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tools include compiler-gcc: Add __pure attribute helper

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Adopt it from the kernel sources, will be used soon.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-oubheiqj8edo5rzewt11cbn0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2018-05-17 15:12:36 -03:00
parent 789e465058
commit 6e1690c4c0
1 changed files with 3 additions and 0 deletions
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3
tools/include/linux/compiler-gcc.h
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@ -21,6 +21,9 @@
/* &a[0] degrades to a pointer: a different type from an array */
#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
#ifndef __pure
#define __pure __attribute__((pure))
#endif
#define noinline __attribute__((noinline))
#ifndef __packed
#define __packed __attribute__((packed))