linux-kernel - [PATCH 4/4] tile/CPU hotplug: Add missing call to notify_cpu

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Message-ID: <20120322112905.17063.88829.stgit@srivatsabhat.in.ibm.com>
Date:	Thu, 22 Mar 2012 16:59:11 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	rkuo@...eaurora.org, tglx@...utronix.de, linas@...eaurora.org,
	mingo@...e.hu, a.p.zijlstra@...llo.nl, dhowells@...hat.com,
	yasutake.koichi@...panasonic.com, akpm@...ux-foundation.org,
	benh@...nel.crashing.org, jesper.nilsson@...s.com,
	cmetcalf@...era.com, linux@....linux.org.uk, jejb@...isc-linux.org,
	deller@....de, vapier@...too.org
Cc:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-am33-list@...hat.com, linux-parisc@...r.kernel.org
Subject: [PATCH 4/4] tile/CPU hotplug: Add missing call to
 notify_cpu_starting()

The scheduler depends on receiving the CPU_STARTING notification, without
which we end up into a lot of trouble. So add the missing call to
notify_cpu_starting() in the bringup code.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com>
---

 arch/tile/kernel/smpboot.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/tile/kernel/smpboot.c b/arch/tile/kernel/smpboot.c
index b949edc..172aef7 100644
--- a/arch/tile/kernel/smpboot.c
+++ b/arch/tile/kernel/smpboot.c
@@ -196,6 +196,8 @@ void __cpuinit online_secondary(void)
 	/* This must be done before setting cpu_online_mask */
 	wmb();
 
+	notify_cpu_starting(smp_processor_id());
+
 	/*
 	 * We need to hold call_lock, so there is no inconsistency
 	 * between the time smp_call_function() determines number of

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