| Message ID | 20220406220321.3864576-2-hauke@hauke-m.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/4] patches: Refresh on top of kernel 5.15.32 | expand |
diff --git a/backport/backport-include/linux/compiler.h b/backport/backport-include/linux/compiler.h index 51a6ec2c..820e6046 100644 --- a/backport/backport-include/linux/compiler.h +++ b/backport/backport-include/linux/compiler.h @@ -94,4 +94,8 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s #define OPTIMIZER_HIDE_VAR(var) barrier() #endif +#ifndef data_race +#define data_race(expr) (expr) +#endif + #endif /* __BACKPORT_LINUX_COMPILER_H */
This define is just a hint for the compiler that it should ignore the data race. It was added to mainline Linux kernel in commit c48981eeb0d5 ("include/linux/compiler.h: Introduce data_race(expr) macro") with kernel 5.8 to provide a hint to the compiler and the reviewer that there is an intentional data race. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> --- backport/backport-include/linux/compiler.h | 4 ++++ 1 file changed, 4 insertions(+)