From: Arnaldo Carvalho de Melo <a...@redhat.com> This comes from the desire of having -e/--expr to have the same meaning as for 'strace', while other perf tools use it for --event, which 'trace' honours, i.e. all perf tools have --event in common, but trace uses -e for strace's --expr.
Clarify it in the --help output. Reported-by: David Ahern <dsah...@gmail.com> Cc: Adrian Hunter <adrian.hun...@intel.com> Cc: Borislav Petkov <b...@suse.de> Cc: Don Zickus <dzic...@redhat.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/n/tip-5j94bcsdmcbeu2xthnzsj...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/Documentation/perf-trace.txt | 2 +- tools/perf/builtin-trace.c | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt index ba03fd5d1a54..1db9c8b79880 100644 --- a/tools/perf/Documentation/perf-trace.txt +++ b/tools/perf/Documentation/perf-trace.txt @@ -35,7 +35,7 @@ OPTIONS -e:: --expr:: - List of events to show, currently only syscall names. + List of syscalls to show, currently only syscall names. Prefixing with ! shows all syscalls but the ones specified. You may need to escape it. diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 23fb0818fec9..d1139b6bd534 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2660,8 +2660,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) OPT_BOOLEAN(0, "comm", &trace.show_comm, "show the thread COMM next to its id"), OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"), - OPT_STRING('e', "expr", &ev_qualifier_str, "expr", - "list of events to trace"), + OPT_STRING('e', "expr", &ev_qualifier_str, "expr", "list of syscalls to trace"), OPT_STRING('o', "output", &output_name, "file", "output file name"), OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"), OPT_STRING('p', "pid", &trace.opts.target.pid, "pid", -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
