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authorAndi Kleen <ak@suse.de>2006-09-26 10:52:40 +0200
committerAndi Kleen <andi@basil.nowhere.org>2006-09-26 10:52:40 +0200
commita15da49debaf7f09460a886b0ecd08588410715e (patch)
tree685ed022695ff03cec167c6690815e08191a803c /include/asm-x86_64
parent1c9c0a6ca35e9325cea811d734d6ab7352be086b (diff)
[PATCH] Fix idle notifiers
Previously exit_idle would be called more often than enter_idle Now instead of using complicated tests just keep track of it using the per CPU variable as a flip flop. I moved the idle state into the PDA to make the access more efficient. Original bug report and an initial patch from Stephane Eranian, but redone by AK. Cc: Stephane Eranian <eranian@hpl.hp.com> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'include/asm-x86_64')
-rw-r--r--include/asm-x86_64/pda.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-x86_64/pda.h b/include/asm-x86_64/pda.h
index 531f48a6c3a..14996d962ba 100644
--- a/include/asm-x86_64/pda.h
+++ b/include/asm-x86_64/pda.h
@@ -25,7 +25,8 @@ struct x8664_pda {
int nodenumber; /* number of current node */
unsigned int __softirq_pending;
unsigned int __nmi_count; /* number of NMI on this CPUs */
- int mmu_state;
+ short mmu_state;
+ short isidle;
struct mm_struct *active_mm;
unsigned apic_timer_irqs;
} ____cacheline_aligned_in_smp;