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authorJiri Olsa <jolsa@kernel.org>2014-10-26 23:44:04 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-11-06 21:42:47 +0100
commitcdae2d1e936457bf72673cb77e7f5f4b9d4c451e (patch)
tree9d780648f08d0f385bb63480b0b0d030f72fca4a /tools
parentperf tools: Add test_and_set_bit function (diff)
downloadlinux-cdae2d1e936457bf72673cb77e7f5f4b9d4c451e.tar.xz
linux-cdae2d1e936457bf72673cb77e7f5f4b9d4c451e.zip
perf script perl: Removing event cache as it's no longer needed
We don't need to maintain cache of 'struct event_format' objects. Currently the 'struct perf_evsel' holds this reference already. Adding events_defined bitmap to keep track of defined events, which is much cheaper than array of pointers. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1414363445-22370-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/scripting-engines/trace-event-perl.c29
1 files changed, 6 insertions, 23 deletions
diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c
index 0a01bac4ce02..22ebc46226e7 100644
--- a/tools/perf/util/scripting-engines/trace-event-perl.c
+++ b/tools/perf/util/scripting-engines/trace-event-perl.c
@@ -24,6 +24,7 @@
#include <string.h>
#include <ctype.h>
#include <errno.h>
+#include <linux/bitmap.h>
#include "../util.h"
#include <EXTERN.h>
@@ -57,7 +58,7 @@ INTERP my_perl;
#define FTRACE_MAX_EVENT \
((1 << (sizeof(unsigned short) * 8)) - 1)
-struct event_format *events[FTRACE_MAX_EVENT];
+static DECLARE_BITMAP(events_defined, FTRACE_MAX_EVENT);
extern struct scripting_context *scripting_context;
@@ -238,35 +239,15 @@ static void define_event_symbols(struct event_format *event,
define_event_symbols(event, ev_name, args->next);
}
-static inline struct event_format *find_cache_event(struct perf_evsel *evsel)
-{
- static char ev_name[256];
- struct event_format *event;
- int type = evsel->attr.config;
-
- if (events[type])
- return events[type];
-
- events[type] = event = evsel->tp_format;
- if (!event)
- return NULL;
-
- sprintf(ev_name, "%s::%s", event->system, event->name);
-
- define_event_symbols(event, ev_name, event->print_fmt.args);
-
- return event;
-}
-
static void perl_process_tracepoint(struct perf_sample *sample,
struct perf_evsel *evsel,
struct thread *thread)
{
+ struct event_format *event = evsel->tp_format;
struct format_field *field;
static char handler[256];
unsigned long long val;
unsigned long s, ns;
- struct event_format *event;
int pid;
int cpu = sample->cpu;
void *data = sample->raw_data;
@@ -278,7 +259,6 @@ static void perl_process_tracepoint(struct perf_sample *sample,
if (evsel->attr.type != PERF_TYPE_TRACEPOINT)
return;
- event = find_cache_event(evsel);
if (!event)
die("ug! no event found for type %" PRIu64, (u64)evsel->attr.config);
@@ -286,6 +266,9 @@ static void perl_process_tracepoint(struct perf_sample *sample,
sprintf(handler, "%s::%s", event->system, event->name);
+ if (!test_and_set_bit(event->id, events_defined))
+ define_event_symbols(event, handler, event->print_fmt.args);
+
s = nsecs / NSECS_PER_SEC;
ns = nsecs - s * NSECS_PER_SEC;