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    Subject[PATCH] x86: eliminate unused irq0_irqs counter
    As of 2.6.38 this counter is being maintained without ever being read.

    Signed-off-by: Jan Beulich <jbeulich@suse.com>

    ---
    arch/x86/include/asm/hardirq.h | 1 -
    arch/x86/kernel/time.c | 3 ---
    2 files changed, 4 deletions(-)

    --- 3.3-rc4/arch/x86/include/asm/hardirq.h
    +++ 3.3-rc4-x86-no-irq0_irqs/arch/x86/include/asm/hardirq.h
    @@ -7,7 +7,6 @@
    typedef struct {
    unsigned int __softirq_pending;
    unsigned int __nmi_count; /* arch dependent */
    - unsigned int irq0_irqs;
    #ifdef CONFIG_X86_LOCAL_APIC
    unsigned int apic_timer_irqs; /* arch dependent */
    unsigned int irq_spurious_count;
    --- 3.3-rc4/arch/x86/kernel/time.c
    +++ 3.3-rc4-x86-no-irq0_irqs/arch/x86/kernel/time.c
    @@ -57,9 +57,6 @@ EXPORT_SYMBOL(profile_pc);
    */
    static irqreturn_t timer_interrupt(int irq, void *dev_id)
    {
    - /* Keep nmi watchdog up to date */
    - inc_irq_stat(irq0_irqs);
    -
    global_clock_event->event_handler(global_clock_event);

    /* MCA bus quirk: Acknowledge irq0 by setting bit 7 in port 0x61 */




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