linux-master/kernel/tsacct.c

22 		   struct taskstats *stats, struct task_struct *tsk)
34 	delta = now_ns - tsk->group_leader->start_time;
38 	delta = now_ns - tsk->start_time;
46 	if (tsk->flags & PF_EXITING)
47 		stats->ac_exitcode = tsk->exit_code;
48 	if (thread_group_leader(tsk) && (tsk->flags & PF_FORKNOEXEC))
50 	if (tsk->flags & PF_SUPERPRIV)
52 	if (tsk->flags & PF_DUMPCORE)
54 	if (tsk->flags & PF_SIGNALED)
56 	stats->ac_nice	 = task_nice(tsk);
57 	stats->ac_sched	 = tsk->policy;
58 	stats->ac_pid	 = task_pid_nr_ns(tsk, pid_ns);
59 	stats->ac_tgid   = task_tgid_nr_ns(tsk, pid_ns);
61 	tcred = __task_cred(tsk);
64 	stats->ac_ppid	 = pid_alive(tsk) ?
65 		task_tgid_nr_ns(rcu_dereference(tsk->real_parent), pid_ns) : 0;
68 	task_cputime(tsk, &utime, &stime);
72 	task_cputime_scaled(tsk, &utimescaled, &stimescaled);
76 	stats->ac_minflt = tsk->min_flt;
77 	stats->ac_majflt = tsk->maj_flt;
79 	strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
124 static void __acct_update_integrals(struct task_struct *tsk,
129 	if (!likely(tsk->mm))
133 	delta = time - tsk->acct_timexpd;
138 	tsk->acct_timexpd = time;
144 	tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm) >> 10;
145 	tsk->acct_vm_mem1 += delta * READ_ONCE(tsk->mm->total_vm) >> 10;
150  * @tsk: task_struct for accounting
152 void acct_update_integrals(struct task_struct *tsk)
158 	task_cputime(tsk, &utime, &stime);
159 	__acct_update_integrals(tsk, utime, stime);
165  * @tsk: task_struct for accounting
167 void acct_account_cputime(struct task_struct *tsk)
169 	__acct_update_integrals(tsk, tsk->utime, tsk->stime);
174  * @tsk: task_struct whose accounting fields are cleared
176 void acct_clear_integrals(struct task_struct *tsk)
178 	tsk->acct_timexpd = 0;
179 	tsk->acct_rss_mem1 = 0;
180 	tsk->acct_vm_mem1 = 0;