diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2022-04-01 15:22:02 +0100 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2022-04-05 08:39:10 +0100 |
| commit | bb6287cb18866e49501da5c92a130830db6f5a18 (patch) | |
| tree | e9754a6dffc7f04e8f7f3a204883950849aea6d7 /drivers/gpu/drm/i915/gt/intel_context.h | |
| parent | 49bd54b390c2095708faec9c4d2f9fde4acf2f59 (diff) | |
drm/i915: Track context current active time
Track context active (on hardware) status together with the start
timestamp.
This will be used to provide better granularity of context
runtime reporting in conjunction with already tracked pphwsp accumulated
runtime.
The latter is only updated on context save so does not give us visibility
to any currently executing work.
As part of the patch the existing runtime tracking data is moved under the
new ce->stats member and updated under the seqlock. This provides the
ability to atomically read out accumulated plus active runtime.
v2:
* Rename and make __intel_context_get_active_time unlocked.
v3:
* Use GRAPHICS_VER.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com> # v1
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220401142205.3123159-6-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_context.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_context.h | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_context.h b/drivers/gpu/drm/i915/gt/intel_context.h index d8c74bbf9aae..b7d3214d2cdd 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.h +++ b/drivers/gpu/drm/i915/gt/intel_context.h @@ -351,18 +351,13 @@ intel_context_clear_nopreempt(struct intel_context *ce) clear_bit(CONTEXT_NOPREEMPT, &ce->flags); } -static inline u64 intel_context_get_total_runtime_ns(struct intel_context *ce) -{ - const u32 period = ce->engine->gt->clock_period_ns; - - return READ_ONCE(ce->runtime.total) * period; -} +u64 intel_context_get_total_runtime_ns(const struct intel_context *ce); +u64 intel_context_get_avg_runtime_ns(struct intel_context *ce); -static inline u64 intel_context_get_avg_runtime_ns(struct intel_context *ce) +static inline u64 intel_context_clock(void) { - const u32 period = ce->engine->gt->clock_period_ns; - - return mul_u32_u32(ewma_runtime_read(&ce->runtime.avg), period); + /* As we mix CS cycles with CPU clocks, use the raw monotonic clock. */ + return ktime_get_raw_fast_ns(); } #endif /* __INTEL_CONTEXT_H__ */ |