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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-15 22:23:40 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-15 22:23:40 -0400
commit5f6fb45466b2273ffb91c9cf209f164f666c33b1 (patch)
tree2b19f24b678ae379be1b19338c3095c1f76ed41d /arch/x86/kernel/smpboot.c
parent3904afb41d4316f7a2968c615d689e19149a4f84 (diff)
parentc0185808eb85139f45dbfd0de66963c498d0c4db (diff)
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (116 commits) x86: Enable forced interrupt threading support x86: Mark low level interrupts IRQF_NO_THREAD x86: Use generic show_interrupts x86: ioapic: Avoid redundant lookup of irq_cfg x86: ioapic: Use new move_irq functions x86: Use the proper accessors in fixup_irqs() x86: ioapic: Use irq_data->state x86: ioapic: Simplify irq chip and handler setup x86: Cleanup the genirq name space genirq: Add chip flag to force mask on suspend genirq: Add desc->irq_data accessor genirq: Add comments to Kconfig switches genirq: Fixup fasteoi handler for oneshot mode genirq: Provide forced interrupt threading sched: Switch wait_task_inactive to schedule_hrtimeout() genirq: Add IRQF_NO_THREAD genirq: Allow shared oneshot interrupts genirq: Prepare the handling of shared oneshot interrupts genirq: Make warning in handle_percpu_event useful x86: ioapic: Move trigger defines to io_apic.h ... Fix up trivial(?) conflicts in arch/x86/pci/xen.c due to genirq name space changes clashing with the Xen cleanups. The set_irq_msi() had moved to xen_bind_pirq_msi_to_irq().
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
-rw-r--r--arch/x86/kernel/smpboot.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index e2865df242bc..16ce42613991 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -64,6 +64,7 @@
64#include <asm/mtrr.h> 64#include <asm/mtrr.h>
65#include <asm/mwait.h> 65#include <asm/mwait.h>
66#include <asm/apic.h> 66#include <asm/apic.h>
67#include <asm/io_apic.h>
67#include <asm/setup.h> 68#include <asm/setup.h>
68#include <asm/uv/uv.h> 69#include <asm/uv/uv.h>
69#include <linux/mc146818rtc.h> 70#include <linux/mc146818rtc.h>
@@ -927,6 +928,14 @@ int __cpuinit native_cpu_up(unsigned int cpu)
927 return 0; 928 return 0;
928} 929}
929 930
931/**
932 * arch_disable_smp_support() - disables SMP support for x86 at runtime
933 */
934void arch_disable_smp_support(void)
935{
936 disable_ioapic_support();
937}
938
930/* 939/*
931 * Fall back to non SMP mode after errors. 940 * Fall back to non SMP mode after errors.
932 * 941 *
@@ -1027,7 +1036,7 @@ static int __init smp_sanity_check(unsigned max_cpus)
1027 "(tell your hw vendor)\n"); 1036 "(tell your hw vendor)\n");
1028 } 1037 }
1029 smpboot_clear_io_apic(); 1038 smpboot_clear_io_apic();
1030 arch_disable_smp_support(); 1039 disable_ioapic_support();
1031 return -1; 1040 return -1;
1032 } 1041 }
1033 1042