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authorSuresh Siddha <suresh.b.siddha@intel.com>2009-10-26 14:24:31 -0800
committerIngo Molnar <mingo@elte.hu>2009-11-02 15:56:34 +0100
commit7a7732bc0f7c46f217dbec723f25366b6285cc42 (patch)
tree6238e0cf1d22c1939558b693e9a51f2703099639 /arch/x86/kernel/irq_32.c
parent6f9b41006af1bc489030f84ee247abc0df1edccd (diff)
downloadop-kernel-dev-7a7732bc0f7c46f217dbec723f25366b6285cc42.zip
op-kernel-dev-7a7732bc0f7c46f217dbec723f25366b6285cc42.tar.gz
x86: Unify fixup_irqs() for 32-bit and 64-bit kernels
There is no reason to have different fixup_irqs() for 32-bit and 64-bit kernels. Unify by using the superior 64-bit version for both the kernels. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Gary Hade <garyhade@us.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> LKML-Reference: <20091026230001.562512739@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/irq_32.c')
-rw-r--r--arch/x86/kernel/irq_32.c45
1 files changed, 0 insertions, 45 deletions
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index 7d35d0f..10709f2 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -211,48 +211,3 @@ bool handle_irq(unsigned irq, struct pt_regs *regs)
return true;
}
-
-#ifdef CONFIG_HOTPLUG_CPU
-
-/* A cpu has been removed from cpu_online_mask. Reset irq affinities. */
-void fixup_irqs(void)
-{
- unsigned int irq;
- struct irq_desc *desc;
-
- for_each_irq_desc(irq, desc) {
- const struct cpumask *affinity;
-
- if (!desc)
- continue;
- if (irq == 2)
- continue;
-
- affinity = desc->affinity;
- if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
- printk("Breaking affinity for irq %i\n", irq);
- affinity = cpu_all_mask;
- }
- if (desc->chip->set_affinity)
- desc->chip->set_affinity(irq, affinity);
- else if (desc->action)
- printk_once("Cannot set affinity for irq %i\n", irq);
- }
-
-#if 0
- barrier();
- /* Ingo Molnar says: "after the IO-APIC masks have been redirected
- [note the nop - the interrupt-enable boundary on x86 is two
- instructions from sti] - to flush out pending hardirqs and
- IPIs. After this point nothing is supposed to reach this CPU." */
- __asm__ __volatile__("sti; nop; cli");
- barrier();
-#else
- /* That doesn't seem sufficient. Give it 1ms. */
- local_irq_enable();
- mdelay(1);
- local_irq_disable();
-#endif
-}
-#endif
-
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