Enable pc sampling start.
Signed-off-by: James Zhu <James.Zhu@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_pc_sampling.c | 27 +++++++++++++++++---
1 file changed, 24 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_pc_sampling.c b/drivers/gpu/drm/amd/amdkfd/kfd_pc_sampling.c
index df2f4bfd0cda..6f50ba1f8989 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_pc_sampling.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_pc_sampling.c
@@ -95,9 +95,30 @@ static int kfd_pc_sample_query_cap(struct kfd_process_device *pdd,
return 0;
}
-static int kfd_pc_sample_start(struct kfd_process_device *pdd)
+static int kfd_pc_sample_start(struct kfd_process_device *pdd,
+ struct pc_sampling_entry *pcs_entry)
{
- return -EINVAL;
+ bool pc_sampling_start = false;
+
+ pcs_entry->enabled = true;
+ mutex_lock(&pdd->dev->pcs_data.mutex);
+
+ kfd_process_set_trap_pc_sampling_flag(&pdd->qpd,
+ pdd->dev->pcs_data.hosttrap_entry.base.pc_sample_info.method, true);
+
+ if (!pdd->dev->pcs_data.hosttrap_entry.base.active_count)
+ pc_sampling_start = true;
+ pdd->dev->pcs_data.hosttrap_entry.base.active_count++;
+ mutex_unlock(&pdd->dev->pcs_data.mutex);
+
+ while (pc_sampling_start) {
+ if (READ_ONCE(pdd->dev->pcs_data.hosttrap_entry.base.stop_enable))
+ usleep_range(1000, 2000);
+ else
+ break;
+ }
+
+ return 0;
}
static int kfd_pc_sample_stop(struct kfd_process_device *pdd,
@@ -269,7 +290,7 @@ int kfd_pc_sample(struct kfd_process_device *pdd,
if (pcs_entry->enabled)
return -EALREADY;
else
- return kfd_pc_sample_start(pdd);
+ return kfd_pc_sample_start(pdd, pcs_entry);
case KFD_IOCTL_PCS_OP_STOP:
if (!pcs_entry->enabled)
--
2.25.1
