drm/amdgpu: only set PTL SYSFS disable bit when PTL is disabled

Only set the bit when PTL is actually being disabled (state=0)

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
index 5781a3934b6e7a06a3f197fd5abfda759b21cbd1..d0e7212519f9bf229b75969e0f8e14951d19fffe 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
@@ -2392,7 +2392,7 @@ static int gfx_v9_4_3_perf_monitor_ptl_init(struct amdgpu_device *adev, bool ena
                fmt2 = ptl->fmt2;
        }
 
-       /* initialize PTL with default formats: GFX_FTYPE_I8 & GFX_FTYPE_BF16 */
+       /* initialize PTL with default formats: GFX_FTYPE_VECTOR & GFX_FTYPE_F8 */
        r = amdgpu_ptl_perf_monitor_ctrl(adev, PSP_PTL_PERF_MON_SET, &ptl_state,
                                                        &fmt1, &fmt2);
        if (r)
@@ -2401,6 +2401,13 @@ static int gfx_v9_4_3_perf_monitor_ptl_init(struct amdgpu_device *adev, bool ena
        ptl->hw_supported = true;
 
        atomic_set(&ptl->disable_ref, 0);
+       if (!enable) {
+               dev_dbg(adev->dev,
+                       "PTL disabled (amdgpu.ptl=%d)\
+                       To enable, set amdgpu.ptl=1 via module param or kernel cmdline\n",
+                       amdgpu_ptl);
+               set_bit(AMDGPU_PTL_DISABLE_SYSFS, ptl->disable_bitmap);
+       }
 
        return 0;
 }