On Tue, 28 Jul, at 12:35:36AM, Jiang Liu wrote: > Hi Matt, > Sorry for the regression. Could you please help to provide > more information about the regression, such dmesg, /proc/interrupts > and hardware(PCI) info from good and bad kernels? See below. Let me know if you need anything else. 00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) 00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09) 00:04.0 Signal processing controller: Intel Corporation Broadwell-U Camarillo Device (rev 09) 00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03) 00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03) 00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3) 00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3) 00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03) 00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03) 00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03) 00:1f.6 Signal processing controller: Intel Corporation Wildcat Point-LP Thermal Management Controller (rev 03) 01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5249 PCI Express Card Reader (rev 01) 02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59) [BAD] CPU0 CPU1 CPU2 CPU3 0: 60 0 0 0 IR-IO-APIC 2-edge timer 1: 4535 2225 12990 2486 IR-IO-APIC 1-edge i8042 3: 1 0 0 0 IR-IO-APIC 3-edge 6: 0 0 0 0 IR-IO-APIC 6-edge dw_dmac 7: 15 1 0 0 IR-IO-APIC 7-edge INT3432:00, INT3433:00 8: 0 0 1 0 IR-IO-APIC 8-edge rtc0 9: 1078 737 1761 536 IR-IO-APIC 9-fasteoi acpi 12: 5 4 64 13 IR-IO-APIC 12-edge i8042 40: 0 0 0 0 DMAR-MSI 0-edge dmar0 41: 0 0 0 0 DMAR-MSI 1-edge dmar1 42: 0 0 0 0 IR-PCI-MSI 458752-edge PCIe PME 43: 0 0 0 0 IR-PCI-MSI 464896-edge PCIe PME 44: 263825 97055 149799 86574 IR-PCI-MSI 32768-edge i915 45: 4 1 20 1 IR-PCI-MSI 360448-edge mei_me 46: 8 7 10 5 IR-PCI-MSI 524288-edge rtsx_pci 47: 265262 96130 273599 126469 IR-PCI-MSI 512000-edge 0000:00:1f.2 48: 6151 3298 11082 2702 IR-PCI-MSI 327680-edge xhci_hcd 49: 826 91 920 257 IR-PCI-MSI 49152-edge snd_hda_intel 50: 363127 229106 850576 196544 IR-PCI-MSI 1048576-edge iwlwifi NMI: 2190 2399 2221 1874 Non-maskable interrupts LOC: 8199446 7602675 7137979 4973130 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 2190 2399 2221 1874 Performance monitoring interrupts IWI: 0 1 1 0 IRQ work interrupts RTR: 3 0 0 0 APIC ICR read retries RES: 1117932 1200561 1398843 873543 Rescheduling interrupts CAL: 145275 153343 122202 118672 Function call interrupts TLB: 30552 30936 31487 32651 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 71 71 71 71 Machine check polls ERR: 15 MIS: 0 [GOOD] CPU0 CPU1 CPU2 CPU3 0: 60 0 0 0 IR-IO-APIC-edge timer 1: 73 26 135 54 IR-IO-APIC-edge i8042 3: 16 17 49 20 IR-IO-APIC-fasteoi AudioDSP, dw_dmac 6: 0 0 0 0 IR-IO-APIC-fasteoi dw_dmac 7: 2662 3072 12307 5419 IR-IO-APIC-fasteoi INT3432:00, INT3433:00 8: 0 0 1 0 IR-IO-APIC-edge rtc0 9: 265 48 280 85 IR-IO-APIC-fasteoi acpi 12: 20 5 61 2 IR-IO-APIC-edge i8042 37: 0 0 0 0 IR-IO-APIC 37-fasteoi rt286 39: 415 74 480 116 IR-IO-APIC 39-fasteoi DLL0665:01 40: 0 0 0 0 DMAR-MSI 0-edge dmar0 41: 0 0 0 0 DMAR-MSI 1-edge dmar1 42: 0 0 0 0 IR-PCI-MSI 458752-edge PCIe PME 43: 0 0 0 0 IR-PCI-MSI 464896-edge PCIe PME 44: 1007 402 696 280 IR-PCI-MSI 32768-edge i915 45: 4 1 20 0 IR-PCI-MSI 360448-edge mei_me 46: 19 1 10 0 IR-PCI-MSI 524288-edge rtsx_pci 47: 12101 9057 14481 30320 IR-PCI-MSI 512000-edge 0000:00:1f.2 48: 64 29 126 27 IR-PCI-MSI 327680-edge xhci_hcd 49: 635 21 1179 269 IR-PCI-MSI 49152-edge snd_hda_intel 50: 147 60 164 222 IR-PCI-MSI 1048576-edge iwlwifi NMI: 16 12 18 11 Non-maskable interrupts LOC: 21542 28287 23149 17203 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 16 12 18 11 Performance monitoring interrupts IWI: 0 0 1 0 IRQ work interrupts RTR: 3 0 0 0 APIC ICR read retries RES: 5425 8358 6069 5476 Rescheduling interrupts CAL: 308 297 340 293 Function call interrupts TLB: 424 422 432 437 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 2 2 2 2 Machine check polls ERR: 0 MIS: 0 -- Matt Fleming, Intel Open Source Technology Center