93 static inline int pid_split(unsigned int pid, unsigned int *upper1,  in pid_split()  argument
99 	/* In case a bad pid is passed in, then fail */  in pid_split()
100 	if (unlikely(pid >= MAX_PID))  in pid_split()
103 	*upper1 = (pid >> UPPER1_SHIFT) & UPPER_MASK;  in pid_split()
104 	*upper2 = (pid >> UPPER2_SHIFT) & UPPER_MASK;  in pid_split()
105 	*lower = pid & LOWER_MASK;  in pid_split()
119  * trace_pid_list_is_set - test if the pid is set in the list
120  * @pid_list: The pid list to test
121  * @pid: The pid to see if set in the list.
123  * Tests if @pid is set in the @pid_list. This is usually called
124  * from the scheduler when a task is scheduled. Its pid is checked
127  * Return true if the pid is in the list, false otherwise.
129 bool trace_pid_list_is_set(struct trace_pid_list *pid_list, unsigned int pid)  in trace_pid_list_is_set()  argument
142 	if (pid_split(pid, &upper1, &upper2, &lower) < 0)  in trace_pid_list_is_set()
158  * trace_pid_list_set - add a pid to the list
159  * @pid_list: The pid list to add the @pid to.
160  * @pid: The pid to add.
162  * Adds @pid to @pid_list. This is usually done explicitly by a user
164  * when children should be traced and a task's pid is in the list.
168 int trace_pid_list_set(struct trace_pid_list *pid_list, unsigned int pid)  in trace_pid_list_set()  argument
181 	if (pid_split(pid, &upper1, &upper2, &lower) < 0)  in trace_pid_list_set()
211  * trace_pid_list_clear - remove a pid from the list
212  * @pid_list: The pid list to remove the @pid from.
213  * @pid: The pid to remove.
215  * Removes @pid from @pid_list. This is usually done explicitly by a user
221 int trace_pid_list_clear(struct trace_pid_list *pid_list, unsigned int pid)  in trace_pid_list_clear()  argument
233 	if (pid_split(pid, &upper1, &upper2, &lower) < 0)  in trace_pid_list_clear()
262  * trace_pid_list_next - return the next pid in the list
263  * @pid_list: The pid list to examine.
264  * @pid: The pid to start from
265  * @next: The pointer to place the pid that is set starting from @pid.
267  * Looks for the next consecutive pid that is in @pid_list starting
268  * at the pid specified by @pid. If one is set (including @pid), then
269  * that pid is placed into @next.
271  * Return 0 when a pid is found, -1 if there are no more pids included.
273 int trace_pid_list_next(struct trace_pid_list *pid_list, unsigned int pid,  in trace_pid_list_next()  argument
286 	if (pid_split(pid, &upper1, &upper2, &lower) < 0)  in trace_pid_list_next()
318  * trace_pid_list_first - return the first pid in the list
319  * @pid_list: The pid list to examine.
320  * @pid: The pointer to place the pid first found pid that is set.
322  * Looks for the first pid that is set in @pid_list, and places it
323  * into @pid if found.
325  * Return 0 when a pid is found, -1 if there are no pids set.
327 int trace_pid_list_first(struct trace_pid_list *pid_list, unsigned int *pid)  in trace_pid_list_first()  argument
329 	return trace_pid_list_next(pid_list, 0, pid);  in trace_pid_list_first()