x86/idle: Remove is_idle flag (f08b5fe2) · Commits · 戴 / test

Upon removal of the idle_notifier, all accesses to the "is_idle" flag serve no purpose. Signed-off-by:

arch/x86/kernel/process.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -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 */