Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4edc5db83f574dfcc8be35b7b96760ded543b360
Commit: 4edc5db83f574dfcc8be35b7b96760ded543b360
Parent: 9c35dd7f8bda1849dcb430be99325504221048df
Author: Ingo Molnar <[EMAIL PROTECTED]>
AuthorDate: Thu Mar 22 10:31:19 2007 +0100
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Mar 22 19:42:31 2007 -0700
[PATCH] setup_boot_APIC_clock() irq-enable fix
latest -git triggers an irqtrace/lockdep warning of a leaked
irqs-off condition:
BUG: at kernel/fork.c:1033 copy_process()
after some debugging it turns out that commit ca1b940c accidentally left
interrupts disabled - which trickled down all the way to the first time
we fork a kernel thread and triggered the warning.
the fix is to re-enable interrupts in the 'else' branch of
setup_boot_APIC_clock()'s pmtimers calibration path.
Reported-by: Michal Piotrowski <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Acked-by: Thomas Gleixner <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
arch/i386/kernel/apic.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 3682511..244c3fe 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -506,7 +506,8 @@ void __init setup_boot_APIC_clock(void)
apic_printk(APIC_VERBOSE, "... jiffies result ok\n");
else
local_apic_timer_verify_ok = 0;
- }
+ } else
+ local_irq_enable();
if (!local_apic_timer_verify_ok) {
printk(KERN_WARNING
-
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