Track the pid per submit, so we can print the name and cmdline of the task which submitted the batch that caused the gpu to hang.
Signed-off-by: Christian Gmeiner christian.gmeiner@gmail.com --- drivers/gpu/drm/etnaviv/etnaviv_gem.h | 1 + drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 6 ++++++ drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 18 +++++++++++++++++- drivers/gpu/drm/etnaviv/etnaviv_gpu.h | 2 +- drivers/gpu/drm/etnaviv/etnaviv_sched.c | 2 +- 5 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h index 63688e6e4580..baa81cbf701a 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h @@ -96,6 +96,7 @@ struct etnaviv_gem_submit { int out_fence_id; struct list_head node; /* GPU active submit list */ struct etnaviv_cmdbuf cmdbuf; + struct pid *pid; /* submitting process */ bool runtime_resumed; u32 exec_state; u32 flags; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c index 1ac916b24891..1491159d0d20 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c @@ -399,6 +399,9 @@ static void submit_cleanup(struct kref *kref) mutex_unlock(&submit->gpu->fence_lock); dma_fence_put(submit->out_fence); } + + put_pid(submit->pid); + kfree(submit->pmrs); kfree(submit); } @@ -422,6 +425,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, struct sync_file *sync_file = NULL; struct ww_acquire_ctx ticket; int out_fence_fd = -1; + struct pid *pid = get_pid(task_pid(current)); void *stream; int ret;
@@ -519,6 +523,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, goto err_submit_ww_acquire; }
+ submit->pid = pid; + ret = etnaviv_cmdbuf_init(priv->cmdbuf_suballoc, &submit->cmdbuf, ALIGN(args->stream_size, 8) + 8); if (ret) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index 37018bc55810..7d9bf4673e2d 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -1045,12 +1045,28 @@ int etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m) } #endif
-void etnaviv_gpu_recover_hang(struct etnaviv_gpu *gpu) +void etnaviv_gpu_recover_hang(struct etnaviv_gem_submit *submit) { + struct etnaviv_gpu *gpu = submit->gpu; + char *comm = NULL, *cmd = NULL; + struct task_struct *task; unsigned int i;
dev_err(gpu->dev, "recover hung GPU!\n");
+ task = get_pid_task(submit->pid, PIDTYPE_PID); + if (task) { + comm = kstrdup(task->comm, GFP_KERNEL); + cmd = kstrdup_quotable_cmdline(task, GFP_KERNEL); + put_task_struct(task); + } + + if (comm && cmd) + dev_err(gpu->dev, "offending task: %s (%s)\n", comm, cmd); + + kfree(cmd); + kfree(comm); + if (pm_runtime_get_sync(gpu->dev) < 0) goto pm_put;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h index 85eddd492774..b3a0941d56fd 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h @@ -168,7 +168,7 @@ bool etnaviv_fill_identity_from_hwdb(struct etnaviv_gpu *gpu); int etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m); #endif
-void etnaviv_gpu_recover_hang(struct etnaviv_gpu *gpu); +void etnaviv_gpu_recover_hang(struct etnaviv_gem_submit *submit); void etnaviv_gpu_retire(struct etnaviv_gpu *gpu); int etnaviv_gpu_wait_fence_interruptible(struct etnaviv_gpu *gpu, u32 fence, struct drm_etnaviv_timespec *timeout); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c index 72e2553fbc98..d29f467eee13 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c @@ -67,7 +67,7 @@ static enum drm_gpu_sched_stat etnaviv_sched_timedout_job(struct drm_sched_job
/* get the GPU back into the init state */ etnaviv_core_dump(submit); - etnaviv_gpu_recover_hang(gpu); + etnaviv_gpu_recover_hang(submit);
drm_sched_resubmit_jobs(&gpu->sched);