diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2020-12-14 12:43:48 +0300 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2020-12-14 15:55:48 +0300 |
| commit | c51c29fb35f76a2616694079725fb2cf001de1de (patch) | |
| tree | c3cd82a280872819e2739a0a31c2716607fa447d /drivers/gpu/drm/i915/i915_pmu.c | |
| parent | dbe13ae1d6abaab417edf3c37601c6a56594a4cd (diff) | |
| download | linux-c51c29fb35f76a2616694079725fb2cf001de1de.tar.xz | |
drm/i915/pmu: Use raw clock for rc6 estimation
RC6 is a hardware counter and as such estimating it using the raw clock
during runtime suspend is more appropriate.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
References: 34f439278cef ("perf: Add per event clockid support")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20201214094349.3563876-2-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pmu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pmu.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index 204253c2f2c0..ca11922e1102 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -163,9 +163,9 @@ static u64 __get_rc6(struct intel_gt *gt) #if IS_ENABLED(CONFIG_PM) -static inline s64 ktime_since(const ktime_t kt) +static inline s64 ktime_since_raw(const ktime_t kt) { - return ktime_to_ns(ktime_sub(ktime_get(), kt)); + return ktime_to_ns(ktime_sub(ktime_get_raw(), kt)); } static u64 get_rc6(struct intel_gt *gt) @@ -194,7 +194,7 @@ static u64 get_rc6(struct intel_gt *gt) * on top of the last known real value, as the approximated RC6 * counter value. */ - val = ktime_since(pmu->sleep_last); + val = ktime_since_raw(pmu->sleep_last); val += pmu->sample[__I915_SAMPLE_RC6].cur; } @@ -217,7 +217,7 @@ static void init_rc6(struct i915_pmu *pmu) pmu->sample[__I915_SAMPLE_RC6].cur = __get_rc6(&i915->gt); pmu->sample[__I915_SAMPLE_RC6_LAST_REPORTED].cur = pmu->sample[__I915_SAMPLE_RC6].cur; - pmu->sleep_last = ktime_get(); + pmu->sleep_last = ktime_get_raw(); } } @@ -226,7 +226,7 @@ static void park_rc6(struct drm_i915_private *i915) struct i915_pmu *pmu = &i915->pmu; pmu->sample[__I915_SAMPLE_RC6].cur = __get_rc6(&i915->gt); - pmu->sleep_last = ktime_get(); + pmu->sleep_last = ktime_get_raw(); } #else |