arm: Use common outgoing-CPU-notification code

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This commit removes the open-coded CPU-offline notification with new
common code.  In particular, this change avoids calling scheduler code
using RCU from an offline CPU that RCU is ignoring.  This is a minimal
change.  A more intrusive change might invoke the cpu_check_up_prepare()
and cpu_set_state_online() functions at CPU-online time, which would
allow onlining throw an error if the CPU did not go offline properly.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>

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Paul E. McKenney 2015-05-12 14:50:06 -07:00 • committed by Paul E. McKenney

parent b823cafa75

commit 1d5087ab96

1 changed files with 2 additions and 4 deletions

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arch/arm/kernel/smp.c

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