ARM: 7133/1: SMP: fix per cpu timer setup before the cpu is marked online

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The problem is related to the early enabling of interrupts and the
per cpu timer setup before the cpu is marked online. This doesn't
need to be done in order to call calibrate_delay().

calibrate_delay() monitors jiffies, which are updated from the CPU
which is waiting for the new CPU to set the online bit.

So simply calibrate_delay() can be called on the new CPU just from
the interrupt disabled region and move the local timer setup after
stored the cpu data and before enabling interrupts.

This solves both the cpu_online vs. cpu_active problem and the
affinity setting of the per cpu timers.

Signed-off-by: Thomas Gleinxer <tglx@linutronix.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

...

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Thomas Gleinxer 2011-10-14 12:44:41 +01:00 • committed by Russell King

parent 6c5482d53f

commit eb0474544b

1 changed files with 13 additions and 10 deletions

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arch/arm/kernel/smp.c

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