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89 lines
3.5 KiB
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From: Ingo Molnar <mingo@elte.hu>
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Subject: Re: [PATCH 5/6] x86: ifdef ioapic related function out
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Date: Mon, 14 Feb 2011 12:00:39 +0100
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Lines: 34
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Message-ID: <20110214110039.GA7140@elte.hu>
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References: <1297677612-12405-1-git-send-email-henne@nachtwindheim.de>
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<1297677612-12405-5-git-send-email-henne@nachtwindheim.de>
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Cc: mingo@readhat.com, tglx@linutronix.de, hpa@zytor.com,
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x86@kernel.org, tj@kernel.org, yinghai@kernel.org,
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ak@linux.intel.com, robert.richter@amd.com,
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linux-kernel@vger.kernel.org
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To: Henrik Kretzschmar <henne@nachtwindheim.de>
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X-From: linux-kernel-owner@vger.kernel.org Mon Feb 14 12:01:04 2011
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* Henrik Kretzschmar <henne@nachtwindheim.de> wrote:
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> arch_disable_smp_config() is an IO-APIC related function on x86,
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> and should only be needed if SMP is enabled.
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> But the IO-APIC code calls it when the parameter "noapic" is given to
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> the kernel, which doesn't mean SMP is enabled.
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>
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> Anyway this fixes compilation on x86_32 UP systems with APIC and no IO-APIC.
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>
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> Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
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> ---
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> arch/x86/kernel/apic/apic.c | 2 ++
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> 1 files changed, 2 insertions(+), 0 deletions(-)
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>
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> diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
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> index 999c531..4998f0a 100644
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> --- a/arch/x86/kernel/apic/apic.c
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> +++ b/arch/x86/kernel/apic/apic.c
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> @@ -1218,7 +1218,9 @@ void __cpuinit setup_local_APIC(void)
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> rdtscll(tsc);
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>
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> if (disable_apic) {
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> +#ifdef CONFIG_X86_IO_APIC
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> arch_disable_smp_support();
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> +#endif
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Why not make the arch_disable_smp_support() call generic in the
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arch/x86/include/asm/smp.h file (via an inline helper) and thus
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avoid an ugly #ifdef in the .c file?
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Thanks,
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Ingo
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