bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 23:03:57 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/sched: Add device name to the drm_sched_process_job event

Browse Source 
Since switching the scheduler from using kthreads to workqueues in
commit a6149f0393 ("drm/sched: Convert drm scheduler to use a work
queue rather than kthread") userspace applications cannot determine
the device from the PID of the threads sending the trace events
anymore.

Each queue had its own kthread which had a given PID for the whole
time. So, at least for amdgpu, it was possible to associate a PID
to the hardware queues of each GPU in the system. Then, when a
drm_run_job trace event was received by userspace, the source PID
allowed to associate it back to the correct GPU.

With workqueues this is not possible anymore, so the event needs to
contain the dev_name() to identify the device.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://lore.kernel.org/r/20250526125505.2360-4-pierre-eric.pelloux-prayer@amd.com
This commit is contained in:
Pierre-Eric Pelloux-Prayer
2025-05-26 14:54:45 +02:00
committed by Philipp Stanner
parent 2956554823
commit d6b7b46232
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
View File

@@ -42,6 +42,7 @@ DECLARE_EVENT_CLASS(drm_sched_job,
__field(uint64_t, id)
__field(u32, job_count)
__field(int, hw_job_count)
__string(dev, dev_name(sched_job->sched->dev))
),
TP_fast_assign(
@@ -52,9 +53,10 @@ DECLARE_EVENT_CLASS(drm_sched_job,
__entry->job_count = spsc_queue_count(&entity->job_queue);
__entry->hw_job_count = atomic_read(
&sched_job->sched->credit_count);
__assign_str(dev);
),
TP_printk("entity=%p, id=%llu, fence=%p, ring=%s, job count:%u, hw job count:%d",
__entry->entity, __entry->id,
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),
__entry->job_count, __entry->hw_job_count)
);