From: Jiri Slaby <jslaby@suse.cz>
To: stable@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Long Li <longli@microsoft.com>,
"K . Y . Srinivasan" <kys@microsoft.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Jiri Slaby <jslaby@suse.cz>
Subject: [PATCH 3.12 20/60] scsi: storvsc: use tagged SRB requests if supported by the device
Date: Tue, 14 Mar 2017 14:15:11 +0100 [thread overview]
Message-ID: <ae0182b32e032e182bd0a01e788991b61ba137dc.1489497268.git.jslaby@suse.cz> (raw)
In-Reply-To: <d93cf67053e241539a1ef7c30ee8583022bc0e89.1489497268.git.jslaby@suse.cz>
In-Reply-To: <cover.1489497268.git.jslaby@suse.cz>
From: Long Li <longli@microsoft.com>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 3cd6d3d9b1abab8dcdf0800224ce26daac24eea2 upstream.
Properly set SRB flags when hosting device supports tagged queuing.
This patch improves the performance on Fiber Channel disks.
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/scsi/storvsc_drv.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index f9da66fa850b..c612a76dce49 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -133,6 +133,8 @@ struct hv_fc_wwn_packet {
#define SRB_FLAGS_PORT_DRIVER_RESERVED 0x0F000000
#define SRB_FLAGS_CLASS_DRIVER_RESERVED 0xF0000000
+#define SP_UNTAGGED ((unsigned char) ~0)
+#define SRB_SIMPLE_TAG_REQUEST 0x20
/*
* Platform neutral description of a scsi request -
@@ -1612,6 +1614,13 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
vm_srb->win8_extension.srb_flags |=
SRB_FLAGS_DISABLE_SYNCH_TRANSFER;
+ if (scmnd->device->tagged_supported) {
+ vm_srb->win8_extension.srb_flags |=
+ (SRB_FLAGS_QUEUE_ACTION_ENABLE | SRB_FLAGS_NO_QUEUE_FREEZE);
+ vm_srb->win8_extension.queue_tag = SP_UNTAGGED;
+ vm_srb->win8_extension.queue_action = SRB_SIMPLE_TAG_REQUEST;
+ }
+
/* Build the SRB */
switch (scmnd->sc_data_direction) {
case DMA_TO_DEVICE:
--
2.12.0
next prev parent reply other threads:[~2017-03-14 13:28 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-14 13:15 [PATCH 3.12 00/60] 3.12.72-stable review Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 01/60] md linear: fix a race between linear_add() and linear_congested() Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 02/60] sctp: deny peeloff operation on asocs with threads sleeping on it Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 03/60] net/sched: em_meta: Fix 'meta vlan' to correctly recognize zero VID frames Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 04/60] perf trace: Use the syscall raw_syscalls:sys_enter timestamp Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 05/60] MIPS: Fix special case in 64 bit IP checksumming Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 06/60] MIPS: OCTEON: Fix copy_from_user fault handling for large buffers Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 07/60] MIPS: Clear ISA bit correctly in get_frame_info() Jiri Slaby
2017-03-14 13:14 ` [PATCH 3.12 08/60] MIPS: Prevent unaligned accesses during stack unwinding Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 09/60] MIPS: Fix get_frame_info() handling of microMIPS function size Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 10/60] MIPS: Fix is_jump_ins() handling of 16b microMIPS instructions Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 11/60] MIPS: Calculate microMIPS ra properly when unwinding the stack Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 12/60] MIPS: Handle microMIPS jumps in the same way as MIPS32/MIPS64 jumps Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 13/60] uvcvideo: Fix a wrong macro Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 14/60] ALSA: hda - fix Lewisburg audio issue Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 15/60] ALSA: timer: Reject user params with too small ticks Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 16/60] ALSA: seq: Fix link corruption by event error handling Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 17/60] staging: rtl: fix possible NULL pointer dereference Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 18/60] mm: vmpressure: fix sending wrong events on underflow Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 19/60] ipc/shm: Fix shmat mmap nil-page protection Jiri Slaby
2017-03-14 13:15 ` Jiri Slaby [this message]
2017-03-14 13:15 ` [PATCH 3.12 21/60] scsi: storvsc: properly handle SRB_ERROR when sense message is present Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 22/60] scsi: storvsc: properly set residual data length on errors Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 23/60] scsi: aacraid: Reorder Adapter status check Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 24/60] sd: get disk reference in sd_check_events() Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 25/60] jbd2: don't leak modified metadata buffers on an aborted journal Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 26/60] ext4: trim allocation requests to group size Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 27/60] ext4: preserve the needs_recovery flag when the journal is aborted Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 28/60] ext4: return EROFS if device is r/o and journal replay is needed Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 29/60] samples/seccomp: fix 64-bit comparison macros Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 30/60] ath5k: drop bogus warning on drv_set_key with unsupported cipher Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 31/60] ath9k: use correct OTP register offsets for the AR9340 and AR9550 Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 32/60] fuse: add missing FR_FORCE Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 33/60] can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 34/60] hv: allocate synic pages for all present CPUs Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 35/60] RDMA/core: Fix incorrect structure packing for booleans Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 36/60] rdma_cm: fail iwarp accepts w/o connection params Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 37/60] NFSv4: Fix memory and state leak in _nfs4_open_and_get_state Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 38/60] NFSv4: fix getacl head length estimation Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 39/60] NFSv4: fix getacl ERANGE for some ACL buffer sizes Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 40/60] bcma: use (get|put)_device when probing/removing device driver Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 41/60] powerpc/xmon: Fix data-breakpoint Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 42/60] MIPS: IP22: Reformat inline assembler code to modern standards Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 43/60] MIPS: IP22: Fix build error due to binutils 2.25 uselessnes Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 44/60] scsi: lpfc: Correct WQ creation for pagesize Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 45/60] TTY: n_hdlc, fix lockdep false positive Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 46/60] tty: n_hdlc: get rid of racy n_hdlc.tbuf Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 47/60] serial: 8250_pci: Add MKS Tenta SCOM-0800 and SCOM-0801 cards Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 48/60] KVM: VMX: use correct vmcs_read/write for guest segment selector/base Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 49/60] Bluetooth: Add another AR3012 04ca:3018 device Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 50/60] s390/qdio: clear DSCI prior to scanning multiple input queues Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 51/60] s390: TASK_SIZE for kernel threads Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 52/60] IB/ipoib: Fix deadlock between rmmod and set_mode Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 53/60] ktest: Fix child exit code processing Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 54/60] nlm: Ensure callback code also checks that the files match Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 55/60] xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 56/60] mac80211: flush delayed work when entering suspend Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 57/60] drm/ast: Fix test for VGA enabled Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 58/60] drm/ttm: Make sure BOs being swapped out are cacheable Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 59/60] fat: fix using uninitialized fields of fat_inode/fsinfo_inode Jiri Slaby
2017-03-14 13:15 ` [PATCH 3.12 60/60] drivers: hv: Turn off write permission on the hypercall page Jiri Slaby
2017-03-14 13:24 ` [PATCH 3.12 00/60] 3.12.72-stable review Guenter Roeck
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