Le 14/11/2024 à 15:56, Steven Rostedt a écrit :
On Thu, 14 Nov 2024 11:01:07 +0100 Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@xxxxxxx> wrote:A fence uniquely identify a job, so this commits updates the places where a kernel pointer was used as an identifier by: "fence=(context:%llu, seqno:%lld)" Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@xxxxxxx> --- .../gpu/drm/scheduler/gpu_scheduler_trace.h | 39 +++++++++++-------- 1 file changed, 22 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h index c4ec28540656..24358c4d5bbe 100644 --- a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h +++ b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h @@ -36,28 +36,29 @@ DECLARE_EVENT_CLASS(drm_sched_job, TP_PROTO(struct drm_sched_job *sched_job, struct drm_sched_entity *entity), TP_ARGS(sched_job, entity), TP_STRUCT__entry( - __field(struct drm_sched_entity *, entity) - __field(struct dma_fence *, fence) __string(name, sched_job->sched->name)The __string() is a 4 byte meta field in the trace event structure. This means if you have a 64bit (8 byte) field following it, there will likely be a 4 byte hole between the two fields. I would suggest swapping the name field with the id field, then you will have four 4 byte fields in a row (name, job_count, hw_job_count, dev), which should fill all the holes.
Good point, I'll swap them and check there's no hole. Pierre-Eric
-- Steve__field(uint64_t, id) __field(u32, job_count) __field(int, hw_job_count) __string(dev, dev_name(sched_job->sched->dev)) + __field(uint64_t, fence_context) + __field(uint64_t, fence_seqno) ),TP_fast_assign(- __entry->entity = entity; __entry->id = sched_job->id; - __entry->fence = &sched_job->s_fence->finished; __assign_str(name); __entry->job_count = spsc_queue_count(&entity->job_queue); __entry->hw_job_count = atomic_read( &sched_job->sched->credit_count); __assign_str(dev); + __entry->fence_context = sched_job->s_fence->finished.context; + __entry->fence_seqno = sched_job->s_fence->finished.seqno; + ), - TP_printk("dev=%s, entity=%p, id=%llu, fence=%p, ring=%s, job count:%u, hw job count:%d", - __get_str(dev), __entry->entity, __entry->id, - __entry->fence, __get_str(name), + TP_printk("dev=%s, id=%llu, fence=(context:%llu, seqno:%lld), ring=%s, job count:%u, hw job count:%d", + __get_str(dev), __entry->id, + __entry->fence_context, __entry->fence_seqno, __get_str(name), __entry->job_count, __entry->hw_job_count) );
