Commit-ID: ccd62a896ffe3dbd60f3b7570a2b74e4fe030ed6
Gitweb: http://git.kernel.org/tip/ccd62a896ffe3dbd60f3b7570a2b74e4fe030ed6
Author: Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Sat, 16 Apr 2016 09:36:32 -0300
Committer: Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Sat, 16 Apr 2016 09:44:28 -0300
perf trace: Fix build when DWARF unwind isn't available
The variable is initialized and then conditionally set to a different
value, but not used when DWARF unwinding is not available, bummer, write
1000 times: "Run make -C tools/perf build-test"...
builtin-trace.c: In function ‘cmd_trace’:
builtin-trace.c:3112:6: error: variable ‘max_stack_user_set’ set but not
used [-Werror=unused-but-set-variable]
bool max_stack_user_set = true;
^
cc1: all warnings being treated as err
Fix it by marking it as __maybe_unused.
Cc: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Milian Wolff <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Fixes: 056149932602 ("perf trace: Make --(min,max}-stack imply "--call-graph
dwarf"")
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/builtin-trace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 026ec0c..0e3c1ce 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -3109,7 +3109,7 @@ int cmd_trace(int argc, const char **argv, const char
*prefix __maybe_unused)
"per thread proc mmap processing timeout in ms"),
OPT_END()
};
- bool max_stack_user_set = true;
+ bool __maybe_unused max_stack_user_set = true;
bool mmap_pages_user_set = true;
const char * const trace_subcommands[] = { "record", NULL };
int err;
