"nohalt" option is currently broken on IPF (2.6.12 is the earliest
kernel I looked, might be broken even earlier).
- Ken
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Chen, Kenneth W
Sent: Monday, August 08, 2005 3:25 PM
To: [email protected]
Subject: fix nohalt boot option
Apparent, this changeset broke the "nohalt" kernel boot option.
http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2
.6.git;a=commit;h=8df5a500a3e97f7811cdce0f553ca1917ccd4220
default_idle() is looking at new variable can_do_pal_halt. However,
that variable did not get cleared upon "nohalt" boot option. Resulting
a wacky behavior that the kernel option can only have effect when
perfmon
is exercised.
Signed-off-by: Ken Chen <[email protected]>
--- linux-2.6.12/arch/ia64/kernel/process.c.orig 2005-08-08
15:05:47.319034969 -0700
+++ linux-2.6.12/arch/ia64/kernel/process.c 2005-08-08
15:05:59.147159824 -0700
@@ -178,7 +178,7 @@ static int can_do_pal_halt = 1;
static int __init nohalt_setup(char * str)
{
- pal_halt = 0;
+ pal_halt = can_do_pal_halt = 0;
return 1;
}
__setup("nohalt", nohalt_setup);
-
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