From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/tools/perf/util/evlist.c | 1458 ++++++++++++++++++++++++++++++++-------------------------
1 files changed, 816 insertions(+), 642 deletions(-)
diff --git a/kernel/tools/perf/util/evlist.c b/kernel/tools/perf/util/evlist.c
index 819aa44..98ae432 100644
--- a/kernel/tools/perf/util/evlist.c
+++ b/kernel/tools/perf/util/evlist.c
@@ -1,26 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
*
* Parts came from builtin-{top,stat,record}.c, see those files for further
* copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
*/
-#include "util.h"
#include <api/fs/fs.h>
#include <errno.h>
#include <inttypes.h>
#include <poll.h>
#include "cpumap.h"
+#include "util/mmap.h"
#include "thread_map.h"
#include "target.h"
#include "evlist.h"
#include "evsel.h"
#include "debug.h"
#include "units.h"
+#include <internal/lib.h> // page_size
+#include "affinity.h"
+#include "../perf.h"
#include "asm/bug.h"
+#include "bpf-event.h"
+#include "util/string2.h"
+#include "util/perf_api_probe.h"
#include <signal.h>
#include <unistd.h>
+#include <sched.h>
+#include <stdlib.h>
#include "parse-events.h"
#include <subcmd/parse-options.h>
@@ -33,56 +40,62 @@
#include <linux/hash.h>
#include <linux/log2.h>
#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/zalloc.h>
+#include <perf/evlist.h>
+#include <perf/evsel.h>
+#include <perf/cpumap.h>
+#include <perf/mmap.h>
+
+#include <internal/xyarray.h>
#ifdef LACKS_SIGQUEUE_PROTOTYPE
int sigqueue(pid_t pid, int sig, const union sigval value);
#endif
-#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
-#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
+#define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y))
+#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y)
-void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
- struct thread_map *threads)
+void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus,
+ struct perf_thread_map *threads)
{
- int i;
-
- for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i)
- INIT_HLIST_HEAD(&evlist->heads[i]);
- INIT_LIST_HEAD(&evlist->entries);
- perf_evlist__set_maps(evlist, cpus, threads);
- fdarray__init(&evlist->pollfd, 64);
+ perf_evlist__init(&evlist->core);
+ perf_evlist__set_maps(&evlist->core, cpus, threads);
evlist->workload.pid = -1;
evlist->bkw_mmap_state = BKW_MMAP_NOTREADY;
+ evlist->ctl_fd.fd = -1;
+ evlist->ctl_fd.ack = -1;
+ evlist->ctl_fd.pos = -1;
}
-struct perf_evlist *perf_evlist__new(void)
+struct evlist *evlist__new(void)
{
- struct perf_evlist *evlist = zalloc(sizeof(*evlist));
+ struct evlist *evlist = zalloc(sizeof(*evlist));
if (evlist != NULL)
- perf_evlist__init(evlist, NULL, NULL);
+ evlist__init(evlist, NULL, NULL);
return evlist;
}
-struct perf_evlist *perf_evlist__new_default(void)
+struct evlist *perf_evlist__new_default(void)
{
- struct perf_evlist *evlist = perf_evlist__new();
+ struct evlist *evlist = evlist__new();
- if (evlist && perf_evlist__add_default(evlist)) {
- perf_evlist__delete(evlist);
+ if (evlist && evlist__add_default(evlist)) {
+ evlist__delete(evlist);
evlist = NULL;
}
return evlist;
}
-struct perf_evlist *perf_evlist__new_dummy(void)
+struct evlist *perf_evlist__new_dummy(void)
{
- struct perf_evlist *evlist = perf_evlist__new();
+ struct evlist *evlist = evlist__new();
- if (evlist && perf_evlist__add_dummy(evlist)) {
- perf_evlist__delete(evlist);
+ if (evlist && evlist__add_dummy(evlist)) {
+ evlist__delete(evlist);
evlist = NULL;
}
@@ -96,193 +109,169 @@
* Events with compatible sample types all have the same id_pos
* and is_pos. For convenience, put a copy on evlist.
*/
-void perf_evlist__set_id_pos(struct perf_evlist *evlist)
+void perf_evlist__set_id_pos(struct evlist *evlist)
{
- struct perf_evsel *first = perf_evlist__first(evlist);
+ struct evsel *first = evlist__first(evlist);
evlist->id_pos = first->id_pos;
evlist->is_pos = first->is_pos;
}
-static void perf_evlist__update_id_pos(struct perf_evlist *evlist)
+static void perf_evlist__update_id_pos(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel)
- perf_evsel__calc_id_pos(evsel);
+ evsel__calc_id_pos(evsel);
perf_evlist__set_id_pos(evlist);
}
-static void perf_evlist__purge(struct perf_evlist *evlist)
+static void evlist__purge(struct evlist *evlist)
{
- struct perf_evsel *pos, *n;
+ struct evsel *pos, *n;
evlist__for_each_entry_safe(evlist, n, pos) {
- list_del_init(&pos->node);
+ list_del_init(&pos->core.node);
pos->evlist = NULL;
- perf_evsel__delete(pos);
+ evsel__delete(pos);
}
- evlist->nr_entries = 0;
+ evlist->core.nr_entries = 0;
}
-void perf_evlist__exit(struct perf_evlist *evlist)
+void evlist__exit(struct evlist *evlist)
{
zfree(&evlist->mmap);
zfree(&evlist->overwrite_mmap);
- fdarray__exit(&evlist->pollfd);
+ perf_evlist__exit(&evlist->core);
}
-void perf_evlist__delete(struct perf_evlist *evlist)
+void evlist__delete(struct evlist *evlist)
{
if (evlist == NULL)
return;
- perf_evlist__munmap(evlist);
- perf_evlist__close(evlist);
- cpu_map__put(evlist->cpus);
- thread_map__put(evlist->threads);
- evlist->cpus = NULL;
- evlist->threads = NULL;
- perf_evlist__purge(evlist);
- perf_evlist__exit(evlist);
+ evlist__munmap(evlist);
+ evlist__close(evlist);
+ evlist__purge(evlist);
+ evlist__exit(evlist);
free(evlist);
}
-static void __perf_evlist__propagate_maps(struct perf_evlist *evlist,
- struct perf_evsel *evsel)
-{
- /*
- * We already have cpus for evsel (via PMU sysfs) so
- * keep it, if there's no target cpu list defined.
- */
- if (!evsel->own_cpus || evlist->has_user_cpus) {
- cpu_map__put(evsel->cpus);
- evsel->cpus = cpu_map__get(evlist->cpus);
- } else if (evsel->cpus != evsel->own_cpus) {
- cpu_map__put(evsel->cpus);
- evsel->cpus = cpu_map__get(evsel->own_cpus);
- }
-
- thread_map__put(evsel->threads);
- evsel->threads = thread_map__get(evlist->threads);
-}
-
-static void perf_evlist__propagate_maps(struct perf_evlist *evlist)
-{
- struct perf_evsel *evsel;
-
- evlist__for_each_entry(evlist, evsel)
- __perf_evlist__propagate_maps(evlist, evsel);
-}
-
-void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry)
+void evlist__add(struct evlist *evlist, struct evsel *entry)
{
entry->evlist = evlist;
- list_add_tail(&entry->node, &evlist->entries);
- entry->idx = evlist->nr_entries;
+ entry->idx = evlist->core.nr_entries;
entry->tracking = !entry->idx;
- if (!evlist->nr_entries++)
- perf_evlist__set_id_pos(evlist);
+ perf_evlist__add(&evlist->core, &entry->core);
- __perf_evlist__propagate_maps(evlist, entry);
+ if (evlist->core.nr_entries == 1)
+ perf_evlist__set_id_pos(evlist);
}
-void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel)
+void evlist__remove(struct evlist *evlist, struct evsel *evsel)
{
evsel->evlist = NULL;
- list_del_init(&evsel->node);
- evlist->nr_entries -= 1;
+ perf_evlist__remove(&evlist->core, &evsel->core);
}
-void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
+void perf_evlist__splice_list_tail(struct evlist *evlist,
struct list_head *list)
{
- struct perf_evsel *evsel, *temp;
+ struct evsel *evsel, *temp;
__evlist__for_each_entry_safe(list, temp, evsel) {
- list_del_init(&evsel->node);
- perf_evlist__add(evlist, evsel);
+ list_del_init(&evsel->core.node);
+ evlist__add(evlist, evsel);
}
+}
+
+int __evlist__set_tracepoints_handlers(struct evlist *evlist,
+ const struct evsel_str_handler *assocs, size_t nr_assocs)
+{
+ struct evsel *evsel;
+ size_t i;
+ int err;
+
+ for (i = 0; i < nr_assocs; i++) {
+ // Adding a handler for an event not in this evlist, just ignore it.
+ evsel = perf_evlist__find_tracepoint_by_name(evlist, assocs[i].name);
+ if (evsel == NULL)
+ continue;
+
+ err = -EEXIST;
+ if (evsel->handler != NULL)
+ goto out;
+ evsel->handler = assocs[i].handler;
+ }
+
+ err = 0;
+out:
+ return err;
}
void __perf_evlist__set_leader(struct list_head *list)
{
- struct perf_evsel *evsel, *leader;
+ struct evsel *evsel, *leader;
- leader = list_entry(list->next, struct perf_evsel, node);
- evsel = list_entry(list->prev, struct perf_evsel, node);
+ leader = list_entry(list->next, struct evsel, core.node);
+ evsel = list_entry(list->prev, struct evsel, core.node);
- leader->nr_members = evsel->idx - leader->idx + 1;
+ leader->core.nr_members = evsel->idx - leader->idx + 1;
__evlist__for_each_entry(list, evsel) {
evsel->leader = leader;
}
}
-void perf_evlist__set_leader(struct perf_evlist *evlist)
+void perf_evlist__set_leader(struct evlist *evlist)
{
- if (evlist->nr_entries) {
- evlist->nr_groups = evlist->nr_entries > 1 ? 1 : 0;
- __perf_evlist__set_leader(&evlist->entries);
+ if (evlist->core.nr_entries) {
+ evlist->nr_groups = evlist->core.nr_entries > 1 ? 1 : 0;
+ __perf_evlist__set_leader(&evlist->core.entries);
}
}
-void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr)
+int __evlist__add_default(struct evlist *evlist, bool precise)
{
- attr->precise_ip = 3;
-
- while (attr->precise_ip != 0) {
- int fd = sys_perf_event_open(attr, 0, -1, -1, 0);
- if (fd != -1) {
- close(fd);
- break;
- }
- --attr->precise_ip;
- }
-}
-
-int __perf_evlist__add_default(struct perf_evlist *evlist, bool precise)
-{
- struct perf_evsel *evsel = perf_evsel__new_cycles(precise);
+ struct evsel *evsel = evsel__new_cycles(precise);
if (evsel == NULL)
return -ENOMEM;
- perf_evlist__add(evlist, evsel);
+ evlist__add(evlist, evsel);
return 0;
}
-int perf_evlist__add_dummy(struct perf_evlist *evlist)
+int evlist__add_dummy(struct evlist *evlist)
{
struct perf_event_attr attr = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_DUMMY,
.size = sizeof(attr), /* to capture ABI version */
};
- struct perf_evsel *evsel = perf_evsel__new_idx(&attr, evlist->nr_entries);
+ struct evsel *evsel = evsel__new_idx(&attr, evlist->core.nr_entries);
if (evsel == NULL)
return -ENOMEM;
- perf_evlist__add(evlist, evsel);
+ evlist__add(evlist, evsel);
return 0;
}
-static int perf_evlist__add_attrs(struct perf_evlist *evlist,
- struct perf_event_attr *attrs, size_t nr_attrs)
+static int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs)
{
- struct perf_evsel *evsel, *n;
+ struct evsel *evsel, *n;
LIST_HEAD(head);
size_t i;
for (i = 0; i < nr_attrs; i++) {
- evsel = perf_evsel__new_idx(attrs + i, evlist->nr_entries + i);
+ evsel = evsel__new_idx(attrs + i, evlist->core.nr_entries + i);
if (evsel == NULL)
goto out_delete_partial_list;
- list_add_tail(&evsel->node, &head);
+ list_add_tail(&evsel->core.node, &head);
}
perf_evlist__splice_list_tail(evlist, &head);
@@ -291,43 +280,42 @@
out_delete_partial_list:
__evlist__for_each_entry_safe(&head, n, evsel)
- perf_evsel__delete(evsel);
+ evsel__delete(evsel);
return -1;
}
-int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
- struct perf_event_attr *attrs, size_t nr_attrs)
+int __evlist__add_default_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs)
{
size_t i;
for (i = 0; i < nr_attrs; i++)
event_attr_init(attrs + i);
- return perf_evlist__add_attrs(evlist, attrs, nr_attrs);
+ return evlist__add_attrs(evlist, attrs, nr_attrs);
}
-struct perf_evsel *
-perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id)
+struct evsel *
+perf_evlist__find_tracepoint_by_id(struct evlist *evlist, int id)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel) {
- if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
- (int)evsel->attr.config == id)
+ if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT &&
+ (int)evsel->core.attr.config == id)
return evsel;
}
return NULL;
}
-struct perf_evsel *
-perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
+struct evsel *
+perf_evlist__find_tracepoint_by_name(struct evlist *evlist,
const char *name)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel) {
- if ((evsel->attr.type == PERF_TYPE_TRACEPOINT) &&
+ if ((evsel->core.attr.type == PERF_TYPE_TRACEPOINT) &&
(strcmp(evsel->name, name) == 0))
return evsel;
}
@@ -335,66 +323,142 @@
return NULL;
}
-int perf_evlist__add_newtp(struct perf_evlist *evlist,
- const char *sys, const char *name, void *handler)
+int evlist__add_newtp(struct evlist *evlist, const char *sys, const char *name, void *handler)
{
- struct perf_evsel *evsel = perf_evsel__newtp(sys, name);
+ struct evsel *evsel = evsel__newtp(sys, name);
if (IS_ERR(evsel))
return -1;
evsel->handler = handler;
- perf_evlist__add(evlist, evsel);
+ evlist__add(evlist, evsel);
return 0;
}
-static int perf_evlist__nr_threads(struct perf_evlist *evlist,
- struct perf_evsel *evsel)
+static int perf_evlist__nr_threads(struct evlist *evlist,
+ struct evsel *evsel)
{
- if (evsel->system_wide)
+ if (evsel->core.system_wide)
return 1;
else
- return thread_map__nr(evlist->threads);
+ return perf_thread_map__nr(evlist->core.threads);
}
-void perf_evlist__disable(struct perf_evlist *evlist)
+void evlist__cpu_iter_start(struct evlist *evlist)
{
- struct perf_evsel *pos;
+ struct evsel *pos;
+ /*
+ * Reset the per evsel cpu_iter. This is needed because
+ * each evsel's cpumap may have a different index space,
+ * and some operations need the index to modify
+ * the FD xyarray (e.g. open, close)
+ */
+ evlist__for_each_entry(evlist, pos)
+ pos->cpu_iter = 0;
+}
+
+bool evsel__cpu_iter_skip_no_inc(struct evsel *ev, int cpu)
+{
+ if (ev->cpu_iter >= ev->core.cpus->nr)
+ return true;
+ if (cpu >= 0 && ev->core.cpus->map[ev->cpu_iter] != cpu)
+ return true;
+ return false;
+}
+
+bool evsel__cpu_iter_skip(struct evsel *ev, int cpu)
+{
+ if (!evsel__cpu_iter_skip_no_inc(ev, cpu)) {
+ ev->cpu_iter++;
+ return false;
+ }
+ return true;
+}
+
+void evlist__disable(struct evlist *evlist)
+{
+ struct evsel *pos;
+ struct affinity affinity;
+ int cpu, i, imm = 0;
+ bool has_imm = false;
+
+ if (affinity__setup(&affinity) < 0)
+ return;
+
+ /* Disable 'immediate' events last */
+ for (imm = 0; imm <= 1; imm++) {
+ evlist__for_each_cpu(evlist, i, cpu) {
+ affinity__set(&affinity, cpu);
+
+ evlist__for_each_entry(evlist, pos) {
+ if (evsel__cpu_iter_skip(pos, cpu))
+ continue;
+ if (pos->disabled || !evsel__is_group_leader(pos) || !pos->core.fd)
+ continue;
+ if (pos->immediate)
+ has_imm = true;
+ if (pos->immediate != imm)
+ continue;
+ evsel__disable_cpu(pos, pos->cpu_iter - 1);
+ }
+ }
+ if (!has_imm)
+ break;
+ }
+
+ affinity__cleanup(&affinity);
evlist__for_each_entry(evlist, pos) {
- if (!perf_evsel__is_group_leader(pos) || !pos->fd)
+ if (!evsel__is_group_leader(pos) || !pos->core.fd)
continue;
- perf_evsel__disable(pos);
+ pos->disabled = true;
}
evlist->enabled = false;
}
-void perf_evlist__enable(struct perf_evlist *evlist)
+void evlist__enable(struct evlist *evlist)
{
- struct perf_evsel *pos;
+ struct evsel *pos;
+ struct affinity affinity;
+ int cpu, i;
+ if (affinity__setup(&affinity) < 0)
+ return;
+
+ evlist__for_each_cpu(evlist, i, cpu) {
+ affinity__set(&affinity, cpu);
+
+ evlist__for_each_entry(evlist, pos) {
+ if (evsel__cpu_iter_skip(pos, cpu))
+ continue;
+ if (!evsel__is_group_leader(pos) || !pos->core.fd)
+ continue;
+ evsel__enable_cpu(pos, pos->cpu_iter - 1);
+ }
+ }
+ affinity__cleanup(&affinity);
evlist__for_each_entry(evlist, pos) {
- if (!perf_evsel__is_group_leader(pos) || !pos->fd)
+ if (!evsel__is_group_leader(pos) || !pos->core.fd)
continue;
- perf_evsel__enable(pos);
+ pos->disabled = false;
}
evlist->enabled = true;
}
-void perf_evlist__toggle_enable(struct perf_evlist *evlist)
+void perf_evlist__toggle_enable(struct evlist *evlist)
{
- (evlist->enabled ? perf_evlist__disable : perf_evlist__enable)(evlist);
+ (evlist->enabled ? evlist__disable : evlist__enable)(evlist);
}
-static int perf_evlist__enable_event_cpu(struct perf_evlist *evlist,
- struct perf_evsel *evsel, int cpu)
+static int perf_evlist__enable_event_cpu(struct evlist *evlist,
+ struct evsel *evsel, int cpu)
{
int thread;
int nr_threads = perf_evlist__nr_threads(evlist, evsel);
- if (!evsel->fd)
+ if (!evsel->core.fd)
return -EINVAL;
for (thread = 0; thread < nr_threads; thread++) {
@@ -405,14 +469,14 @@
return 0;
}
-static int perf_evlist__enable_event_thread(struct perf_evlist *evlist,
- struct perf_evsel *evsel,
+static int perf_evlist__enable_event_thread(struct evlist *evlist,
+ struct evsel *evsel,
int thread)
{
int cpu;
- int nr_cpus = cpu_map__nr(evlist->cpus);
+ int nr_cpus = perf_cpu_map__nr(evlist->core.cpus);
- if (!evsel->fd)
+ if (!evsel->core.fd)
return -EINVAL;
for (cpu = 0; cpu < nr_cpus; cpu++) {
@@ -423,10 +487,10 @@
return 0;
}
-int perf_evlist__enable_event_idx(struct perf_evlist *evlist,
- struct perf_evsel *evsel, int idx)
+int perf_evlist__enable_event_idx(struct evlist *evlist,
+ struct evsel *evsel, int idx)
{
- bool per_cpu_mmaps = !cpu_map__empty(evlist->cpus);
+ bool per_cpu_mmaps = !perf_cpu_map__empty(evlist->core.cpus);
if (per_cpu_mmaps)
return perf_evlist__enable_event_cpu(evlist, evsel, idx);
@@ -434,154 +498,37 @@
return perf_evlist__enable_event_thread(evlist, evsel, idx);
}
-int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
+int evlist__add_pollfd(struct evlist *evlist, int fd)
{
- int nr_cpus = cpu_map__nr(evlist->cpus);
- int nr_threads = thread_map__nr(evlist->threads);
- int nfds = 0;
- struct perf_evsel *evsel;
-
- evlist__for_each_entry(evlist, evsel) {
- if (evsel->system_wide)
- nfds += nr_cpus;
- else
- nfds += nr_cpus * nr_threads;
- }
-
- if (fdarray__available_entries(&evlist->pollfd) < nfds &&
- fdarray__grow(&evlist->pollfd, nfds) < 0)
- return -ENOMEM;
-
- return 0;
+ return perf_evlist__add_pollfd(&evlist->core, fd, NULL, POLLIN, fdarray_flag__default);
}
-static int __perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
- struct perf_mmap *map, short revent)
+int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask)
{
- int pos = fdarray__add(&evlist->pollfd, fd, revent | POLLERR | POLLHUP);
- /*
- * Save the idx so that when we filter out fds POLLHUP'ed we can
- * close the associated evlist->mmap[] entry.
- */
- if (pos >= 0) {
- evlist->pollfd.priv[pos].ptr = map;
-
- fcntl(fd, F_SETFL, O_NONBLOCK);
- }
-
- return pos;
+ return perf_evlist__filter_pollfd(&evlist->core, revents_and_mask);
}
-int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd)
+#ifdef HAVE_EVENTFD_SUPPORT
+int evlist__add_wakeup_eventfd(struct evlist *evlist, int fd)
{
- return __perf_evlist__add_pollfd(evlist, fd, NULL, POLLIN);
+ return perf_evlist__add_pollfd(&evlist->core, fd, NULL, POLLIN,
+ fdarray_flag__nonfilterable);
+}
+#endif
+
+int evlist__poll(struct evlist *evlist, int timeout)
+{
+ return perf_evlist__poll(&evlist->core, timeout);
}
-static void perf_evlist__munmap_filtered(struct fdarray *fda, int fd,
- void *arg __maybe_unused)
-{
- struct perf_mmap *map = fda->priv[fd].ptr;
-
- if (map)
- perf_mmap__put(map);
-}
-
-int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask)
-{
- return fdarray__filter(&evlist->pollfd, revents_and_mask,
- perf_evlist__munmap_filtered, NULL);
-}
-
-int perf_evlist__poll(struct perf_evlist *evlist, int timeout)
-{
- return fdarray__poll(&evlist->pollfd, timeout);
-}
-
-static void perf_evlist__id_hash(struct perf_evlist *evlist,
- struct perf_evsel *evsel,
- int cpu, int thread, u64 id)
-{
- int hash;
- struct perf_sample_id *sid = SID(evsel, cpu, thread);
-
- sid->id = id;
- sid->evsel = evsel;
- hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS);
- hlist_add_head(&sid->node, &evlist->heads[hash]);
-}
-
-void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
- int cpu, int thread, u64 id)
-{
- perf_evlist__id_hash(evlist, evsel, cpu, thread, id);
- evsel->id[evsel->ids++] = id;
-}
-
-int perf_evlist__id_add_fd(struct perf_evlist *evlist,
- struct perf_evsel *evsel,
- int cpu, int thread, int fd)
-{
- u64 read_data[4] = { 0, };
- int id_idx = 1; /* The first entry is the counter value */
- u64 id;
- int ret;
-
- ret = ioctl(fd, PERF_EVENT_IOC_ID, &id);
- if (!ret)
- goto add;
-
- if (errno != ENOTTY)
- return -1;
-
- /* Legacy way to get event id.. All hail to old kernels! */
-
- /*
- * This way does not work with group format read, so bail
- * out in that case.
- */
- if (perf_evlist__read_format(evlist) & PERF_FORMAT_GROUP)
- return -1;
-
- if (!(evsel->attr.read_format & PERF_FORMAT_ID) ||
- read(fd, &read_data, sizeof(read_data)) == -1)
- return -1;
-
- if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
- ++id_idx;
- if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
- ++id_idx;
-
- id = read_data[id_idx];
-
- add:
- perf_evlist__id_add(evlist, evsel, cpu, thread, id);
- return 0;
-}
-
-static void perf_evlist__set_sid_idx(struct perf_evlist *evlist,
- struct perf_evsel *evsel, int idx, int cpu,
- int thread)
-{
- struct perf_sample_id *sid = SID(evsel, cpu, thread);
- sid->idx = idx;
- if (evlist->cpus && cpu >= 0)
- sid->cpu = evlist->cpus->map[cpu];
- else
- sid->cpu = -1;
- if (!evsel->system_wide && evlist->threads && thread >= 0)
- sid->tid = thread_map__pid(evlist->threads, thread);
- else
- sid->tid = -1;
-}
-
-struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id)
+struct perf_sample_id *perf_evlist__id2sid(struct evlist *evlist, u64 id)
{
struct hlist_head *head;
struct perf_sample_id *sid;
int hash;
hash = hash_64(id, PERF_EVLIST__HLIST_BITS);
- head = &evlist->heads[hash];
+ head = &evlist->core.heads[hash];
hlist_for_each_entry(sid, head, node)
if (sid->id == id)
@@ -590,24 +537,24 @@
return NULL;
}
-struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id)
+struct evsel *perf_evlist__id2evsel(struct evlist *evlist, u64 id)
{
struct perf_sample_id *sid;
- if (evlist->nr_entries == 1 || !id)
- return perf_evlist__first(evlist);
+ if (evlist->core.nr_entries == 1 || !id)
+ return evlist__first(evlist);
sid = perf_evlist__id2sid(evlist, id);
if (sid)
- return sid->evsel;
+ return container_of(sid->evsel, struct evsel, core);
- if (!perf_evlist__sample_id_all(evlist))
- return perf_evlist__first(evlist);
+ if (!evlist__sample_id_all(evlist))
+ return evlist__first(evlist);
return NULL;
}
-struct perf_evsel *perf_evlist__id2evsel_strict(struct perf_evlist *evlist,
+struct evsel *perf_evlist__id2evsel_strict(struct evlist *evlist,
u64 id)
{
struct perf_sample_id *sid;
@@ -617,15 +564,15 @@
sid = perf_evlist__id2sid(evlist, id);
if (sid)
- return sid->evsel;
+ return container_of(sid->evsel, struct evsel, core);
return NULL;
}
-static int perf_evlist__event2id(struct perf_evlist *evlist,
+static int perf_evlist__event2id(struct evlist *evlist,
union perf_event *event, u64 *id)
{
- const u64 *array = event->sample.array;
+ const __u64 *array = event->sample.array;
ssize_t n;
n = (event->header.size - sizeof(event->header)) >> 3;
@@ -643,19 +590,19 @@
return 0;
}
-struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist,
+struct evsel *perf_evlist__event2evsel(struct evlist *evlist,
union perf_event *event)
{
- struct perf_evsel *first = perf_evlist__first(evlist);
+ struct evsel *first = evlist__first(evlist);
struct hlist_head *head;
struct perf_sample_id *sid;
int hash;
u64 id;
- if (evlist->nr_entries == 1)
+ if (evlist->core.nr_entries == 1)
return first;
- if (!first->attr.sample_id_all &&
+ if (!first->core.attr.sample_id_all &&
event->header.type != PERF_RECORD_SAMPLE)
return first;
@@ -667,24 +614,24 @@
return first;
hash = hash_64(id, PERF_EVLIST__HLIST_BITS);
- head = &evlist->heads[hash];
+ head = &evlist->core.heads[hash];
hlist_for_each_entry(sid, head, node) {
if (sid->id == id)
- return sid->evsel;
+ return container_of(sid->evsel, struct evsel, core);
}
return NULL;
}
-static int perf_evlist__set_paused(struct perf_evlist *evlist, bool value)
+static int perf_evlist__set_paused(struct evlist *evlist, bool value)
{
int i;
if (!evlist->overwrite_mmap)
return 0;
- for (i = 0; i < evlist->nr_mmaps; i++) {
- int fd = evlist->overwrite_mmap[i].fd;
+ for (i = 0; i < evlist->core.nr_mmaps; i++) {
+ int fd = evlist->overwrite_mmap[i].core.fd;
int err;
if (fd < 0)
@@ -696,52 +643,56 @@
return 0;
}
-static int perf_evlist__pause(struct perf_evlist *evlist)
+static int perf_evlist__pause(struct evlist *evlist)
{
return perf_evlist__set_paused(evlist, true);
}
-static int perf_evlist__resume(struct perf_evlist *evlist)
+static int perf_evlist__resume(struct evlist *evlist)
{
return perf_evlist__set_paused(evlist, false);
}
-static void perf_evlist__munmap_nofree(struct perf_evlist *evlist)
+static void evlist__munmap_nofree(struct evlist *evlist)
{
int i;
if (evlist->mmap)
- for (i = 0; i < evlist->nr_mmaps; i++)
- perf_mmap__munmap(&evlist->mmap[i]);
+ for (i = 0; i < evlist->core.nr_mmaps; i++)
+ perf_mmap__munmap(&evlist->mmap[i].core);
if (evlist->overwrite_mmap)
- for (i = 0; i < evlist->nr_mmaps; i++)
- perf_mmap__munmap(&evlist->overwrite_mmap[i]);
+ for (i = 0; i < evlist->core.nr_mmaps; i++)
+ perf_mmap__munmap(&evlist->overwrite_mmap[i].core);
}
-void perf_evlist__munmap(struct perf_evlist *evlist)
+void evlist__munmap(struct evlist *evlist)
{
- perf_evlist__munmap_nofree(evlist);
+ evlist__munmap_nofree(evlist);
zfree(&evlist->mmap);
zfree(&evlist->overwrite_mmap);
}
-static struct perf_mmap *perf_evlist__alloc_mmap(struct perf_evlist *evlist,
- bool overwrite)
+static void perf_mmap__unmap_cb(struct perf_mmap *map)
+{
+ struct mmap *m = container_of(map, struct mmap, core);
+
+ mmap__munmap(m);
+}
+
+static struct mmap *evlist__alloc_mmap(struct evlist *evlist,
+ bool overwrite)
{
int i;
- struct perf_mmap *map;
+ struct mmap *map;
- evlist->nr_mmaps = cpu_map__nr(evlist->cpus);
- if (cpu_map__empty(evlist->cpus))
- evlist->nr_mmaps = thread_map__nr(evlist->threads);
- map = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap));
+ map = zalloc(evlist->core.nr_mmaps * sizeof(struct mmap));
if (!map)
return NULL;
- for (i = 0; i < evlist->nr_mmaps; i++) {
- map[i].fd = -1;
- map[i].overwrite = overwrite;
+ for (i = 0; i < evlist->core.nr_mmaps; i++) {
+ struct perf_mmap *prev = i ? &map[i - 1].core : NULL;
+
/*
* When the perf_mmap() call is made we grab one refcount, plus
* one extra to let perf_mmap__consume() get the last
@@ -751,151 +702,56 @@
* Each PERF_EVENT_IOC_SET_OUTPUT points to this mmap and
* thus does perf_mmap__get() on it.
*/
- refcount_set(&map[i].refcnt, 0);
+ perf_mmap__init(&map[i].core, prev, overwrite, perf_mmap__unmap_cb);
}
+
return map;
}
-static bool
-perf_evlist__should_poll(struct perf_evlist *evlist __maybe_unused,
- struct perf_evsel *evsel)
+static void
+perf_evlist__mmap_cb_idx(struct perf_evlist *_evlist,
+ struct perf_mmap_param *_mp,
+ int idx, bool per_cpu)
{
- if (evsel->attr.write_backward)
- return false;
- return true;
+ struct evlist *evlist = container_of(_evlist, struct evlist, core);
+ struct mmap_params *mp = container_of(_mp, struct mmap_params, core);
+
+ auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, idx, per_cpu);
}
-static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx,
- struct mmap_params *mp, int cpu_idx,
- int thread, int *_output, int *_output_overwrite)
+static struct perf_mmap*
+perf_evlist__mmap_cb_get(struct perf_evlist *_evlist, bool overwrite, int idx)
{
- struct perf_evsel *evsel;
- int revent;
- int evlist_cpu = cpu_map__cpu(evlist->cpus, cpu_idx);
+ struct evlist *evlist = container_of(_evlist, struct evlist, core);
+ struct mmap *maps;
- evlist__for_each_entry(evlist, evsel) {
- struct perf_mmap *maps = evlist->mmap;
- int *output = _output;
- int fd;
- int cpu;
+ maps = overwrite ? evlist->overwrite_mmap : evlist->mmap;
- mp->prot = PROT_READ | PROT_WRITE;
- if (evsel->attr.write_backward) {
- output = _output_overwrite;
- maps = evlist->overwrite_mmap;
+ if (!maps) {
+ maps = evlist__alloc_mmap(evlist, overwrite);
+ if (!maps)
+ return NULL;
- if (!maps) {
- maps = perf_evlist__alloc_mmap(evlist, true);
- if (!maps)
- return -1;
- evlist->overwrite_mmap = maps;
- if (evlist->bkw_mmap_state == BKW_MMAP_NOTREADY)
- perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING);
- }
- mp->prot &= ~PROT_WRITE;
- }
-
- if (evsel->system_wide && thread)
- continue;
-
- cpu = cpu_map__idx(evsel->cpus, evlist_cpu);
- if (cpu == -1)
- continue;
-
- fd = FD(evsel, cpu, thread);
-
- if (*output == -1) {
- *output = fd;
-
- if (perf_mmap__mmap(&maps[idx], mp, *output, evlist_cpu) < 0)
- return -1;
+ if (overwrite) {
+ evlist->overwrite_mmap = maps;
+ if (evlist->bkw_mmap_state == BKW_MMAP_NOTREADY)
+ perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING);
} else {
- if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, *output) != 0)
- return -1;
-
- perf_mmap__get(&maps[idx]);
- }
-
- revent = perf_evlist__should_poll(evlist, evsel) ? POLLIN : 0;
-
- /*
- * The system_wide flag causes a selected event to be opened
- * always without a pid. Consequently it will never get a
- * POLLHUP, but it is used for tracking in combination with
- * other events, so it should not need to be polled anyway.
- * Therefore don't add it for polling.
- */
- if (!evsel->system_wide &&
- __perf_evlist__add_pollfd(evlist, fd, &maps[idx], revent) < 0) {
- perf_mmap__put(&maps[idx]);
- return -1;
- }
-
- if (evsel->attr.read_format & PERF_FORMAT_ID) {
- if (perf_evlist__id_add_fd(evlist, evsel, cpu, thread,
- fd) < 0)
- return -1;
- perf_evlist__set_sid_idx(evlist, evsel, idx, cpu,
- thread);
+ evlist->mmap = maps;
}
}
- return 0;
+ return &maps[idx].core;
}
-static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist,
- struct mmap_params *mp)
+static int
+perf_evlist__mmap_cb_mmap(struct perf_mmap *_map, struct perf_mmap_param *_mp,
+ int output, int cpu)
{
- int cpu, thread;
- int nr_cpus = cpu_map__nr(evlist->cpus);
- int nr_threads = thread_map__nr(evlist->threads);
+ struct mmap *map = container_of(_map, struct mmap, core);
+ struct mmap_params *mp = container_of(_mp, struct mmap_params, core);
- pr_debug2("perf event ring buffer mmapped per cpu\n");
- for (cpu = 0; cpu < nr_cpus; cpu++) {
- int output = -1;
- int output_overwrite = -1;
-
- auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, cpu,
- true);
-
- for (thread = 0; thread < nr_threads; thread++) {
- if (perf_evlist__mmap_per_evsel(evlist, cpu, mp, cpu,
- thread, &output, &output_overwrite))
- goto out_unmap;
- }
- }
-
- return 0;
-
-out_unmap:
- perf_evlist__munmap_nofree(evlist);
- return -1;
-}
-
-static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist,
- struct mmap_params *mp)
-{
- int thread;
- int nr_threads = thread_map__nr(evlist->threads);
-
- pr_debug2("perf event ring buffer mmapped per thread\n");
- for (thread = 0; thread < nr_threads; thread++) {
- int output = -1;
- int output_overwrite = -1;
-
- auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, thread,
- false);
-
- if (perf_evlist__mmap_per_evsel(evlist, thread, mp, 0, thread,
- &output, &output_overwrite))
- goto out_unmap;
- }
-
- return 0;
-
-out_unmap:
- perf_evlist__munmap_nofree(evlist);
- return -1;
+ return mmap__mmap(map, mp, output, cpu);
}
unsigned long perf_event_mlock_kb_in_pages(void)
@@ -921,7 +777,7 @@
return pages;
}
-size_t perf_evlist__mmap_size(unsigned long pages)
+size_t evlist__mmap_size(unsigned long pages)
{
if (pages == UINT_MAX)
pages = perf_event_mlock_kb_in_pages();
@@ -1004,7 +860,7 @@
}
/**
- * perf_evlist__mmap_ex - Create mmaps to receive events.
+ * evlist__mmap_ex - Create mmaps to receive events.
* @evlist: list of events
* @pages: map length in pages
* @overwrite: overwrite older events?
@@ -1012,7 +868,7 @@
* @auxtrace_overwrite - overwrite older auxtrace data?
*
* If @overwrite is %false the user needs to signal event consumption using
- * perf_mmap__write_tail(). Using perf_evlist__mmap_read() does this
+ * perf_mmap__write_tail(). Using evlist__mmap_read() does this
* automatically.
*
* Similarly, if @auxtrace_overwrite is %false the user needs to signal data
@@ -1020,58 +876,47 @@
*
* Return: %0 on success, negative error code otherwise.
*/
-int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages,
+int evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
unsigned int auxtrace_pages,
- bool auxtrace_overwrite)
+ bool auxtrace_overwrite, int nr_cblocks, int affinity, int flush,
+ int comp_level)
{
- struct perf_evsel *evsel;
- const struct cpu_map *cpus = evlist->cpus;
- const struct thread_map *threads = evlist->threads;
/*
* Delay setting mp.prot: set it before calling perf_mmap__mmap.
* Its value is decided by evsel's write_backward.
* So &mp should not be passed through const pointer.
*/
- struct mmap_params mp;
+ struct mmap_params mp = {
+ .nr_cblocks = nr_cblocks,
+ .affinity = affinity,
+ .flush = flush,
+ .comp_level = comp_level
+ };
+ struct perf_evlist_mmap_ops ops = {
+ .idx = perf_evlist__mmap_cb_idx,
+ .get = perf_evlist__mmap_cb_get,
+ .mmap = perf_evlist__mmap_cb_mmap,
+ };
- if (!evlist->mmap)
- evlist->mmap = perf_evlist__alloc_mmap(evlist, false);
- if (!evlist->mmap)
- return -ENOMEM;
+ evlist->core.mmap_len = evlist__mmap_size(pages);
+ pr_debug("mmap size %zuB\n", evlist->core.mmap_len);
- if (evlist->pollfd.entries == NULL && perf_evlist__alloc_pollfd(evlist) < 0)
- return -ENOMEM;
-
- evlist->mmap_len = perf_evlist__mmap_size(pages);
- pr_debug("mmap size %zuB\n", evlist->mmap_len);
- mp.mask = evlist->mmap_len - page_size - 1;
-
- auxtrace_mmap_params__init(&mp.auxtrace_mp, evlist->mmap_len,
+ auxtrace_mmap_params__init(&mp.auxtrace_mp, evlist->core.mmap_len,
auxtrace_pages, auxtrace_overwrite);
- evlist__for_each_entry(evlist, evsel) {
- if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
- evsel->sample_id == NULL &&
- perf_evsel__alloc_id(evsel, cpu_map__nr(cpus), threads->nr) < 0)
- return -ENOMEM;
- }
-
- if (cpu_map__empty(cpus))
- return perf_evlist__mmap_per_thread(evlist, &mp);
-
- return perf_evlist__mmap_per_cpu(evlist, &mp);
+ return perf_evlist__mmap_ops(&evlist->core, &ops, &mp.core);
}
-int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages)
+int evlist__mmap(struct evlist *evlist, unsigned int pages)
{
- return perf_evlist__mmap_ex(evlist, pages, 0, false);
+ return evlist__mmap_ex(evlist, pages, 0, false, 0, PERF_AFFINITY_SYS, 1, 0);
}
-int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
+int perf_evlist__create_maps(struct evlist *evlist, struct target *target)
{
bool all_threads = (target->per_thread && target->system_wide);
- struct cpu_map *cpus;
- struct thread_map *threads;
+ struct perf_cpu_map *cpus;
+ struct perf_thread_map *threads;
/*
* If specify '-a' and '--per-thread' to perf record, perf record
@@ -1098,68 +943,49 @@
return -1;
if (target__uses_dummy_map(target))
- cpus = cpu_map__dummy_new();
+ cpus = perf_cpu_map__dummy_new();
else
- cpus = cpu_map__new(target->cpu_list);
+ cpus = perf_cpu_map__new(target->cpu_list);
if (!cpus)
goto out_delete_threads;
- evlist->has_user_cpus = !!target->cpu_list;
+ evlist->core.has_user_cpus = !!target->cpu_list;
- perf_evlist__set_maps(evlist, cpus, threads);
+ perf_evlist__set_maps(&evlist->core, cpus, threads);
+
+ /* as evlist now has references, put count here */
+ perf_cpu_map__put(cpus);
+ perf_thread_map__put(threads);
return 0;
out_delete_threads:
- thread_map__put(threads);
+ perf_thread_map__put(threads);
return -1;
}
-void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus,
- struct thread_map *threads)
-{
- /*
- * Allow for the possibility that one or another of the maps isn't being
- * changed i.e. don't put it. Note we are assuming the maps that are
- * being applied are brand new and evlist is taking ownership of the
- * original reference count of 1. If that is not the case it is up to
- * the caller to increase the reference count.
- */
- if (cpus != evlist->cpus) {
- cpu_map__put(evlist->cpus);
- evlist->cpus = cpu_map__get(cpus);
- }
-
- if (threads != evlist->threads) {
- thread_map__put(evlist->threads);
- evlist->threads = thread_map__get(threads);
- }
-
- perf_evlist__propagate_maps(evlist);
-}
-
-void __perf_evlist__set_sample_bit(struct perf_evlist *evlist,
+void __perf_evlist__set_sample_bit(struct evlist *evlist,
enum perf_event_sample_format bit)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel)
- __perf_evsel__set_sample_bit(evsel, bit);
+ __evsel__set_sample_bit(evsel, bit);
}
-void __perf_evlist__reset_sample_bit(struct perf_evlist *evlist,
+void __perf_evlist__reset_sample_bit(struct evlist *evlist,
enum perf_event_sample_format bit)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel)
- __perf_evsel__reset_sample_bit(evsel, bit);
+ __evsel__reset_sample_bit(evsel, bit);
}
-int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel)
+int perf_evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
int err = 0;
evlist__for_each_entry(evlist, evsel) {
@@ -1170,7 +996,7 @@
* filters only work for tracepoint event, which doesn't have cpu limit.
* So evlist and evsel should always be same.
*/
- err = perf_evsel__apply_filter(evsel, evsel->filter);
+ err = perf_evsel__apply_filter(&evsel->core, evsel->filter);
if (err) {
*err_evsel = evsel;
break;
@@ -1180,16 +1006,19 @@
return err;
}
-int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter)
+int perf_evlist__set_tp_filter(struct evlist *evlist, const char *filter)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
int err = 0;
+ if (filter == NULL)
+ return -1;
+
evlist__for_each_entry(evlist, evsel) {
- if (evsel->attr.type != PERF_TYPE_TRACEPOINT)
+ if (evsel->core.attr.type != PERF_TYPE_TRACEPOINT)
continue;
- err = perf_evsel__set_filter(evsel, filter);
+ err = evsel__set_filter(evsel, filter);
if (err)
break;
}
@@ -1197,16 +1026,35 @@
return err;
}
-int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids)
+int perf_evlist__append_tp_filter(struct evlist *evlist, const char *filter)
+{
+ struct evsel *evsel;
+ int err = 0;
+
+ if (filter == NULL)
+ return -1;
+
+ evlist__for_each_entry(evlist, evsel) {
+ if (evsel->core.attr.type != PERF_TYPE_TRACEPOINT)
+ continue;
+
+ err = evsel__append_tp_filter(evsel, filter);
+ if (err)
+ break;
+ }
+
+ return err;
+}
+
+char *asprintf__tp_filter_pids(size_t npids, pid_t *pids)
{
char *filter;
- int ret = -1;
size_t i;
for (i = 0; i < npids; ++i) {
if (i == 0) {
if (asprintf(&filter, "common_pid != %d", pids[i]) < 0)
- return -1;
+ return NULL;
} else {
char *tmp;
@@ -1218,22 +1066,45 @@
}
}
- ret = perf_evlist__set_filter(evlist, filter);
+ return filter;
out_free:
+ free(filter);
+ return NULL;
+}
+
+int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids)
+{
+ char *filter = asprintf__tp_filter_pids(npids, pids);
+ int ret = perf_evlist__set_tp_filter(evlist, filter);
+
free(filter);
return ret;
}
-int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid)
+int perf_evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid)
{
- return perf_evlist__set_filter_pids(evlist, 1, &pid);
+ return perf_evlist__set_tp_filter_pids(evlist, 1, &pid);
}
-bool perf_evlist__valid_sample_type(struct perf_evlist *evlist)
+int perf_evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids)
{
- struct perf_evsel *pos;
+ char *filter = asprintf__tp_filter_pids(npids, pids);
+ int ret = perf_evlist__append_tp_filter(evlist, filter);
- if (evlist->nr_entries == 1)
+ free(filter);
+ return ret;
+}
+
+int perf_evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid)
+{
+ return perf_evlist__append_tp_filter_pids(evlist, 1, &pid);
+}
+
+bool evlist__valid_sample_type(struct evlist *evlist)
+{
+ struct evsel *pos;
+
+ if (evlist->core.nr_entries == 1)
return true;
if (evlist->id_pos < 0 || evlist->is_pos < 0)
@@ -1248,44 +1119,46 @@
return true;
}
-u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist)
+u64 __evlist__combined_sample_type(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
if (evlist->combined_sample_type)
return evlist->combined_sample_type;
evlist__for_each_entry(evlist, evsel)
- evlist->combined_sample_type |= evsel->attr.sample_type;
+ evlist->combined_sample_type |= evsel->core.attr.sample_type;
return evlist->combined_sample_type;
}
-u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist)
+u64 evlist__combined_sample_type(struct evlist *evlist)
{
evlist->combined_sample_type = 0;
- return __perf_evlist__combined_sample_type(evlist);
+ return __evlist__combined_sample_type(evlist);
}
-u64 perf_evlist__combined_branch_type(struct perf_evlist *evlist)
+u64 evlist__combined_branch_type(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
u64 branch_type = 0;
evlist__for_each_entry(evlist, evsel)
- branch_type |= evsel->attr.branch_sample_type;
+ branch_type |= evsel->core.attr.branch_sample_type;
return branch_type;
}
-bool perf_evlist__valid_read_format(struct perf_evlist *evlist)
+bool perf_evlist__valid_read_format(struct evlist *evlist)
{
- struct perf_evsel *first = perf_evlist__first(evlist), *pos = first;
- u64 read_format = first->attr.read_format;
- u64 sample_type = first->attr.sample_type;
+ struct evsel *first = evlist__first(evlist), *pos = first;
+ u64 read_format = first->core.attr.read_format;
+ u64 sample_type = first->core.attr.sample_type;
evlist__for_each_entry(evlist, pos) {
- if (read_format != pos->attr.read_format)
- return false;
+ if (read_format != pos->core.attr.read_format) {
+ pr_debug("Read format differs %#" PRIx64 " vs %#" PRIx64 "\n",
+ read_format, (u64)pos->core.attr.read_format);
+ }
}
/* PERF_SAMPLE_READ imples PERF_FORMAT_ID. */
@@ -1297,23 +1170,17 @@
return true;
}
-u64 perf_evlist__read_format(struct perf_evlist *evlist)
+u16 perf_evlist__id_hdr_size(struct evlist *evlist)
{
- struct perf_evsel *first = perf_evlist__first(evlist);
- return first->attr.read_format;
-}
-
-u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist)
-{
- struct perf_evsel *first = perf_evlist__first(evlist);
+ struct evsel *first = evlist__first(evlist);
struct perf_sample *data;
u64 sample_type;
u16 size = 0;
- if (!first->attr.sample_id_all)
+ if (!first->core.attr.sample_id_all)
goto out;
- sample_type = first->attr.sample_type;
+ sample_type = first->core.attr.sample_type;
if (sample_type & PERF_SAMPLE_TID)
size += sizeof(data->tid) * 2;
@@ -1336,42 +1203,68 @@
return size;
}
-bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist)
+bool evlist__valid_sample_id_all(struct evlist *evlist)
{
- struct perf_evsel *first = perf_evlist__first(evlist), *pos = first;
+ struct evsel *first = evlist__first(evlist), *pos = first;
evlist__for_each_entry_continue(evlist, pos) {
- if (first->attr.sample_id_all != pos->attr.sample_id_all)
+ if (first->core.attr.sample_id_all != pos->core.attr.sample_id_all)
return false;
}
return true;
}
-bool perf_evlist__sample_id_all(struct perf_evlist *evlist)
+bool evlist__sample_id_all(struct evlist *evlist)
{
- struct perf_evsel *first = perf_evlist__first(evlist);
- return first->attr.sample_id_all;
+ struct evsel *first = evlist__first(evlist);
+ return first->core.attr.sample_id_all;
}
-void perf_evlist__set_selected(struct perf_evlist *evlist,
- struct perf_evsel *evsel)
+void perf_evlist__set_selected(struct evlist *evlist,
+ struct evsel *evsel)
{
evlist->selected = evsel;
}
-void perf_evlist__close(struct perf_evlist *evlist)
+void evlist__close(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
+ struct affinity affinity;
+ int cpu, i;
- evlist__for_each_entry_reverse(evlist, evsel)
- perf_evsel__close(evsel);
+ /*
+ * With perf record core.cpus is usually NULL.
+ * Use the old method to handle this for now.
+ */
+ if (!evlist->core.cpus) {
+ evlist__for_each_entry_reverse(evlist, evsel)
+ evsel__close(evsel);
+ return;
+ }
+
+ if (affinity__setup(&affinity) < 0)
+ return;
+ evlist__for_each_cpu(evlist, i, cpu) {
+ affinity__set(&affinity, cpu);
+
+ evlist__for_each_entry_reverse(evlist, evsel) {
+ if (evsel__cpu_iter_skip(evsel, cpu))
+ continue;
+ perf_evsel__close_cpu(&evsel->core, evsel->cpu_iter - 1);
+ }
+ }
+ affinity__cleanup(&affinity);
+ evlist__for_each_entry_reverse(evlist, evsel) {
+ perf_evsel__free_fd(&evsel->core);
+ perf_evsel__free_id(&evsel->core);
+ }
}
-static int perf_evlist__create_syswide_maps(struct perf_evlist *evlist)
+static int perf_evlist__create_syswide_maps(struct evlist *evlist)
{
- struct cpu_map *cpus;
- struct thread_map *threads;
+ struct perf_cpu_map *cpus;
+ struct perf_thread_map *threads;
int err = -ENOMEM;
/*
@@ -1383,32 +1276,33 @@
* error, and we may not want to do that fallback to a
* default cpu identity map :-\
*/
- cpus = cpu_map__new(NULL);
+ cpus = perf_cpu_map__new(NULL);
if (!cpus)
goto out;
- threads = thread_map__new_dummy();
+ threads = perf_thread_map__new_dummy();
if (!threads)
goto out_put;
- perf_evlist__set_maps(evlist, cpus, threads);
+ perf_evlist__set_maps(&evlist->core, cpus, threads);
+
+ perf_thread_map__put(threads);
+out_put:
+ perf_cpu_map__put(cpus);
out:
return err;
-out_put:
- cpu_map__put(cpus);
- goto out;
}
-int perf_evlist__open(struct perf_evlist *evlist)
+int evlist__open(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
int err;
/*
* Default: one fd per CPU, all threads, aka systemwide
* as sys_perf_event_open(cpu = -1, thread = -1) is EINVAL
*/
- if (evlist->threads == NULL && evlist->cpus == NULL) {
+ if (evlist->core.threads == NULL && evlist->core.cpus == NULL) {
err = perf_evlist__create_syswide_maps(evlist);
if (err < 0)
goto out_err;
@@ -1417,19 +1311,19 @@
perf_evlist__update_id_pos(evlist);
evlist__for_each_entry(evlist, evsel) {
- err = perf_evsel__open(evsel, evsel->cpus, evsel->threads);
+ err = evsel__open(evsel, evsel->core.cpus, evsel->core.threads);
if (err < 0)
goto out_err;
}
return 0;
out_err:
- perf_evlist__close(evlist);
+ evlist__close(evlist);
errno = -err;
return err;
}
-int perf_evlist__prepare_workload(struct perf_evlist *evlist, struct target *target,
+int perf_evlist__prepare_workload(struct evlist *evlist, struct target *target,
const char *argv[], bool pipe_output,
void (*exec_error)(int signo, siginfo_t *info, void *ucontext))
{
@@ -1511,12 +1405,12 @@
}
if (target__none(target)) {
- if (evlist->threads == NULL) {
+ if (evlist->core.threads == NULL) {
fprintf(stderr, "FATAL: evlist->threads need to be set at this point (%s:%d).\n",
__func__, __LINE__);
goto out_close_pipes;
}
- thread_map__set_pid(evlist->threads, 0, evlist->workload.pid);
+ perf_thread_map__set_pid(evlist->core.threads, 0, evlist->workload.pid);
}
close(child_ready_pipe[1]);
@@ -1543,7 +1437,7 @@
return -1;
}
-int perf_evlist__start_workload(struct perf_evlist *evlist)
+int perf_evlist__start_workload(struct evlist *evlist)
{
if (evlist->workload.cork_fd > 0) {
char bf = 0;
@@ -1562,42 +1456,28 @@
return 0;
}
-int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
+int perf_evlist__parse_sample(struct evlist *evlist, union perf_event *event,
struct perf_sample *sample)
{
- struct perf_evsel *evsel = perf_evlist__event2evsel(evlist, event);
+ struct evsel *evsel = perf_evlist__event2evsel(evlist, event);
if (!evsel)
return -EFAULT;
- return perf_evsel__parse_sample(evsel, event, sample);
+ return evsel__parse_sample(evsel, event, sample);
}
-int perf_evlist__parse_sample_timestamp(struct perf_evlist *evlist,
+int perf_evlist__parse_sample_timestamp(struct evlist *evlist,
union perf_event *event,
u64 *timestamp)
{
- struct perf_evsel *evsel = perf_evlist__event2evsel(evlist, event);
+ struct evsel *evsel = perf_evlist__event2evsel(evlist, event);
if (!evsel)
return -EFAULT;
- return perf_evsel__parse_sample_timestamp(evsel, event, timestamp);
+ return evsel__parse_sample_timestamp(evsel, event, timestamp);
}
-size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp)
-{
- struct perf_evsel *evsel;
- size_t printed = 0;
-
- evlist__for_each_entry(evlist, evsel) {
- printed += fprintf(fp, "%s%s", evsel->idx ? ", " : "",
- perf_evsel__name(evsel));
- }
-
- return printed + fprintf(fp, "\n");
-}
-
-int perf_evlist__strerror_open(struct perf_evlist *evlist,
- int err, char *buf, size_t size)
+int evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size)
{
int printed, value;
char sbuf[STRERR_BUFSIZE], *emsg = str_error_r(err, sbuf, sizeof(sbuf));
@@ -1625,20 +1505,20 @@
"Hint:\tThe current value is %d.", value);
break;
case EINVAL: {
- struct perf_evsel *first = perf_evlist__first(evlist);
+ struct evsel *first = evlist__first(evlist);
int max_freq;
if (sysctl__read_int("kernel/perf_event_max_sample_rate", &max_freq) < 0)
goto out_default;
- if (first->attr.sample_freq < (u64)max_freq)
+ if (first->core.attr.sample_freq < (u64)max_freq)
goto out_default;
printed = scnprintf(buf, size,
"Error:\t%s.\n"
"Hint:\tCheck /proc/sys/kernel/perf_event_max_sample_rate.\n"
"Hint:\tThe current value is %d and %" PRIu64 " is being requested.",
- emsg, max_freq, first->attr.sample_freq);
+ emsg, max_freq, first->core.attr.sample_freq);
break;
}
default:
@@ -1650,10 +1530,10 @@
return 0;
}
-int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size)
+int evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size)
{
char sbuf[STRERR_BUFSIZE], *emsg = str_error_r(err, sbuf, sizeof(sbuf));
- int pages_attempted = evlist->mmap_len / 1024, pages_max_per_user, printed = 0;
+ int pages_attempted = evlist->core.mmap_len / 1024, pages_max_per_user, printed = 0;
switch (err) {
case EPERM:
@@ -1681,27 +1561,39 @@
return 0;
}
-void perf_evlist__to_front(struct perf_evlist *evlist,
- struct perf_evsel *move_evsel)
+void perf_evlist__to_front(struct evlist *evlist,
+ struct evsel *move_evsel)
{
- struct perf_evsel *evsel, *n;
+ struct evsel *evsel, *n;
LIST_HEAD(move);
- if (move_evsel == perf_evlist__first(evlist))
+ if (move_evsel == evlist__first(evlist))
return;
evlist__for_each_entry_safe(evlist, n, evsel) {
if (evsel->leader == move_evsel->leader)
- list_move_tail(&evsel->node, &move);
+ list_move_tail(&evsel->core.node, &move);
}
- list_splice(&move, &evlist->entries);
+ list_splice(&move, &evlist->core.entries);
}
-void perf_evlist__set_tracking_event(struct perf_evlist *evlist,
- struct perf_evsel *tracking_evsel)
+struct evsel *perf_evlist__get_tracking_event(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
+
+ evlist__for_each_entry(evlist, evsel) {
+ if (evsel->tracking)
+ return evsel;
+ }
+
+ return evlist__first(evlist);
+}
+
+void perf_evlist__set_tracking_event(struct evlist *evlist,
+ struct evsel *tracking_evsel)
+{
+ struct evsel *evsel;
if (tracking_evsel->tracking)
return;
@@ -1714,11 +1606,11 @@
tracking_evsel->tracking = true;
}
-struct perf_evsel *
-perf_evlist__find_evsel_by_str(struct perf_evlist *evlist,
+struct evsel *
+perf_evlist__find_evsel_by_str(struct evlist *evlist,
const char *str)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel) {
if (!evsel->name)
@@ -1730,7 +1622,7 @@
return NULL;
}
-void perf_evlist__toggle_bkw_mmap(struct perf_evlist *evlist,
+void perf_evlist__toggle_bkw_mmap(struct evlist *evlist,
enum bkw_mmap_state state)
{
enum bkw_mmap_state old_state = evlist->bkw_mmap_state;
@@ -1788,12 +1680,12 @@
return;
}
-bool perf_evlist__exclude_kernel(struct perf_evlist *evlist)
+bool perf_evlist__exclude_kernel(struct evlist *evlist)
{
- struct perf_evsel *evsel;
+ struct evsel *evsel;
evlist__for_each_entry(evlist, evsel) {
- if (!evsel->attr.exclude_kernel)
+ if (!evsel->core.attr.exclude_kernel)
return false;
}
@@ -1805,12 +1697,294 @@
* the group display. Set the artificial group and set the leader's
* forced_leader flag to notify the display code.
*/
-void perf_evlist__force_leader(struct perf_evlist *evlist)
+void perf_evlist__force_leader(struct evlist *evlist)
{
if (!evlist->nr_groups) {
- struct perf_evsel *leader = perf_evlist__first(evlist);
+ struct evsel *leader = evlist__first(evlist);
perf_evlist__set_leader(evlist);
leader->forced_leader = true;
}
}
+
+struct evsel *perf_evlist__reset_weak_group(struct evlist *evsel_list,
+ struct evsel *evsel,
+ bool close)
+{
+ struct evsel *c2, *leader;
+ bool is_open = true;
+
+ leader = evsel->leader;
+ pr_debug("Weak group for %s/%d failed\n",
+ leader->name, leader->core.nr_members);
+
+ /*
+ * for_each_group_member doesn't work here because it doesn't
+ * include the first entry.
+ */
+ evlist__for_each_entry(evsel_list, c2) {
+ if (c2 == evsel)
+ is_open = false;
+ if (c2->leader == leader) {
+ if (is_open && close)
+ perf_evsel__close(&c2->core);
+ c2->leader = c2;
+ c2->core.nr_members = 0;
+ /*
+ * Set this for all former members of the group
+ * to indicate they get reopened.
+ */
+ c2->reset_group = true;
+ }
+ }
+ return leader;
+}
+
+static int evlist__parse_control_fifo(const char *str, int *ctl_fd, int *ctl_fd_ack, bool *ctl_fd_close)
+{
+ char *s, *p;
+ int ret = 0, fd;
+
+ if (strncmp(str, "fifo:", 5))
+ return -EINVAL;
+
+ str += 5;
+ if (!*str || *str == ',')
+ return -EINVAL;
+
+ s = strdup(str);
+ if (!s)
+ return -ENOMEM;
+
+ p = strchr(s, ',');
+ if (p)
+ *p = '\0';
+
+ /*
+ * O_RDWR avoids POLLHUPs which is necessary to allow the other
+ * end of a FIFO to be repeatedly opened and closed.
+ */
+ fd = open(s, O_RDWR | O_NONBLOCK | O_CLOEXEC);
+ if (fd < 0) {
+ pr_err("Failed to open '%s'\n", s);
+ ret = -errno;
+ goto out_free;
+ }
+ *ctl_fd = fd;
+ *ctl_fd_close = true;
+
+ if (p && *++p) {
+ /* O_RDWR | O_NONBLOCK means the other end need not be open */
+ fd = open(p, O_RDWR | O_NONBLOCK | O_CLOEXEC);
+ if (fd < 0) {
+ pr_err("Failed to open '%s'\n", p);
+ ret = -errno;
+ goto out_free;
+ }
+ *ctl_fd_ack = fd;
+ }
+
+out_free:
+ free(s);
+ return ret;
+}
+
+int evlist__parse_control(const char *str, int *ctl_fd, int *ctl_fd_ack, bool *ctl_fd_close)
+{
+ char *comma = NULL, *endptr = NULL;
+
+ *ctl_fd_close = false;
+
+ if (strncmp(str, "fd:", 3))
+ return evlist__parse_control_fifo(str, ctl_fd, ctl_fd_ack, ctl_fd_close);
+
+ *ctl_fd = strtoul(&str[3], &endptr, 0);
+ if (endptr == &str[3])
+ return -EINVAL;
+
+ comma = strchr(str, ',');
+ if (comma) {
+ if (endptr != comma)
+ return -EINVAL;
+
+ *ctl_fd_ack = strtoul(comma + 1, &endptr, 0);
+ if (endptr == comma + 1 || *endptr != '\0')
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void evlist__close_control(int ctl_fd, int ctl_fd_ack, bool *ctl_fd_close)
+{
+ if (*ctl_fd_close) {
+ *ctl_fd_close = false;
+ close(ctl_fd);
+ if (ctl_fd_ack >= 0)
+ close(ctl_fd_ack);
+ }
+}
+
+int evlist__initialize_ctlfd(struct evlist *evlist, int fd, int ack)
+{
+ if (fd == -1) {
+ pr_debug("Control descriptor is not initialized\n");
+ return 0;
+ }
+
+ evlist->ctl_fd.pos = perf_evlist__add_pollfd(&evlist->core, fd, NULL, POLLIN,
+ fdarray_flag__nonfilterable);
+ if (evlist->ctl_fd.pos < 0) {
+ evlist->ctl_fd.pos = -1;
+ pr_err("Failed to add ctl fd entry: %m\n");
+ return -1;
+ }
+
+ evlist->ctl_fd.fd = fd;
+ evlist->ctl_fd.ack = ack;
+
+ return 0;
+}
+
+bool evlist__ctlfd_initialized(struct evlist *evlist)
+{
+ return evlist->ctl_fd.pos >= 0;
+}
+
+int evlist__finalize_ctlfd(struct evlist *evlist)
+{
+ struct pollfd *entries = evlist->core.pollfd.entries;
+
+ if (!evlist__ctlfd_initialized(evlist))
+ return 0;
+
+ entries[evlist->ctl_fd.pos].fd = -1;
+ entries[evlist->ctl_fd.pos].events = 0;
+ entries[evlist->ctl_fd.pos].revents = 0;
+
+ evlist->ctl_fd.pos = -1;
+ evlist->ctl_fd.ack = -1;
+ evlist->ctl_fd.fd = -1;
+
+ return 0;
+}
+
+static int evlist__ctlfd_recv(struct evlist *evlist, enum evlist_ctl_cmd *cmd,
+ char *cmd_data, size_t data_size)
+{
+ int err;
+ char c;
+ size_t bytes_read = 0;
+
+ *cmd = EVLIST_CTL_CMD_UNSUPPORTED;
+ memset(cmd_data, 0, data_size);
+ data_size--;
+
+ do {
+ err = read(evlist->ctl_fd.fd, &c, 1);
+ if (err > 0) {
+ if (c == '\n' || c == '\0')
+ break;
+ cmd_data[bytes_read++] = c;
+ if (bytes_read == data_size)
+ break;
+ continue;
+ } else if (err == -1) {
+ if (errno == EINTR)
+ continue;
+ if (errno == EAGAIN || errno == EWOULDBLOCK)
+ err = 0;
+ else
+ pr_err("Failed to read from ctlfd %d: %m\n", evlist->ctl_fd.fd);
+ }
+ break;
+ } while (1);
+
+ pr_debug("Message from ctl_fd: \"%s%s\"\n", cmd_data,
+ bytes_read == data_size ? "" : c == '\n' ? "\\n" : "\\0");
+
+ if (bytes_read > 0) {
+ if (!strncmp(cmd_data, EVLIST_CTL_CMD_ENABLE_TAG,
+ (sizeof(EVLIST_CTL_CMD_ENABLE_TAG)-1))) {
+ *cmd = EVLIST_CTL_CMD_ENABLE;
+ } else if (!strncmp(cmd_data, EVLIST_CTL_CMD_DISABLE_TAG,
+ (sizeof(EVLIST_CTL_CMD_DISABLE_TAG)-1))) {
+ *cmd = EVLIST_CTL_CMD_DISABLE;
+ } else if (!strncmp(cmd_data, EVLIST_CTL_CMD_SNAPSHOT_TAG,
+ (sizeof(EVLIST_CTL_CMD_SNAPSHOT_TAG)-1))) {
+ *cmd = EVLIST_CTL_CMD_SNAPSHOT;
+ pr_debug("is snapshot\n");
+ }
+ }
+
+ return bytes_read ? (int)bytes_read : err;
+}
+
+int evlist__ctlfd_ack(struct evlist *evlist)
+{
+ int err;
+
+ if (evlist->ctl_fd.ack == -1)
+ return 0;
+
+ err = write(evlist->ctl_fd.ack, EVLIST_CTL_CMD_ACK_TAG,
+ sizeof(EVLIST_CTL_CMD_ACK_TAG));
+ if (err == -1)
+ pr_err("failed to write to ctl_ack_fd %d: %m\n", evlist->ctl_fd.ack);
+
+ return err;
+}
+
+int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd)
+{
+ int err = 0;
+ char cmd_data[EVLIST_CTL_CMD_MAX_LEN];
+ int ctlfd_pos = evlist->ctl_fd.pos;
+ struct pollfd *entries = evlist->core.pollfd.entries;
+
+ if (!evlist__ctlfd_initialized(evlist) || !entries[ctlfd_pos].revents)
+ return 0;
+
+ if (entries[ctlfd_pos].revents & POLLIN) {
+ err = evlist__ctlfd_recv(evlist, cmd, cmd_data,
+ EVLIST_CTL_CMD_MAX_LEN);
+ if (err > 0) {
+ switch (*cmd) {
+ case EVLIST_CTL_CMD_ENABLE:
+ evlist__enable(evlist);
+ break;
+ case EVLIST_CTL_CMD_DISABLE:
+ evlist__disable(evlist);
+ break;
+ case EVLIST_CTL_CMD_SNAPSHOT:
+ break;
+ case EVLIST_CTL_CMD_ACK:
+ case EVLIST_CTL_CMD_UNSUPPORTED:
+ default:
+ pr_debug("ctlfd: unsupported %d\n", *cmd);
+ break;
+ }
+ if (!(*cmd == EVLIST_CTL_CMD_ACK || *cmd == EVLIST_CTL_CMD_UNSUPPORTED ||
+ *cmd == EVLIST_CTL_CMD_SNAPSHOT))
+ evlist__ctlfd_ack(evlist);
+ }
+ }
+
+ if (entries[ctlfd_pos].revents & (POLLHUP | POLLERR))
+ evlist__finalize_ctlfd(evlist);
+ else
+ entries[ctlfd_pos].revents = 0;
+
+ return err;
+}
+
+struct evsel *evlist__find_evsel(struct evlist *evlist, int idx)
+{
+ struct evsel *evsel;
+
+ evlist__for_each_entry(evlist, evsel) {
+ if (evsel->idx == idx)
+ return evsel;
+ }
+ return NULL;
+}
--
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