[PATCH] drm/amdgpu: add condition check for trace_amdgpu_cs()

[Kevin Wang]

add trace event enabled check to avoid nop loop when submit multi ibs
in amdgpu_cs_ioctl() function.

Signed-off-by: Kevin Wang <kevin1.wang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index ffbcaf4bfb8b..409694f074ac 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1319,8 +1319,9 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 
 	reserved_buffers = true;
 
-	for (i = 0; i < parser.job->num_ibs; i++)
-		trace_amdgpu_cs(&parser, i);
+	if (trace_amdgpu_cs_enabled())
+		for (i = 0; i < parser.job->num_ibs; i++)
+			trace_amdgpu_cs(&parser, i);
 
 	r = amdgpu_cs_vm_handling(&parser);
 	if (r)
-- 
2.17.1