Merge branch 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (682 commits)
  percpu: fix spurious alignment WARN in legacy SMP percpu allocator
  percpu: generalize embedding first chunk setup helper
  percpu: more flexibility for @dyn_size of pcpu_setup_first_chunk()
  percpu: make x86 addr <-> pcpu ptr conversion macros generic
  linker script: define __per_cpu_load on all SMP capable archs
  x86: UV: remove uv_flush_tlb_others() WARN_ON
  percpu: finer grained locking to break deadlock and allow atomic free
  percpu: move fully free chunk reclamation into a work
  percpu: move chunk area map extension out of area allocation
  percpu: replace pcpu_realloc() with pcpu_mem_alloc() and pcpu_mem_free()
  x86, percpu: setup reserved percpu area for x86_64
  percpu, module: implement reserved allocation and use it for module percpu variables
  percpu: add an indirection ptr for chunk page map access
  x86: make embedding percpu allocator return excessive free space
  percpu: use negative for auto for pcpu_setup_first_chunk() arguments
  percpu: improve first chunk initial area map handling
  percpu: cosmetic renames in pcpu_setup_first_chunk()
  percpu: clean up percpu constants
  x86: un-__init fill_pud/pmd/pte
  x86: remove vestigial fix_ioremap prototypes
  ...

Manually merge conflicts in arch/ia64/kernel/irq_ia64.c

1 files changed, 39 insertions, 5 deletions

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 3973e2df7f8..f13ca1650aa 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -6,10 +6,12 @@
 #include <linux/kernel_stat.h>
 #include <linux/seq_file.h>
 #include <linux/smp.h>
+#include <linux/ftrace.h>
 
 #include <asm/apic.h>
 #include <asm/io_apic.h>
 #include <asm/irq.h>
+#include <asm/idle.h>
 
 atomic_t irq_err_count;
 
@@ -36,11 +38,7 @@ void ack_bad_irq(unsigned int irq)
 #endif
 }
 
-#ifdef CONFIG_X86_32
-# define irq_stats(x)		(&per_cpu(irq_stat, x))
-#else
-# define irq_stats(x)		cpu_pda(x)
-#endif
+#define irq_stats(x)		(&per_cpu(irq_stat, x))
 /*
  * /proc/interrupts printing:
  */
@@ -192,4 +190,40 @@ u64 arch_irq_stat(void)
 	return sum;
 }
 
+
+/*
+ * do_IRQ handles all normal device IRQ's (the special
+ * SMP cross-CPU interrupts have their own specific
+ * handlers).
+ */
+unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
+{
+	struct pt_regs *old_regs = set_irq_regs(regs);
+
+	/* high bit used in ret_from_ code  */
+	unsigned vector = ~regs->orig_ax;
+	unsigned irq;
+
+	exit_idle();
+	irq_enter();
+
+	irq = __get_cpu_var(vector_irq)[vector];
+
+	if (!handle_irq(irq, regs)) {
+#ifdef CONFIG_X86_64
+		if (!disable_apic)
+			ack_APIC_irq();
+#endif
+
+		if (printk_ratelimit())
+			printk(KERN_EMERG "%s: %d.%d No irq handler for vector (irq %d)\n",
+			       __func__, smp_processor_id(), vector, irq);
+	}
+
+	irq_exit();
+
+	set_irq_regs(old_regs);
+	return 1;
+}
+
 EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);