211 void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times)  in thread_group_cputimer()  argument
213 	struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;  in thread_group_cputimer()
224 		thread_group_cputime(tsk, &sum);  in thread_group_cputimer()
264 static int posix_cpu_clock_get_task(struct task_struct *tsk,  in posix_cpu_clock_get_task()  argument
272 		if (same_thread_group(tsk, current))  in posix_cpu_clock_get_task()
273 			err = cpu_clock_sample(which_clock, tsk, &rtn);  in posix_cpu_clock_get_task()
275 		if (tsk == current || thread_group_leader(tsk))  in posix_cpu_clock_get_task()
276 			err = cpu_clock_sample_group(which_clock, tsk, &rtn);  in posix_cpu_clock_get_task()
426 void posix_cpu_timers_exit(struct task_struct *tsk)  in posix_cpu_timers_exit()  argument
428 	add_device_randomness((const void*) &tsk->se.sum_exec_runtime,  in posix_cpu_timers_exit()
430 	cleanup_timers(tsk->cpu_timers);  in posix_cpu_timers_exit()
433 void posix_cpu_timers_exit_group(struct task_struct *tsk)  in posix_cpu_timers_exit_group()  argument
435 	cleanup_timers(tsk->signal->cpu_timers);  in posix_cpu_timers_exit_group()
580 bool posix_cpu_timers_can_stop_tick(struct task_struct *tsk)  in posix_cpu_timers_can_stop_tick()  argument
582 	if (!task_cputime_zero(&tsk->cputime_expires))  in posix_cpu_timers_can_stop_tick()
585 	if (tsk->signal->cputimer.running)  in posix_cpu_timers_can_stop_tick()
834 static void check_thread_timers(struct task_struct *tsk,  in check_thread_timers()  argument
837 	struct list_head *timers = tsk->cpu_timers;  in check_thread_timers()
838 	struct signal_struct *const sig = tsk->signal;  in check_thread_timers()
839 	struct task_cputime *tsk_expires = &tsk->cputime_expires;  in check_thread_timers()
843 	expires = check_timers_list(timers, firing, prof_ticks(tsk));  in check_thread_timers()
846 	expires = check_timers_list(++timers, firing, virt_ticks(tsk));  in check_thread_timers()
850 						   tsk->se.sum_exec_runtime);  in check_thread_timers()
861 		    tsk->rt.timeout > DIV_ROUND_UP(hard, USEC_PER_SEC/HZ)) {  in check_thread_timers()
866 			__group_send_sig_info(SIGKILL, SEND_SIG_PRIV, tsk);  in check_thread_timers()
869 		if (tsk->rt.timeout > DIV_ROUND_UP(soft, USEC_PER_SEC/HZ)) {  in check_thread_timers()
879 				tsk->comm, task_pid_nr(tsk));  in check_thread_timers()
880 			__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);  in check_thread_timers()
897 static void check_cpu_itimer(struct task_struct *tsk, struct cpu_itimer *it,  in check_cpu_itimer()  argument
918 				    tsk->signal->leader_pid, cur_time);  in check_cpu_itimer()
919 		__group_send_sig_info(signo, SEND_SIG_PRIV, tsk);  in check_cpu_itimer()
932 static void check_process_timers(struct task_struct *tsk,  in check_process_timers()  argument
935 	struct signal_struct *const sig = tsk->signal;  in check_process_timers()
945 	thread_group_cputimer(tsk, &cputime);  in check_process_timers()
957 	check_cpu_itimer(tsk, &sig->it[CPUCLOCK_PROF], &prof_expires, ptime,  in check_process_timers()
959 	check_cpu_itimer(tsk, &sig->it[CPUCLOCK_VIRT], &virt_expires, utime,  in check_process_timers()
972 			__group_send_sig_info(SIGKILL, SEND_SIG_PRIV, tsk);  in check_process_timers()
979 			__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);  in check_process_timers()
1095 static inline int fastpath_timer_check(struct task_struct *tsk)  in fastpath_timer_check()  argument
1100 	task_cputime(tsk, &utime, &stime);  in fastpath_timer_check()
1102 	if (!task_cputime_zero(&tsk->cputime_expires)) {  in fastpath_timer_check()
1106 			.sum_exec_runtime = tsk->se.sum_exec_runtime  in fastpath_timer_check()
1109 		if (task_cputime_expired(&task_sample, &tsk->cputime_expires))  in fastpath_timer_check()
1113 	sig = tsk->signal;  in fastpath_timer_check()
1133 void run_posix_cpu_timers(struct task_struct *tsk)  in run_posix_cpu_timers()  argument
1145 	if (!fastpath_timer_check(tsk))  in run_posix_cpu_timers()
1148 	if (!lock_task_sighand(tsk, &flags))  in run_posix_cpu_timers()
1155 	check_thread_timers(tsk, &firing);  in run_posix_cpu_timers()
1160 	if (tsk->signal->cputimer.running)  in run_posix_cpu_timers()
1161 		check_process_timers(tsk, &firing);  in run_posix_cpu_timers()
1171 	unlock_task_sighand(tsk, &flags);  in run_posix_cpu_timers()
1201 void set_process_cpu_timer(struct task_struct *tsk, unsigned int clock_idx,  in set_process_cpu_timer()  argument
1207 	cpu_timer_sample_group(clock_idx, tsk, &now);  in set_process_cpu_timer()
1235 		if (expires_gt(tsk->signal->cputime_expires.prof_exp, *newval))  in set_process_cpu_timer()
1236 			tsk->signal->cputime_expires.prof_exp = *newval;  in set_process_cpu_timer()
1239 		if (expires_gt(tsk->signal->cputime_expires.virt_exp, *newval))  in set_process_cpu_timer()
1240 			tsk->signal->cputime_expires.virt_exp = *newval;  in set_process_cpu_timer()