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| author | Vinay Belgaumkar <[email protected]> | 2025-04-28 18:35:55 +0000 |
|---|---|---|
| committer | Jani Nikula <[email protected]> | 2025-05-05 09:36:04 +0000 |
| commit | 936b73feab5cd7eae8fe3d08a7ac9b1f8ac68042 (patch) | |
| tree | 460d68c6d389282c9faff2a4ce349f9a30804c77 /drivers/hwmon/pwm-fan.c | |
| parent | Linux 6.15-rc5 (diff) | |
| download | kernel-936b73feab5cd7eae8fe3d08a7ac9b1f8ac68042.tar.gz kernel-936b73feab5cd7eae8fe3d08a7ac9b1f8ac68042.zip | |
drm/i915/slpc: Balance the inc/dec for num_waiters
As seen in some recent failures, SLPC num_waiters value is < 0.
This happens because the inc/dec are not balanced. We should skip
decrement for the same conditions as the increment. Currently, we
do that for power saving profile mode. This patch also ensures that
num_waiters is incremented in the case min_softlimit is at boost
freq. It ensures that we don't reduce the frequency while this request
is in flight.
v2: Add Fixes tags
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13598
Fixes: f864a29afc32 ("drm/i915/slpc: Optmize waitboost for SLPC")
Fixes: 4a82ceb04ad4 ("drm/i915/slpc: Add sysfs for SLPC power profiles")
Cc: Sk Anirban <[email protected]>
Reviewed-by: Sk Anirban <[email protected]>
Signed-off-by: Vinay Belgaumkar <[email protected]>
Signed-off-by: Daniele Ceraolo Spurio <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
(cherry picked from commit d26e55085f4b7a63677670db827541209257b313)
Signed-off-by: Jani Nikula <[email protected]>
Diffstat (limited to 'drivers/hwmon/pwm-fan.c')
0 files changed, 0 insertions, 0 deletions