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| author | Alex Xie <AlexBin.Xie@amd.com> | 2017-06-16 09:07:29 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-06-19 17:31:22 -0400 |
| commit | 5ac55629d6b3fcde69f46aa772c6e83be0bdcbbf (patch) | |
| tree | 8ed09ff14dd34aa048296aa3a32e92e749e12d34 /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | 99eea4df901907b9121ad1c726d86c352a5eaca5 (diff) | |
| download | lwn-5ac55629d6b3fcde69f46aa772c6e83be0bdcbbf.tar.gz lwn-5ac55629d6b3fcde69f46aa772c6e83be0bdcbbf.zip | |
drm/amdgpu: Optimize mutex usage (v4)
In original function amdgpu_bo_list_get, the waiting
for result->lock can be quite long while mutex
bo_list_lock was holding. It can make other tasks
waiting for bo_list_lock for long period.
Secondly, this patch allows several tasks(readers of idr)
to proceed at the same time.
v2: use rcu and kref (Dave Airlie and Christian König)
v3: update v1 commit message (Michel Dänzer)
v4: rebase on upstream (Alex Deucher)
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 9f827aca90ee..12d61edb3597 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -869,6 +869,8 @@ struct amdgpu_fpriv { struct amdgpu_bo_list { struct mutex lock; + struct rcu_head rhead; + struct kref refcount; struct amdgpu_bo *gds_obj; struct amdgpu_bo *gws_obj; struct amdgpu_bo *oa_obj; |