Commit 1d724a2f authored by Matthew Brost's avatar Matthew Brost
Browse files

drm/xe: Retry BO allocation 



TTM doesn't support fair eviction via WW locking, this mitigated in by
using retry loops in exec and preempt rebind worker. Extend this retry
loop to BO allocation. Once TTM supports fair eviction this patch can be
reverted.

v4:
 - Keep line break (Stuart)

Signed-off-by: default avatarMatthew Brost <matthew.brost@intel.com>
Reviewed-by: default avatarGwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: default avatarStuart Summers <stuart.summers@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-2-matthew.brost@intel.com
parent 5148da09

drivers/gpu/drm/xe/xe_bo.c

+7 −0
Original line number Diff line number Diff line
@@ -2273,6 +2273,7 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data, 
	struct xe_file *xef = to_xe_file(file);

	struct drm_xe_gem_create *args = data;

	struct xe_vm *vm = NULL;

	ktime_t end = 0;

	struct xe_bo *bo;

	unsigned int bo_flags;

	u32 handle;
@@ -2344,6 +2345,10 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data, 
		vm = xe_vm_lookup(xef, args->vm_id);

		if (XE_IOCTL_DBG(xe, !vm))

			return -ENOENT;

	}



retry:

	if (vm) {

		err = xe_vm_lock(vm, true);

		if (err)

			goto out_vm;
@@ -2357,6 +2362,8 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data, 


	if (IS_ERR(bo)) {

		err = PTR_ERR(bo);

		if (xe_vm_validate_should_retry(NULL, err, &end))

			goto retry;

		goto out_vm;

	}