perf tools: Make quiet mode consistent between tools

Use the global quiet variable everywhere so that all tools hide warnings
in quiet mode and update the documentation to reflect this.

'perf probe' claimed that errors are not printed in quiet mode but I
don't see this so remove it from the docs.

Signed-off-by: James Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221018094137.783081-3-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Documentation/perf-annotate.txt

@@ -41,7 +41,7 @@ OPTIONS
 
 -q::
 --quiet::
-	Do not show any message.  (Suppress -v)
+	Do not show any warnings or messages.  (Suppress -v)
 
 -n::
 --show-nr-samples::

tools/perf/Documentation/perf-diff.txt

@@ -75,7 +75,7 @@ OPTIONS
 
 -q::
 --quiet::
-	Do not show any message.  (Suppress -v)
+	Do not show any warnings or messages.  (Suppress -v)
 
 -f::
 --force::

tools/perf/Documentation/perf-lock.txt

@@ -42,7 +42,7 @@ COMMON OPTIONS
 
 -q::
 --quiet::
-	Do not show any message. (Suppress -v)
+	Do not show any warnings or messages. (Suppress -v)
 
 -D::
 --dump-raw-trace::

tools/perf/Documentation/perf-probe.txt

@@ -57,7 +57,7 @@ OPTIONS
 
 -q::
 --quiet::
-	Be quiet (do not show any messages including errors).
+	Do not show any warnings or messages.
 	Can not use with -v.
 
 -a::

tools/perf/Documentation/perf-record.txt

@@ -282,7 +282,7 @@ OPTIONS
 
 -q::
 --quiet::
-	Don't print any message, useful for scripting.
+	Don't print any warnings or messages, useful for scripting.
 
 -v::
 --verbose::

tools/perf/Documentation/perf-report.txt

@@ -27,7 +27,7 @@ OPTIONS
 
 -q::
 --quiet::
-	Do not show any message.  (Suppress -v)
+	Do not show any warnings or messages.  (Suppress -v)
 
 -n::
 --show-nr-samples::

tools/perf/Documentation/perf-stat.txt

@@ -354,8 +354,8 @@ forbids the event merging logic from sharing events between groups and
 may be used to increase accuracy in this case.
 
 --quiet::
-Don't print output. This is useful with perf stat record below to only
-write data to the perf.data file.
+Don't print output, warnings or messages. This is useful with perf stat
+record below to only write data to the perf.data file.
 
 STAT RECORD
 -----------

tools/perf/bench/numa.c

@@ -16,6 +16,7 @@
 #include <sched.h>
 #include <stdio.h>
 #include <assert.h>
+#include <debug.h>
 #include <malloc.h>
 #include <signal.h>
 #include <stdlib.h>
@@ -116,7 +117,6 @@ struct params {
 	long			bytes_thread;
 
 	int			nr_tasks;
-	bool			show_quiet;
 
 	bool			show_convergence;
 	bool			measure_convergence;
@@ -197,7 +197,8 @@ static const struct option options[] = {
 	OPT_BOOLEAN('c', "show_convergence", &p0.show_convergence, "show convergence details, "
 		    "convergence is reached when each process (all its threads) is running on a single NUMA node."),
 	OPT_BOOLEAN('m', "measure_convergence",	&p0.measure_convergence, "measure convergence latency"),
-	OPT_BOOLEAN('q', "quiet"	, &p0.show_quiet,	"quiet mode"),
+	OPT_BOOLEAN('q', "quiet"	, &quiet,
+		    "quiet mode (do not show any warnings or messages)"),
 	OPT_BOOLEAN('S', "serialize-startup", &p0.serialize_startup,"serialize thread startup"),
 
 	/* Special option string parsing callbacks: */
@@ -1474,7 +1475,7 @@ static int init(void)
 	/* char array in count_process_nodes(): */
 	BUG_ON(g->p.nr_nodes < 0);
 
-	if (g->p.show_quiet && !g->p.show_details)
+	if (quiet && !g->p.show_details)
 		g->p.show_details = -1;
 
 	/* Some memory should be specified: */
@@ -1553,7 +1554,7 @@ static void print_res(const char *name, double val,
 	if (!name)
 		name = "main,";
 
-	if (!g->p.show_quiet)
+	if (!quiet)
 		printf(" %-30s %15.3f, %-15s %s\n", name, val, txt_unit, txt_short);
 	else
 		printf(" %14.3f %s\n", val, txt_long);

tools/perf/builtin-annotate.c

@@ -525,7 +525,7 @@ int cmd_annotate(int argc, const char **argv)
 	OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"),
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),
-	OPT_BOOLEAN('q', "quiet", &quiet, "do now show any message"),
+	OPT_BOOLEAN('q', "quiet", &quiet, "do now show any warnings or messages"),
 	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 		    "dump raw trace in ASCII"),
 #ifdef HAVE_GTK2_SUPPORT

tools/perf/builtin-diff.c

@@ -1260,7 +1260,7 @@ static const char * const diff_usage[] = {
 static const struct option options[] = {
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),
-	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
+	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any warnings or messages"),
 	OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
 		    "Show only items with match in baseline"),
 	OPT_CALLBACK('c', "compute", &compute,

tools/perf/builtin-lock.c

@@ -1869,7 +1869,7 @@ int cmd_lock(int argc, const char **argv)
 		   "file", "vmlinux pathname"),
 	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
 		   "file", "kallsyms pathname"),
-	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
+	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any warnings or messages"),
 	OPT_END()
 	};
 

tools/perf/builtin-probe.c

@@ -40,7 +40,6 @@ static struct {
 	int command;	/* Command short_name */
 	bool list_events;
 	bool uprobes;
-	bool quiet;
 	bool target_used;
 	int nevents;
 	struct perf_probe_event events[MAX_PROBES];
@@ -514,8 +513,8 @@ __cmd_probe(int argc, const char **argv)
 	struct option options[] = {
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show parsed arguments, etc)"),
-	OPT_BOOLEAN('q', "quiet", &params.quiet,
-		    "be quiet (do not show any messages)"),
+	OPT_BOOLEAN('q', "quiet", &quiet,
+		    "be quiet (do not show any warnings or messages)"),
 	OPT_CALLBACK_DEFAULT('l', "list", NULL, "[GROUP:]EVENT",
 			     "list up probe events",
 			     opt_set_filter_with_command, DEFAULT_LIST_FILTER),
@@ -634,7 +633,7 @@ __cmd_probe(int argc, const char **argv)
 	if (ret)
 		return ret;
 
-	if (params.quiet) {
+	if (quiet) {
 		if (verbose != 0) {
 			pr_err("  Error: -v and -q are exclusive.\n");
 			return -EINVAL;

tools/perf/builtin-record.c

@@ -3388,7 +3388,7 @@ static struct option __record_options[] = {
 		     &record_parse_callchain_opt),
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show counter open errors, etc)"),
-	OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"),
+	OPT_BOOLEAN('q', "quiet", &quiet, "don't print any warnings or messages"),
 	OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat,
 		    "per thread counts"),
 	OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"),

tools/perf/builtin-report.c

@@ -1222,7 +1222,7 @@ int cmd_report(int argc, const char **argv)
 		    "input file name"),
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),
-	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
+	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any warnings or messages"),
 	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 		    "dump raw trace in ASCII"),
 	OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),

tools/perf/builtin-stat.c

@@ -1033,7 +1033,7 @@ static void print_counters(struct timespec *ts, int argc, const char **argv)
 	/* Do not print anything if we record to the pipe. */
 	if (STAT_RECORD && perf_stat.data.is_pipe)
 		return;
-	if (stat_config.quiet)
+	if (quiet)
 		return;
 
 	evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
@@ -1283,8 +1283,8 @@ static struct option stat_options[] = {
 		       "print summary for interval mode"),
 	OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary,
 		       "don't print 'summary' for CSV summary output"),
-	OPT_BOOLEAN(0, "quiet", &stat_config.quiet,
-			"don't print output (useful with record)"),
+	OPT_BOOLEAN(0, "quiet", &quiet,
+			"don't print any output, messages or warnings (useful with record)"),
 	OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
 		     "Only enable events on applying cpu with this type "
 		     "for hybrid platform (e.g. core or atom)",
@@ -2383,7 +2383,7 @@ int cmd_stat(int argc, const char **argv)
 		goto out;
 	}
 
-	if (!output && !stat_config.quiet) {
+	if (!output && !quiet) {
 		struct timespec tm;
 		mode = append_file ? "a" : "w";
 

tools/perf/util/stat.h

@@ -160,7 +160,6 @@ struct perf_stat_config {
 	bool			 metric_no_group;
 	bool			 metric_no_merge;
 	bool			 stop_read_counter;
-	bool			 quiet;
 	bool			 iostat_run;
 	char			 *user_requested_cpu_list;
 	bool			 system_wide;