diff options
| author | Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> | 2024-05-27 07:30:47 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-08-20 22:06:52 -0400 |
| commit | e189be9b2e3820c88164d95090f1fd6343cd77fc (patch) | |
| tree | 2cfc23344de8ad16d391d22fdbf2075e23f14473 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | dba1a6cfc311833e10df978f07147ea93b7045fa (diff) | |
drm/amdgpu: Add enforce_isolation sysfs attribute
This commit adds a new sysfs attribute 'enforce_isolation' to control
the 'enforce_isolation' setting per GPU. The attribute can be read and
written, and accepts values 0 (disabled) and 1 (enabled).
When 'enforce_isolation' is enabled, reserved VMIDs are allocated for
each ring. When it's disabled, the reserved VMIDs are freed.
The set function locks a mutex before changing the 'enforce_isolation'
flag and the VMIDs, and unlocks it afterwards. This ensures that these
operations are atomic and prevents race conditions and other concurrency
issues.
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Suggested-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index e623af740aa3..2f1bc02309fe 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -4065,6 +4065,8 @@ int amdgpu_device_init(struct amdgpu_device *adev, mutex_init(&adev->pm.stable_pstate_ctx_lock); mutex_init(&adev->benchmark_mutex); mutex_init(&adev->gfx.reset_sem_mutex); + /* Initialize the mutex for cleaner shader isolation between GFX and compute processes */ + mutex_init(&adev->enforce_isolation_mutex); amdgpu_device_init_apu_flags(adev); |