ARM: SMP: avoid using bitmasks and locks for IPIs, use hardware instead

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Avoid using bitmasks and locks in the percpu area for IPIs, and instead
use individual software generated interrupts to identify the reason for
the IPI.  This avoids the problems of having spinlocks in the percpu
area.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Russell King 2010-11-15 09:54:18 +00:00

parent ad3b6993b9

commit 24480d980e

1 changed files with 26 additions and 61 deletions

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arch/arm/kernel/smp.c

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