swap(struct page *page, void *cookie, pgoff_t index); extern void __delete_from_swap_cache(struct page *); extern void delete_from_swap_cache(struct page *); extern int move_to_swap_cache(struct page *, swp_entry_t); @@ -209,7 +209,7 @@ extern long total_swap_pages; extern unsigned int nr_swapfiles; extern struct swap_info_struct swap_info[]; extern void si_swapinfo(struct sysinfo *); -extern swp_entry_t get_swap_page(void); +extern swp_entry_t get_swap_page(void *cookie, pgoff_t index); extern int swap_duplicate(swp_entry_t); extern int valid_swaphandles(swp_entry_t, unsigned long *); extern void swap_free(swp_entry_t); @@ -274,7 +274,7 @@ static inline int remove_exclusive_swap_ return 0; } -static inline swp_entry_t get_swap_page(void) +static inline swp_entry_t get_swap_page(void *cookie, pgoff_t index) { swp_entry_t entry; entry.val = 0; --- linux/kernel/power/swsusp.c.orig +++ linux/kernel/power/swsusp.c @@ -317,7 +317,7 @@ static int write_suspend_image(void) for (i=0; i<nr_copy_pages; i++) { if (!(i%100)) printk( "." ); - entry = get_swap_page(); + entry = get_swap_page(NULL, i); if (!entry.val) panic("\nNot enough swapspace when writing data" ); @@ -335,7 +335,7 @@ static int write_suspend_image(void) cur = (union diskpage *)((char *) pagedir_nosave)+i; BUG_ON ((char *) cur != (((char *) pagedir_nosave) + i*PAGE_SIZE)); printk( "." ); - entry = get_swap_page(); + entry = get_swap_page(NULL, i); if (!entry.val) { printk(KERN_CRIT "Not enough swapspace when writing pgdir\n" ); panic("Don't know how to recover"); @@ -358,7 +358,7 @@ static int write_suspend_image(void) BUG_ON (sizeof(struct suspend_header) > PAGE_SIZE-sizeof(swp_entry_t)); BUG_ON (sizeof(union diskpage) != PAGE_SIZE); BUG_ON (sizeof(struct link) != PAGE_SIZE); - entry = get_swap_page(); + entry = get_swap_page(NULL, i); if (!entry.val) panic( "\nNot enough swapspace when writing header" ); if (swapfile_used[swp_type(entry)] != SWAPFILE_SUSPEND) --- linux/kernel/power/pmdisk.c.orig +++ linux/kernel/power/pmdisk.c @@ -206,7 +206,7 @@ static int write_swap_page(unsigned long swp_entry_t entry; int error = 0; - entry = get_swap_page(); + entry = get_swap_page(NULL, addr >> PAGE_SHIFT); if (swp_offset(entry) && swapfile_used[swp_type(entry)] == SWAPFILE_SUSPEND) { error = rw_swap_page_sync(WRITE, entry, --- linux/mm/vmscan.c.orig +++ linux/mm/vmscan.c @@ -390,7 +390,10 @@ static int shrink_list(struct list_head * Try to allocate it some swap space here. */ if (PageAnon(page) && !PageSwapCache(page)) { - if (!add_to_swap(page)) + void *cookie = page->mapping; + pgoff_t index = page->index; + + if (!add_to_swap(page, cookie, index)) goto activate_locked; } #endif /* CONFIG_SWAP */ --- linux/mm/swap_state.c.orig +++ linux/mm/swap_state.c @@ -137,8 +137,12 @@ void __delete_from_swap_cache(struct pag * * Allocate swap space for the page and add the page to the * swap cache. Caller needs to hold the page lock. + * + * We attempt to lay pages out on swap to that virtually-contiguous pages are + * contiguous on-disk. To do this we utilise page->index (offset into vma) and + * page->mapping (the anon_vma's address). */ -int add_to_swap(struct page * page) +int add_to_swap(struct page *page, void *cookie, pgoff_t index) { swp_entry_t entry; int pf_flags; @@ -148,7 +152,7 @@ int add_to_swap(struct page * page) BUG(); for (;;) { - entry = get_swap_page(); + entry = get_swap_page(cookie, index); if (!entry.val) return 0; --- linux/mm/shmem.c.orig +++ linux/mm/shmem.c @@ -740,7 +740,7 @@ static int shmem_writepage(struct page * struct shmem_inode_info *info; swp_entry_t *entry, swap; struct address_space *mapping; - unsigned long index; + pgoff_t index; struct inode *inode; BUG_ON(!PageLocked(page)); @@ -752,7 +752,7 @@ static int shmem_writepage(struct page * info = SHMEM_I(inode); if (info->flags & VM_LOCKED) goto redirty; - swap = get_swap_page(); + swap = get_swap_page(mapping, index); if (!swap.val) goto redirty; --- linux/mm/swapfile.c.orig +++ linux/mm/swapfile.c @@ -25,6 +25,7 @@ #include <linux/rmap.h> #include <linux/security.h> #include <linux/backing-dev.h> +#include <linux/hash.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> @@ -83,71 +84,51 @@ void swap_unplug_io_fn(struct backing_de up_read(&swap_unplug_sem); } -static inline int scan_swap_map(struct swap_info_struct *si) -{ - unsigned long offset; - /* - * We try to cluster swap pages by allocating them - * sequentially in swap. Once we've allocated - * SWAPFILE_CLUSTER pages this way, however, we resort to - * first-free allocation, starting a new cluster. This - * prevents us from scattering swap pages all over the entire - * swap partition, so that we reduce overall disk seek times - * between swap pages. -- sct */ - if (si->cluster_nr) { - while (si->cluster_next <= si->highest_bit) { - offset = si->cluster_next++; - if (si->swap_map[offset]) - continue; - si->cluster_nr--; - goto got_page; - } - } - si->cluster_nr = SWAPFILE_CLUSTER; +int akpm; - /* try to find an empty (even not aligned) cluster. */ - offset = si->lowest_bit; - check_next_cluster: - if (offset+SWAPFILE_CLUSTER-1 <= si->highest_bit) - { - unsigned long nr; - for (nr = offset; nr < offset+SWAPFILE_CLUSTER; nr++) - if (si->swap_map[nr]) - { - offset = nr+1; - goto check_next_cluster; - } - /* We found a completly empty cluster, so start - * using it. - */ - goto got_page; - } - /* No luck, so now go finegrined as usual. -Andrea */ - for (offset = si->lowest_bit; offset <= si->highest_bit ; offset++) { - if (si->swap_map[offset]) +/* + * We divide the swapdev into 1024 kilobyte chunks. We use the cookie and the + * upper bits of the index to select a chunk and the rest of the index as the + * offset into the selected chunk. + */ +#define CHUNK_SHIFT (20 - PAGE_SHIFT) +#define CHUNK_MASK (-1UL << CHUNK_SHIFT) + +static int +scan_swap_map(struct swap_info_struct *si, void *cookie, pgoff_t index) +{ + unsigned long chunk; + unsigned long nchunks; + unsigned long block; + unsigned long scan; + + nchunks = si->max >> CHUNK_SHIFT; + chunk = 0; + if (nchunks) + chunk = hash_long((unsigned long)cookie + (index & CHUNK_MASK), + BITS_PER_LONG) % nchunks; + + block = (chunk << CHUNK_SHIFT) + (index & ~CHUNK_MASK); + + for (scan = 0; scan < si->max; scan++, block++) { + if (block == si->max) + block = 0; + if (block == 0) continue; - si->lowest_bit = offset+1; - got_page: - if (offset == si->lowest_bit) - si->lowest_bit++; - if (offset == si->highest_bit) - si->highest_bit--; - if (si->lowest_bit > si->highest_bit) { - si->lowest_bit = si->max; - si->highest_bit = 0; - } - si->swap_map[offset] = 1; - si->inuse_pages++; + if (si->swap_map[block]) + continue; + si->swap_map[block] = 1; nr_swap_pages--; - si->cluster_next = offset+1; - return offset; + if (akpm) + printk("cookie:%p, index:%lu, chunk:%lu nchunks:%lu " + "block:%lu\n", + cookie, index, chunk, nchunks, block); + return block; } - si->lowest_bit = si->max; - si->highest_bit = 0; return 0; } -swp_entry_t get_swap_page(void) +swp_entry_t get_swap_page(void *cookie, pgoff_t index) { struct swap_info_struct * p; unsigned long offset; @@ -166,7 +147,7 @@ swp_entry_t get_swap_page(void) p = &swap_info[type]; if ((p->flags & SWP_ACTIVE) == SWP_ACTIVE) { swap_device_lock(p); - offset = scan_swap_map(p); + offset = scan_swap_map(p, cookie, index); swap_device_unlock(p); if (offset) { entry = swp_entry(type,offset); ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-10 13:28 ` Ingo Molnar @ 2004-09-10 14:28 ` Paolo Ciarrocchi 2004-09-10 16:45 ` Lee Revell 2004-09-10 22:54 ` Lee Revell 1 sibling, 1 reply; 25+ messages in thread From: Paolo Ciarrocchi @ 2004-09-10 14:28 UTC (permalink / raw) To: Ingo Molnar Cc: Andrew Morton, rlrevell, linux-kernel, felipe_alfaro, mista.tapas, kr, mark_h_johnson On Fri, 10 Sep 2004 15:28:41 +0200, Ingo Molnar <mingo@elte.hu> wrote: > > * Andrew Morton <akpm@osdl.org> wrote: > > > diff -puN mm/vmscan.c~swapspace-layout-improvements mm/vmscan.c > > --- 25/mm/vmscan.c~swapspace-layout-improvements 2004-06-03 21:32:51.087602712 -0700 > > +++ 25-akpm/mm/vmscan.c 2004-06-03 21:32:51.102600432 -0700 > > i've attached a merge against current BK-ish kernels. Lee, would you be > interested in testing it? It applies cleanly to an -S0 VP tree. I've > tested it only lightly - it compiles and boots and survives some simple > swapping but that's all. Hello kernel folks, what's the plan regarding the inclusion of VP in mainstream ? -- Paolo Personal home page: paoloc.doesntexist.org Buy cool stuff here: http://www.cafepress.com/paoloc ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-10 14:28 ` Paolo Ciarrocchi @ 2004-09-10 16:45 ` Lee Revell 0 siblings, 0 replies; 25+ messages in thread From: Lee Revell @ 2004-09-10 16:45 UTC (permalink / raw) To: Paolo Ciarrocchi Cc: Ingo Molnar, Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, kr, mark_h_johnson On Fri, 2004-09-10 at 10:28, Paolo Ciarrocchi wrote: > On Fri, 10 Sep 2004 15:28:41 +0200, Ingo Molnar <mingo@elte.hu> wrote: > > > > * Andrew Morton <akpm@osdl.org> wrote: > > > > > diff -puN mm/vmscan.c~swapspace-layout-improvements mm/vmscan.c > > > --- 25/mm/vmscan.c~swapspace-layout-improvements 2004-06-03 21:32:51.087602712 -0700 > > > +++ 25-akpm/mm/vmscan.c 2004-06-03 21:32:51.102600432 -0700 > > > > i've attached a merge against current BK-ish kernels. Lee, would you be > > interested in testing it? It applies cleanly to an -S0 VP tree. I've > > tested it only lightly - it compiles and boots and survives some simple > > swapping but that's all. > > Hello kernel folks, > what's the plan regarding the inclusion of VP in mainstream ? > I believe the plan is to merge the individual fixes one at a time. See Ingo's recent non-VP-related posts. Once the fixes for all of the real deficiencies in the kernel that the VP patches revealed are merged, then we will have a very small patch. Lee ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-10 13:28 ` Ingo Molnar 2004-09-10 14:28 ` Paolo Ciarrocchi @ 2004-09-10 22:54 ` Lee Revell 2004-09-11 0:21 ` K.R. Foley 1 sibling, 1 reply; 25+ messages in thread From: Lee Revell @ 2004-09-10 22:54 UTC (permalink / raw) To: Ingo Molnar Cc: Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, kr, Mark_H_Johnson On Fri, 2004-09-10 at 09:28, Ingo Molnar wrote: > * Andrew Morton <akpm@osdl.org> wrote: > > > diff -puN mm/vmscan.c~swapspace-layout-improvements mm/vmscan.c > > --- 25/mm/vmscan.c~swapspace-layout-improvements 2004-06-03 21:32:51.087602712 -0700 > > +++ 25-akpm/mm/vmscan.c 2004-06-03 21:32:51.102600432 -0700 > OK, Andrew's patch seems to be an improvement. I can still cause unbounded latencies, but these only seem to happen when we fill all available RAM and swap space, at which point we start spending milliseconds at a time in scan_swap_map: preemption latency trace v1.0.7 on 2.6.9-rc1-bk12-VP-S0 ------------------------------------------------------- latency: 6032 us, entries: 550 (550) | [VP:1 KP:1 SP:1 HP:1 #CPUS:1] ----------------- | task: xfs/1098, uid:0 nice:0 policy:0 rt_prio:0 ----------------- => started at: rtc_interrupt+0x294/0x450 => ended at: get_swap_page+0x13f/0x350 =======> 00010002 0.000ms (+0.000ms): touch_preempt_timing (rtc_interrupt) 00010002 0.000ms (+0.000ms): printk (rtc_interrupt) 00010002 0.000ms (+0.001ms): vprintk (printk) 00010003 0.002ms (+0.000ms): vscnprintf (vprintk) 00010003 0.002ms (+0.002ms): vsnprintf (vscnprintf) 00010003 0.005ms (+0.004ms): number (vsnprintf) 00010003 0.009ms (+0.001ms): number (vsnprintf) 00010003 0.010ms (+0.001ms): number (vsnprintf) 00010003 0.011ms (+0.000ms): emit_log_char (vprintk) [...] 00010002 1.983ms (+0.000ms): preempt_schedule (do_IRQ) 00000003 1.984ms (+0.000ms): do_softirq (do_IRQ) 00000003 1.984ms (+0.911ms): __do_softirq (do_softirq) 00010002 2.896ms (+0.000ms): do_IRQ (scan_swap_map) 00010002 2.896ms (+0.000ms): do_IRQ (<00000008>) 00010003 2.897ms (+0.004ms): mask_and_ack_8259A (do_IRQ) 00010003 2.901ms (+0.000ms): preempt_schedule (do_IRQ) Full trace: http://krustophenia.net/testresults.php?dataset=2.6.9-rc1-bk12-S0#/var/www/2.6.9-rc1-bk12-S0/swapspace-layout-improvements-A1.txt The above are just the initial results; I am still testing this. It certainly seems like it can take a beating. Lee Lee ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-10 22:54 ` Lee Revell @ 2004-09-11 0:21 ` K.R. Foley 0 siblings, 0 replies; 25+ messages in thread From: K.R. Foley @ 2004-09-11 0:21 UTC (permalink / raw) To: Lee Revell Cc: Ingo Molnar, Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, Mark_H_Johnson Lee Revell wrote: > On Fri, 2004-09-10 at 09:28, Ingo Molnar wrote: > >>* Andrew Morton <akpm@osdl.org> wrote: >> >> >>>diff -puN mm/vmscan.c~swapspace-layout-improvements mm/vmscan.c >>>--- 25/mm/vmscan.c~swapspace-layout-improvements 2004-06-03 21:32:51.087602712 -0700 >>>+++ 25-akpm/mm/vmscan.c 2004-06-03 21:32:51.102600432 -0700 >> > > OK, Andrew's patch seems to be an improvement. I can still cause > unbounded latencies, but these only seem to happen when we fill all > available RAM and swap space, at which point we start spending > milliseconds at a time in scan_swap_map: > > I see much improved performance so far. Been running for about 3 hours and the highest latency I've seen thus far is ~260 usec and that was mmap not swap. The highest latency I've seen from swapping is ~198 and we have been in and out of swap at least several times. The latency trace can be seen here: http://www.cybsft.com/testresults/2.6.9-rc1-bk12-S0/latencytrace1.txt kr ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 19:29 ` Ingo Molnar 2004-09-09 19:33 ` Lee Revell 2004-09-09 20:05 ` Andrew Morton @ 2004-09-09 20:13 ` Lee Revell 2004-09-22 0:17 ` William Lee Irwin III 3 siblings, 0 replies; 25+ messages in thread From: Lee Revell @ 2004-09-09 20:13 UTC (permalink / raw) To: Ingo Molnar Cc: Andrew Morton, linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson On Thu, 2004-09-09 at 15:29, Ingo Molnar wrote: > yep, the get_swap_page() latency. I can easily trigger 10+ msec > latencies on a box with alot of swap by just letting stuff swap out. I > had a quick look but there was no obvious way to break the lock. Maybe > Andrew has better ideas? get_swap_page() is pretty stupid, it does a > near linear search for a free slot in the swap bitmap - this not only is > a latency issue but also an overhead thing as we do it for every other > page that touches swap. > > rationale: this is pretty much the only latency that we still having > during heavy VM load and it would Just Be Cool if we fixed this final > one. audio daemons and apps like jackd use mlockall() so they are not > affected by swapping. Considering that the default swappiness behavior is to swap out idle apps to get more page cache, this would indeed be nice to fix. If the default behavior were to not swap until someone actually asks for more memory than we have, it would be less of a concern. Lee ^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 2004-09-09 19:29 ` Ingo Molnar ` (2 preceding siblings ...) 2004-09-09 20:13 ` Lee Revell @ 2004-09-22 0:17 ` William Lee Irwin III 3 siblings, 0 replies; 25+ messages in thread From: William Lee Irwin III @ 2004-09-22 0:17 UTC (permalink / raw) To: Ingo Molnar Cc: Lee Revell, Andrew Morton, Hugh Dickins, linux-kernel, felipe_alfaro, Florian Schmidt, K.R. Foley, Mark_H_Johnson * Lee Revell <rlrevell@joe-job.com> wrote: >> preemption latency trace v1.0.6 on 2.6.9-rc1-bk12-VP-R6 >> -------------------------------------------------- >> latency: 605 us, entries: 5 (5) [VP:1 KP:1 SP:1 HP:1 #CPUS:1] >> ----------------- >> | task: kswapd0/35, uid:0 nice:0 policy:0 rt_prio:0 >> ----------------- >> => started at: get_swap_page+0x23/0x490 >> => ended at: get_swap_page+0x13f/0x490 >> =======> >> 00000001 0.000ms (+0.606ms): get_swap_page (add_to_swap) >> 00000001 0.606ms (+0.000ms): sub_preempt_count (get_swap_page) >> 00000001 0.606ms (+0.000ms): update_max_trace (check_preempt_timing) >> 00000001 0.606ms (+0.000ms): _mmx_memcpy (update_max_trace) >> 00000001 0.607ms (+0.000ms): kernel_fpu_begin (_mmx_memcpy) This appears to be the middle of the function, which is about right... On Thu, Sep 09, 2004 at 09:29:24PM +0200, Ingo Molnar wrote: > yep, the get_swap_page() latency. I can easily trigger 10+ msec > latencies on a box with alot of swap by just letting stuff swap out. I > had a quick look but there was no obvious way to break the lock. Maybe > Andrew has better ideas? get_swap_page() is pretty stupid, it does a > near linear search for a free slot in the swap bitmap - this not only is > a latency issue but also an overhead thing as we do it for every other > page that touches swap. > rationale: this is pretty much the only latency that we still having > during heavy VM load and it would Just Be Cool if we fixed this final > one. audio daemons and apps like jackd use mlockall() so they are not > affected by swapping. I presume most of the time is due to scan_swap_map() and not much of the rest of get_swap_page(). Dangling hierarchical bitmaps off of the swap_info structures to accelerate the search sounds plausible, though code reuse is largely infeasible due to memory allocation concerns (it must be fully-populated during swaplist element creation). The space overhead should be 1 bit per unsigned short at the first level and 1 bit per word for higher levels until the terms vanish. So that's si->max*sum(i>=0,BITS_PER_LONG**i<=si->max)floor(si->max/BITS_PER_LONG**i) <= si->max*/(1-1/BITS_PER_LONG) bits, or si->max*sizeof(long)/(BITS_PER_LONG-1) bytes, which is sizeof(long)/sizeof(short)/(BITS_PER_LONG-1) times the size of the original swap map, which is 2/31 on 32-bit and 4/63 on 64-bit of the size of the original swap map, both of which are just above 1/16 (1/496 above on 32-bit and 1/1008 above on 64-bit), so the space overhead appears to be acceptable. A hierarchical bitmap should reduce the time requirements for the search from O(sum(si) si->max) to O(BITS_PER_LONG/lg(BITS_PER_LONG)). Sound reasonable? -- wli ^ permalink raw reply [flat|nested] 25+ messages in thread
end of thread, other threads:[~2004-09-22 0:17 UTC | newest]
Thread overview: 25+ messages (download: mbox.gz / follow: Atom feed)
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2004-09-08 4:22 [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 Kevin Hilman
2004-09-08 6:39 ` Lee Revell
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2004-09-04 19:51 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R4 Ingo Molnar
2004-09-05 14:02 ` [patch] voluntary-preempt-2.6.9-rc1-bk12-R5 Ingo Molnar
2004-09-06 11:06 ` [patch] voluntary-preempt-2.6.9-rc1-bk12-R6 Ingo Molnar
2004-09-06 11:48 ` Rafael J. Wysocki
2004-09-06 12:25 ` Alexander Nyberg
2004-09-06 12:29 ` Ingo Molnar
2004-09-08 6:56 ` Lee Revell
2004-09-09 19:29 ` Ingo Molnar
2004-09-09 19:33 ` Lee Revell
2004-09-09 20:43 ` Lee Revell
2004-09-09 20:51 ` Ingo Molnar
2004-09-09 21:03 ` Scott Wood
2004-09-09 20:05 ` Andrew Morton
2004-09-09 20:09 ` Alan Cox
2004-09-09 21:28 ` Andrew Morton
2004-09-09 22:45 ` William Lee Irwin III
2004-09-09 22:11 ` Alan Cox
2004-09-09 23:20 ` William Lee Irwin III
2004-09-10 13:28 ` Ingo Molnar
2004-09-10 14:28 ` Paolo Ciarrocchi
2004-09-10 16:45 ` Lee Revell
2004-09-10 22:54 ` Lee Revell
2004-09-11 0:21 ` K.R. Foley
2004-09-09 20:13 ` Lee Revell
2004-09-22 0:17 ` William Lee Irwin III
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