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| author | Mark Brown <broonie@kernel.org> | 2019-01-29 12:04:54 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-01-29 12:04:54 +0000 |
| commit | d7c26e63cf78fef01d66ae848184c6ee5f4b8bbf (patch) | |
| tree | 3765745a38a7ae1a4a3a056dfc6c736e4c99271d /include/linux/compiler.h | |
| parent | a8233b6c1972e1959cf84a021aeb61ddcd23cc26 (diff) | |
| parent | f17b5f06cb92ef2250513a1e154c47b78df07d40 (diff) | |
Merge tag 'v5.0-rc4' into asoc-5.1
Linux 5.0-rc4
Diffstat (limited to 'include/linux/compiler.h')
| -rw-r--r-- | include/linux/compiler.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index fc5004a4b07d..445348facea9 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -161,7 +161,9 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, #endif #ifndef OPTIMIZER_HIDE_VAR -#define OPTIMIZER_HIDE_VAR(var) barrier() +/* Make the optimizer believe the variable can be manipulated arbitrarily. */ +#define OPTIMIZER_HIDE_VAR(var) \ + __asm__ ("" : "=r" (var) : "0" (var)) #endif /* Not-quite-unique ID. */ |