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drm/xe/sa: Add lockdep annotations for SA manager swap_guard

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Annotate the SA manager init path to model taking swap_guard while under
reclaim context. This helps lockdep catch potential circular dependencies
between fs_reclaim and swap_guard in debug builds. Without this annotation,
lockdep is unaware of this chain until the shrinker runs.

Signed-off-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260220055519.2485681-8-satyanarayana.k.v.p@intel.com
This commit is contained in:
Satyanarayana K V P
2026-02-20 05:55:23 +00:00
committed by Matthew Brost
parent bcd768d787
commit dfeef98e55
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/xe/xe_sa.c
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@@ -89,6 +89,12 @@ struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size,
if (ret)
return ERR_PTR(ret);
if (IS_ENABLED(CONFIG_PROVE_LOCKING)) {
fs_reclaim_acquire(GFP_KERNEL);
might_lock(&sa_manager->swap_guard);
fs_reclaim_release(GFP_KERNEL);
}
shadow = xe_managed_bo_create_pin_map(xe, tile, size,
XE_BO_FLAG_VRAM_IF_DGFX(tile) |
XE_BO_FLAG_GGTT |