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linux/drivers
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Akash Goel 5aa1ee4b12 drm/i915: Add stats for GuC log buffer flush interrupts 
GuC firmware sends an interrupt to flush the log buffer when it
becomes half full. GuC firmware also tracks how many times the
buffer overflowed.
It would be useful to maintain a statistics of how many flush
interrupts were received and for which type of log buffer,
along with the overflow count of each buffer type.
Augmented i915_log_info debugfs to report back these statistics.

v2:
- Update the logic to detect multiple overflows between the 2
  flush interrupts and also log a message for overflow (Tvrtko)
- Track the number of times there was no free sub buffer to capture
  the GuC log buffer. (Tvrtko)

v3:
- Fix the printf field width for overflow counter, set it to 10 as per the
  max value of u32, which takes 10 digits in decimal form. (Tvrtko)

v4:
- Move the log buffer overflow handling to a new function for better
  readability. (Tvrtko)

Signed-off-by: Akash Goel <akash.goel@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
History 2016-10-25 09:34:23 +01:00
..
accessibility printk: move braille console support into separate braille.[ch] files 2013-07-31 14:41:03 -07:00
acpi More ACPI updates for v4.9-rc1 2016-10-14 12:50:05 -07:00
amba ARM: 8596/1: amba: Support clk parents and rates assigned in DT 2016-08-12 16:47:07 +01:00
android Revert "android: binder: fix dangling pointer comparison" 2016-08-18 17:21:37 +02:00
ata ahci: qoriq: Revert "ahci: qoriq: Disable NCQ on ls2080a SoC" 2016-09-30 10:28:51 +02:00
atm atm: iphase: fix newline escape and minor tweak to source formatting 2016-09-15 19:15:55 -04:00
auxdisplay auxdisplay: img-ascii-lcd: driver for simple ASCII LCD displays 2016-10-06 17:03:41 +02:00
base memory-hotplug: fix store_mem_state() return value 2016-10-07 18:46:28 -07:00
bcma bcma: use of_dma_configure() to set initial dma mask 2016-09-09 12:00:37 +03:00
block rbd: don't retry watch reregistration if header object is gone 2016-10-15 23:22:09 +02:00
bluetooth Bluetooth: btusb: Fix atheros firmware download error 2016-10-07 09:46:56 +02:00
bus ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
cdrom cdrom: support read sub-channel command in LBA format 2016-07-12 08:24:50 -07:00
char A small bug fix and a new driver for acting as an IPMI device. 2016-10-23 15:56:23 -07:00
clk ARM: SoC: late DT updates for v4.9 2016-10-07 21:34:49 -07:00
clocksource Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init" 2016-10-20 21:58:58 +02:00
connector connector: make cn_proc explicitly non-modular 2016-07-05 11:40:47 -07:00
cpufreq More power management updates for v4.9-rc1 2016-10-14 12:46:13 -07:00
cpuidle Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-10-10 14:04:16 -07:00
dax Merge branch 'for-4.9/dax' into libnvdimm-for-next 2016-10-07 16:46:30 -07:00
dca dmaengine: ioatdma: constify dca_ops structures 2015-11-16 09:27:32 +05:30
devfreq PM / devfreq: Skip status update on uninitialized previous_freq 2016-10-11 00:01:20 +02:00
dio m68k: don't export static inline functions 2009-12-06 11:18:28 +01:00
dma dmaengine updates for 4.8-rc1 2016-10-06 17:13:54 -07:00
dma-buf Merge tag 'topic/drm-misc-2016-10-24' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-10-25 16:35:20 +10:00
edac * Altera Arria10 enablement of NAND, DMA, USB, QSPI and SD-MMC FIFO 2016-10-04 12:06:26 -07:00
eisa Revert "EISA: Initialize device before its resources" 2014-01-17 14:57:29 -07:00
extcon Merge branch 'next' into resolution 2016-09-15 16:45:20 +05:30
firewire firewire: nosy: do not ignore errors in ioremap_nocache() 2016-10-09 11:38:11 +02:00
firmware efi/arm: Fix absolute relocation detection for older toolchains 2016-10-19 14:49:44 +02:00
fmc Merge 3.14-rc5 into char-misc-next 2014-03-02 19:53:09 -08:00
fpga fpga manager: Add hardware dependency to Zynq driver 2016-09-08 17:31:44 +02:00
gpio gpio: pca953x: add a comment explaining the need for a lockdep subclass 2016-10-11 23:17:08 +02:00
gpu drm/i915: Add stats for GuC log buffer flush interrupts 2016-10-25 09:34:23 +01:00
hid HID: add quirk for Akai MIDImix. 2016-10-10 10:58:22 +02:00
hsi HSI: omap_ssi: drop pm_runtime_irq_safe 2016-06-28 00:40:08 +02:00
hv Drivers: hv: get rid of id in struct vmbus_channel 2016-09-27 12:35:49 +02:00
hwmon hwmon: (max31790) potential ERR_PTR dereference 2016-10-17 10:16:20 -07:00
hwspinlock hwspinlock: qcom_hwspinlock: add missing of_node_put after calling of_parse_phandle 2016-07-06 12:20:34 -07:00
hwtracing coresight: tmc: mark symbols static where possible 2016-09-09 13:53:00 +02:00
i2c i2c: 'i2c-bus' node support for v4.8-rc1 2016-10-11 23:37:26 +02:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide 2016-07-29 13:29:06 -07:00
idle nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
iio Staging/IIO patches for 4.9-rc1 2016-10-05 14:50:51 -07:00
infiniband Merge branch 'gup_flag-cleanups' 2016-10-19 08:39:47 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-10-14 13:19:30 -07:00
iommu IOMMU Updates for Linux v4.9 2016-10-11 12:52:41 -07:00
ipack tty: Replace ASYNC_INITIALIZED bit and update atomically 2016-04-30 09:26:55 -07:00
irqchip GIC updates for Linux 4.9-rc2 2016-10-21 21:40:29 +02:00
isdn mISDN: mark symbols static where possible 2016-09-01 23:36:17 -07:00
leds leds: triggers: Check return value of kobject_uevent_env() 2016-09-20 10:22:10 +02:00
lguest Merge branch 'x86/urgent' into x86/asm to pick up dependent fixes 2016-04-13 11:36:44 +02:00
lightnvm Merge branch 'for-4.9/block' of git://git.kernel.dk/linux-block 2016-10-07 14:42:05 -07:00
macintosh powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
mailbox Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration 2016-10-06 17:36:53 -07:00
mcb mcb: Add a dma_device to mcb_device 2016-09-27 12:33:47 +02:00
md kthread: kthread worker API cleanup 2016-10-11 15:06:33 -07:00
media Merge branch 'gup_flag-cleanups' 2016-10-19 08:39:47 -07:00
memory ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
memstick memstick: rtsx_usb_ms: Manage runtime PM when accessing the device 2016-10-17 15:43:05 +02:00
message scsi: fusion: Fix error return code in mptfc_probe() 2016-09-14 14:26:19 -04:00
mfd - Core Frameworks 2016-10-07 08:35:35 -07:00
misc powerpc fixes for 4.9 #3 2016-10-21 19:13:00 -07:00
mmc mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led 2016-10-17 15:43:03 +02:00
mtd UBI: Fix crash in try_recover_peb() 2016-10-20 00:06:06 +02:00
net Merge of the qedr RoCE driver 2016-10-14 13:43:08 -07:00
nfc NFC 4.8 pull request 2016-07-20 23:39:36 -07:00
ntb ntb: add DMA error handling for RX DMA 2016-08-08 08:11:42 +05:30
nubus nubus: Remove superfluous interrupt disable/restore 2014-10-27 11:03:19 +01:00
nvdimm Merge branch 'for-4.9/dax' into libnvdimm-for-next 2016-10-07 16:46:30 -07:00
nvme Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2016-10-21 10:54:01 -07:00
nvmem ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
of Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
oprofile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
parisc dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
parport parport: use subsys_initcall 2016-04-30 13:56:46 -07:00
pci PCI: designware-plat: Update author email address 2016-10-21 09:54:46 -05:00
pcmcia pcmcia: soc_common: add driver-data pointer 2016-09-22 09:39:16 +01:00
perf perf: xgene: Remove bogus IS_ERR() check 2016-10-17 15:50:07 +01:00
phy phy-twl4030-usb: initialize charging-related stuff via pm_runtime 2016-09-14 10:59:12 +05:30
pinctrl pinctrl: intel: Only restore pins that are used by the driver 2016-10-18 14:38:16 +02:00
platform platform-drivers-x86 for 4.9-2 2016-10-19 11:45:06 -07:00
pnp PNP: isapnp: make core more explicitly non-modular 2016-08-16 22:53:59 +02:00
power power supply and reset changes for the v4.9 series 2016-10-06 18:21:15 -07:00
powercap x86/cpu: Rename Merrifield2 to Moorefield 2016-09-08 08:13:08 +02:00
pps pps: kc: fix non-tickless system config dependency 2016-10-11 15:06:32 -07:00
ps3 powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
ptp drivers/ptp: Fix kernel memory disclosure 2016-10-13 10:20:06 -04:00
pwm Merge branch 'for-4.9/drivers' into for-next 2016-09-08 10:59:30 +02:00
rapidio mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
ras x86/ras: Move AMD MCE injector to arch/x86/ras/ 2015-08-13 10:12:54 +02:00
regulator Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-10-12 11:05:23 -07:00
remoteproc rpmsg updates for v4.9 2016-10-06 17:03:49 -07:00
reset reset: hi6220: allow to compile test driver on other architectures 2016-08-30 17:09:14 +02:00
rpmsg rpmsg: smd: fix dependency on QCOM_SMD=n 2016-09-12 07:05:13 -07:00
rtc RTC for 4.9 2016-10-14 13:13:44 -07:00
s390 scsi: zfcp: spin_lock_irqsave() is not nestable 2016-10-14 16:21:08 -04:00
sbus openprom: fix warning 2016-05-20 18:33:37 -07:00
scsi SCSI fixes on 20161021 2016-10-21 10:57:09 -07:00
sfi SFI: fix compiler warnings 2014-12-03 18:49:20 -05:00
sh drivers: sh: Stop using the legacy clock domain on ARM 2016-05-30 09:41:11 +09:00
sn Drivers: misc: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
soc powerpc updates for 4.9 #2 2016-10-14 11:07:42 -07:00
spi kthread: kthread worker API cleanup 2016-10-11 15:06:33 -07:00
spmi spmi: pmic-arb: Return an error code if sanity check fails 2016-09-27 12:43:34 +02:00
ssb SSB: Change bare unsigned to unsigned int to suit coding style 2016-07-06 15:09:36 +02:00
staging mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
target target/tcm_fc: use CPU affinity for responses 2016-10-21 01:19:44 -07:00
tc TC: Error handling clean-ups 2014-11-24 07:45:25 +01:00
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-10-12 11:05:23 -07:00
thunderbolt thunderbolt: Don't declare Falcon Ridge unsupported 2016-08-31 13:25:02 +02:00
tty kthread: kthread worker API cleanup 2016-10-11 15:06:33 -07:00
uio uio: fix dmem_region_start computation 2016-08-31 13:07:30 +02:00
usb Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
uwb uwb: hwa-rc: don't print error when allocating urb fails 2016-08-15 15:52:40 +02:00
vfio vfio_pci: use pci_alloc_irq_vectors 2016-09-29 13:36:38 -06:00
vhost Merge 4.8-rc5 into char-misc-next 2016-09-05 08:04:07 +02:00
video Merge tag 'topic/drm-misc-2016-10-24' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-10-25 16:35:20 +10:00
virt mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
virtio virtio: mark vring_dma_dev() static 2016-09-09 21:12:35 +03:00
vlynq drivers/vlynq/vlynq.c: fix another resource size off by 1 error 2014-01-23 16:36:55 -08:00
vme vme: fake: remove unexpected unlock in fake_master_set() 2016-09-27 12:43:35 +02:00
w1 w1: fix timeout_us parameter description 2016-08-31 13:56:05 +02:00
watchdog Merge branches 'acpi-wdat' and 'acpi-cppc' 2016-10-21 22:24:23 +02:00
xen xen: features and fixes for 4.9-rc0 2016-10-06 11:19:10 -07:00
zorro zorro: Use kobj_to_dev() 2016-01-25 09:42:23 +01:00
Kconfig libnvdimm for 4.7 2016-05-23 11:18:01 -07:00
Makefile A small bug fix and a new driver for acting as an IPMI device. 2016-10-23 15:56:23 -07:00