tree 203a052c14802892f38faec96799b111b22f5d43
parent c1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201
author Paulo Costa <me@paulo.costa.nom.br> 1486681655 -0200
committer Jacek Anaszewski <jacek.anaszewski@gmail.com> 1488834407 +0100

leds/trigger/cpu: Add LED trigger for all CPUs aggregated

Currently there is one CPU led trigger per cpu ('cpu0', 'cpu1', ...)

This patch adds a new trigger, 'cpu', with brightness proportional to
the number of active CPUs.

If multiple brightness levels aren't supported on the LED,
it effectively indicates if there is any CPU active.

This is particularly useful on tiny linux boards with more CPU cores than LED pins.

Signed-off-by: Paulo Costa <me@paulo.costa.nom.br>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>