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authorIngo Molnar <mingo@kernel.org>2024-04-03 10:13:09 +0300
committerIngo Molnar <mingo@kernel.org>2024-04-03 10:13:09 +0300
commit9b4e528557944dff694c8afa5a8912de81503bf2 (patch)
tree7d4ff38fbf55e1d32e3384cac0ae2fc80d4ae179 /include/linux/sync_core.h
parentdfbc411e0a5ea72fdd563b2c7d627e9d993d865c (diff)
parent39cd87c4eb2b893354f3b850f916353f2658ae6f (diff)
downloadlinux-9b4e528557944dff694c8afa5a8912de81503bf2.tar.xz
Merge tag 'v6.9-rc2' into perf/core, to pick up dependent commits
Pick up fixes that followup patches are going to depend on. Signed-off-by: Ingo Molnar <mingo@kernel.org>
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 */