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drm/xe/ufence: Warn if mmget_not_zero() fails

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This shouldn't happen but seen this while debugging ufence timeout
issue time to time so log it to isolate this particular case.

v2: s/XE_WARN_ON/drm_dbg(Maarten)

Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1630
Cc: Francois Dugast <francois.dugast@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241016082304.66009-3-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
This commit is contained in:
Nirmoy Das 2024-10-16 10:23:04 +02:00
parent 9408c45084
commit 66426bf9e2
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/xe/xe_sync.c
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@ -83,6 +83,8 @@ static void user_fence_worker(struct work_struct *w)
XE_WARN_ON("Copy to user failed");
kthread_unuse_mm(ufence->mm);
mmput(ufence->mm);
} else {
drm_dbg(&ufence->xe->drm, "mmget_not_zero() failed, ufence wasn't signaled\n");
}
wake_up_all(&ufence->xe->ufence_wq);