panic: keep blinking in spite of long spin timer mode
authorTAMUKI Shoichi <tamuki@linet.gr.jp>
Wed, 11 Aug 2010 01:03:28 +0000 (18:03 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Aug 2010 15:59:22 +0000 (08:59 -0700)
commitc7ff0d9c92435e836e13aaa8d0e56d4000424bcc
tree96f56d15b5dd96c44fb183ce00152608df50dc5c
parentbebf8cfaea1df1a104b993b995bb385e998a4dc8
panic: keep blinking in spite of long spin timer mode

To keep panic_timeout accuracy when running under a hypervisor, the
current implementation only spins on long time (1 second) calls to mdelay.
 That brings a good effect, but the problem is the keyboard LEDs don't
blink at all on that situation.

This patch changes to call to panic_blink_enter() between every mdelay and
keeps blinking in spite of long spin timer mode.

The time to call to mdelay is now 100ms.  Even this change will keep
panic_timeout accuracy enough when running under a hypervisor.

Signed-off-by: TAMUKI Shoichi <tamuki@linet.gr.jp>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/kernel-parameters.txt
arch/arm/mach-s3c2440/mach-gta02.c
drivers/input/serio/i8042.c
include/linux/kernel.h
kernel/panic.c