git/linux-net
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ synced 2026-04-18 06:33:43 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: Add enforce_isolation sysfs attribute

Browse Source 
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>
This commit is contained in:
Srinivasan Shanmugam
2024-05-27 07:30:47 +05:30
committed by Alex Deucher
parent dba1a6cfc3
commit e189be9b2e
4 changed files with 107 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@@ -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);