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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-12-15 18:44:56 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-12-18 01:26:38 +0300 |
| commit | 8c3b1ba0e7ea9a80b0ee4b4445ea59c806787813 (patch) | |
| tree | af373b01f89b42bac5795f29ec4c1b57b1ee9662 /drivers/gpu/drm/i915/i915_pmu.c | |
| parent | e3ed90b8227eaf7d67ea0a2e81af9a09c71c8e8d (diff) | |
| download | linux-8c3b1ba0e7ea9a80b0ee4b4445ea59c806787813.tar.xz | |
drm/i915/gt: Track the overall awake/busy time
Since we wake the GT up before executing a request, and go to sleep as
soon as it is retired, the GT wake time not only represents how long the
device is powered up, but also provides a summary, albeit an overestimate,
of the device runtime (i.e. the rc0 time to compare against rc6 time).
v2: s/busy/awake/
v3: software-gt-awake-time and I915_PMU_SOFTWARE_GT_AWAKE_TIME
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215154456.13954-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pmu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pmu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index 37716a89c682..7af4fabe5594 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -509,6 +509,8 @@ config_status(struct drm_i915_private *i915, u64 config) if (!HAS_RC6(i915)) return -ENODEV; break; + case I915_PMU_SOFTWARE_GT_AWAKE_TIME: + break; default: return -ENOENT; } @@ -616,6 +618,9 @@ static u64 __i915_pmu_event_read(struct perf_event *event) case I915_PMU_RC6_RESIDENCY: val = get_rc6(&i915->gt); break; + case I915_PMU_SOFTWARE_GT_AWAKE_TIME: + val = ktime_to_ns(intel_gt_get_awake_time(&i915->gt)); + break; } } @@ -916,6 +921,7 @@ create_event_attributes(struct i915_pmu *pmu) __event(I915_PMU_REQUESTED_FREQUENCY, "requested-frequency", "M"), __event(I915_PMU_INTERRUPTS, "interrupts", NULL), __event(I915_PMU_RC6_RESIDENCY, "rc6-residency", "ns"), + __event(I915_PMU_SOFTWARE_GT_AWAKE_TIME, "software-gt-awake-time", "ns"), }; static const struct { enum drm_i915_pmu_engine_sample sample; |