diff options
Diffstat (limited to 'kernel/tsacct.c')
| -rw-r--r-- | kernel/tsacct.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/kernel/tsacct.c b/kernel/tsacct.c index 410483490cf6..47c71daa416f 100644 --- a/kernel/tsacct.c +++ b/kernel/tsacct.c @@ -88,4 +88,34 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p) stats->read_syscalls = p->syscr; stats->write_syscalls = p->syscw; } + + +/** + * acct_update_integrals - update mm integral fields in task_struct + * @tsk: task_struct for accounting + */ +void acct_update_integrals(struct task_struct *tsk) +{ + if (likely(tsk->mm)) { + long delta = + cputime_to_jiffies(tsk->stime) - tsk->acct_stimexpd; + + if (delta == 0) + return; + tsk->acct_stimexpd = tsk->stime; + tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm); + tsk->acct_vm_mem1 += delta * tsk->mm->total_vm; + } +} + +/** + * acct_clear_integrals - clear the mm integral fields in task_struct + * @tsk: task_struct whose accounting fields are cleared + */ +void acct_clear_integrals(struct task_struct *tsk) +{ + tsk->acct_stimexpd = 0; + tsk->acct_rss_mem1 = 0; + tsk->acct_vm_mem1 = 0; +} #endif |