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Subject[tip:perf/core] libperf: Adopt perf_evsel__enable()/disable()/apply_filter() functions
Commit-ID:  a00571fda6091b5268d05e87d0797efe2db1920a
Gitweb: https://git.kernel.org/tip/a00571fda6091b5268d05e87d0797efe2db1920a
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Sun, 21 Jul 2019 13:24:52 +0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 29 Jul 2019 18:34:46 -0300

libperf: Adopt perf_evsel__enable()/disable()/apply_filter() functions

Move the following functions:

evsel__enable()
evsel__disable()
evsel__apply_filter()

to libperf with the following names:

perf_evsel__enable()
perf_evsel__disable()
perf_evsel__apply_filter()

Export only perf_evsel__enable()/disable(), keeping the
perf_evsel__apply_filter() one private for the moment.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-66-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/lib/evsel.c | 36 +++++++++++++++++++++++++++++++++
tools/perf/lib/include/internal/evsel.h | 1 +
tools/perf/lib/include/perf/evsel.h | 2 ++
tools/perf/lib/libperf.map | 2 ++
tools/perf/util/evlist.c | 2 +-
tools/perf/util/evsel.c | 29 ++------------------------
tools/perf/util/evsel.h | 1 -
7 files changed, 44 insertions(+), 29 deletions(-)

diff --git a/tools/perf/lib/evsel.c b/tools/perf/lib/evsel.c
index 390fcf9107c1..c3f3722e9f91 100644
--- a/tools/perf/lib/evsel.c
+++ b/tools/perf/lib/evsel.c
@@ -14,6 +14,7 @@
#include <internal/threadmap.h>
#include <internal/lib.h>
#include <linux/string.h>
+#include <sys/ioctl.h>

void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr)
{
@@ -179,3 +180,38 @@ int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,

return 0;
}
+
+static int perf_evsel__run_ioctl(struct perf_evsel *evsel,
+ int ioc, void *arg)
+{
+ int cpu, thread;
+
+ for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) {
+ for (thread = 0; thread < xyarray__max_y(evsel->fd); thread++) {
+ int fd = FD(evsel, cpu, thread),
+ err = ioctl(fd, ioc, arg);
+
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+int perf_evsel__enable(struct perf_evsel *evsel)
+{
+ return perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, 0);
+}
+
+int perf_evsel__disable(struct perf_evsel *evsel)
+{
+ return perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_DISABLE, 0);
+}
+
+int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter)
+{
+ return perf_evsel__run_ioctl(evsel,
+ PERF_EVENT_IOC_SET_FILTER,
+ (void *)filter);
+}
diff --git a/tools/perf/lib/include/internal/evsel.h b/tools/perf/lib/include/internal/evsel.h
index 89bae3720d67..8b854d1c9b45 100644
--- a/tools/perf/lib/include/internal/evsel.h
+++ b/tools/perf/lib/include/internal/evsel.h
@@ -24,5 +24,6 @@ int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
void perf_evsel__close_fd(struct perf_evsel *evsel);
void perf_evsel__free_fd(struct perf_evsel *evsel);
int perf_evsel__read_size(struct perf_evsel *evsel);
+int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);

#endif /* __LIBPERF_INTERNAL_EVSEL_H */
diff --git a/tools/perf/lib/include/perf/evsel.h b/tools/perf/lib/include/perf/evsel.h
index 16ae3f873280..0db18dfabdb8 100644
--- a/tools/perf/lib/include/perf/evsel.h
+++ b/tools/perf/lib/include/perf/evsel.h
@@ -30,5 +30,7 @@ LIBPERF_API int perf_evsel__open(struct perf_evsel *evsel, struct perf_cpu_map *
LIBPERF_API void perf_evsel__close(struct perf_evsel *evsel);
LIBPERF_API int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,
struct perf_counts_values *count);
+LIBPERF_API int perf_evsel__enable(struct perf_evsel *evsel);
+LIBPERF_API int perf_evsel__disable(struct perf_evsel *evsel);

#endif /* __LIBPERF_EVSEL_H */
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index 2e23cf420cce..5bd491ac1762 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -13,6 +13,8 @@ LIBPERF_0.0.1 {
perf_thread_map__put;
perf_evsel__new;
perf_evsel__delete;
+ perf_evsel__enable;
+ perf_evsel__disable;
perf_evsel__init;
perf_evsel__open;
perf_evsel__close;
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index c6b4883b2d49..c4489a1ad6bc 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1109,7 +1109,7 @@ int perf_evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel)
* filters only work for tracepoint event, which doesn't have cpu limit.
* So evlist and evsel should always be same.
*/
- err = evsel__apply_filter(evsel, evsel->filter);
+ err = perf_evsel__apply_filter(&evsel->core, evsel->filter);
if (err) {
*err_evsel = evsel;
break;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 0957ec24f518..64bc32ed6dfa 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1153,31 +1153,6 @@ void perf_evsel__config(struct evsel *evsel, struct record_opts *opts,
perf_evsel__reset_sample_bit(evsel, BRANCH_STACK);
}

-static int perf_evsel__run_ioctl(struct evsel *evsel,
- int ioc, void *arg)
-{
- int cpu, thread;
-
- for (cpu = 0; cpu < xyarray__max_x(evsel->core.fd); cpu++) {
- for (thread = 0; thread < xyarray__max_y(evsel->core.fd); thread++) {
- int fd = FD(evsel, cpu, thread),
- err = ioctl(fd, ioc, arg);
-
- if (err)
- return err;
- }
- }
-
- return 0;
-}
-
-int evsel__apply_filter(struct evsel *evsel, const char *filter)
-{
- return perf_evsel__run_ioctl(evsel,
- PERF_EVENT_IOC_SET_FILTER,
- (void *)filter);
-}
-
int perf_evsel__set_filter(struct evsel *evsel, const char *filter)
{
char *new_filter = strdup(filter);
@@ -1220,7 +1195,7 @@ int perf_evsel__append_addr_filter(struct evsel *evsel, const char *filter)

int evsel__enable(struct evsel *evsel)
{
- int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, 0);
+ int err = perf_evsel__enable(&evsel->core);

if (!err)
evsel->disabled = false;
@@ -1230,7 +1205,7 @@ int evsel__enable(struct evsel *evsel)

int evsel__disable(struct evsel *evsel)
{
- int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_DISABLE, 0);
+ int err = perf_evsel__disable(&evsel->core);
/*
* We mark it disabled here so that tools that disable a event can
* ignore events after they disable it. I.e. the ring buffer may have
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 57e315d8158e..0989fb2eb1ec 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -287,7 +287,6 @@ int perf_evsel__set_filter(struct evsel *evsel, const char *filter);
int perf_evsel__append_tp_filter(struct evsel *evsel, const char *filter);
int perf_evsel__append_addr_filter(struct evsel *evsel,
const char *filter);
-int evsel__apply_filter(struct evsel *evsel, const char *filter);
int evsel__enable(struct evsel *evsel);
int evsel__disable(struct evsel *evsel);

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