[tip:perfcounters/core] perf report: add --dump-raw-trace option

tip-bot for Ingo Molnar
2009-05-26T17:55:27Z

Commit-ID: 97b07b699b11d4bd1218a841e5dfed16bd53de06
Gitweb: http://git.kernel.org/tip/97b07b699b11d4bd1218a841e5dfed16bd53de06
Author: Ingo Molnar <mingo@elte.hu>
AuthorDate: Tue, 26 May 2009 18:48:58 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 26 May 2009 18:48:58 +0200

perf report: add --dump-raw-trace option

To help the inspection of various data files, implement an ASCII dump
method that just dumps the records as they are read in - then we exit.

[ Impact: new feature ]

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

---
Documentation/perf_counter/builtin-report.c | 39 ++++++++++++++++++++++++++-
1 files changed, 38 insertions(+), 1 deletions(-)

diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index e178190..8ea8aaa 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -20,6 +20,8 @@ static char const *input_name = "output.perf";
static int input;
static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;

+static int dump_trace = 0;
+
static unsigned long page_size;
static unsigned long mmap_window = 32;

@@ -643,7 +645,7 @@ static int __cmd_report(void)
char *buf;
event_t *event;
int ret, rc = EXIT_FAILURE;
- unsigned long total = 0;
+ unsigned long total = 0, total_mmap = 0, total_comm = 0;

input = open(input_name, O_RDONLY);
if (input < 0) {
@@ -706,6 +708,13 @@ more:
struct thread *thread = threads__findnew(event->ip.pid);
uint64_t ip = event->ip.ip;

+ if (dump_trace) {
+ fprintf(stderr, "PERF_EVENT (IP, %d): %d: %p\n",
+ event->header.misc,
+ event->ip.pid,
+ (void *)event->ip.ip);
+ }
+
if (thread == NULL) {
fprintf(stderr, "problem processing %d event, bailing out\n",
event->header.type);
@@ -743,23 +752,40 @@ more:
struct thread *thread = threads__findnew(event->mmap.pid);
struct map *map = map__new(&event->mmap);

+ if (dump_trace) {
+ fprintf(stderr, "PERF_EVENT_MMAP: [%p(%p) @ %p]: %s\n",
+ (void *)event->mmap.start,
+ (void *)event->mmap.len,
+ (void *)event->mmap.pgoff,
+ event->mmap.filename);
+ }
if (thread == NULL || map == NULL) {
fprintf(stderr, "problem processing PERF_EVENT_MMAP, bailing out\n");
goto done;
}
thread__insert_map(thread, map);
+ total_mmap++;
break;
}
case PERF_EVENT_COMM: {
struct thread *thread = threads__findnew(event->comm.pid);

+ if (dump_trace) {
+ fprintf(stderr, "PERF_EVENT_COMM: %s:%d\n",
+ event->comm.comm, event->comm.pid);
+ }
if (thread == NULL ||
thread__set_comm(thread, event->comm.comm)) {
fprintf(stderr, "problem processing PERF_EVENT_COMM, bailing out\n");
goto done;
}
+ total_comm++;
break;
}
+ default: {
+ fprintf(stderr, "skipping unknown header type: %d\n",
+ event->header.type);
+ }
}

if (offset + head < stat.st_size)
@@ -768,6 +794,15 @@ more:
rc = EXIT_SUCCESS;
done:
close(input);
+
+ if (dump_trace) {
+ fprintf(stderr, " IP events: %10ld\n", total);
+ fprintf(stderr, " mmap events: %10ld\n", total_mmap);
+ fprintf(stderr, " comm events: %10ld\n", total_comm);
+
+ return 0;
+ }
+
//dsos__fprintf(stdout);
threads__fprintf(stdout);
#if 0
@@ -796,6 +831,8 @@ static const char * const report_usage[] = {
static const struct option options[] = {
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
+ OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+ "dump raw trace in ASCII"),
OPT_END()
};