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| author | Shuicheng Lin <shuicheng.lin@intel.com> | 2026-06-30 19:22:21 +0000 |
|---|---|---|
| committer | Shuicheng Lin <shuicheng.lin@intel.com> | 2026-07-08 15:49:40 -0700 |
| commit | 3359422bf0a1140e96d783a19a397686e580a3ca (patch) | |
| tree | 678915dfa45cb85c8ecaa96f8486eac4dbee6eb7 /drivers | |
| parent | c3a1c3579b1250060da73507a4acef712974c78a (diff) | |
| download | linux-next-3359422bf0a1140e96d783a19a397686e580a3ca.tar.gz linux-next-3359422bf0a1140e96d783a19a397686e580a3ca.zip | |
drm/xe/userptr: Stub notifier_lock helpers when DRM_GPUSVM=n
When CONFIG_DRM_GPUSVM=n (e.g. um-allyesconfig), the only caller of
xe_pt_svm_userptr_notifier_lock() is compiled out, triggering:
drivers/gpu/drm/xe/xe_pt.c:1418:13: warning:
'xe_pt_svm_userptr_notifier_lock' defined but not used
[-Wunused-function]
The helpers cannot simply be removed in this case: the matching
xe_pt_svm_userptr_notifier_unlock() is also referenced from
xe_pt_update_ops_run(), which lives outside any DRM_GPUSVM ifdef and is
gated only at runtime by pt_update_ops->needs_svm_lock. The symbol must
exist in all builds.
Provide empty static inline stubs for !DRM_GPUSVM, matching the pattern
used by xe_svm_notifier_lock()/_unlock() in xe_svm.h.
Fixes: 80ccbd97ffee ("drm/xe/userptr: Hold notifier_lock for write on inject test path")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202606302210.QqcLbOEN-lkp@intel.com/
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260630192221.2998168-1-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pt.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c index 5fdad444009f..e466f714bf86 100644 --- a/drivers/gpu/drm/xe/xe_pt.c +++ b/drivers/gpu/drm/xe/xe_pt.c @@ -1418,6 +1418,7 @@ static int xe_pt_pre_commit(struct xe_migrate_pt_update *pt_update) pt_update_ops, rftree); } +#if IS_ENABLED(CONFIG_DRM_GPUSVM) /* * Acquire/release the svm notifier_lock around xe_pt_svm_userptr_pre_commit() * and the matching late release in xe_pt_update_ops_run(). Read mode by @@ -1444,6 +1445,10 @@ static void xe_pt_svm_userptr_notifier_unlock(struct xe_vm *vm) xe_svm_notifier_unlock(vm); #endif } +#else +static inline void xe_pt_svm_userptr_notifier_lock(struct xe_vm *vm) { } +static inline void xe_pt_svm_userptr_notifier_unlock(struct xe_vm *vm) { } +#endif #if IS_ENABLED(CONFIG_DRM_GPUSVM) #ifdef CONFIG_DRM_XE_USERPTR_INVAL_INJECT |