diff options
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 162 |
1 files changed, 138 insertions, 24 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 668d2a9ef0f4..a474ede17cd6 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1,10 +1,9 @@ +// 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> @@ -19,6 +18,7 @@ #include "debug.h" #include "units.h" #include "asm/bug.h" +#include "bpf-event.h" #include <signal.h> #include <unistd.h> @@ -34,6 +34,10 @@ #include <linux/log2.h> #include <linux/err.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) @@ -226,20 +230,6 @@ void perf_evlist__set_leader(struct perf_evlist *evlist) } } -void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr) -{ - 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); @@ -1018,7 +1008,8 @@ int perf_evlist__parse_mmap_pages(const struct option *opt, const char *str, */ int perf_evlist__mmap_ex(struct perf_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; @@ -1028,7 +1019,8 @@ int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages, * 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 }; if (!evlist->mmap) evlist->mmap = perf_evlist__alloc_mmap(evlist, false); @@ -1060,7 +1052,7 @@ int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages, int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages) { - return perf_evlist__mmap_ex(evlist, pages, 0, false); + return perf_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) @@ -1176,7 +1168,7 @@ int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **e return err; } -int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) +int perf_evlist__set_tp_filter(struct perf_evlist *evlist, const char *filter) { struct perf_evsel *evsel; int err = 0; @@ -1193,7 +1185,7 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) return err; } -int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids) +int perf_evlist__set_tp_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids) { char *filter; int ret = -1; @@ -1214,15 +1206,15 @@ int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t } } - ret = perf_evlist__set_filter(evlist, filter); + ret = perf_evlist__set_tp_filter(evlist, filter); out_free: 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 perf_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) @@ -1837,3 +1829,125 @@ struct perf_evsel *perf_evlist__reset_weak_group(struct perf_evlist *evsel_list, } return leader; } + +int perf_evlist__add_sb_event(struct perf_evlist **evlist, + struct perf_event_attr *attr, + perf_evsel__sb_cb_t cb, + void *data) +{ + struct perf_evsel *evsel; + bool new_evlist = (*evlist) == NULL; + + if (*evlist == NULL) + *evlist = perf_evlist__new(); + if (*evlist == NULL) + return -1; + + if (!attr->sample_id_all) { + pr_warning("enabling sample_id_all for all side band events\n"); + attr->sample_id_all = 1; + } + + evsel = perf_evsel__new_idx(attr, (*evlist)->nr_entries); + if (!evsel) + goto out_err; + + evsel->side_band.cb = cb; + evsel->side_band.data = data; + perf_evlist__add(*evlist, evsel); + return 0; + +out_err: + if (new_evlist) { + perf_evlist__delete(*evlist); + *evlist = NULL; + } + return -1; +} + +static void *perf_evlist__poll_thread(void *arg) +{ + struct perf_evlist *evlist = arg; + bool draining = false; + int i, done = 0; + + while (!done) { + bool got_data = false; + + if (evlist->thread.done) + draining = true; + + if (!draining) + perf_evlist__poll(evlist, 1000); + + for (i = 0; i < evlist->nr_mmaps; i++) { + struct perf_mmap *map = &evlist->mmap[i]; + union perf_event *event; + + if (perf_mmap__read_init(map)) + continue; + while ((event = perf_mmap__read_event(map)) != NULL) { + struct perf_evsel *evsel = perf_evlist__event2evsel(evlist, event); + + if (evsel && evsel->side_band.cb) + evsel->side_band.cb(event, evsel->side_band.data); + else + pr_warning("cannot locate proper evsel for the side band event\n"); + + perf_mmap__consume(map); + got_data = true; + } + perf_mmap__read_done(map); + } + + if (draining && !got_data) + break; + } + return NULL; +} + +int perf_evlist__start_sb_thread(struct perf_evlist *evlist, + struct target *target) +{ + struct perf_evsel *counter; + + if (!evlist) + return 0; + + if (perf_evlist__create_maps(evlist, target)) + goto out_delete_evlist; + + evlist__for_each_entry(evlist, counter) { + if (perf_evsel__open(counter, evlist->cpus, + evlist->threads) < 0) + goto out_delete_evlist; + } + + if (perf_evlist__mmap(evlist, UINT_MAX)) + goto out_delete_evlist; + + evlist__for_each_entry(evlist, counter) { + if (perf_evsel__enable(counter)) + goto out_delete_evlist; + } + + evlist->thread.done = 0; + if (pthread_create(&evlist->thread.th, NULL, perf_evlist__poll_thread, evlist)) + goto out_delete_evlist; + + return 0; + +out_delete_evlist: + perf_evlist__delete(evlist); + evlist = NULL; + return -1; +} + +void perf_evlist__stop_sb_thread(struct perf_evlist *evlist) +{ + if (!evlist) + return; + evlist->thread.done = 1; + pthread_join(evlist->thread.th, NULL); + perf_evlist__delete(evlist); +} |
