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sched: window-stats: code cleanup

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Provide a wrapper function to reset task's window statistics. This will be
reused by a subsequent patch

Change-Id: Ied7d32325854088c91285d8fee55d5a5e8a954b3
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
This commit is contained in:
Srivatsa Vaddagiri 2014-08-18 13:51:27 +05:30 • committed by David Keitel
parent d8932ae7df
commit dfeae566bb
1 changed files with 13 additions and 8 deletions
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21
kernel/sched/core.c
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@ -1696,6 +1696,18 @@ unsigned long sched_get_busy(int cpu)
NSEC_PER_USEC);
}
static void reset_task_stats(struct task_struct *p)
{
int i;
p->ravg.sum = 0;
p->ravg.demand = 0;
p->ravg.partial_demand = 0;
p->ravg.flags = 0;
for (i = 0; i < RAVG_HIST_SIZE_MAX; ++i)
p->ravg.sum_history[i] = 0;
}
/* Called with IRQs disabled */
void reset_all_window_stats(u64 window_start, unsigned int window_size)
{
@ -1717,14 +1729,7 @@ void reset_all_window_stats(u64 window_start, unsigned int window_size)
read_lock(&tasklist_lock);
do_each_thread(g, p) {
int i;
p->ravg.sum = 0;
p->ravg.demand = 0;
p->ravg.partial_demand = 0;
p->ravg.flags = 0;
for (i = 0; i < RAVG_HIST_SIZE_MAX; ++i)
p->ravg.sum_history[i] = 0;
reset_task_stats(p);
p->ravg.mark_start = wallclock;
} while_each_thread(g, p);
read_unlock(&tasklist_lock);