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Message-Id: <1321624005-6889-6-git-send-email-jolsa@redhat.com>
Date: Fri, 18 Nov 2011 14:46:45 +0100
From: Jiri Olsa <jolsa@...hat.com>
To: acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
paulus@...ba.org
Cc: linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH 5/5] perf tool: Putting mmap support to perf_data object
Adding event memory maps management under the perf_data
object. The objective is to have this functionality
centralized and dont mix this functionality into event
list.
New function 'perf_data__mmap' is added into perf_data. It prepares
allocates/prepares both perf_mmap and pollfd structures, and does
the actuall mmap-ing.
Each perf_mmap now contains perf_data_file structure,
to have memory map connected directly with the storage.
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
---
tools/perf/builtin-record.c | 29 +++++--
tools/perf/builtin-test.c | 13 +++-
tools/perf/builtin-top.c | 21 ++++--
tools/perf/util/data.c | 100 ++++++++++++++++++++++++
tools/perf/util/data.h | 13 +++
tools/perf/util/evlist.c | 181 ++-----------------------------------------
tools/perf/util/evlist.h | 8 +--
tools/perf/util/evsel.h | 4 +-
tools/perf/util/mmap.h | 3 +
tools/perf/util/python.c | 23 ++++--
tools/perf/util/session.h | 6 ++
11 files changed, 192 insertions(+), 209 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4b0cf7c..24bce09 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -318,8 +318,9 @@ try_again:
exit(-1);
}
- if (perf_evlist__mmap(evlist, mmap_pages, false) < 0)
- die("failed to mmap with %d (%s)\n", errno, strerror(errno));
+ if (perf_evlist__init_ids(evlist))
+ die("failed to init sample IDs %d (%s)\n",
+ errno, strerror(errno));
if (perf_session__is_new(session))
session->evlist = evlist;
@@ -402,18 +403,18 @@ static struct perf_event_header finished_round_event = {
.type = PERF_RECORD_FINISHED_ROUND,
};
-static void mmap_read(struct perf_mmap *m __used, void *buf, unsigned long size)
+static void mmap_read(struct perf_mmap *m, void *buf, unsigned long size)
{
- int fd = perf_session__fd(session);
+ int fd = perf_data__fd_file(m->file);
write_output(fd, buf, size);
}
-static int mmap_read_all(void)
+static int mmap_read_all(struct perf_data *data)
{
int i, ret = 0;
- for (i = 0; i < evsel_list->nr_mmaps; i++) {
- struct perf_mmap *m = &evsel_list->mmap[i];
+ for (i = 0; i < data->nr_mmaps; i++) {
+ struct perf_mmap *m = &data->mmaps[i];
ret += perf_mmap__process(m, mmap_read);
}
@@ -540,6 +541,13 @@ static int __cmd_record(int argc, const char **argv)
open_counters(evsel_list);
+ if (perf_data__mmap(perf_session__data(session),
+ evsel_list, mmap_pages, false) < 0) {
+ pr_err("Failed to mmap with %d (%s)\n",
+ errno, strerror(errno));
+ goto out_delete_session;
+ }
+
/*
* perf_session__delete(session) will be called at atexit_header()
*/
@@ -642,10 +650,13 @@ static int __cmd_record(int argc, const char **argv)
close(go_pipe[1]);
for (;;) {
- if (!mmap_read_all()) {
+ struct perf_data *data = perf_session__data(session);
+
+ if (!mmap_read_all(data)) {
+
if (done)
break;
- err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1);
+ err = poll(data->fds, data->nr_fds, -1);
waking++;
}
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index feb3218..d9b2cf3 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -478,6 +478,9 @@ static int test__basic_mmap(void)
struct perf_evsel *evsels[nsyscalls], *evsel;
int sample_size = __perf_evsel__sample_size(attr.sample_type);
struct perf_mmap *md;
+ struct perf_data data;
+
+ PERF_DATA__NONE(data);
for (i = 0; i < nsyscalls; ++i) {
char name[64];
@@ -541,7 +544,11 @@ static int test__basic_mmap(void)
}
}
- if (perf_evlist__mmap(evlist, 128, true) < 0) {
+ err = perf_evlist__init_ids(evlist);
+ if (err)
+ goto out_close_fd;
+
+ if (perf_data__mmap(&data, evlist, 128, true)) {
pr_debug("failed to mmap events: %d (%s)\n", errno,
strerror(errno));
goto out_close_fd;
@@ -553,7 +560,7 @@ static int test__basic_mmap(void)
++foo;
}
- md = &evlist->mmap[0];
+ md = &data.mmaps[0];
while ((event = perf_mmap__read(md)) != NULL) {
struct perf_sample sample;
@@ -591,7 +598,7 @@ static int test__basic_mmap(void)
err = 0;
out_munmap:
- perf_evlist__munmap(evlist);
+ perf_data__close(&data);
out_close_fd:
for (i = 0; i < nsyscalls; ++i)
perf_evsel__close_fd(evsels[i], 1, threads->nr);
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index e86d728..fcb1762 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -836,15 +836,16 @@ static void session_mmap_read(struct perf_session *self,
static void perf_session__mmap_read(struct perf_session *self)
{
+ struct perf_data *data = perf_session__data(self);
int i;
- for (i = 0; i < top.evlist->nr_mmaps; i++) {
- struct perf_mmap *md = &top.evlist->mmap[i];
+ for (i = 0; i < data->nr_mmaps; i++) {
+ struct perf_mmap *md = &data->mmaps[i];
session_mmap_read(self, md);
}
}
-static void start_counters(struct perf_evlist *evlist)
+static void start_counters(struct perf_data *data, struct perf_evlist *evlist)
{
struct perf_evsel *counter, *first;
@@ -925,7 +926,10 @@ try_again:
}
}
- if (perf_evlist__mmap(evlist, mmap_pages, false) < 0) {
+ if (perf_evlist__init_ids(evlist))
+ goto out_err;
+
+ if (perf_data__mmap(data, evlist, mmap_pages, false) < 0) {
ui__warning("Failed to mmap with %d (%s)\n",
errno, strerror(errno));
goto out_err;
@@ -957,6 +961,7 @@ static int setup_sample_type(void)
static int __cmd_top(void)
{
+ struct perf_data *data;
pthread_t thread;
int ret;
@@ -975,12 +980,14 @@ static int __cmd_top(void)
else
perf_event__synthesize_threads(perf_event__process, top.session);
- start_counters(top.evlist);
+ data = perf_session__data(top.session);
+
+ start_counters(data, top.evlist);
top.session->evlist = top.evlist;
perf_session__update_sample_type(top.session);
/* Wait for a minimal set of events before starting the snapshot */
- poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
+ poll(data->fds, data->nr_fds, 100);
perf_session__mmap_read(top.session);
@@ -1006,7 +1013,7 @@ static int __cmd_top(void)
perf_session__mmap_read(top.session);
if (hits == top.samples)
- ret = poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
+ ret = poll(data->fds, data->nr_fds, 100);
}
out_delete:
diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index c025d0f..86ce18dd 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -201,3 +201,103 @@ void perf_data__close(struct perf_data *data)
list_for_each_entry(file, &data->files, list)
data_file__close(data, file);
}
+
+static int data_file__ass_mmap(struct perf_data *data, struct perf_mmap *m)
+{
+ /*
+ * Currently we have only one file to store data to.
+ * In future we might open a file here and redirected perf_mmap
+ * data into it.
+ */
+ m->file = &data->header;
+ return 0;
+}
+
+static struct perf_mmap *data_mmap__new(struct perf_data *data)
+{
+ struct perf_mmap *m, *mmaps;
+ int nr = data->nr_mmaps;
+
+ mmaps = realloc(data->mmaps, (nr + 1) * sizeof(struct perf_mmap));
+ if (!mmaps)
+ return NULL;
+
+ data->nr_mmaps++;
+ data->mmaps = mmaps;
+
+ m = &data->mmaps[nr];
+ memset(m, 0, sizeof(*m));
+ return m;
+}
+
+static int data_fd__new(struct perf_data *data, int fd)
+{
+ struct pollfd *p, *fds;
+ int nr = data->nr_fds;
+
+ fds = realloc(data->fds, (nr + 1) * sizeof(struct perf_mmap));
+ if (!fds)
+ return -ENOMEM;
+
+ fcntl(fd, F_SETFL, O_NONBLOCK);
+
+ data->nr_fds++;
+ data->fds = fds;
+
+ p = &data->fds[nr];
+ p->fd = fd;
+ p->events = POLLIN;
+ return 0;
+}
+
+int perf_data__mmap(struct perf_data *data,
+ struct perf_evlist *evlist,
+ int pages, bool overwrite)
+{
+ bool cpu_bond = evlist->cpus->map[0] != -1;
+ struct perf_evsel *evsel;
+ int cpu, thread, ret, i;
+
+ for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
+ struct perf_mmap *m = NULL;
+
+ for (thread = 0; thread < evlist->threads->nr; thread++) {
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ int fd = PERF_EVSEL_FD(evsel, cpu, thread);
+
+ if (!m || !(cpu_bond && thread)) {
+ m = data_mmap__new(data);
+ if (!m) {
+ ret = -ENOMEM;
+ goto cleanup;
+ }
+
+ ret = -EINVAL;
+ if (perf_mmap__open(m, fd, overwrite,
+ pages))
+ goto cleanup;
+
+ if (data_file__ass_mmap(data, m))
+ goto cleanup;
+
+ } else {
+ ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT,
+ m->fd);
+ }
+
+ if (data_fd__new(data, fd))
+ return -ENOMEM;
+ }
+ }
+ }
+
+ return 0;
+
+ cleanup:
+ for (i = 0; i < data->nr_mmaps; i++) {
+ struct perf_mmap *m = &data->mmaps[i];
+ perf_mmap__close(m);
+ }
+
+ return ret;
+}
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index 3103f7a..148e175 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -28,12 +28,20 @@ struct perf_data {
int mode;
bool force;
+ struct perf_mmap *mmaps;
+ struct pollfd *fds;
+ int nr_mmaps;
+ int nr_fds;
+
struct list_head files;
};
int perf_data__open(struct perf_data *data, const char *name,
int mode, bool force);
void perf_data__close(struct perf_data *data);
+int perf_data__mmap(struct perf_data *data,
+ struct perf_evlist *evlist,
+ int pages, bool overwrite);
#define PERF_DATA__NONE(__data) \
perf_data__open(&__data, NULL, PERF_DATA_NONE, false);
@@ -62,4 +70,9 @@ static inline int perf_data__fd(struct perf_data *data)
{
return data->header.fd;
}
+
+static inline int perf_data__fd_file(struct perf_data_file *file)
+{
+ return file->fd;
+}
#endif /* __PERF_DATA_H */
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 2237833..21e3e0f 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -19,7 +19,6 @@
#include <linux/bitops.h>
#include <linux/hash.h>
-#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
@@ -56,18 +55,9 @@ static void perf_evlist__purge(struct perf_evlist *evlist)
evlist->nr_entries = 0;
}
-void perf_evlist__exit(struct perf_evlist *evlist)
-{
- free(evlist->mmap);
- free(evlist->pollfd);
- evlist->mmap = NULL;
- evlist->pollfd = NULL;
-}
-
void perf_evlist__delete(struct perf_evlist *evlist)
{
perf_evlist__purge(evlist);
- perf_evlist__exit(evlist);
free(evlist);
}
@@ -109,7 +99,8 @@ void perf_evlist__disable(struct perf_evlist *evlist)
for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
for (thread = 0; thread < evlist->threads->nr; thread++)
- ioctl(FD(pos, cpu, thread), PERF_EVENT_IOC_DISABLE);
+ ioctl(PERF_EVSEL_FD(pos, cpu, thread),
+ PERF_EVENT_IOC_DISABLE);
}
}
}
@@ -122,26 +113,12 @@ void perf_evlist__enable(struct perf_evlist *evlist)
for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
for (thread = 0; thread < evlist->threads->nr; thread++)
- ioctl(FD(pos, cpu, thread), PERF_EVENT_IOC_ENABLE);
+ ioctl(PERF_EVSEL_FD(pos, cpu, thread),
+ PERF_EVENT_IOC_ENABLE);
}
}
}
-int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
-{
- int nfds = evlist->cpus->nr * evlist->threads->nr * evlist->nr_entries;
- evlist->pollfd = malloc(sizeof(struct pollfd) * nfds);
- return evlist->pollfd != NULL ? 0 : -ENOMEM;
-}
-
-void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd)
-{
- fcntl(fd, F_SETFL, O_NONBLOCK);
- evlist->pollfd[evlist->nr_fds].fd = fd;
- evlist->pollfd[evlist->nr_fds].events = POLLIN;
- evlist->nr_fds++;
-}
-
static void perf_evlist__id_hash(struct perf_evlist *evlist,
struct perf_evsel *evsel,
int cpu, int thread, u64 id)
@@ -201,112 +178,7 @@ struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id)
return NULL;
}
-void perf_evlist__munmap(struct perf_evlist *evlist)
-{
- int i;
-
- for (i = 0; i < evlist->nr_mmaps; i++) {
- struct perf_mmap *m = &evlist->mmap[i];
- if (m->base != NULL)
- perf_mmap__close(m);
- }
-
- free(evlist->mmap);
- evlist->mmap = NULL;
-}
-
-int perf_evlist__alloc_mmap(struct perf_evlist *evlist)
-{
- evlist->nr_mmaps = evlist->cpus->nr;
- if (evlist->cpus->map[0] == -1)
- evlist->nr_mmaps = evlist->threads->nr;
- evlist->mmap = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap));
- return evlist->mmap != NULL ? 0 : -ENOMEM;
-}
-
-static int __perf_evlist__mmap(struct perf_evlist *evlist,
- int idx, int fd)
-{
- struct perf_mmap *m = &evlist->mmap[idx];
-
- if (perf_mmap__open(m, fd, evlist->overwrite, evlist->pages))
- return -1;
-
- perf_evlist__add_pollfd(evlist, fd);
- return 0;
-}
-
-static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist)
-{
- struct perf_evsel *evsel;
- int cpu, thread;
-
- for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
- int output = -1;
-
- for (thread = 0; thread < evlist->threads->nr; thread++) {
- list_for_each_entry(evsel, &evlist->entries, node) {
- int fd = FD(evsel, cpu, thread);
-
- if (output == -1) {
- output = fd;
- if (__perf_evlist__mmap(evlist, cpu,
- output) < 0)
- goto out_unmap;
- } else {
- if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0)
- goto out_unmap;
- }
- }
- }
- }
-
- return 0;
-
-out_unmap:
- for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
- struct perf_mmap *m = &evlist->mmap[cpu];
- if (m->base != NULL)
- perf_mmap__close(m);
- }
- return -1;
-}
-
-static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist)
-{
- struct perf_evsel *evsel;
- int thread;
-
- for (thread = 0; thread < evlist->threads->nr; thread++) {
- int output = -1;
-
- list_for_each_entry(evsel, &evlist->entries, node) {
- int fd = FD(evsel, 0, thread);
-
- if (output == -1) {
- output = fd;
- if (__perf_evlist__mmap(evlist, thread,
- output) < 0)
- goto out_unmap;
- } else {
- if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0)
- goto out_unmap;
- }
- }
- }
-
- return 0;
-
-out_unmap:
- for (thread = 0; thread < evlist->threads->nr; thread++) {
- struct perf_mmap *m = &evlist->mmap[thread];
- if (m->base != NULL)
- perf_mmap__close(m);
- }
- return -1;
-}
-
-static int perf_evlist__init_ids(struct perf_evlist *evlist)
+int perf_evlist__init_ids(struct perf_evlist *evlist)
{
struct perf_evsel *evsel;
struct thread_map *threads = evlist->threads;
@@ -323,7 +195,7 @@ static int perf_evlist__init_ids(struct perf_evlist *evlist)
for (cpu = 0; cpu < cpus->nr; cpu++)
for (thread = 0; thread < threads->nr; thread++) {
- int fd = FD(evsel, cpu, thread);
+ int fd = PERF_EVSEL_FD(evsel, cpu, thread);
if (perf_evlist__id_add_fd(evlist, evsel,
cpu, thread, fd))
return -EINVAL;
@@ -333,45 +205,6 @@ static int perf_evlist__init_ids(struct perf_evlist *evlist)
return 0;
}
-/** perf_evlist__mmap - Create per cpu maps to receive events
- *
- * @evlist - list of events
- * @pages - map length in pages
- * @overwrite - overwrite older events?
- *
- * If overwrite is false the user needs to signal event consuption using:
- *
- * struct perf_mmap *m = &evlist->mmap[cpu];
- * unsigned int head = perf_mmap__read_head(m);
- *
- * perf_mmap__write_tail(m, head)
- *
- * Using perf_evlist__read_on_cpu does this automatically.
- */
-int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite)
-{
- const struct cpu_map *cpus = evlist->cpus;
- int ret;
-
- if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist) < 0)
- return -ENOMEM;
-
- if (evlist->pollfd == NULL && perf_evlist__alloc_pollfd(evlist) < 0)
- return -ENOMEM;
-
- evlist->overwrite = overwrite;
- evlist->pages = pages;
-
- ret = perf_evlist__init_ids(evlist);
- if (ret)
- return ret;
-
- if (cpus->map[0] == -1)
- return perf_evlist__mmap_per_thread(evlist);
-
- return perf_evlist__mmap_per_cpu(evlist);
-}
-
int perf_evlist__create_maps(struct perf_evlist *evlist, pid_t target_pid,
pid_t target_tid, const char *cpu_list)
{
@@ -420,7 +253,7 @@ int perf_evlist__set_filters(struct perf_evlist *evlist)
continue;
for (cpu = 0; cpu < cpus->nr; cpu++) {
for (thread = 0; thread < threads->nr; thread++) {
- fd = FD(evsel, cpu, thread);
+ fd = PERF_EVSEL_FD(evsel, cpu, thread);
err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter);
if (err)
return err;
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 3784273..b187efb 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -16,13 +16,6 @@ struct perf_evlist {
struct list_head entries;
struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
int nr_entries;
- int nr_fds;
- int nr_mmaps;
- int pages;
- bool overwrite;
- union perf_event event_copy;
- struct perf_mmap *mmap;
- struct pollfd *pollfd;
struct thread_map *threads;
struct cpu_map *cpus;
struct perf_evsel *selected;
@@ -74,6 +67,7 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, pid_t target_pid,
pid_t target_tid, const char *cpu_list);
void perf_evlist__delete_maps(struct perf_evlist *evlist);
int perf_evlist__set_filters(struct perf_evlist *evlist);
+int perf_evlist__init_ids(struct perf_evlist *evlist);
u64 perf_evlist__sample_type(const struct perf_evlist *evlist);
bool perf_evlist__sample_id_all(const const struct perf_evlist *evlist);
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index b1d15e6..14e1864 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -8,7 +8,9 @@
#include "xyarray.h"
#include "cgroup.h"
#include "hist.h"
-
+
+#define PERF_EVSEL_FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
+
struct perf_counts_values {
union {
struct {
diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h
index 24cf88f..1152135 100644
--- a/tools/perf/util/mmap.h
+++ b/tools/perf/util/mmap.h
@@ -4,6 +4,7 @@
#include <sys/mman.h>
#include "event.h"
#include "../perf.h"
+#include "data.h"
struct perf_mmap {
void *base;
@@ -12,6 +13,8 @@ struct perf_mmap {
int len;
int fd;
bool owrt;
+
+ struct perf_data_file *file;
};
typedef void (*perf_mmap_process_t)(struct perf_mmap *m,
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 9dd47a4..263a7b5 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -7,6 +7,7 @@
#include "event.h"
#include "cpumap.h"
#include "thread_map.h"
+#include "data.h"
/* Define PyVarObject_HEAD_INIT for python 2.5 */
#ifndef PyVarObject_HEAD_INIT
@@ -598,7 +599,6 @@ static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
{
- perf_evsel__exit(&pevsel->evsel);
pevsel->ob_type->tp_free((PyObject*)pevsel);
}
@@ -668,6 +668,7 @@ static int pyrf_evsel__setup_types(void)
struct pyrf_evlist {
PyObject_HEAD
+ struct perf_data data;
struct perf_evlist evlist;
};
@@ -684,12 +685,12 @@ static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
threads = ((struct pyrf_thread_map *)pthreads)->threads;
cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
perf_evlist__init(&pevlist->evlist, cpus, threads);
+ PERF_DATA__NONE(pevlist->data);
return 0;
}
static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
{
- perf_evlist__exit(&pevlist->evlist);
pevlist->ob_type->tp_free((PyObject*)pevlist);
}
@@ -697,6 +698,7 @@ static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs)
{
struct perf_evlist *evlist = &pevlist->evlist;
+ struct perf_data *data = &pevlist->data;
static char *kwlist[] = { "pages", "overwrite", NULL };
int pages = 128, overwrite = false;
@@ -704,7 +706,12 @@ static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
&pages, &overwrite))
return NULL;
- if (perf_evlist__mmap(evlist, pages, overwrite) < 0) {
+ if (perf_evlist__init_ids(evlist)) {
+ PyErr_SetFromErrno(PyExc_OSError);
+ return NULL;
+ }
+
+ if (perf_data__mmap(data, evlist, pages, overwrite) < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
@@ -716,14 +723,14 @@ static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
PyObject *args, PyObject *kwargs)
{
- struct perf_evlist *evlist = &pevlist->evlist;
+ struct perf_data *data = &pevlist->data;
static char *kwlist[] = { "timeout", NULL };
int timeout = -1, n;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
return NULL;
- n = poll(evlist->pollfd, evlist->nr_fds, timeout);
+ n = poll(data->fds, data->nr_fds, timeout);
if (n < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
@@ -735,13 +742,13 @@ static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
PyObject *args __used, PyObject *kwargs __used)
{
- struct perf_evlist *evlist = &pevlist->evlist;
+ struct perf_data *data = &pevlist->data;
PyObject *list = PyList_New(0);
int i;
- for (i = 0; i < evlist->nr_fds; ++i) {
+ for (i = 0; i < data->nr_fds; ++i) {
PyObject *file;
- FILE *fp = fdopen(evlist->pollfd[i].fd, "r");
+ FILE *fp = fdopen(data->fds[i].fd, "r");
if (fp == NULL)
goto free_list;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index cbc37f3..1c5e0e8 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -191,4 +191,10 @@ static inline int perf_session__is_pipe(struct perf_session *self)
{
return perf_data__is_pipe(&self->data);
}
+
+static inline struct perf_data *perf_session__data(struct perf_session *self)
+{
+ return &self->data;
+}
+
#endif /* __PERF_SESSION_H */
--
1.7.4
--
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