perf tools: Librarize sample type and attr finding from headers
Librarize the sample type and attr fetching from perf data file
headers so that we can also use it from perf trace.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1250448997-30715-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 05d52ff..c6326de 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -70,6 +70,8 @@
static struct rb_root threads;
static struct thread *last_match;
+static struct perf_header *header;
+
static
struct callchain_param callchain_param = {
.mode = CHAIN_GRAPH_REL,
@@ -1319,29 +1321,12 @@
dump_printf(".\n");
}
-static struct perf_header *header;
-
-static struct perf_counter_attr *perf_header__find_attr(u64 id)
-{
- int i;
-
- for (i = 0; i < header->attrs; i++) {
- struct perf_header_attr *attr = header->attr[i];
- int j;
-
- for (j = 0; j < attr->ids; j++) {
- if (attr->id[j] == id)
- return &attr->attr;
- }
- }
-
- return NULL;
-}
-
static int
process_read_event(event_t *event, unsigned long offset, unsigned long head)
{
- struct perf_counter_attr *attr = perf_header__find_attr(event->read.id);
+ struct perf_counter_attr *attr;
+
+ attr = perf_header__find_attr(event->read.id, header);
if (show_threads) {
const char *name = attr ? __event_name(attr->type, attr->config)
@@ -1405,23 +1390,6 @@
return 0;
}
-static u64 perf_header__sample_type(void)
-{
- u64 type = 0;
- int i;
-
- for (i = 0; i < header->attrs; i++) {
- struct perf_header_attr *attr = header->attr[i];
-
- if (!type)
- type = attr->attr.sample_type;
- else if (type != attr->attr.sample_type)
- die("non matching sample_type");
- }
-
- return type;
-}
-
static int __cmd_report(void)
{
int ret, rc = EXIT_FAILURE;
@@ -1460,7 +1428,7 @@
header = perf_header__read(input);
head = header->data_offset;
- sample_type = perf_header__sample_type();
+ sample_type = perf_header__sample_type(header);
if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
if (sort__has_parent) {
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index b92a457..a37a222 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -243,3 +243,38 @@
return self;
}
+
+u64 perf_header__sample_type(struct perf_header *header)
+{
+ u64 type = 0;
+ int i;
+
+ for (i = 0; i < header->attrs; i++) {
+ struct perf_header_attr *attr = header->attr[i];
+
+ if (!type)
+ type = attr->attr.sample_type;
+ else if (type != attr->attr.sample_type)
+ die("non matching sample_type");
+ }
+
+ return type;
+}
+
+struct perf_counter_attr *
+perf_header__find_attr(u64 id, struct perf_header *header)
+{
+ int i;
+
+ for (i = 0; i < header->attrs; i++) {
+ struct perf_header_attr *attr = header->attr[i];
+ int j;
+
+ for (j = 0; j < attr->ids; j++) {
+ if (attr->id[j] == id)
+ return &attr->attr;
+ }
+ }
+
+ return NULL;
+}
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index bf28044..5d0a72e 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -31,6 +31,10 @@
perf_header_attr__new(struct perf_counter_attr *attr);
void perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
+u64 perf_header__sample_type(struct perf_header *header);
+struct perf_counter_attr *
+perf_header__find_attr(u64 id, struct perf_header *header);
+
struct perf_header *perf_header__new(void);