From f65de758b3d84a085bfe3fc769c4650bcf62ffa4 Mon Sep 17 00:00:00 2001 From: Todd Poynor Date: Wed, 15 Jun 2011 17:21:57 -0700 Subject: Move x86_64 idle notifiers to generic Move the x86_64 idle notifiers originally by Andi Kleen and Venkatesh Pallipadi to generic. Change-Id: Idf29cda15be151f494ff245933c12462643388d5 Acked-by: Nicolas Pitre Signed-off-by: Todd Poynor --- arch/x86/include/asm/idle.h | 7 ------- arch/x86/kernel/process_64.c | 18 ++---------------- 2 files changed, 2 insertions(+), 23 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/idle.h b/arch/x86/include/asm/idle.h index f49253d75710..f1e4268ef3c6 100644 --- a/arch/x86/include/asm/idle.h +++ b/arch/x86/include/asm/idle.h @@ -1,13 +1,6 @@ #ifndef _ASM_X86_IDLE_H #define _ASM_X86_IDLE_H -#define IDLE_START 1 -#define IDLE_END 2 - -struct notifier_block; -void idle_notifier_register(struct notifier_block *n); -void idle_notifier_unregister(struct notifier_block *n); - #ifdef CONFIG_X86_64 void enter_idle(void); void exit_idle(void); diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index f693e44e1bf6..cbd26458911a 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -57,31 +57,17 @@ asmlinkage extern void ret_from_fork(void); DEFINE_PER_CPU(unsigned long, old_rsp); static DEFINE_PER_CPU(unsigned char, is_idle); -static ATOMIC_NOTIFIER_HEAD(idle_notifier); - -void idle_notifier_register(struct notifier_block *n) -{ - atomic_notifier_chain_register(&idle_notifier, n); -} -EXPORT_SYMBOL_GPL(idle_notifier_register); - -void idle_notifier_unregister(struct notifier_block *n) -{ - atomic_notifier_chain_unregister(&idle_notifier, n); -} -EXPORT_SYMBOL_GPL(idle_notifier_unregister); - void enter_idle(void) { percpu_write(is_idle, 1); - atomic_notifier_call_chain(&idle_notifier, IDLE_START, NULL); + idle_notifier_call_chain(IDLE_START); } static void __exit_idle(void) { if (x86_test_and_clear_bit_percpu(0, is_idle) == 0) return; - atomic_notifier_call_chain(&idle_notifier, IDLE_END, NULL); + idle_notifier_call_chain(IDLE_END); } /* Called from interrupts to signify idle end */ -- cgit v1.2.3