ARM: SMP: Always enable clock event broadcast support

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The TWD local timers are unable to wake up the CPU when it is placed
into a low power mode, eg. C3.  Therefore, we need to adapt things
such that the TWD code can cope with this.

We do this by always providing a broadcast tick function, and marking
the fact that the TWD local timer will stop in low power modes.  This
means that when the CPU is placed into a low power mode, the core
timer code marks this fact, and allows an IPI to be given to the core.

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>

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Russell King 2010-07-26 13:19:43 +01:00

parent 9ca03a21e3

commit 5388a6b266

3 changed files with 8 additions and 3 deletions

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2

arch/arm/Kconfig

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6

arch/arm/kernel/smp.c

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3

arch/arm/kernel/smp_twd.c

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