kernel/trace/trace.c

587  * trace_find_filtered_pid - check if a pid exists in a filtered_pid list
615 	 * If filtered_no_pids is not empty, and the task's pid is listed
623 		!trace_find_filtered_pid(filtered_pids, task->pid)) ||
625 		 trace_find_filtered_pid(filtered_no_pids, task->pid));
637  * @task pid will be removed from the list, which would happen on exit
649 		if (!trace_find_filtered_pid(pid_list, self->pid))
655 		trace_pid_list_set(pid_list, task->pid);
657 		trace_pid_list_clear(pid_list, task->pid);
661  * trace_pid_next - Used for seq_file to get to the next pid of a pid_list
662  * @pid_list: The pid list to show
663  * @v: The last pid that was shown (+1 the actual pid to let zero be displayed)
669  * Returns the pid+1 as we want to display pid of zero, but NULL would
674 	long pid = (unsigned long)v;
679 	/* pid already is +1 of the actual previous bit */
680 	if (trace_pid_list_next(pid_list, pid, &next) < 0)
683 	pid = next;
685 	/* Return pid + 1 to allow zero to be represented */
686 	return (void *)(pid + 1);
690  * trace_pid_start - Used for seq_file to start reading pid lists
691  * @pid_list: The pid list to show
697  * Returns the pid+1 as we want to display pid of zero, but NULL would
702 	unsigned long pid;
709 	pid = first;
711 	/* Return pid + 1 so that zero can be the exit value */
712 	for (pid++; pid && l < *pos;
713 	     pid = (unsigned long)trace_pid_next(pid_list, (void *)pid, &l))
715 	return (void *)pid;
719  * trace_pid_show - show the current pid in seq_file processing
721  * @v: A void pointer of the pid (+1) value to display
724  * pid value.
728 	unsigned long pid = (unsigned long)v - 1;
730 	seq_printf(m, "%lu\n", pid);
748 	pid_t pid;
767 		ret = trace_pid_list_first(filtered_pids, &pid);
769 			trace_pid_list_set(pid_list, pid);
770 			ret = trace_pid_list_next(filtered_pids, pid + 1, &pid);
795 		pid = (pid_t)val;
797 		if (trace_pid_list_set(pid_list, pid) < 0) {
1911 	max_data->pid = tsk->pid;
4114 		    "#  cmd     pid     |||||| time  |   caller     \n"
4197 		   data->comm, data->pid,
4288 				 entry->pid, iter->cpu, iter->ts);
4313 		SEQ_PUT_HEX_FIELD(s, entry->pid);
4342 		SEQ_PUT_FIELD(s, entry->pid);
5435 	"  saved_cmdlines_size\t- echo command number in here to store comm-pid list\n"
5475 	"  set_ftrace_pid\t- Write pid(s) to only function trace those pids\n"
5477 	"  set_ftrace_notrace_pid\t- Write pid(s) to not function trace those pids\n"