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authorDavid Rientjes <rientjes@google.com>2017-06-06 23:36:24 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-06-07 00:09:22 +0300
commitabb2ea7dfd82451d85ce669b811310c05ab5ca46 (patch)
tree3279ee25eaee0d81c6d63beccd276380b8b028c8 /include/linux/compiler-clang.h
parent84c6c3035b1de00271362a9550389c605c7d28a0 (diff)
downloadlinux-abb2ea7dfd82451d85ce669b811310c05ab5ca46.tar.xz
compiler, clang: suppress warning for unused static inline functions
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>
Diffstat (limited to 'include/linux/compiler-clang.h')
-rw-r--r--include/linux/compiler-clang.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index de179993e039..ea9126006a69 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -15,3 +15,10 @@
* with any version that can compile the kernel
*/
#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))