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authorArnaldo Carvalho de Melo <acme@redhat.com>2009-12-11 21:24:02 -0200
committerIngo Molnar <mingo@elte.hu>2009-12-12 07:42:12 +0100
commit94c744b6c0c6c5802a85ebfebbec429ac5851f2b (patch)
treee34dcaca54f1d7752ab1e7974bb73f94ff3cf94c /tools/perf/builtin-record.c
parentea08d8cbd162fe3756e3e2298efbe0b8b12f92d1 (diff)
downloadlinux-2.6.34-ux500-94c744b6c0c6c5802a85ebfebbec429ac5851f2b.tar.gz
perf tools: Introduce perf_session class
That does all the initialization boilerplate, opening the file, reading the header, checking if it is valid, etc. And that will as well have the threads list, kmap (now) global variable, etc, so that we can handle two (or more) perf.data files describing sessions to compare. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260573842-19720-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r--tools/perf/builtin-record.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 0e519c667e3..4decbd14eae 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -17,6 +17,7 @@
#include "util/header.h"
#include "util/event.h"
#include "util/debug.h"
+#include "util/session.h"
#include "util/symbol.h"
#include <unistd.h>
@@ -62,7 +63,7 @@ static int nr_cpu = 0;
static int file_new = 1;
-struct perf_header *header = NULL;
+static struct perf_session *session;
struct mmap_data {
int counter;
@@ -216,12 +217,12 @@ static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int n
{
struct perf_header_attr *h_attr;
- if (nr < header->attrs) {
- h_attr = header->attr[nr];
+ if (nr < session->header.attrs) {
+ h_attr = session->header.attr[nr];
} else {
h_attr = perf_header_attr__new(a);
if (h_attr != NULL)
- if (perf_header__add_attr(header, h_attr) < 0) {
+ if (perf_header__add_attr(&session->header, h_attr) < 0) {
perf_header_attr__delete(h_attr);
h_attr = NULL;
}
@@ -395,9 +396,9 @@ static void open_counters(int cpu, pid_t pid)
static void atexit_header(void)
{
- header->data_size += bytes_written;
+ session->header.data_size += bytes_written;
- perf_header__write(header, output, true);
+ perf_header__write(&session->header, output, true);
}
static int __cmd_record(int argc, const char **argv)
@@ -440,24 +441,24 @@ static int __cmd_record(int argc, const char **argv)
exit(-1);
}
- header = perf_header__new();
- if (header == NULL) {
+ session = perf_session__new(output_name, O_WRONLY, force);
+ if (session == NULL) {
pr_err("Not enough memory for reading perf file header\n");
return -1;
}
if (!file_new) {
- err = perf_header__read(header, output);
+ err = perf_header__read(&session->header, output);
if (err < 0)
return err;
}
if (raw_samples) {
- perf_header__set_feat(header, HEADER_TRACE_INFO);
+ perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
} else {
for (i = 0; i < nr_counters; i++) {
if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
- perf_header__set_feat(header, HEADER_TRACE_INFO);
+ perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
break;
}
}
@@ -481,7 +482,7 @@ static int __cmd_record(int argc, const char **argv)
}
if (file_new) {
- err = perf_header__write(header, output, false);
+ err = perf_header__write(&session->header, output, false);
if (err < 0)
return err;
}