diff options
| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-10-15 07:22:07 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-15 13:35:23 +0400 |
| commit | c171b552a7d316c7e1c3ad6f70a30178dd53e14c (patch) | |
| tree | 99755963367839f3232565acd0ff1680037126fa /tools/perf/util/parse-events.c | |
| parent | 6fb2915df7f0747d9044da9dbff5b46dc2e20830 (diff) | |
| download | linux-c171b552a7d316c7e1c3ad6f70a30178dd53e14c.tar.xz | |
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/util/parse-events.c')
| -rw-r--r-- | tools/perf/util/parse-events.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 8cfb48cbbea0..b097570e9623 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -8,9 +8,10 @@ #include "cache.h" #include "header.h" -int nr_counters; +int nr_counters; struct perf_event_attr attrs[MAX_COUNTERS]; +char *filters[MAX_COUNTERS]; struct event_symbol { u8 type; @@ -708,7 +709,6 @@ static void store_event_type(const char *orgname) perf_header__push_event(id, orgname); } - int parse_events(const struct option *opt __used, const char *str, int unset __used) { struct perf_event_attr attr; @@ -745,6 +745,28 @@ int parse_events(const struct option *opt __used, const char *str, int unset __u return 0; } +int parse_filter(const struct option *opt __used, const char *str, + int unset __used) +{ + int i = nr_counters - 1; + int len = strlen(str); + + if (i < 0 || attrs[i].type != PERF_TYPE_TRACEPOINT) { + fprintf(stderr, + "-F option should follow a -e tracepoint option\n"); + return -1; + } + + filters[i] = malloc(len + 1); + if (!filters[i]) { + fprintf(stderr, "not enough memory to hold filter string\n"); + return -1; + } + strcpy(filters[i], str); + + return 0; +} + static const char * const event_type_descriptors[] = { "", "Hardware event", |