diff mbox series

[07/10] locking/x86: Wire up local_try_cmpxchg

Message ID 20230305205628.27385-8-ubizjak@gmail.com (mailing list archive)
State Handled Elsewhere
Headers show
Series locking: Introduce local{,64}_try_cmpxchg | expand

Commit Message

Uros Bizjak March 5, 2023, 8:56 p.m. UTC 
Implement target specific support for local_try_cmpxchg.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
---
 arch/x86/include/asm/local.h | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h
index 349a47acaa4a..4bcc72906524 100644
--- a/arch/x86/include/asm/local.h
+++ b/arch/x86/include/asm/local.h
@@ -122,6 +122,8 @@  static inline long local_sub_return(long i, local_t *l)
 
 #define local_cmpxchg(l, o, n) \
 	(cmpxchg_local(&((l)->a.counter), (o), (n)))
+#define local_try_cmpxchg(l, po, n) \
+	(try_cmpxchg_local(&((l)->a.counter), (po), (n)))
 /* Always has a lock prefix */
 #define local_xchg(l, n) (xchg(&((l)->a.counter), (n)))