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charset=us-ascii Content-Disposition: inline In-Reply-To: <20230331202949.810326-2-namhyung@kernel.org> X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Em Fri, Mar 31, 2023 at 01:29:41PM -0700, Namhyung Kim escreveu: > Signed-off-by: Namhyung Kim > --- > tools/perf/util/print-events.c | 26 ++++++++++++++++++++------ > 1 file changed, 20 insertions(+), 6 deletions(-) Add to add this to fix on Alma Linux 8, and scandirat isn't being found on musl libc (Alpine Linux), probably we'll need some scaffolding... - Arnaldo diff --git a/tools/perf/util/print-events.c b/tools/perf/util/print-events.c index 26a7e017c9284c01..28aa0b9300253d0a 100644 --- a/tools/perf/util/print-events.c +++ b/tools/perf/util/print-events.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include > diff --git a/tools/perf/util/print-events.c b/tools/perf/util/print-events.c > index 62e9ea7dcf40..26a7e017c928 100644 > --- a/tools/perf/util/print-events.c > +++ b/tools/perf/util/print-events.c > @@ -4,6 +4,7 @@ > #include > #include > #include > +#include > #include > > #include > @@ -59,12 +60,20 @@ static const struct event_symbol event_symbols_tool[PERF_TOOL_MAX] = { > void print_tracepoint_events(const struct print_callbacks *print_cb, void *print_state) > { > struct dirent **sys_namelist = NULL; > + char *events_path = get_tracing_file("events"); > int sys_items = tracing_events__scandir_alphasort(&sys_namelist); > + int events_fd = open(events_path, O_PATH); > + > + put_tracing_file(events_path); > + if (events_fd < 0) { > + printf("Error: failed to open tracing events directory\n"); > + return; > + } > > for (int i = 0; i < sys_items; i++) { > struct dirent *sys_dirent = sys_namelist[i]; > struct dirent **evt_namelist = NULL; > - char *dir_path; > + int dir_fd; > int evt_items; > > if (sys_dirent->d_type != DT_DIR || > @@ -72,22 +81,26 @@ void print_tracepoint_events(const struct print_callbacks *print_cb, void *print > !strcmp(sys_dirent->d_name, "..")) > continue; > > - dir_path = get_events_file(sys_dirent->d_name); > - if (!dir_path) > + dir_fd = openat(events_fd, sys_dirent->d_name, O_PATH); > + if (dir_fd < 0) > continue; > > - evt_items = scandir(dir_path, &evt_namelist, NULL, alphasort); > + evt_items = scandirat(events_fd, sys_dirent->d_name, &evt_namelist, NULL, alphasort); > for (int j = 0; j < evt_items; j++) { > struct dirent *evt_dirent = evt_namelist[j]; > char evt_path[MAXPATHLEN]; > + int evt_fd; > > if (evt_dirent->d_type != DT_DIR || > !strcmp(evt_dirent->d_name, ".") || > !strcmp(evt_dirent->d_name, "..")) > continue; > > - if (tp_event_has_id(dir_path, evt_dirent) != 0) > + snprintf(evt_path, sizeof(evt_path), "%s/id", evt_dirent->d_name); > + evt_fd = openat(dir_fd, evt_path, O_RDONLY); > + if (evt_fd < 0) > continue; > + close(evt_fd); > > snprintf(evt_path, MAXPATHLEN, "%s:%s", > sys_dirent->d_name, evt_dirent->d_name); > @@ -103,10 +116,11 @@ void print_tracepoint_events(const struct print_callbacks *print_cb, void *print > /*long_desc=*/NULL, > /*encoding_desc=*/NULL); > } > - free(dir_path); > + close(dir_fd); > free(evt_namelist); > } > free(sys_namelist); > + close(events_fd); > } > > void print_sdt_events(const struct print_callbacks *print_cb, void *print_state) > -- > 2.40.0.348.gf938b09366-goog > -- - Arnaldo