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Groups > linux.kernel > #1525028
| From | Len Brown <lenb@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 2/5] x86: remove idle_notifier |
| Date | 2016-11-18 07:30 +0100 |
| Message-ID | <sEKQp-3ri-9@gated-at.bofh.it> (permalink) |
| References | <sEKQp-3ri-3@gated-at.bofh.it> |
| Organization | Intel Open Source Technology Center |
From: Len Brown <len.brown@intel.com>
Upon removal of the i7300_idle driver, the idle_notifer is unused.
Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/include/asm/idle.h | 7 -------
arch/x86/kernel/process.c | 15 ---------------
2 files changed, 22 deletions(-)
diff --git a/arch/x86/include/asm/idle.h b/arch/x86/include/asm/idle.h
index c5d1785373ed..02bab09707f2 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.c b/arch/x86/kernel/process.c
index 0888a879120f..f51950715145 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -67,19 +67,6 @@ EXPORT_PER_CPU_SYMBOL(cpu_tss);
#ifdef CONFIG_X86_64
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);
#endif
/*
@@ -255,14 +242,12 @@ static inline void play_dead(void)
void enter_idle(void)
{
this_cpu_write(is_idle, 1);
- atomic_notifier_call_chain(&idle_notifier, IDLE_START, NULL);
}
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);
}
/* Called from interrupts to signify idle end */
--
2.11.0.rc1
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[PATCH 0/5] x86: remove idle notifier Len Brown <lenb@kernel.org> - 2016-11-18 07:30 +0100
[PATCH 4/5] x86: remove x86_test_and_clear_bit_percpu() Len Brown <lenb@kernel.org> - 2016-11-18 07:30 +0100
[tip:x86/idle] x86: Remove x86_test_and_clear_bit_percpu() tip-bot for Len Brown <tipbot@zytor.com> - 2016-11-18 12:30 +0100
[PATCH 3/5] x86: remove is_idle flag Len Brown <lenb@kernel.org> - 2016-11-18 07:30 +0100
[tip:x86/idle] x86/idle: Remove is_idle flag tip-bot for Len Brown <tipbot@zytor.com> - 2016-11-18 12:30 +0100
[PATCH 5/5] x86: remove enter_idle(), exit_idle() Len Brown <lenb@kernel.org> - 2016-11-18 07:30 +0100
[tip:x86/idle] x86/idle: Remove enter_idle(), exit_idle() tip-bot for Len Brown <tipbot@zytor.com> - 2016-11-18 12:30 +0100
[PATCH 2/5] x86: remove idle_notifier Len Brown <lenb@kernel.org> - 2016-11-18 07:30 +0100
[tip:x86/idle] x86/idle: Remove idle_notifier tip-bot for Len Brown <tipbot@zytor.com> - 2016-11-18 12:30 +0100
[PATCH 1/5] i7300_idle: remove this driver Len Brown <lenb@kernel.org> - 2016-11-18 07:30 +0100
[tip:x86/idle] i7300_idle: Remove this driver tip-bot for Len Brown <tipbot@zytor.com> - 2016-11-18 12:30 +0100
Re: [PATCH 0/5] x86: remove idle notifier Ingo Molnar <mingo@kernel.org> - 2016-11-18 09:20 +0100
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