diff options
| -rw-r--r-- | tools/perf/util/Build | 1 | ||||
| -rw-r--r-- | tools/perf/util/evsel.c | 21 | ||||
| -rw-r--r-- | tools/perf/util/parse-events.c | 147 | ||||
| -rw-r--r-- | tools/perf/util/tp_pmu.c | 95 | ||||
| -rw-r--r-- | tools/perf/util/tp_pmu.h | 12 |
5 files changed, 170 insertions, 106 deletions
diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 12bc01c843b2..4959e7a990e4 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -88,6 +88,7 @@ perf-util-y += pmu-bison.o perf-util-y += drm_pmu.o perf-util-y += hwmon_pmu.o perf-util-y += tool_pmu.o +perf-util-y += tp_pmu.o perf-util-y += svghelper.o perf-util-y += trace-event-info.o perf-util-y += trace-event-scripting.o diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 3d27e9bdd66b..d264c143b592 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -60,6 +60,7 @@ #include "drm_pmu.h" #include "hwmon_pmu.h" #include "tool_pmu.h" +#include "tp_pmu.h" #include "rlimit.h" #include "../perf-sys.h" #include "util/parse-branch-options.h" @@ -572,24 +573,6 @@ out_err: return NULL; } -static int trace_event__id(const char *sys, const char *name) -{ - char *tp_dir = get_events_file(sys); - char path[PATH_MAX]; - int id, err; - - if (!tp_dir) - return -1; - - scnprintf(path, PATH_MAX, "%s/%s/id", tp_dir, name); - put_events_file(tp_dir); - err = filename__read_int(path, &id); - if (err) - return err; - - return id; -} - /* * Returns pointer with encoded error via <linux/err.h> interface. */ @@ -623,7 +606,7 @@ struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx, bool event_attr_init(&attr); if (format) { - id = trace_event__id(sys, name); + id = tp_pmu__id(sys, name); if (id < 0) { err = id; goto out_free; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 74e0822ad82d..8282ddf68b98 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -17,13 +17,12 @@ #include "string2.h" #include "strbuf.h" #include "debug.h" -#include <api/fs/tracing_path.h> -#include <api/io_dir.h> #include <perf/cpumap.h> #include <util/parse-events-bison.h> #include <util/parse-events-flex.h> #include "pmu.h" #include "pmus.h" +#include "tp_pmu.h" #include "asm/bug.h" #include "ui/ui.h" #include "util/parse-branch-options.h" @@ -33,6 +32,7 @@ #include "util/stat.h" #include "util/util.h" #include "tracepoint.h" +#include <api/fs/tracing_path.h> #define MAX_NAME_LEN 100 @@ -599,105 +599,82 @@ static int add_tracepoint(struct parse_events_state *parse_state, return 0; } -static int add_tracepoint_multi_event(struct parse_events_state *parse_state, - struct list_head *list, - const char *sys_name, const char *evt_name, - struct parse_events_error *err, - struct parse_events_terms *head_config, YYLTYPE *loc) -{ - char *evt_path; - struct io_dirent64 *evt_ent; - struct io_dir evt_dir; - int ret = 0, found = 0; - - evt_path = get_events_file(sys_name); - if (!evt_path) { - tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); - return -1; - } - io_dir__init(&evt_dir, open(evt_path, O_CLOEXEC | O_DIRECTORY | O_RDONLY)); - if (evt_dir.dirfd < 0) { - put_events_file(evt_path); - tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); - return -1; - } +struct add_tracepoint_multi_args { + struct parse_events_state *parse_state; + struct list_head *list; + const char *sys_glob; + const char *evt_glob; + struct parse_events_error *err; + struct parse_events_terms *head_config; + YYLTYPE *loc; + int found; +}; - while (!ret && (evt_ent = io_dir__readdir(&evt_dir))) { - if (!strcmp(evt_ent->d_name, ".") - || !strcmp(evt_ent->d_name, "..") - || !strcmp(evt_ent->d_name, "enable") - || !strcmp(evt_ent->d_name, "filter")) - continue; +static int add_tracepoint_multi_event_cb(void *state, const char *sys_name, const char *evt_name) +{ + struct add_tracepoint_multi_args *args = state; + int ret; - if (!strglobmatch(evt_ent->d_name, evt_name)) - continue; + if (!strglobmatch(evt_name, args->evt_glob)) + return 0; - found++; + args->found++; + ret = add_tracepoint(args->parse_state, args->list, sys_name, evt_name, + args->err, args->head_config, args->loc); - ret = add_tracepoint(parse_state, list, sys_name, evt_ent->d_name, - err, head_config, loc); - } + return ret; +} - if (!found) { - tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column); - ret = -1; +static int add_tracepoint_multi_event(struct add_tracepoint_multi_args *args, const char *sys_name) +{ + if (strpbrk(args->evt_glob, "*?") == NULL) { + /* Not a glob. */ + args->found++; + return add_tracepoint(args->parse_state, args->list, sys_name, args->evt_glob, + args->err, args->head_config, args->loc); } - put_events_file(evt_path); - close(evt_dir.dirfd); - return ret; + return tp_pmu__for_each_tp_event(sys_name, args, add_tracepoint_multi_event_cb); } -static int add_tracepoint_event(struct parse_events_state *parse_state, - struct list_head *list, - const char *sys_name, const char *evt_name, - struct parse_events_error *err, - struct parse_events_terms *head_config, YYLTYPE *loc) +static int add_tracepoint_multi_sys_cb(void *state, const char *sys_name) { - return strpbrk(evt_name, "*?") ? - add_tracepoint_multi_event(parse_state, list, sys_name, evt_name, - err, head_config, loc) : - add_tracepoint(parse_state, list, sys_name, evt_name, - err, head_config, loc); + struct add_tracepoint_multi_args *args = state; + + if (!strglobmatch(sys_name, args->sys_glob)) + return 0; + + return add_tracepoint_multi_event(args, sys_name); } static int add_tracepoint_multi_sys(struct parse_events_state *parse_state, struct list_head *list, - const char *sys_name, const char *evt_name, + const char *sys_glob, const char *evt_glob, struct parse_events_error *err, struct parse_events_terms *head_config, YYLTYPE *loc) { - struct io_dirent64 *events_ent; - struct io_dir events_dir; - int ret = 0; - char *events_dir_path = get_tracing_file("events"); + struct add_tracepoint_multi_args args = { + .parse_state = parse_state, + .list = list, + .sys_glob = sys_glob, + .evt_glob = evt_glob, + .err = err, + .head_config = head_config, + .loc = loc, + .found = 0, + }; + int ret; - if (!events_dir_path) { - tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); - return -1; + if (strpbrk(sys_glob, "*?") == NULL) { + /* Not a glob. */ + ret = add_tracepoint_multi_event(&args, sys_glob); + } else { + ret = tp_pmu__for_each_tp_sys(&args, add_tracepoint_multi_sys_cb); } - io_dir__init(&events_dir, open(events_dir_path, O_CLOEXEC | O_DIRECTORY | O_RDONLY)); - put_events_file(events_dir_path); - if (events_dir.dirfd < 0) { - tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); - return -1; + if (args.found == 0) { + tracepoint_error(err, ENOENT, sys_glob, evt_glob, loc->first_column); + return -ENOENT; } - - while (!ret && (events_ent = io_dir__readdir(&events_dir))) { - if (!strcmp(events_ent->d_name, ".") - || !strcmp(events_ent->d_name, "..") - || !strcmp(events_ent->d_name, "enable") - || !strcmp(events_ent->d_name, "header_event") - || !strcmp(events_ent->d_name, "header_page")) - continue; - - if (!strglobmatch(events_ent->d_name, sys_name)) - continue; - - ret = add_tracepoint_event(parse_state, list, events_ent->d_name, - evt_name, err, head_config, loc); - } - close(events_dir.dirfd); return ret; } @@ -1406,12 +1383,8 @@ int parse_events_add_tracepoint(struct parse_events_state *parse_state, return -EINVAL; } - if (strpbrk(sys, "*?")) - return add_tracepoint_multi_sys(parse_state, list, sys, event, - err, head_config, loc); - else - return add_tracepoint_event(parse_state, list, sys, event, - err, head_config, loc); + return add_tracepoint_multi_sys(parse_state, list, sys, event, + err, head_config, loc); } static int __parse_events_add_numeric(struct parse_events_state *parse_state, diff --git a/tools/perf/util/tp_pmu.c b/tools/perf/util/tp_pmu.c new file mode 100644 index 000000000000..42bd967a4530 --- /dev/null +++ b/tools/perf/util/tp_pmu.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +#include "tp_pmu.h" +#include <api/fs/fs.h> +#include <api/fs/tracing_path.h> +#include <api/io_dir.h> +#include <linux/kernel.h> +#include <errno.h> +#include <string.h> + +int tp_pmu__id(const char *sys, const char *name) +{ + char *tp_dir = get_events_file(sys); + char path[PATH_MAX]; + int id, err; + + if (!tp_dir) + return -1; + + scnprintf(path, PATH_MAX, "%s/%s/id", tp_dir, name); + put_events_file(tp_dir); + err = filename__read_int(path, &id); + if (err) + return err; + + return id; +} + + +int tp_pmu__for_each_tp_event(const char *sys, void *state, tp_event_callback cb) +{ + char *evt_path; + struct io_dirent64 *evt_ent; + struct io_dir evt_dir; + int ret = 0; + + evt_path = get_events_file(sys); + if (!evt_path) + return -errno; + + io_dir__init(&evt_dir, open(evt_path, O_CLOEXEC | O_DIRECTORY | O_RDONLY)); + if (evt_dir.dirfd < 0) { + ret = -errno; + put_events_file(evt_path); + return ret; + } + put_events_file(evt_path); + + while (!ret && (evt_ent = io_dir__readdir(&evt_dir))) { + if (!strcmp(evt_ent->d_name, ".") + || !strcmp(evt_ent->d_name, "..") + || !strcmp(evt_ent->d_name, "enable") + || !strcmp(evt_ent->d_name, "filter")) + continue; + + ret = cb(state, sys, evt_ent->d_name); + if (ret) + break; + } + close(evt_dir.dirfd); + return ret; +} + +int tp_pmu__for_each_tp_sys(void *state, tp_sys_callback cb) +{ + struct io_dirent64 *events_ent; + struct io_dir events_dir; + int ret = 0; + char *events_dir_path = get_tracing_file("events"); + + if (!events_dir_path) + return -errno; + + io_dir__init(&events_dir, open(events_dir_path, O_CLOEXEC | O_DIRECTORY | O_RDONLY)); + if (events_dir.dirfd < 0) { + ret = -errno; + put_events_file(events_dir_path); + return ret; + } + put_events_file(events_dir_path); + + while (!ret && (events_ent = io_dir__readdir(&events_dir))) { + if (!strcmp(events_ent->d_name, ".") || + !strcmp(events_ent->d_name, "..") || + !strcmp(events_ent->d_name, "enable") || + !strcmp(events_ent->d_name, "header_event") || + !strcmp(events_ent->d_name, "header_page")) + continue; + + ret = cb(state, events_ent->d_name); + if (ret) + break; + } + close(events_dir.dirfd); + return ret; +} diff --git a/tools/perf/util/tp_pmu.h b/tools/perf/util/tp_pmu.h new file mode 100644 index 000000000000..49537303bd73 --- /dev/null +++ b/tools/perf/util/tp_pmu.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ +#ifndef __TP_PMU_H +#define __TP_PMU_H + +typedef int (*tp_sys_callback)(void *state, const char *sys_name); +typedef int (*tp_event_callback)(void *state, const char *sys_name, const char *evt_name); + +int tp_pmu__id(const char *sys, const char *name); +int tp_pmu__for_each_tp_event(const char *sys, void *state, tp_event_callback cb); +int tp_pmu__for_each_tp_sys(void *state, tp_sys_callback cb); + +#endif /* __TP_PMU_H */ |