[PATCH] LED: add LED heartbeat trigger

Add an LED trigger acts like a heart beat.  This can be used as a
replacement of CONFIG_HEARTBEAT code exists in some arch's timer code.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Cc: "Nish Aravamudan" <nish.aravamudan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index f573d5af0b1f..96509989e921 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -93,5 +93,14 @@ config LEDS_TRIGGER_IDE_DISK
           This allows LEDs to be controlled by IDE disk activity.
           If unsure, say Y.
 
+config LEDS_TRIGGER_HEARTBEAT
+        tristate "LED Heartbeat Trigger"
+        depends LEDS_TRIGGERS
+        help
+          This allows LEDs to be controlled by a CPU load average.
+          The flash frequency is a hyperbolic function of the 1-minute
+          load average.
+          If unsure, say Y.
+
 endmenu