linux/include/asm-x86_64/pda.h
Andi Kleen 9446868b53 [PATCH] x86-64: Fix race in exit_idle
When another interrupt happens in exit_idle the exit idle notifier
could be called an incorrect number of times.

Add a test_and_clear_bit_pda and use it handle the bit
atomically against interrupts to avoid this.

Pointed out by Stephane Eranian

Signed-off-by: Andi Kleen <ak@suse.de>
2006-11-14 16:57:46 +01:00

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3.6 KiB