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perf top: Use __fallthrough

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The implicit fall through case label here is intended, so let us inform
that to gcc >= 7:

    CC       /tmp/build/perf/builtin-top.o
  builtin-top.c: In function 'display_thread':
  builtin-top.c:644:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
      if (errno == EINTR)
         ^
  builtin-top.c:647:3: note: here
     default:
   ^~~~~~~

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-lmcfnnyx9ic0m6j0aud98p4e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-02-08 17:01:46 -03:00
parent d64b721d27
commit 7b0214b702
1 changed files with 1 additions and 1 deletions
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2
tools/perf/builtin-top.c
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@ -643,7 +643,7 @@ static void *display_thread(void *arg)
case -1:
if (errno == EINTR)
continue;
/* Fall trhu */
__fallthrough;
default:
c = getc(stdin);
tcsetattr(0, TCSAFLUSH, &save);