On Wed, 2026-01-07 at 12:57 -0800, Matthew Brost wrote:

Page accounting can change via the shrinker without calling xe_ttm_tt_unpopulate(), which normally updates page count tracepoints through update_global_total_pages. Add a call to update_global_total_pages when the shrinker successfully shrinks a BO.

v2:  - Don't adjust global accounting when pinning (Stuart)

Cc: stable@vger.kernel.org Fixes: ce3d39fae3d3 ("drm/xe/bo: add GPU memory trace points") Signed-off-by: Matthew Brost matthew.brost@intel.com

Reviewed-by: Stuart Summers stuart.summers@intel.com

---

drivers/gpu/drm/xe/xe_bo.c | 9 +++++++--  1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c index 8b6474cd3eaf..6ab52fa397e3 100644 --- a/drivers/gpu/drm/xe/xe_bo.c +++ b/drivers/gpu/drm/xe/xe_bo.c @@ -1054,6 +1054,7 @@ static long xe_bo_shrink_purge(struct ttm_operation_ctx *ctx,                                unsigned long *scanned)  {         struct xe_device *xe = ttm_to_xe_device(bo->bdev); +       struct ttm_tt *tt = bo->ttm;         long lret;           /* Fake move to system, without copying data. */ @@ -1078,8 +1079,10 @@ static long xe_bo_shrink_purge(struct ttm_operation_ctx *ctx,                               .writeback = false,                               .allow_move = false});   -       if (lret > 0) +       if (lret > 0) {                 xe_ttm_tt_account_subtract(xe, bo->ttm); +               update_global_total_pages(bo->bdev, -(long)tt-

...

num_pages);

+       }           return lret;  } @@ -1165,8 +1168,10 @@ long xe_bo_shrink(struct ttm_operation_ctx *ctx, struct ttm_buffer_object *bo,         if (needs_rpm)                 xe_pm_runtime_put(xe);   -       if (lret > 0) +       if (lret > 0) {                 xe_ttm_tt_account_subtract(xe, tt); +               update_global_total_pages(bo->bdev, -(long)tt-

...

num_pages);

+       }    out_unref:         xe_bo_put(xe_bo);