diff options
| author | Matthew Brost <matthew.brost@intel.com> | 2024-09-17 22:44:36 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2024-10-03 01:13:54 -0500 |
| commit | d1ef967126e295d36201e79ec64efdba31710353 (patch) | |
| tree | 5425b6da21ac48ceded381101756dd8275853e7c /drivers/gpu/drm/xe/xe_gt_pagefault.c | |
| parent | cb58977016d1b25781743e5fbe6a545493785e37 (diff) | |
drm/xe: Convert to USM lock to rwsem
Remove contention from GPU fault path for ASID->VM lookup.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240918054436.1971839-1-matthew.brost@intel.com
(cherry picked from commit 1378c633a3fbfeb344c486ffda0e920a21e62712)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gt_pagefault.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_pagefault.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_pagefault.c b/drivers/gpu/drm/xe/xe_gt_pagefault.c index 00af059a8971..5c3af2bb5402 100644 --- a/drivers/gpu/drm/xe/xe_gt_pagefault.c +++ b/drivers/gpu/drm/xe/xe_gt_pagefault.c @@ -198,13 +198,13 @@ static int handle_pagefault(struct xe_gt *gt, struct pagefault *pf) return -EFAULT; /* ASID to VM */ - mutex_lock(&xe->usm.lock); + down_read(&xe->usm.lock); vm = xa_load(&xe->usm.asid_to_vm, pf->asid); if (vm && xe_vm_in_fault_mode(vm)) xe_vm_get(vm); else vm = NULL; - mutex_unlock(&xe->usm.lock); + up_read(&xe->usm.lock); if (!vm) return -EINVAL; @@ -549,11 +549,11 @@ static int handle_acc(struct xe_gt *gt, struct acc *acc) return -EINVAL; /* ASID to VM */ - mutex_lock(&xe->usm.lock); + down_read(&xe->usm.lock); vm = xa_load(&xe->usm.asid_to_vm, acc->asid); if (vm) xe_vm_get(vm); - mutex_unlock(&xe->usm.lock); + up_read(&xe->usm.lock); if (!vm || !xe_vm_in_fault_mode(vm)) return -EINVAL; |