From 8a491bb31ba40246ae15cbb3c044d72fb9e0d13e Mon Sep 17 00:00:00 2001 From: Philip Cox Date: Mon, 29 Jun 2020 09:49:59 -0400 Subject: [PATCH] drm/amdkfd: Add some eveiction debugging code Extending the module parameter debug_evictions to also print a stack trace when the eviction code path is called. Signed-off-by: Philip Cox Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 1 + drivers/gpu/drm/amd/amdkfd/kfd_process.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index 20ef048d6a03..cafbc3aa980a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -1966,6 +1966,7 @@ int kfd_process_vm_fault(struct device_queue_manager *dqm, if (!p) return -EINVAL; + WARN(debug_evictions, "Evicting pid %d", p->lead_thread->pid); pdd = kfd_get_process_device_data(dqm->dev, p); if (pdd) ret = dqm->ops.evict_process_queues(dqm, &pdd->qpd); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index a0e12a79ab7d..1e15aa7d8ae8 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -1488,6 +1488,7 @@ void kfd_suspend_all_processes(void) unsigned int temp; int idx = srcu_read_lock(&kfd_processes_srcu); + WARN(debug_evictions, "Evicting all processes"); hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) { cancel_delayed_work_sync(&p->eviction_work); cancel_delayed_work_sync(&p->restore_work);