diff options
| author | Jonathan Kim <jonathan.kim@amd.com> | 2022-05-10 11:15:29 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-09 12:36:57 -0400 |
| commit | b17bd5dbf64677682a3bca249c64521d5eabcb38 (patch) | |
| tree | b5cb3d726c153234dc12fb29465f13e67dc436a7 /drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | |
| parent | 2b36de971d25daa2ad287114ae3ca11a8f8d49d7 (diff) | |
| download | linux-b17bd5dbf64677682a3bca249c64521d5eabcb38.tar.gz linux-b17bd5dbf64677682a3bca249c64521d5eabcb38.tar.bz2 linux-b17bd5dbf64677682a3bca249c64521d5eabcb38.zip | |
drm/amdkfd: add debug queue snapshot operation
Allow the debugger to get a snapshot of a specified number of queues
containing various queue property information that is copied to the
debugger.
Since the debugger doesn't know how many queues exist at any given time,
allow the debugger to pass the requested number of snapshots as 0 to get
the actual number of potential snapshots to use for a subsequent snapshot
request for actual information.
To prevent future ABI breakage, pass in the requested entry_size.
The KFD will return it's own entry_size in case the debugger still wants
log the information in a core dump on sizing failure.
Also allow the debugger to clear exceptions when doing a snapshot.
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c index 01ccab607a69..9ad1a2186a24 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c @@ -585,6 +585,46 @@ int pqm_get_wave_state(struct process_queue_manager *pqm, save_area_used_size); } +int pqm_get_queue_snapshot(struct process_queue_manager *pqm, + uint64_t exception_clear_mask, + void __user *buf, + int *num_qss_entries, + uint32_t *entry_size) +{ + struct process_queue_node *pqn; + struct kfd_queue_snapshot_entry src; + uint32_t tmp_entry_size = *entry_size, tmp_qss_entries = *num_qss_entries; + int r = 0; + + *num_qss_entries = 0; + if (!(*entry_size)) + return -EINVAL; + + *entry_size = min_t(size_t, *entry_size, sizeof(struct kfd_queue_snapshot_entry)); + mutex_lock(&pqm->process->event_mutex); + + memset(&src, 0, sizeof(src)); + + list_for_each_entry(pqn, &pqm->queues, process_queue_list) { + if (!pqn->q) + continue; + + if (*num_qss_entries < tmp_qss_entries) { + set_queue_snapshot_entry(pqn->q, exception_clear_mask, &src); + + if (copy_to_user(buf, &src, *entry_size)) { + r = -EFAULT; + break; + } + buf += tmp_entry_size; + } + *num_qss_entries += 1; + } + + mutex_unlock(&pqm->process->event_mutex); + return r; +} + static int get_queue_data_sizes(struct kfd_process_device *pdd, struct queue *q, uint32_t *mqd_size, |