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Message-Id: <4F4787930200007800074A10@nat28.tlf.novell.com>
Date: Fri, 24 Feb 2012 11:50:27 +0000
From: "Jan Beulich" <JBeulich@...e.com>
To: <mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com>
Cc: <linux-kernel@...r.kernel.org>
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@...e.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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