From f08b5fe2d4eeb0a8a6e0e7e71928cf2c7b1b791d Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 18 Nov 2016 01:23:19 -0500 Subject: [PATCH] x86/idle: Remove is_idle flag Upon removal of the idle_notifier, all accesses to the "is_idle" flag serve no purpose. Signed-off-by: Len Brown Acked-by: Ingo Molnar Acked-by: Peter Zijlstra (Intel) Link: http://lkml.kernel.org/r/e4a24197cf9c227fcd1ca2df09999eaec9052f49.1479449716.git.len.brown@intel.com Signed-off-by: Thomas Gleixner --- 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 */ -- 2.45.2