diff options
| author | Antonino Maniscalco <antomani103@gmail.com> | 2024-10-03 18:12:58 +0200 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2024-10-03 13:21:52 -0700 |
| commit | 35d36dc1692f4fac5bed918c521adeaff405cdd8 (patch) | |
| tree | da3ee4f33f51f01c9227df680ee1c77a73f9496d | |
| parent | 50117cad0c50410cff0d43a1141a562b1347e7c5 (diff) | |
drm/msm/a6xx: Add traces for preemption
Add trace points corresponding to preemption being triggered and being
completed for latency measurement purposes.
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Tested-by: Rob Clark <robdclark@gmail.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8450-HDK
Signed-off-by: Antonino Maniscalco <antomani103@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/618026/
Signed-off-by: Rob Clark <robdclark@chromium.org>
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a6xx_preempt.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gpu_trace.h | 28 |
2 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_preempt.c b/drivers/gpu/drm/msm/adreno/a6xx_preempt.c index 21e333cb6342..6803d5af60cc 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_preempt.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_preempt.c @@ -7,6 +7,7 @@ #include "a6xx_gpu.h" #include "a6xx_gmu.xml.h" #include "msm_mmu.h" +#include "msm_gpu_trace.h" /* * Try to transition the preemption state from old to new. Return @@ -174,6 +175,8 @@ void a6xx_preempt_irq(struct msm_gpu *gpu) set_preempt_state(a6xx_gpu, PREEMPT_NONE); + trace_msm_gpu_preemption_irq(a6xx_gpu->cur_ring->id); + /* * Retrigger preemption to avoid a deadlock that might occur when preemption * is skipped due to it being already in flight when requested. @@ -294,6 +297,9 @@ void a6xx_preempt_trigger(struct msm_gpu *gpu) */ ring->restore_wptr = false; + trace_msm_gpu_preemption_trigger(a6xx_gpu->cur_ring->id, + ring ? ring->id : -1); + spin_unlock_irqrestore(&ring->preempt_lock, flags); gpu_write64(gpu, diff --git a/drivers/gpu/drm/msm/msm_gpu_trace.h b/drivers/gpu/drm/msm/msm_gpu_trace.h index ac40d857bc45..7f863282db0d 100644 --- a/drivers/gpu/drm/msm/msm_gpu_trace.h +++ b/drivers/gpu/drm/msm/msm_gpu_trace.h @@ -177,6 +177,34 @@ TRACE_EVENT(msm_gpu_resume, TP_printk("%u", __entry->dummy) ); +TRACE_EVENT(msm_gpu_preemption_trigger, + TP_PROTO(int ring_id_from, int ring_id_to), + TP_ARGS(ring_id_from, ring_id_to), + TP_STRUCT__entry( + __field(int, ring_id_from) + __field(int, ring_id_to) + ), + TP_fast_assign( + __entry->ring_id_from = ring_id_from; + __entry->ring_id_to = ring_id_to; + ), + TP_printk("preempting %u -> %u", + __entry->ring_id_from, + __entry->ring_id_to) +); + +TRACE_EVENT(msm_gpu_preemption_irq, + TP_PROTO(u32 ring_id), + TP_ARGS(ring_id), + TP_STRUCT__entry( + __field(u32, ring_id) + ), + TP_fast_assign( + __entry->ring_id = ring_id; + ), + TP_printk("preempted to %u", __entry->ring_id) +); + #endif #undef TRACE_INCLUDE_PATH |