drm/xe: Implement cgroup for vram

Add vram based cgroup eviction to Xe.
Most hardware with VRAM uses TTM for its management, and can be
similarly trivially enabled.

Co-developed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20241204134410.1161769-5-dev@lankhorst.se
Signed-off-by: Maxime Ripard <mripard@kernel.org>

diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
index 423b261ea7430533ba3986df29fba3c7d54dc6f0..08d69bd4493015b0602e4030236f2cfdf51b6a71 100644 (file)
--- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
+++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
@@ -5,6 +5,7 @@
  */
 
 #include <drm/drm_managed.h>
+#include <drm/drm_drv.h>
 
 #include <drm/ttm/ttm_placement.h>
 #include <drm/ttm/ttm_range_manager.h>
@@ -339,6 +340,13 @@ int __xe_ttm_vram_mgr_init(struct xe_device *xe, struct xe_ttm_vram_mgr *mgr,
        struct ttm_resource_manager *man = &mgr->manager;
        int err;
 
+       if (mem_type != XE_PL_STOLEN) {
+               const char *name = mem_type == XE_PL_VRAM0 ? "vram0" : "vram1";
+               man->cg = drmm_cgroup_register_region(&xe->drm, name, size);
+               if (IS_ERR(man->cg))
+                       return PTR_ERR(man->cg);
+       }
+
        man->func = &xe_ttm_vram_mgr_func;
        mgr->mem_type = mem_type;
        mutex_init(&mgr->lock);