On Wed, 2012-05-30 at 13:48 +0400, Glauber Costa wrote:
> +static u64 tg_idle(struct task_group *tg, int cpu)
> +{
> + u64 val;
> +
> + if (tg != &root_task_group) {
> + val = cfs_read_sleep(tg->se[cpu]);
> + /* If we have rt tasks running, we're not really idle */
> + val -= rt_rq(exec_clock, tg, cpu);
> + } else
> + /*
> + * There are many errors here that we are accumulating.
> + * However, we only provide this in the interest of having
> + * a consistent interface for all cgroups. Everybody
> + * probing the root cgroup should be getting its figures
> + * from system-wide files as /proc/stat. That would be faster
> + * to begin with...
> + *
> + * Ditto for steal.
> + */
> + val = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE] * TICK_NSEC;
You just violated 2 coding style rules in one go :-)
If one side of the if-else has braces, the other side should have too.
If a block is multi-line (regardless of multi-stmt) it should have
braces.
/me hands you a bucket full of {}.
> + return val;
> +}
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