The -q/--quiet option is to suppress any message. Sometimes users just want to run the command and it can be used for that case.
Suggested-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> --- tools/perf/Documentation/perf-top.txt | 4 ++++ tools/perf/builtin-top.c | 6 +++++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index e71d63843f45..eda5b58b1cd4 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -109,6 +109,10 @@ Default is to monitor all CPUS. --verbose:: Be more verbose (show counter open errors, etc). +-q:: +--quiet:: + Do not show any message. (Suppress -v) + -z:: --zero:: Zero history across display updates. diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index ab9077915763..18b68c8495d6 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -372,7 +372,7 @@ static void perf_top__prompt_symbol(struct perf_top *top, const char *msg) } if (!found) { - fprintf(stderr, "Sorry, %s is not active.\n", buf); + pr_err("Sorry, %s is not active.\n", buf); sleep(1); } else perf_top__parse_source(top, found); @@ -1142,6 +1142,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"), OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"), + OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"), OPT_STRING('s', "sort", &sort_order, "key[,key2...]", "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..." " Please refer the man page for the complete list."), @@ -1224,6 +1225,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) if (argc) usage_with_options(top_usage, options); + if (quiet) + perf_quiet_option(); + if (!top.evlist->nr_entries && perf_evlist__add_default(top.evlist) < 0) { pr_err("Not enough memory for event selector list\n"); -- 2.11.0
