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| author | Vinay Belgaumkar <vinay.belgaumkar@intel.com> | 2025-04-28 11:35:55 -0700 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2025-05-05 12:36:04 +0300 |
| commit | 936b73feab5cd7eae8fe3d08a7ac9b1f8ac68042 (patch) | |
| tree | 460d68c6d389282c9faff2a4ce349f9a30804c77 /rust/helpers/workqueue.c | |
| parent | 92a09c47464d040866cf2b4cd052bc60555185fb (diff) | |
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 <sk.anirban@intel.com>
Reviewed-by: Sk Anirban <sk.anirban@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://lore.kernel.org/r/20250428183555.3250021-1-vinay.belgaumkar@intel.com
(cherry picked from commit d26e55085f4b7a63677670db827541209257b313)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'rust/helpers/workqueue.c')
0 files changed, 0 insertions, 0 deletions