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Daniele Ceraolo Spurio 8843444843 drm/xe/guc: Set RCS/CCS yield policy 
All recent platforms (including all the ones officially supported by the
Xe driver) do not allow concurrent execution of RCS and CCS workloads
from different address spaces, with the HW blocking the context switch
when it detects such a scenario.
The DUAL_QUEUE flag helps with this, by causing the GuC to not submit a
context it knows will not be able to execute. This, however, causes a new
problem: if RCS and CCS queues have pending workloads from different
address spaces, the GuC needs to choose from which of the 2 queues to
pick the next workload to execute. By default, the GuC prioritizes RCS
submissions over CCS ones, which can lead to CCS workloads being
significantly (or completely) starved of execution time.
The driver can tune this by setting a dedicated scheduling policy KLV;
this KLV allows the driver to specify a quantum (in ms) and a ratio
(percentage value between 0 and 100), and the GuC will prioritize the CCS
for that percentage of each quantum.
Given that we want to guarantee enough RCS throughput to avoid missing
frames, we set the yield policy to 20% of each 80ms interval.

v2: updated quantum and ratio, improved comment, use xe_guc_submit_disable
in gt_sanitize

Fixes: d9a1ae0d17 ("drm/xe/guc: Enable WA_DUAL_QUEUE for newer platforms")
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Tested-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Link: https://lore.kernel.org/r/20250905235632.3333247-2-daniele.ceraolospurio@intel.com
 		2025-09-11 09:45:35 -07:00
..
accel Merge drm/drm-next into drm-misc-next 2025-08-20 09:33:06 +02:00
accessibility
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acpi Merge branches 'acpi-ec' and 'acpi-processor' 2025-08-14 13:09:27 +02:00
amba
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android Char / Misc / IIO / other driver updates for 6.17-rc1 2025-07-29 09:52:01 -07:00
ata ata: libata-scsi: Fix CDL control 2025-08-14 18:58:12 +09:00
atm
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auxdisplay
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base regmap: Fixes for v6.17 2025-08-09 08:40:28 +03:00
bcma treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
block ublk: check for unprivileged daemon on each I/O fetch 2025-08-11 07:57:48 -06:00
bluetooth Bluetooth: btintel_pcie: Fix Alive Context State Handling 2025-07-23 10:34:30 -04:00
bus soc: driver updates for 6.17 2025-07-29 11:13:27 -07:00
cache
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cdrom cdrom: Call cdrom_mrw_exit from cdrom_release function 2025-07-22 19:10:17 -06:00
cdx cdx: Fix missing GENERIC_MSI_IRQ on compile test 2025-07-16 14:17:31 +02:00
char Some small fixes for the IPMI driver 2025-08-07 07:38:25 +03:00
clk This is the usual collection of primarily clk driver updates. The big part of 2025-07-31 13:36:27 -07:00
clocksource A treewide cleanup of struct cycle_counter const annotations: 2025-07-29 14:02:53 -07:00
comedi Char / Misc / IIO / other driver updates for 6.17-rc1 2025-07-29 09:52:01 -07:00
connector
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counter
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cpufreq cpufreq: intel_pstate: Support Clearwater Forest OOB mode 2025-08-11 21:49:47 +02:00
cpuidle cpuidle: governors: menu: Avoid using invalid recent intervals data 2025-08-11 21:46:14 +02:00
crypto This update includes the following changes: 2025-07-31 09:45:28 -07:00
cxl Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
dax
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dca
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devfreq
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dio
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dma dmaengine updates for v6.17 2025-08-01 12:35:12 -07:00
dma-buf drm for 6.17-rc1 2025-07-30 19:26:49 -07:00
dpll dpll: zl3073x: ZL3073X_I2C and ZL3073X_SPI should depend on NET 2025-08-04 17:22:55 -07:00
edac - i10nm: 2025-07-29 16:30:38 -07:00
eisa
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extcon
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firewire firewire: core: reallocate buffer for FCP address handlers when more than 4 are registered 2025-08-03 21:20:15 +09:00
firmware EFI updates for v6.17 2025-08-09 18:10:01 +03:00
fpga
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fsi Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
fwctl
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gnss
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gpio gpio: mlxbf3: use platform_get_irq_optional() 2025-08-12 15:40:28 +02:00
gpu drm/xe/guc: Set RCS/CCS yield policy 2025-09-11 09:45:35 -07:00
greybus
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hid treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
hsi
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hte
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hv ARM: 2025-07-30 17:14:01 -07:00
hwmon treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
hwspinlock
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hwtracing
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i2c treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
i3c i3c: add missing include to internal header 2025-07-31 02:25:17 +02:00
idle intel_idle: Allow loading ACPI tables for any family 2025-08-11 21:43:26 +02:00
iio treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
infiniband RDMA v6.17 merge window second pull request 2025-08-07 07:36:23 +03:00
input treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
interconnect Char / Misc / IIO / other driver updates for 6.17-rc1 2025-07-29 09:52:01 -07:00
iommu pci-v6.17-changes 2025-08-01 13:59:07 -07:00
ipack
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irqchip irqchip/mvebu-gicp: Use resource_size() for ioremap() 2025-08-06 17:00:40 +02:00
isdn
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leds treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
macintosh
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mailbox mailbox/pcc: support mailbox management of the shared buffer 2025-08-07 23:49:56 -05:00
mcb mcb: use sysfs_emit_at() instead of scnprintf() in show functions 2025-07-16 14:17:07 +02:00
md block-6.17-20250808 2025-08-09 08:47:28 +03:00
media treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
memory Memory controller drivers for v6.17 2025-07-22 22:47:00 +02:00
memstick memstick: core: Zero initialize id_reg in h_memstick_read_dev_id() 2025-07-16 12:01:09 +02:00
message
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mfd treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
misc treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
mmc MMC core: 2025-07-29 12:05:38 -07:00
most
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mtd * MTD changes: 2025-07-31 13:43:02 -07:00
mux hardening updates for v6.17-rc1 2025-07-28 17:16:12 -07:00
net Including fixes from Netfilter and IPsec. 2025-08-14 07:14:30 -07:00
nfc
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ntb
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nubus
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nvdimm Summary of significant series in this pull request: 2025-07-31 14:57:54 -07:00
nvme nvmet: exit debugfs after discovery subsystem exits 2025-08-07 06:27:58 -06:00
nvmem Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
of ARM: 2025-07-30 17:14:01 -07:00
opp
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parisc parisc/power: Move soft-power into power.c 2025-07-23 11:52:48 +02:00
parport
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pci pci-v6.17-fixes-1 2025-08-09 08:39:05 +03:00
pcmcia
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peci
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perf
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phy phy-for-6.17 2025-08-01 12:31:50 -07:00
pinctrl treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
platform treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
pmdomain pmdomain: qcom: rpmhpd: Add Glymur RPMh Power Domains 2025-07-23 12:12:16 +02:00
pnp
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power power supply and reset changes for the 6.17 series 2025-07-31 21:39:01 -07:00
powercap platform-drivers-x86 for v6.17-1 2025-07-28 23:21:28 -07:00
pps
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ps3
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ptp ptp: prevent possible ABBA deadlock in ptp_clock_freerun() 2025-08-12 14:17:35 -07:00
pwm treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
rapidio
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ras
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regulator regulator: Fix for v6.17 2025-08-09 08:41:53 +03:00
remoteproc remoteproc updates for v6.17 2025-08-01 15:02:25 -07:00
reset This is the usual collection of primarily clk driver updates. The big part of 2025-07-31 13:36:27 -07:00
rpmsg remoteproc updates for v6.17 2025-08-01 15:02:25 -07:00
rtc RTC for 6.17 2025-08-03 20:17:34 -07:00
s390 more s390 updates for 6.17 merge window 2025-08-08 06:56:55 +03:00
sbus
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scsi Merge branch '6.17/scsi-queue' into 6.17/scsi-fixes 2025-08-12 21:36:18 -04:00
sh
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siox
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slimbus
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soc soc/tegra: pmc: Ensure power-domains are in a known state 2025-08-11 12:24:43 +02:00
soundwire soundwire updates for 6.17 2025-08-01 11:09:27 -07:00
spi spi: Fixes for v6.17 2025-08-09 08:43:24 +03:00
spmi
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ssb treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
staging treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
target SCSI misc on 20250806 2025-08-06 15:44:25 +03:00
tc
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tee
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thermal Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
thunderbolt thunderbolt: Fix copy+paste error in match_service_id() 2025-07-21 16:33:43 +02:00
tty treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
ufs Merge branch '6.17/scsi-queue' into 6.17/scsi-fixes 2025-08-12 21:36:18 -04:00
uio
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usb treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
vdpa vdpa: Fix IDR memory leak in VDUSE module exit 2025-08-01 09:11:08 -04:00
vfio VFIO updates for v6.17-rc1 v2 2025-08-07 07:32:50 +03:00
vhost vhost: initialize vq->nheads properly 2025-08-05 05:57:40 -04:00
video gpio updates for v6.17-rc1 2025-08-09 08:15:43 +03:00
virt virt: sev-guest: Satisfy linear mapping requirement in get_derived_key() 2025-08-15 17:05:39 +02:00
virtio virtio, vhost: features, fixes 2025-08-01 14:17:48 -07:00
w1
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watchdog watchdog: sbsa: Adjust keepalive timeout to avoid MediaTek WS0 race condition 2025-07-28 12:07:08 +02:00
xen
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zorro
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Kconfig drm for 6.17-rc1 2025-07-30 19:26:49 -07:00
Makefile
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