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Groups > linux.kernel > #1525026
| From | Len Brown <lenb@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3/5] x86: remove is_idle flag |
| Date | 2016-11-18 07:30 +0100 |
| Message-ID | <sEKQp-3ri-5@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 idle_notifier, all accesses to
the "is_idle" flag serve no purpose.
Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/kernel/process.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index f51950715145..d8e9d794e114 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -65,10 +65,6 @@ __visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, cpu_tss) = {
};
EXPORT_PER_CPU_SYMBOL(cpu_tss);
-#ifdef CONFIG_X86_64
-static DEFINE_PER_CPU(unsigned char, is_idle);
-#endif
-
/*
* this gets called so that we can store lazy state into memory and copy the
* current task into the new thread.
@@ -241,13 +237,10 @@ static inline void play_dead(void)
#ifdef CONFIG_X86_64
void enter_idle(void)
{
- this_cpu_write(is_idle, 1);
}
static void __exit_idle(void)
{
- if (x86_test_and_clear_bit_percpu(0, is_idle) == 0)
- return;
}
/* 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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