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perf ftrace: Trace system wide if no target is given

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This align ftrace to other perf sub-commands that if no target specified
then we trace all functions.

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: http://lore.kernel.org/lkml/20200510150628.16610-2-changbin.du@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Changbin Du 2020-05-10 23:06:10 +08:00 committed by Arnaldo Carvalho de Melo
parent ffe7428e6d
commit 452b0d160a
1 changed files with 1 additions and 1 deletions
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2
tools/perf/builtin-ftrace.c
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@ -494,7 +494,7 @@ int cmd_ftrace(int argc, const char **argv)
argc = parse_options(argc, argv, ftrace_options, ftrace_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && target__none(&ftrace.target))
usage_with_options(ftrace_usage, ftrace_options);
ftrace.target.system_wide = true;
ret = target__validate(&ftrace.target);
if (ret) {