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authorLi Zefan <lizf@cn.fujitsu.com>2009-10-15 11:22:07 +0800
committerIngo Molnar <mingo@elte.hu>2009-10-15 11:35:23 +0200
commitc171b552a7d316c7e1c3ad6f70a30178dd53e14c (patch)
tree99755963367839f3232565acd0ff1680037126fa /tools/perf/builtin-record.c
parent6fb2915df7f0747d9044da9dbff5b46dc2e20830 (diff)
downloadlinux-2.6.34-ux500-c171b552a7d316c7e1c3ad6f70a30178dd53e14c.tar.gz
perf trace: Add filter Suppport
Add a new option "--filter <filter_str>" to perf record, and it should be right after "-e trace_point": #./perf record -R -f -e irq:irq_handler_entry --filter irq==18 ^C # ./perf trace perf-4303 ... irq_handler_entry: irq=18 handler=eth0 init-0 ... irq_handler_entry: irq=18 handler=eth0 init-0 ... irq_handler_entry: irq=18 handler=eth0 init-0 ... irq_handler_entry: irq=18 handler=eth0 init-0 ... irq_handler_entry: irq=18 handler=eth0 See Documentation/trace/events.txt for the syntax of filter expressions. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <4AD6955F.90602@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r--tools/perf/builtin-record.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4e3a374e7aa..8b2c860c49a 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -374,9 +374,11 @@ static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int n
static void create_counter(int counter, int cpu, pid_t pid)
{
+ char *filter = filters[counter];
struct perf_event_attr *attr = attrs + counter;
struct perf_header_attr *h_attr;
int track = !counter; /* only the first counter needs these */
+ int ret;
struct {
u64 count;
u64 time_enabled;
@@ -479,7 +481,6 @@ try_again:
multiplex_fd = fd[nr_cpu][counter];
if (multiplex && fd[nr_cpu][counter] != multiplex_fd) {
- int ret;
ret = ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_SET_OUTPUT, multiplex_fd);
assert(ret != -1);
@@ -499,6 +500,16 @@ try_again:
}
}
+ if (filter != NULL) {
+ ret = ioctl(fd[nr_cpu][counter],
+ PERF_EVENT_IOC_SET_FILTER, filter);
+ if (ret) {
+ error("failed to set filter with %d (%s)\n", errno,
+ strerror(errno));
+ exit(-1);
+ }
+ }
+
ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_ENABLE);
}
@@ -676,6 +687,8 @@ static const struct option options[] = {
OPT_CALLBACK('e', "event", NULL, "event",
"event selector. use 'perf list' to list available events",
parse_events),
+ OPT_CALLBACK(0, "filter", NULL, "filter",
+ "event filter", parse_filter),
OPT_INTEGER('p', "pid", &target_pid,
"record events on existing pid"),
OPT_INTEGER('r', "realtime", &realtime_prio,