Re: [PATCH v6 2/6] PM / Runtime: introduce pm_runtime_set_memalloc_noio()

[Ming Lei]

On Wed, Nov 28, 2012 at 5:19 AM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
>
> Please use counters instead of walking the whole path every time.  Ie. in
> addition to the flag add a counter to store the number of the device's
> children having that flag set.

Even though counter is added, walking the whole path can't be avoided too,
and may be a explicit walking or recursion, because pm_runtime_set_memalloc_noio
is required to set or clear the flag(or increase/decrease the counter) of
devices in the whole path.

Thanks,
--
Ming Lei
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/