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From: Mike Travis <travis@sgi.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Jack Steiner <steiner@sgi.com>, LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 1/1] SGI x86 UV: Use raw_smp_processor_id
Date: Mon, 27 Oct 2008 11:46:50 -0700	[thread overview]
Message-ID: <49060C9A.5060807@sgi.com> (raw)
In-Reply-To: <20081027180616.GG3046@elte.hu>

Subject: SGI x86 UV: Use raw_smp_processor_id

> one small comment:
> 
>> +	/* is this cpu idle? */
>> +	if (idle_cpu(smp_processor_id()))
>>  		bits &= ~SCIR_CPU_ACTIVITY;
> 
> were you ever to run an -rt kernel on that hardware, this would 
> produce a warning. raw_smp_processor_id() would be more appropriate i 
> guess.

Thanks for the heads up!  Yes, -rt is supported.  Might as well avoid that
problem now.

Signed-of-by: Mike Travis <travis@sgi.com>
---
 arch/x86/kernel/genx2apic_uv_x.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- test-tip-latest.orig/arch/x86/kernel/genx2apic_uv_x.c
+++ test-tip-latest/arch/x86/kernel/genx2apic_uv_x.c
@@ -372,7 +372,7 @@ static void uv_heartbeat(unsigned long i
 	bits ^= SCIR_CPU_HEARTBEAT;
 
 	/* is this cpu idle? */
-	if (idle_cpu(smp_processor_id()))
+	if (idle_cpu(raw_smp_processor_id()))
 		bits &= ~SCIR_CPU_ACTIVITY;
 	else
 		bits |= SCIR_CPU_ACTIVITY;

  reply	other threads:[~2008-10-27 18:45 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-24 11:19 [PATCH 1/1] SGI X86 UV: Provide a System Activity Indicator driver Mike Travis
2008-10-24 12:01 ` Pavel Machek
2008-10-24 12:05   ` Ingo Molnar
2008-10-24 12:27     ` Mike Travis
2008-10-24 18:12       ` Andi Kleen
2008-10-24 22:18         ` Mike Travis
2008-10-24 22:24           ` Mike Travis
2008-10-27 11:42             ` Ingo Molnar
2008-10-27 14:38               ` Mike Travis
2008-10-27 14:51               ` [PATCH 1/1] SGI x86 UV: Update SCIR driver to use idle_cpu function Mike Travis
2008-10-27 18:06                 ` Ingo Molnar
2008-10-27 18:46                   ` Mike Travis [this message]
2008-10-25  6:56           ` [PATCH 1/1] SGI X86 UV: Provide a System Activity Indicator driver Andi Kleen
2008-10-27 15:12             ` Mike Travis
2008-10-27 11:36           ` Ingo Molnar
2008-10-27 11:43       ` Ingo Molnar
2008-10-24 12:14   ` Mike Travis

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