mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-28 05:12:49 +00:00
9b7c7728f4
Move print_*_events functions out of parse-events.c into a new print-events.c. Move tracepoint code into tracepoint.c or trace-event-info.c (sole user). This reduces the dependencies of parse-events.c and makes it more amenable to being a library in the future. Remove some unnecessary definitions from parse-events.h. Fix a checkpatch.pl warning on using unsigned rather than unsigned int. Fix some line length warnings too. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20220729204217.250166-3-irogers@google.com [ Add include linux/stddef.h before perf_events.h for systems where __always_inline isn't pulled in before used, such as older Alpine Linux ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include "tracepoint.h"
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <sys/param.h>
|
|
#include <unistd.h>
|
|
|
|
#include <api/fs/tracing_path.h>
|
|
|
|
int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
|
|
{
|
|
char evt_path[MAXPATHLEN];
|
|
int fd;
|
|
|
|
snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
|
|
fd = open(evt_path, O_RDONLY);
|
|
if (fd < 0)
|
|
return -EINVAL;
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check whether event is in <debugfs_mount_point>/tracing/events
|
|
*/
|
|
int is_valid_tracepoint(const char *event_string)
|
|
{
|
|
DIR *sys_dir, *evt_dir;
|
|
struct dirent *sys_dirent, *evt_dirent;
|
|
char evt_path[MAXPATHLEN];
|
|
char *dir_path;
|
|
|
|
sys_dir = tracing_events__opendir();
|
|
if (!sys_dir)
|
|
return 0;
|
|
|
|
for_each_subsystem(sys_dir, sys_dirent) {
|
|
dir_path = get_events_file(sys_dirent->d_name);
|
|
if (!dir_path)
|
|
continue;
|
|
evt_dir = opendir(dir_path);
|
|
if (!evt_dir)
|
|
goto next;
|
|
|
|
for_each_event(dir_path, evt_dir, evt_dirent) {
|
|
snprintf(evt_path, MAXPATHLEN, "%s:%s",
|
|
sys_dirent->d_name, evt_dirent->d_name);
|
|
if (!strcmp(evt_path, event_string)) {
|
|
closedir(evt_dir);
|
|
closedir(sys_dir);
|
|
return 1;
|
|
}
|
|
}
|
|
closedir(evt_dir);
|
|
next:
|
|
put_events_file(dir_path);
|
|
}
|
|
closedir(sys_dir);
|
|
return 0;
|
|
}
|