C++ (Cpp) open_kprobe_events Examples

Example #1

File: probe-file.c Project: 513855417/linux

int probe_file__open(int flag)
{
	int fd;

	if (flag & PF_FL_UPROBE)
		fd = open_uprobe_events(flag & PF_FL_RW);
	else
		fd = open_kprobe_events(flag & PF_FL_RW);
	if (fd < 0)
		print_open_warning(fd, flag & PF_FL_UPROBE);

	return fd;
}

Example #2

File: probe-file.c Project: 513855417/linux

int probe_file__open_both(int *kfd, int *ufd, int flag)
{
	if (!kfd || !ufd)
		return -EINVAL;

	*kfd = open_kprobe_events(flag & PF_FL_RW);
	*ufd = open_uprobe_events(flag & PF_FL_RW);
	if (*kfd < 0 && *ufd < 0) {
		print_both_open_warning(*kfd, *ufd);
		return *kfd;
	}

	return 0;
}

Example #3

File: probe-event.c Project: KaZoom/buildroot-linux-kernel-m3

/* List up current perf-probe events */
void show_perf_probe_events(void)
{
	int fd;
	struct probe_point pp;
	struct strlist *rawlist;
	struct str_node *ent;

	setup_pager();
	memset(&pp, 0, sizeof(pp));

	fd = open_kprobe_events(O_RDONLY, 0);
	rawlist = get_trace_kprobe_event_rawlist(fd);
	close(fd);

	strlist__for_each(ent, rawlist) {
		parse_trace_kprobe_event(ent->s, &pp);
		/* Synthesize only event probe point */
		synthesize_perf_probe_point(&pp);
		/* Show an event */
		show_perf_probe_event(pp.event, pp.probes[0], &pp);
		clear_probe_point(&pp);
	}