230 void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times)  in thread_group_cputimer()  argument
232 	struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;  in thread_group_cputimer()
242 		thread_group_cputime(tsk, &sum);  in thread_group_cputimer()
287 static int posix_cpu_clock_get_task(struct task_struct *tsk,  in posix_cpu_clock_get_task()  argument
295 		if (same_thread_group(tsk, current))  in posix_cpu_clock_get_task()
296 			err = cpu_clock_sample(which_clock, tsk, &rtn);  in posix_cpu_clock_get_task()
298 		if (tsk == current || thread_group_leader(tsk))  in posix_cpu_clock_get_task()
299 			err = cpu_clock_sample_group(which_clock, tsk, &rtn);  in posix_cpu_clock_get_task()
449 void posix_cpu_timers_exit(struct task_struct *tsk)  in posix_cpu_timers_exit()  argument
451 	add_device_randomness((const void*) &tsk->se.sum_exec_runtime,  in posix_cpu_timers_exit()
453 	cleanup_timers(tsk->cpu_timers);  in posix_cpu_timers_exit()
456 void posix_cpu_timers_exit_group(struct task_struct *tsk)  in posix_cpu_timers_exit_group()  argument
458 	cleanup_timers(tsk->signal->cpu_timers);  in posix_cpu_timers_exit_group()
603 bool posix_cpu_timers_can_stop_tick(struct task_struct *tsk)  in posix_cpu_timers_can_stop_tick()  argument
605 	if (!task_cputime_zero(&tsk->cputime_expires))  in posix_cpu_timers_can_stop_tick()
609 	if (READ_ONCE(tsk->signal->cputimer.running))  in posix_cpu_timers_can_stop_tick()
858 static void check_thread_timers(struct task_struct *tsk,  in check_thread_timers()  argument
861 	struct list_head *timers = tsk->cpu_timers;  in check_thread_timers()
862 	struct signal_struct *const sig = tsk->signal;  in check_thread_timers()
863 	struct task_cputime *tsk_expires = &tsk->cputime_expires;  in check_thread_timers()
871 	if (task_cputime_zero(&tsk->cputime_expires))  in check_thread_timers()
874 	expires = check_timers_list(timers, firing, prof_ticks(tsk));  in check_thread_timers()
877 	expires = check_timers_list(++timers, firing, virt_ticks(tsk));  in check_thread_timers()
881 						   tsk->se.sum_exec_runtime);  in check_thread_timers()
892 		    tsk->rt.timeout > DIV_ROUND_UP(hard, USEC_PER_SEC/HZ)) {  in check_thread_timers()
897 			__group_send_sig_info(SIGKILL, SEND_SIG_PRIV, tsk);  in check_thread_timers()
900 		if (tsk->rt.timeout > DIV_ROUND_UP(soft, USEC_PER_SEC/HZ)) {  in check_thread_timers()
910 				tsk->comm, task_pid_nr(tsk));  in check_thread_timers()
911 			__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);  in check_thread_timers()
926 static void check_cpu_itimer(struct task_struct *tsk, struct cpu_itimer *it,  in check_cpu_itimer()  argument
947 				    tsk->signal->leader_pid, cur_time);  in check_cpu_itimer()
948 		__group_send_sig_info(signo, SEND_SIG_PRIV, tsk);  in check_cpu_itimer()
961 static void check_process_timers(struct task_struct *tsk,  in check_process_timers()  argument
964 	struct signal_struct *const sig = tsk->signal;  in check_process_timers()
975 	if (!READ_ONCE(tsk->signal->cputimer.running))  in check_process_timers()
987 	thread_group_cputimer(tsk, &cputime);  in check_process_timers()
999 	check_cpu_itimer(tsk, &sig->it[CPUCLOCK_PROF], &prof_expires, ptime,  in check_process_timers()
1001 	check_cpu_itimer(tsk, &sig->it[CPUCLOCK_VIRT], &virt_expires, utime,  in check_process_timers()
1014 			__group_send_sig_info(SIGKILL, SEND_SIG_PRIV, tsk);  in check_process_timers()
1021 			__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);  in check_process_timers()
1139 static inline int fastpath_timer_check(struct task_struct *tsk)  in fastpath_timer_check()  argument
1143 	if (!task_cputime_zero(&tsk->cputime_expires)) {  in fastpath_timer_check()
1146 		task_cputime(tsk, &task_sample.utime, &task_sample.stime);  in fastpath_timer_check()
1147 		task_sample.sum_exec_runtime = tsk->se.sum_exec_runtime;  in fastpath_timer_check()
1148 		if (task_cputime_expired(&task_sample, &tsk->cputime_expires))  in fastpath_timer_check()
1152 	sig = tsk->signal;  in fastpath_timer_check()
1185 void run_posix_cpu_timers(struct task_struct *tsk)  in run_posix_cpu_timers()  argument
1197 	if (!fastpath_timer_check(tsk))  in run_posix_cpu_timers()
1200 	if (!lock_task_sighand(tsk, &flags))  in run_posix_cpu_timers()
1207 	check_thread_timers(tsk, &firing);  in run_posix_cpu_timers()
1209 	check_process_timers(tsk, &firing);  in run_posix_cpu_timers()
1219 	unlock_task_sighand(tsk, &flags);  in run_posix_cpu_timers()
1249 void set_process_cpu_timer(struct task_struct *tsk, unsigned int clock_idx,  in set_process_cpu_timer()  argument
1255 	cpu_timer_sample_group(clock_idx, tsk, &now);  in set_process_cpu_timer()
1283 		if (expires_gt(tsk->signal->cputime_expires.prof_exp, *newval))  in set_process_cpu_timer()
1284 			tsk->signal->cputime_expires.prof_exp = *newval;  in set_process_cpu_timer()
1287 		if (expires_gt(tsk->signal->cputime_expires.virt_exp, *newval))  in set_process_cpu_timer()
1288 			tsk->signal->cputime_expires.virt_exp = *newval;  in set_process_cpu_timer()