linux-kernel - [PATCH][for 2.6.28] powerpc: Use physical cpu id when setting the processor affinity

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Date:	Tue,  2 Dec 2008 13:37:01 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>
Subject: [PATCH][for 2.6.28] powerpc: Use physical cpu id when setting the processor affinity

In the CONFIG_SMP case the irq_choose_cpu() code was returning back
a logical cpu id not the physical id.  We were writing that directly
into the HW register.

We need to be calling get_hard_smp_processor_id() so irq_choose_cpu()
always returns a physical cpu id.

Signed-off-by: Kumar Gala <galak@...nel.crashing.org>
---
 arch/powerpc/sysdev/mpic.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index b24e1d0..1890fb0 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -600,7 +600,7 @@ static int irq_choose_cpu(unsigned int virt_irq)
 		cpuid = first_cpu(tmp);
 	}
 
-	return cpuid;
+	return get_hard_smp_processor_id(cpuid);
 }
 #else
 static int irq_choose_cpu(unsigned int virt_irq)
-- 
1.5.6.5

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