path: root/Documentation
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authorTAMUKI Shoichi <>2010-08-10 18:03:28 -0700
committerLinus Torvalds <>2010-08-11 08:59:22 -0700
commitc7ff0d9c92435e836e13aaa8d0e56d4000424bcc (patch)
tree96f56d15b5dd96c44fb183ce00152608df50dc5c /Documentation
parentbebf8cfaea1df1a104b993b995bb385e998a4dc8 (diff)
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 <> Cc: Ben Dooks <> Cc: Russell King <> Acked-by: Dmitry Torokhov <> Cc: Anton Blanchard <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'Documentation')
1 files changed, 0 insertions, 3 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index d529b1363e95..873b68090098 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -915,9 +915,6 @@ and is between 256 and 4096 characters. It is defined in the file
i8042.nopnp [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX
- i8042.panicblink=
- [HW] Frequency with which keyboard LEDs should blink
- when kernel panics (default is 0.5 sec)
i8042.reset [HW] Reset the controller during init and cleanup
i8042.unlock [HW] Unlock (ignore) the keylock