From: Arnaldo Carvalho de Melo <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/Documentation/perf-trace.txt | 4 ++++
tools/perf/builtin-trace.c | 12 ++++++++----
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/tools/perf/Documentation/perf-trace.txt
b/tools/perf/Documentation/perf-trace.txt
index 4754f11..fe19811 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -49,6 +49,10 @@ OPTIONS
--uid=::
Record events in threads owned by uid. Name or number.
+-v::
+--verbose=::
+ Verbosity level.
+
-i::
--no-inherit::
Child tasks do not inherit counters.
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 6ab7a7a..c907e7e 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1,6 +1,7 @@
#include <traceevent/event-parse.h>
#include "builtin.h"
#include "util/color.h"
+#include "util/debug.h"
#include "util/evlist.h"
#include "util/machine.h"
#include "util/thread.h"
@@ -311,10 +312,12 @@ static struct syscall *trace__syscall_info(struct trace
*trace,
return &trace->syscalls.table[id];
out_cant_read:
- fprintf(trace->output, "Problems reading syscall %d", id);
- if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
- fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
- fputs(" information", trace->output);
+ if (verbose) {
+ fprintf(trace->output, "Problems reading syscall %d", id);
+ if (id <= trace->syscalls.max && trace->syscalls.table[id].name
!= NULL)
+ fprintf(trace->output, "(%s)",
trace->syscalls.table[id].name);
+ fputs(" information\n", trace->output);
+ }
return NULL;
}
@@ -714,6 +717,7 @@ int cmd_trace(int argc, const char **argv, const char
*prefix __maybe_unused)
"show only events with duration > N.M ms",
trace__set_duration),
OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
+ OPT_INCR('v', "verbose", &verbose, "be more verbose"),
OPT_END()
};
int err;
--
1.8.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
