| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 5 Dec 2011 04:46:14 -0800
From: tip-bot for Arnaldo Carvalho de Melo <acme@...hat.com>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, eranian@...gle.com, paulus@...ba.org,
acme@...hat.com, hpa@...or.com, mingo@...hat.com,
peterz@...radead.org, efault@....de, fweisbec@...il.com,
dsahern@...il.com, tglx@...utronix.de
Subject: [tip:perf/core] perf evlist: Introduce add_tracepoints method
Commit-ID: a8c9ae18d810e1ae12b6ec960907e9af63171d3a
Gitweb: http://git.kernel.org/tip/a8c9ae18d810e1ae12b6ec960907e9af63171d3a
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Sat, 5 Nov 2011 08:41:51 -0200
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 28 Nov 2011 10:25:11 -0200
perf evlist: Introduce add_tracepoints method
Convenient way of asking for tracepoint events to be added to an
existing evlist.
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-0ylj4wrg54791u0baqb9swbb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/util/evlist.c | 57 +++++++++++++++++++++++++++++++++++++++++++++-
tools/perf/util/evlist.h | 5 ++++
tools/perf/util/setup.py | 3 +-
3 files changed, 63 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 58aa1e0..3bc5a28 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -6,12 +6,13 @@
*
* Released under the GPL v2. (and only v2, not any later version)
*/
+#include "util.h"
+#include "debugfs.h"
#include <poll.h>
#include "cpumap.h"
#include "thread_map.h"
#include "evlist.h"
#include "evsel.h"
-#include "util.h"
#include "parse-events.h"
@@ -134,6 +135,60 @@ out_delete_partial_list:
return -1;
}
+static int trace_event__id(const char *evname)
+{
+ char *filename, *colon;
+ int err = -1, fd;
+
+ if (asprintf(&filename, "%s/%s/id", tracing_events_path, evname) < 0)
+ return -1;
+
+ colon = strrchr(filename, ':');
+ if (colon != NULL)
+ *colon = '/';
+
+ fd = open(filename, O_RDONLY);
+ if (fd >= 0) {
+ char id[16];
+ if (read(fd, id, sizeof(id)) > 0)
+ err = atoi(id);
+ close(fd);
+ }
+
+ free(filename);
+ return err;
+}
+
+int perf_evlist__add_tracepoints(struct perf_evlist *evlist,
+ const char *tracepoints[],
+ size_t nr_tracepoints)
+{
+ int err;
+ size_t i;
+ struct perf_event_attr *attrs = zalloc(nr_tracepoints * sizeof(*attrs));
+
+ if (attrs == NULL)
+ return -1;
+
+ for (i = 0; i < nr_tracepoints; i++) {
+ err = trace_event__id(tracepoints[i]);
+
+ if (err < 0)
+ goto out_free_attrs;
+
+ attrs[i].type = PERF_TYPE_TRACEPOINT;
+ attrs[i].config = err;
+ attrs[i].sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
+ PERF_SAMPLE_CPU);
+ attrs[i].sample_period = 1;
+ }
+
+ err = perf_evlist__add_attrs(evlist, attrs, nr_tracepoints);
+out_free_attrs:
+ free(attrs);
+ return err;
+}
+
void perf_evlist__disable(struct perf_evlist *evlist)
{
int cpu, thread;
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 57d91ff..ec71c82 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -43,10 +43,15 @@ void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
int perf_evlist__add_default(struct perf_evlist *evlist);
int perf_evlist__add_attrs(struct perf_evlist *evlist,
struct perf_event_attr *attrs, size_t nr_attrs);
+int perf_evlist__add_tracepoints(struct perf_evlist *evlist,
+ const char *tracepoints[], size_t nr_tracepoints);
#define perf_evlist__add_attrs_array(evlist, array) \
perf_evlist__add_attrs(evlist, array, ARRAY_SIZE(array))
+#define perf_evlist__add_tracepoints_array(evlist, array) \
+ perf_evlist__add_tracepoints(evlist, array, ARRAY_SIZE(array))
+
void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
int cpu, int thread, u64 id);
diff --git a/tools/perf/util/setup.py b/tools/perf/util/setup.py
index 95d3700..36d4c56 100644
--- a/tools/perf/util/setup.py
+++ b/tools/perf/util/setup.py
@@ -27,7 +27,8 @@ build_tmp = getenv('PYTHON_EXTBUILD_TMP')
perf = Extension('perf',
sources = ['util/python.c', 'util/ctype.c', 'util/evlist.c',
'util/evsel.c', 'util/cpumap.c', 'util/thread_map.c',
- 'util/util.c', 'util/xyarray.c', 'util/cgroup.c'],
+ 'util/util.c', 'util/xyarray.c', 'util/cgroup.c',
+ 'util/debugfs.c'],
include_dirs = ['util/include'],
extra_compile_args = cflags,
)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists