71 		struct task_struct *tsk = pid_task(pid, PIDTYPE_PID);  in pid_for_clock()  local
72 		return (tsk && same_thread_group(tsk, current)) ? pid : NULL;  in pid_for_clock()
267 void thread_group_sample_cputime(struct task_struct *tsk, u64 *samples)  in thread_group_sample_cputime()  argument
269 	struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;  in thread_group_sample_cputime()
270 	struct posix_cputimers *pct = &tsk->signal->posix_cputimers;  in thread_group_sample_cputime()
289 static void thread_group_start_cputime(struct task_struct *tsk, u64 *samples)  in thread_group_start_cputime()  argument
291 	struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;  in thread_group_start_cputime()
292 	struct posix_cputimers *pct = &tsk->signal->posix_cputimers;  in thread_group_start_cputime()
303 		thread_group_cputime(tsk, &sum);  in thread_group_start_cputime()
318 static void __thread_group_cputime(struct task_struct *tsk, u64 *samples)  in __thread_group_cputime()  argument
322 	thread_group_cputime(tsk, &ct);  in __thread_group_cputime()
353 	struct task_struct *tsk;  in posix_cpu_clock_get()  local
357 	tsk = pid_task(pid_for_clock(clock, true), clock_pid_type(clock));  in posix_cpu_clock_get()
358 	if (!tsk) {  in posix_cpu_clock_get()
364 		t = cpu_clock_sample(clkid, tsk);  in posix_cpu_clock_get()
366 		t = cpu_clock_sample_group(clkid, tsk, false);  in posix_cpu_clock_get()
486 void posix_cpu_timers_exit(struct task_struct *tsk)  in posix_cpu_timers_exit()  argument
488 	cleanup_timers(&tsk->posix_cputimers);  in posix_cpu_timers_exit()
490 void posix_cpu_timers_exit_group(struct task_struct *tsk)  in posix_cpu_timers_exit_group()  argument
492 	cleanup_timers(&tsk->signal->posix_cputimers);  in posix_cpu_timers_exit_group()
804 static inline void check_dl_overrun(struct task_struct *tsk)  in check_dl_overrun()  argument
806 	if (tsk->dl.dl_overrun) {  in check_dl_overrun()
807 		tsk->dl.dl_overrun = 0;  in check_dl_overrun()
808 		__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);  in check_dl_overrun()
831 static void check_thread_timers(struct task_struct *tsk,  in check_thread_timers()  argument
834 	struct posix_cputimers *pct = &tsk->posix_cputimers;  in check_thread_timers()
838 	if (dl_task(tsk))  in check_thread_timers()
839 		check_dl_overrun(tsk);  in check_thread_timers()
844 	task_sample_cputime(tsk, samples);  in check_thread_timers()
850 	soft = task_rlimit(tsk, RLIMIT_RTTIME);  in check_thread_timers()
853 		unsigned long rttime = tsk->rt.timeout * (USEC_PER_SEC / HZ);  in check_thread_timers()
854 		unsigned long hard = task_rlimit_max(tsk, RLIMIT_RTTIME);  in check_thread_timers()
864 			tsk->signal->rlim[RLIMIT_RTTIME].rlim_cur = soft;  in check_thread_timers()
869 		tick_dep_clear_task(tsk, TICK_DEP_BIT_POSIX_TIMER);  in check_thread_timers()
881 static void check_cpu_itimer(struct task_struct *tsk, struct cpu_itimer *it,  in check_cpu_itimer()  argument
895 				    task_tgid(tsk), cur_time);  in check_cpu_itimer()
896 		__group_send_sig_info(signo, SEND_SIG_PRIV, tsk);  in check_cpu_itimer()
908 static void check_process_timers(struct task_struct *tsk,  in check_process_timers()  argument
911 	struct signal_struct *const sig = tsk->signal;  in check_process_timers()
940 	check_cpu_itimer(tsk, &sig->it[CPUCLOCK_PROF],  in check_process_timers()
943 	check_cpu_itimer(tsk, &sig->it[CPUCLOCK_VIRT],  in check_process_timers()
947 	soft = task_rlimit(tsk, RLIMIT_CPU);  in check_process_timers()
950 		unsigned long hard = task_rlimit_max(tsk, RLIMIT_CPU);  in check_process_timers()
1049 static inline bool fastpath_timer_check(struct task_struct *tsk)  in fastpath_timer_check()  argument
1051 	struct posix_cputimers *pct = &tsk->posix_cputimers;  in fastpath_timer_check()
1057 		task_sample_cputime(tsk, samples);  in fastpath_timer_check()
1062 	sig = tsk->signal;  in fastpath_timer_check()
1089 	if (dl_task(tsk) && tsk->dl.dl_overrun)  in fastpath_timer_check()
1095 static void handle_posix_cpu_timers(struct task_struct *tsk);
1119 static inline bool posix_cpu_timers_work_scheduled(struct task_struct *tsk)  in posix_cpu_timers_work_scheduled()  argument
1121 	return tsk->posix_cputimers_work.scheduled;  in posix_cpu_timers_work_scheduled()
1124 static inline void __run_posix_cpu_timers(struct task_struct *tsk)  in __run_posix_cpu_timers()  argument
1126 	if (WARN_ON_ONCE(tsk->posix_cputimers_work.scheduled))  in __run_posix_cpu_timers()
1130 	tsk->posix_cputimers_work.scheduled = true;  in __run_posix_cpu_timers()
1131 	task_work_add(tsk, &tsk->posix_cputimers_work.work, TWA_RESUME);  in __run_posix_cpu_timers()
1134 static inline bool posix_cpu_timers_enable_work(struct task_struct *tsk,  in posix_cpu_timers_enable_work()  argument
1145 		tsk->posix_cputimers_work.scheduled = false;  in posix_cpu_timers_enable_work()
1163 	if (start != jiffies && fastpath_timer_check(tsk))  in posix_cpu_timers_enable_work()
1166 		tsk->posix_cputimers_work.scheduled = false;  in posix_cpu_timers_enable_work()
1172 static inline void __run_posix_cpu_timers(struct task_struct *tsk)  in __run_posix_cpu_timers()  argument
1175 	handle_posix_cpu_timers(tsk);  in __run_posix_cpu_timers()
1179 static inline bool posix_cpu_timers_work_scheduled(struct task_struct *tsk)  in posix_cpu_timers_work_scheduled()  argument
1184 static inline bool posix_cpu_timers_enable_work(struct task_struct *tsk,  in posix_cpu_timers_enable_work()  argument
1191 static void handle_posix_cpu_timers(struct task_struct *tsk)  in handle_posix_cpu_timers()  argument
1197 	if (!lock_task_sighand(tsk, &flags))  in handle_posix_cpu_timers()
1214 		check_thread_timers(tsk, &firing);  in handle_posix_cpu_timers()
1216 		check_process_timers(tsk, &firing);  in handle_posix_cpu_timers()
1248 	} while (!posix_cpu_timers_enable_work(tsk, start));  in handle_posix_cpu_timers()
1258 	unlock_task_sighand(tsk, &flags);  in handle_posix_cpu_timers()
1298 	struct task_struct *tsk = current;  in run_posix_cpu_timers()  local
1306 	if (posix_cpu_timers_work_scheduled(tsk))  in run_posix_cpu_timers()
1313 	if (!fastpath_timer_check(tsk))  in run_posix_cpu_timers()
1316 	__run_posix_cpu_timers(tsk);  in run_posix_cpu_timers()
1323 void set_process_cpu_timer(struct task_struct *tsk, unsigned int clkid,  in set_process_cpu_timer()  argument
1331 	nextevt = &tsk->signal->posix_cputimers.bases[clkid].nextevt;  in set_process_cpu_timer()
1332 	now = cpu_clock_sample_group(clkid, tsk, true);  in set_process_cpu_timer()
1361 	tick_dep_set_signal(tsk->signal, TICK_DEP_BIT_POSIX_TIMER);  in set_process_cpu_timer()