| Message ID | 20231026073828.702105-1-wuqiang.matt@bytedance.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | [1/3] locking/atomic: arc: use generic_cmpxchg[64]_local for arch_cmpxchg[64]_local | expand |
diff --git a/arch/arc/include/asm/cmpxchg.h b/arch/arc/include/asm/cmpxchg.h index e138fde067de..ef644cdbe956 100644 --- a/arch/arc/include/asm/cmpxchg.h +++ b/arch/arc/include/asm/cmpxchg.h @@ -140,4 +140,18 @@ #endif +/* + * always make arch_cmpxchg[64]_local available. __generic_cmpxchg[64]_local + * are atomic with respect to current cpu. + */ +#include <asm-generic/cmpxchg-local.h> + +#define arch_cmpxchg_local(ptr, o, n) ({ \ + (__typeof__(*ptr))__generic_cmpxchg_local((ptr), \ + (unsigned long)(o), \ + (unsigned long)(n), \ + sizeof(*(ptr))); \ +}) +#define arch_cmpxchg64_local(ptr, o, n) __generic_cmpxchg64_local((ptr), (o), (n)) + #endif
arch_cmpxchg[64]_local() are not defined for arc architecture. This patch implement them with generci_cmpxchg[64]_local, advised by Masami Hiramatsu. Closes: https://lore.kernel.org/linux-trace-kernel/169824660459.24340.14614817132696360531.stgit@devnote2 Closes: https://lore.kernel.org/oe-kbuild-all/202310241310.Ir5uukOG-lkp@intel.com/ Signed-off-by: wuqiang.matt <wuqiang.matt@bytedance.com> --- arch/arc/include/asm/cmpxchg.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)