diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/drm_exec.h | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/include/drm/drm_exec.h b/include/drm/drm_exec.h index dee6ebdbe416..18f84faabbb9 100644 --- a/include/drm/drm_exec.h +++ b/include/drm/drm_exec.h @@ -95,6 +95,17 @@ drm_exec_obj(struct drm_exec *exec, unsigned long index) #define drm_exec_for_each_locked_object_reverse(exec, obj) \ __drm_exec_for_each_locked_object_reverse(exec, obj, __UNIQUE_ID(drm_exec)) +/* + * Helper to drm_exec_until_all_locked(). Don't use directly. + * + * Since labels can't be defined local to the loop's body we use a jump pointer + * to make sure that the retry is only used from within the loop's body. + */ +#define __drm_exec_until_all_locked(exec, _label) \ +_label: \ + for (void *const __maybe_unused __drm_exec_retry_ptr = &&_label; \ + drm_exec_cleanup(exec);) + /** * drm_exec_until_all_locked - loop until all GEM objects are locked * @exec: drm_exec object @@ -102,17 +113,9 @@ drm_exec_obj(struct drm_exec *exec, unsigned long index) * Core functionality of the drm_exec object. Loops until all GEM objects are * locked and no more contention exists. At the beginning of the loop it is * guaranteed that no GEM object is locked. - * - * Since labels can't be defined local to the loops body we use a jump pointer - * to make sure that the retry is only used from within the loops body. */ #define drm_exec_until_all_locked(exec) \ -__PASTE(__drm_exec_, __LINE__): \ - for (void *__drm_exec_retry_ptr; ({ \ - __drm_exec_retry_ptr = &&__PASTE(__drm_exec_, __LINE__);\ - (void)__drm_exec_retry_ptr; \ - drm_exec_cleanup(exec); \ - });) + __drm_exec_until_all_locked(exec, __UNIQUE_ID(drm_exec)) /** * drm_exec_retry_on_contention - restart the loop to grap all locks |