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authorArnaldo Carvalho de Melo <acme@redhat.com>2017-04-17 11:23:41 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-04-19 13:01:42 -0300
commit379d61b1c7d42512cded04d372f15a7e725db9e1 (patch)
treec73b3eed9cccd2ae29075f848b7a274606bc5b46 /tools/include
parent7909675daf55e8222b40e5e162bbc9d633bd5bac (diff)
downloadlinux-379d61b1c7d42512cded04d372f15a7e725db9e1.tar.bz2
tools include: Introduce linux/bug.h, from the kernel sources
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>
Diffstat (limited to 'tools/include')
-rw-r--r--tools/include/linux/bug.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/include/linux/bug.h b/tools/include/linux/bug.h
new file mode 100644
index 000000000000..8e4a4f49135d
--- /dev/null
+++ b/tools/include/linux/bug.h
@@ -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 */