perf trace: Add --verbose option
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ain6q4u8g3bpnh18yhw24v2x@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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 @@
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 @@
"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;