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tools include: Introduce linux/bug.h, from the kernel sources

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With just what we will need in the upcoming changesets, the
BUILD_BUG_ON_ZERO() definition.

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: http://lkml.kernel.org/n/tip-lw8zg7x6ttwcvqhp90mwe3vo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-04-17 11:23:41 -03:00
parent 7909675daf
commit 379d61b1c7
2 changed files with 11 additions and 0 deletions
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10
tools/include/linux/bug.h Normal file
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@ -0,0 +1,10 @@
#ifndef _TOOLS_PERF_LINUX_BUG_H
#define _TOOLS_PERF_LINUX_BUG_H
/* Force a compilation error if condition is true, but also produce a
result (of value 0 and type size_t), so the expression can be used
e.g. in a structure initializer (or where-ever else comma expressions
aren't permitted). */
#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
#endif /* _TOOLS_PERF_LINUX_BUG_H */

1
tools/perf/MANIFEST
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@ -64,6 +64,7 @@ tools/include/linux/bitops.h
tools/include/linux/compiler.h
tools/include/linux/compiler-gcc.h
tools/include/linux/coresight-pmu.h
tools/include/linux/bug.h
tools/include/linux/filter.h
tools/include/linux/hash.h
tools/include/linux/kernel.h