linux/sched/cputime.h

1 /* SPDX-License-Identifier: GPL-2.0 */
19 	*utime = t->utime;  in task_cputime()
20 	*stime = t->stime;  in task_cputime()
26 	return t->gtime;  in task_gtime()
35 	*utimescaled = t->utimescaled;  in task_cputime_scaled()
36 	*stimescaled = t->stimescaled;  in task_cputime_scaled()
59  * The following are functions that support scheduler-internal time accounting.
65  * get_running_cputimer - return &tsk->signal->cputimer if cputimers are active
73 	struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;  in get_running_cputimer()
76 	 * Check whether posix CPU timers are active. If not the thread  in get_running_cputimer()
77 	 * group accounting is not active either. Lockless check.  in get_running_cputimer()
79 	if (!READ_ONCE(tsk->signal->posix_cputimers.timers_active))  in get_running_cputimer()
83 	 * After we flush the task's sum_exec_runtime to sig->sum_sched_runtime  in get_running_cputimer()
85 	 * cputime consumed by that task, even though the task can still be  in get_running_cputimer()
96 	if (unlikely(!tsk->sighand))  in get_running_cputimer()
110  * account_group_user_time - Maintain utime for a thread group.
113  * @cputime:	Time value by which to increment the utime field of the
117  * running CPU and update the utime field there.
127 	atomic64_add(cputime, &cputimer->cputime_atomic.utime);  in account_group_user_time()
131  * account_group_system_time - Maintain stime for a thread group.
134  * @cputime:	Time value by which to increment the stime field of the
138  * running CPU and update the stime field there.
148 	atomic64_add(cputime, &cputimer->cputime_atomic.stime);  in account_group_system_time()
152  * account_group_exec_runtime - Maintain exec runtime for a thread group.
155  * @ns:		Time value by which to increment the sum_exec_runtime field
159  * running CPU and update the sum_exec_runtime field there.
169 	atomic64_add(ns, &cputimer->cputime_atomic.sum_exec_runtime);  in account_group_exec_runtime()
175 	prev->utime = prev->stime = 0;  in prev_cputime_init()
176 	raw_spin_lock_init(&prev->lock);  in prev_cputime_init()