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perf tools: Librarize sample type and attr finding from headers

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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>
This commit is contained in:
Frederic Weisbecker 2009-08-16 20:56:37 +02:00 committed by Ingo Molnar
parent 0f25bfc8d8
commit 0d3a5c8859
3 changed files with 45 additions and 38 deletions
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44
tools/perf/builtin-report.c
View File

@ -70,6 +70,8 @@ static int cwdlen;
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 @@ static void trace_event(event_t *event)
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 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
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 @@ static int __cmd_report(void)
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) {

35
tools/perf/util/header.c
View File

@ -243,3 +243,38 @@ struct perf_header *perf_header__read(int fd)
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;
}

4
tools/perf/util/header.h
View File

@ -31,6 +31,10 @@ struct perf_header_attr *
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);