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| author | David Rientjes <rientjes@google.com> | 2017-06-06 23:36:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-22 15:27:35 +0300 |
| commit | 94cc698fdaa7250c117343b34432ea6431b3856b (patch) | |
| tree | b9388859a9269fda5e72548f80d2e6b23af7e388 /include | |
| parent | dc9e795b080bab8f3268d585f406922e07f4be46 (diff) | |
| download | linux-94cc698fdaa7250c117343b34432ea6431b3856b.tar.xz | |
compiler, clang: suppress warning for unused static inline functions
commit abb2ea7dfd82451d85ce669b811310c05ab5ca46 upstream.
GCC explicitly does not warn for unused static inline functions for
-Wunused-function. The manual states:
Warn whenever a static function is declared but not defined or
a non-inline static function is unused.
Clang does warn for static inline functions that are unused.
It turns out that suppressing the warnings avoids potentially complex
#ifdef directives, which also reduces LOC.
Suppress the warning for clang.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/compiler-clang.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index 01225b0059b1..5ce62d3e69b5 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -16,6 +16,13 @@ */ #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) +/* + * GCC does not warn about unused static inline functions for + * -Wunused-function. This turns out to avoid the need for complex #ifdef + * directives. Suppress the warning in clang as well. + */ +#define inline inline __attribute__((unused)) + /* Clang doesn't have a way to turn it off per-function, yet. */ #ifdef __noretpoline #undef __noretpoline |