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authorRichard Cochran <rcochran@linutronix.de>2016-07-13 17:16:52 +0000
committerIngo Molnar <mingo@kernel.org>2016-07-15 10:40:28 +0200
commit4761adb6f49048cddd65553a71ea2354b2a838be (patch)
tree7ef757ce468242ac2a814f619ae63d713723de4e /arch/mips/oprofile
parent26b8768868c090151aa8c337773d429e0d5ca727 (diff)
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arm/xen: Convert to hotplug state machine
Install the callbacks via the state machine and let the core invoke the callbacks on the already online CPUs. The get_cpu() in xen_starting_cpu() boils down to preempt_disable() since we already know the CPU we run on. Disabling preemption shouldn't be required here from what I see since it we don't switch CPUs while invoking the function. Signed-off-by: Richard Cochran <rcochran@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arm-kernel@lists.infradead.org Cc: rt@linutronix.de Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/20160713153336.971559670@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
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