From: Valentine Barshak <vbarshak@ru.mvista.com>
Date: Wed, 25 Nov 2009 11:48:52 +0000 (+0000)
Subject: powerpc: stop_this_cpu: remove the cpu from the online map.
X-Git-Tag: v2.6.33-rc1~293^2~19
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=8389b37dffdc695b4fb363ebe0ed9748bb3b48d0;p=~emulex%2Finfiniband.git

powerpc: stop_this_cpu: remove the cpu from the online map.

Remove the CPU from the online map to prevent smp_call_function
from sending messages to a stopped CPU.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 9b86a74d281..97196eefef3 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -218,6 +218,9 @@ void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
 
 static void stop_this_cpu(void *dummy)
 {
+	/* Remove this CPU */
+	set_cpu_online(smp_processor_id(), false);
+
 	local_irq_disable();
 	while (1)
 		;