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| author | Tvrtko Ursulin <[email protected]> | 2023-05-19 15:49:44 +0000 |
|---|---|---|
| committer | Umesh Nerlige Ramappa <[email protected]> | 2023-05-22 18:07:51 +0000 |
| commit | b319cc594e666061b22331da654606b92730343a (patch) | |
| tree | 3b7f24210fe0a8b500d35b2568da1a21d21b312d /drivers/platform/x86/intel/pmt/class.c | |
| parent | drm/i915/pmu: Transform PMU parking code to be GT based (diff) | |
| download | kernel-b319cc594e666061b22331da654606b92730343a.tar.gz kernel-b319cc594e666061b22331da654606b92730343a.zip | |
drm/i915/pmu: Add reference counting to the sampling timer
We do not want to have timers per tile and waste CPU cycles and energy via
multiple wake-up sources, for a relatively un-important task of PMU
sampling, so keeping a single timer works well. But we also do not want
the first GT which goes idle to turn off the timer.
Add some reference counting, via a mask of unparked GTs, to solve this.
v2: Drop the check for unparked in i915_sample (Ashutosh)
v3: Revert v2 (Tvrtko)
Signed-off-by: Tvrtko Ursulin <[email protected]>
Reviewed-by: Umesh Nerlige Ramappa <[email protected]>
Signed-off-by: Umesh Nerlige Ramappa <[email protected]>
Reviewed-by: Ashutosh Dixit <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Diffstat (limited to 'drivers/platform/x86/intel/pmt/class.c')
0 files changed, 0 insertions, 0 deletions