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perf tools: Do not put a variable sized type not at the end of a struct 

As this is a GNU extension and while harmless in this case, we can do
the same thing in a more clearer way by using an existing thread_map
constructor.

With this we avoid this while compiling with clang:

  util/parse-events.c:2024:21: error: field 'map' with variable sized type 'struct thread_map' not at the end of a struct or class is a GNU extension
        [-Werror,-Wgnu-variable-sized-type-not-at-end]
                  struct thread_map map;
                                  ^
  1 error generated.

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-tqocbplnyyhpst6drgm2u4m3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-02-14 10:59:04 -03:00
parent 9d6aae7254
commit 89896051f8
1 changed files with 6 additions and 9 deletions
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15
tools/perf/util/parse-events.c
View File

@ -2020,17 +2020,14 @@ static bool is_event_supported(u8 type, unsigned config)
.config = config,
.disabled = 1,
};
struct {
struct thread_map map;
int threads[1];
} tmap = {
.map.nr = 1,
.threads = { 0 },
};
struct thread_map *tmap = thread_map__new_by_tid(0);
if (tmap == NULL)
return false;
evsel = perf_evsel__new(&attr);
if (evsel) {
open_return = perf_evsel__open(evsel, NULL, &tmap.map);
open_return = perf_evsel__open(evsel, NULL, tmap);
ret = open_return >= 0;
if (open_return == -EACCES) {
@ -2042,7 +2039,7 @@ static bool is_event_supported(u8 type, unsigned config)
*
*/
evsel->attr.exclude_kernel = 1;
ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
ret = perf_evsel__open(evsel, NULL, tmap) >= 0;
}
perf_evsel__delete(evsel);
}