AuxXxilium/linux_dsm_epyc7002
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b7404c7ecb
linux_dsm_epyc7002/drivers
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Chris Wilson b7404c7ecb drm/i915: Bump ready tasks ahead of busywaits 
Consider two tasks that are running in parallel on a pair of engines
(vcs0, vcs1), but then must complete on a shared engine (rcs0). To
maximise throughput, we want to run the first ready task on rcs0 (i.e.
the first task that completes on either of vcs0 or vcs1). When using
semaphores, however, we will instead queue onto rcs in submission order.

To resolve this incorrect ordering, we want to re-evaluate the priority
queue when each of the request is ready. Normally this happens because
we only insert into the priority queue requests that are ready, but with
semaphores we are inserting ahead of their readiness and to compensate
we penalize those tasks with reduced priority (so that tasks that do not
need to busywait should naturally be run first). However, given a series
of tasks that each use semaphores, the queue degrades into submission
fifo rather than readiness fifo, and so to counter this we give a small
boost to semaphore users as their dependent tasks are completed (and so
we no longer require any busywait prior to running the user task as they
are then ready themselves).

v2: Fixup irqsave for schedule_lock (Tvrtko)

Testcase: igt/gem_exec_schedule/semaphore-codependency
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com>
Cc: Dmitry Ermilov <dmitry.ermilov@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190409152922.23894-1-chris@chris-wilson.co.uk
2019-04-11 07:14:27 +01:00
..
accessibility
acpi ACPI / utils: Drop reference in test for device presence 2019-03-19 22:34:21 +01:00
amba ARM: 8836/1: drivers: amba: Update component matching to use the CoreSight UCI values. 2019-02-26 11:23:49 +00:00
android binder: reduce mmap_sem write-side lock 2019-02-19 14:50:11 +01:00
ata SCSI misc on 20190306 2019-03-09 16:53:47 -08:00
atm
auxdisplay auxdisplay: charlcd: make backlight initial state configurable 2019-03-17 08:48:45 +01:00
base Device properties framework fix for 5.1-rc2 2019-03-22 12:08:52 -07:00
bcma
block for-linus-20190323 2019-03-23 10:14:42 -07:00
bluetooth Bluetooth: mediatek: add support for MediaTek MT7663U and MT7668U UART devices 2019-03-02 19:51:23 +01:00
bus ARM: SoC driver updates for 5.1 2019-03-06 09:41:12 -08:00
cdrom
char Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-03-10 17:37:29 -07:00
clk We have a fairly balanced mix of clk driver updates and clk framework 2019-03-14 08:46:17 -07:00
clocksource clocksource/drivers/clps711x: Remove board support 2019-03-24 11:30:11 +01:00
connector connector: fix unsafe usage of ->real_parent 2019-03-08 15:06:38 -08:00
cpufreq cpufreq: intel_pstate: Fix up iowait_boost computation 2019-03-12 09:47:30 +01:00
cpuidle cpuidle: governor: Add new governors to cpuidle_governors again 2019-03-12 23:46:55 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-03-13 09:51:17 -07:00
dax device-dax for 5.1 2019-03-16 13:05:32 -07:00
dca
devfreq
dio
dma dmaengine updates for v5.1-rc1 2019-03-14 09:11:54 -07:00
dma-buf dma-buf: add some lockdep asserts to the reservation object implementation 2019-02-27 23:51:43 +01:00
edac Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-03-08 09:11:39 -08:00
eisa
extcon
firewire
firmware memblock: drop memblock_alloc_*_nopanic() variants 2019-03-12 10:04:02 -07:00
fmc
fpga
fsi
gnss
gpio pci-v5.1-changes 2019-03-09 14:57:08 -08:00
gpu drm/i915: Bump ready tasks ahead of busywaits 2019-04-11 07:14:27 +01:00
hid Merge branch 'for-5.1/wacom' into for-linus 2019-03-05 15:43:05 +01:00
hsi
hv Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
hwmon hwmon: (ad7418) Add device tree probing 2019-02-25 09:06:00 -08:00
hwspinlock
hwtracing ARM updates for 5.1-rc1 2019-03-15 14:37:46 -07:00
i2c i2c: i2c-designware-platdrv: Always use a dynamic adapter number 2019-03-13 18:07:10 +01:00
i3c - Add a /* fall-through */ comment in the dw-i3c-master driver 2019-03-04 19:05:02 -08:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide 2019-03-11 09:34:00 -07:00
idle
iio - New Drivers 2019-03-08 10:02:58 -08:00
infiniband i40iw: Avoid panic when handling the inetdev event 2019-03-17 21:40:40 -03:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2019-03-11 10:57:11 -07:00
interconnect
iommu iommu/vt-d: Save the right domain ID used by hardware 2019-03-22 12:02:27 +01:00
ipack
irqchip irqchip/irq-mvebu-sei: Make mvebu_sei_ap806_caps static 2019-03-21 16:43:00 +01:00
isdn isdn: hfcpci: fix potential NULL pointer dereference 2019-03-12 14:36:02 -07:00
leds platform-drivers-x86 for v5.1-1 2019-03-10 13:16:37 -07:00
lightnvm pblk: fix max_io calculation 2019-03-07 08:59:26 -07:00
macintosh treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
mailbox mailbox: imx: keep MU irq working during suspend/resume 2019-03-11 02:51:43 -05:00
mcb
md for-5.1/block-post-20190315 2019-03-16 12:36:39 -07:00
media media: vsp1: drm: Implement writeback support 2019-03-18 17:24:14 +02:00
memory
memstick
message
mfd DMA mapping updates for 5.1 2019-03-10 11:54:48 -07:00
misc 5.1 Merge Window Pull Request 2019-03-09 15:53:03 -08:00
mmc mmc: renesas_sdhi: limit block count to 16 bit for old revisions 2019-03-21 11:41:46 +01:00
mtd This pull request contains updates for both UBI and UBIFS: 2019-03-13 09:34:35 -07:00
mux
net IB/mlx5: Use mlx5 core to create/destroy a DEVX DCT 2019-03-17 21:40:39 -03:00
nfc
ntb Fixes for switchtec debugability and mapping table entries, NTB 2019-03-15 14:32:59 -07:00
nubus
nvdimm device-dax for 5.1 2019-03-16 13:05:32 -07:00
nvme for-5.1/block-post-20190315 2019-03-16 12:36:39 -07:00
nvmem Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
of of: fix kmemleak crash caused by imbalance in early memory reservation 2019-03-12 10:04:02 -07:00
opp PM / OPP: Update performance state when freq == old_freq 2019-03-12 09:45:56 +01:00
oprofile
parisc DMA mapping updates for 5.1 2019-03-10 11:54:48 -07:00
parport
pci IOMMU Updates for Linux v5.1 2019-03-10 12:29:52 -07:00
pcmcia
perf arm64 updates for 5.1: 2019-03-10 10:17:23 -07:00
phy drm next pull request for 5.1 2019-03-08 08:23:15 -08:00
pinctrl This is the bulk of pin control changes for the v5.1 kernel cycle. 2019-03-11 11:12:50 -07:00
platform Chrome Platform fixes for v5.1-rc2 2019-03-19 11:28:15 -07:00
pnp ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting 2019-02-24 21:12:01 +01:00
power power: reset: at91-reset: add support for sam9x60 SoC 2019-02-20 00:41:01 +01:00
powercap powercap/intel_rapl: add Ice Lake mobile 2019-02-18 11:31:39 +01:00
pps
ps3
ptp Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-03-05 14:08:26 -08:00
pwm pwm: atmel: Remove useless symbolic definitions 2019-03-04 12:52:49 +01:00
rapidio rapidio/mport_cdev: mark expected switch fall-through 2019-03-07 18:32:02 -08:00
ras
regulator regulator: mc13xxx: Constify regulator_ops variables 2019-03-04 00:01:08 +00:00
remoteproc remoteproc updates for v5.1 2019-03-14 09:00:06 -07:00
reset
rpmsg rpmsg: virtio: change header file sort style 2019-02-20 21:15:54 -08:00
rtc chrome platform changes for v5.1 2019-03-12 09:46:32 -07:00
s390 ARM: some cleanups, direct physical timer assignment, cache sanitization 2019-03-15 15:00:28 -07:00
sbus
scsi scsi: ibmvscsi: Fix empty event pool access during host removal 2019-03-20 20:13:17 -04:00
sfi
sh
siox
slimbus
sn
soc ARM: SoC driver updates for 5.1 2019-03-06 09:41:12 -08:00
soundwire
spi pci-v5.1-changes 2019-03-09 14:57:08 -08:00
spmi
ssb
staging drm-misc-next for 5.2: 2019-03-25 11:05:12 +01:00
target SCSI misc on 20190315 2019-03-16 12:51:50 -07:00
tc
tee ARM: SoC driver updates for 5.1 2019-03-06 09:41:12 -08:00
thermal Merge branches 'fixes' and 'thermal-intel' into next 2019-03-18 22:37:44 +08:00
thunderbolt
tty dmaengine updates for v5.1-rc1 2019-03-14 09:11:54 -07:00
uio
usb memblock: drop memblock_alloc_*_nopanic() variants 2019-03-12 10:04:02 -07:00
uwb
vfio powerpc updates for 5.1 2019-03-07 12:56:26 -08:00
vhost virtio: fixes, cleanups 2019-03-10 12:47:57 -07:00
video fbdev changes for v5.1: 2019-03-15 14:22:59 -07:00
virt virt: vbox: Mark expected switch fall-through 2019-02-27 16:00:20 +01:00
virtio virtio: hint if callbacks surprisingly might sleep 2019-03-06 11:19:57 -05:00
visorbus
vlynq
vme
w1
watchdog linux-watchdog 5.1-rc1 tag 2019-03-11 11:22:15 -07:00
xen xen/balloon: Fix mapping PG_offline pages to user space 2019-03-15 15:35:35 +01:00
zorro
Kconfig
Makefile IOMMU Updates for Linux v5.1 2019-03-10 12:29:52 -07:00