#include <linux/sched.h>
#include <linux/tsacct_kern.h>
#include <linux/acct.h>
+#include <linux/jiffies.h>
#define USEC_PER_TICK (USEC_PER_SEC/HZ)
/* calculate task elapsed time in timespec */
do_posix_clock_monotonic_gettime(&uptime);
- ts = timespec_sub(uptime, current->group_leader->start_time);
+ ts = timespec_sub(uptime, tsk->start_time);
/* rebase elapsed time to usec */
ac_etime = timespec_to_ns(&ts);
do_div(ac_etime, NSEC_PER_USEC);
stats->ac_uid = tsk->uid;
stats->ac_gid = tsk->gid;
stats->ac_pid = tsk->pid;
- stats->ac_ppid = (tsk->parent) ? tsk->parent->pid : 0;
+ rcu_read_lock();
+ stats->ac_ppid = pid_alive(tsk) ?
+ rcu_dereference(tsk->real_parent)->tgid : 0;
+ rcu_read_unlock();
stats->ac_utime = cputime_to_msecs(tsk->utime) * USEC_PER_MSEC;
stats->ac_stime = cputime_to_msecs(tsk->stime) * USEC_PER_MSEC;
stats->ac_minflt = tsk->min_flt;
stats->ac_majflt = tsk->maj_flt;
- /* Each process gets a minimum of one usec cpu time */
- if ((stats->ac_utime == 0) && (stats->ac_stime == 0)) {
- stats->ac_stime = 1;
- }
strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
}
#ifdef CONFIG_TASK_XACCT
+
+#define KB 1024
+#define MB (1024*KB)
/*
* fill in extended accounting fields
*/
void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
{
- stats->acct_rss_mem1 = p->acct_rss_mem1;
- stats->acct_vm_mem1 = p->acct_vm_mem1;
- if (p->mm) {
- stats->hiwater_rss = p->mm->hiwater_rss;
- stats->hiwater_vm = p->mm->hiwater_vm;
+ struct mm_struct *mm;
+
+ /* convert pages-jiffies to Mbyte-usec */
+ stats->coremem = jiffies_to_usecs(p->acct_rss_mem1) * PAGE_SIZE / MB;
+ stats->virtmem = jiffies_to_usecs(p->acct_vm_mem1) * PAGE_SIZE / MB;
+ mm = get_task_mm(p);
+ if (mm) {
+ /* adjust to KB unit */
+ stats->hiwater_rss = mm->hiwater_rss * PAGE_SIZE / KB;
+ stats->hiwater_vm = mm->hiwater_vm * PAGE_SIZE / KB;
+ mmput(mm);
}
stats->read_char = p->rchar;
stats->write_char = p->wchar;
stats->read_syscalls = p->syscr;
stats->write_syscalls = p->syscw;
}
-
+#undef KB
+#undef MB
/**
* acct_update_integrals - update mm integral fields in task_struct
void acct_update_integrals(struct task_struct *tsk)
{
if (likely(tsk->mm)) {
- long delta =
- cputime_to_jiffies(tsk->stime) - tsk->acct_stimexpd;
+ long delta = cputime_to_jiffies(
+ cputime_sub(tsk->stime, tsk->acct_stimexpd));
if (delta == 0)
return;