From bb6287cb18866e49501da5c92a130830db6f5a18 Mon Sep 17 00:00:00 2001 From: Tvrtko Ursulin Date: Fri, 1 Apr 2022 15:22:02 +0100 Subject: 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 Reviewed-by: Aravind Iddamsetty # v1 Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Reviewed-by: Umesh Nerlige Ramappa Link: https://patchwork.freedesktop.org/patch/msgid/20220401142205.3123159-6-tvrtko.ursulin@linux.intel.com --- drivers/gpu/drm/i915/gt/intel_context.h | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) (limited to 'drivers/gpu/drm/i915/gt/intel_context.h') 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__ */ -- cgit