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drm/etnaviv: print offender task information on hangcheck recovery

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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>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Christian Gmeiner 2022-06-03 14:37:05 +02:00 committed by Lucas Stach
parent 3d7cb6b04c
commit f51d753f81
5 changed files with 26 additions and 3 deletions
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1
drivers/gpu/drm/etnaviv/etnaviv_gem.h
View File

@ -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;

6
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
View File

@ -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)

18
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
View File

@ -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;

2
drivers/gpu/drm/etnaviv/etnaviv_gpu.h
View File

@ -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);

2
drivers/gpu/drm/etnaviv/etnaviv_sched.c
View File

@ -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);