diff options
| author | TAMUKI Shoichi <tamuki@linet.gr.jp> | 2010-08-10 18:03:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 08:59:22 -0700 |
| commit | c7ff0d9c92435e836e13aaa8d0e56d4000424bcc (patch) | |
| tree | 96f56d15b5dd96c44fb183ce00152608df50dc5c /Documentation | |
| parent | bebf8cfaea1df1a104b993b995bb385e998a4dc8 (diff) | |
| download | lwn-c7ff0d9c92435e836e13aaa8d0e56d4000424bcc.tar.gz lwn-c7ff0d9c92435e836e13aaa8d0e56d4000424bcc.zip | |
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 3 |
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 controller i8042.nopnp [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX controllers - 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 |