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authorIngo Molnar <[email protected]>2024-03-25 11:32:29 +0100
committerIngo Molnar <[email protected]>2024-03-25 11:32:29 +0100
commitf4566a1e73957800df75a3dd2dccee8a4697f327 (patch)
treeb043b875228c0b25988af66c680d60cae69d761d /include/linux/sync_core.h
parentb9e6e28663928cab836a19abbdec3d036a07db3b (diff)
parent4cece764965020c22cff7665b18a012006359095 (diff)
Merge tag 'v6.9-rc1' into sched/core, to pick up fixes and to refresh the branch
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'include/linux/sync_core.h')
-rw-r--r--include/linux/sync_core.h16
1 files changed, 15 insertions, 1 deletions
diff --git a/include/linux/sync_core.h b/include/linux/sync_core.h
index 013da4b8b327..67bb9794b875 100644
--- a/include/linux/sync_core.h
+++ b/include/linux/sync_core.h
@@ -17,5 +17,19 @@ static inline void sync_core_before_usermode(void)
}
#endif
-#endif /* _LINUX_SYNC_CORE_H */
+#ifdef CONFIG_ARCH_HAS_PREPARE_SYNC_CORE_CMD
+#include <asm/sync_core.h>
+#else
+/*
+ * This is a dummy prepare_sync_core_cmd() implementation that can be used on
+ * all architectures which provide unconditional core serializing instructions
+ * in switch_mm().
+ * If your architecture doesn't provide such core serializing instructions in
+ * switch_mm(), you may need to write your own functions.
+ */
+static inline void prepare_sync_core_cmd(struct mm_struct *mm)
+{
+}
+#endif
+#endif /* _LINUX_SYNC_CORE_H */