x86/idle: Remove enter_idle(), exit_idle()

Upon removal of the is_idle flag, these routines became NOPs.

Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/822f2c22cc5890f7b8ea0eeec60277eb44505b4e.1479449716.git.len.brown@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index f5aaf6c..5731274 100644 (file)
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -639,7 +639,6 @@ extern void irq_exit(void);
 static inline void entering_irq(void)
 {
        irq_enter();
-       exit_idle();
 }
 
 static inline void entering_ack_irq(void)

diff --git a/arch/x86/include/asm/idle.h b/arch/x86/include/asm/idle.h
index 02bab09..dcebb1c 100644 (file)
--- a/arch/x86/include/asm/idle.h
+++ b/arch/x86/include/asm/idle.h
@@ -1,15 +1,6 @@
 #ifndef _ASM_X86_IDLE_H
 #define _ASM_X86_IDLE_H
 
-#ifdef CONFIG_X86_64
-void enter_idle(void);
-void exit_idle(void);
-#else /* !CONFIG_X86_64 */
-static inline void enter_idle(void) { }
-static inline void exit_idle(void) { }
-static inline void __exit_idle(void) { }
-#endif /* CONFIG_X86_64 */
-
 void amd_e400_remove_cpu(int cpu);
 
 #endif /* _ASM_X86_IDLE_H */

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index edbbfc8..093f550 100644 (file)
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -267,13 +267,11 @@ do_async_page_fault(struct pt_regs *regs, unsigned long error_code)
        case KVM_PV_REASON_PAGE_NOT_PRESENT:
                /* page is swapped out by the host. */
                prev_state = exception_enter();
-               exit_idle();
                kvm_async_pf_task_wait((u32)read_cr2());
                exception_exit(prev_state);
                break;
        case KVM_PV_REASON_PAGE_READY:
                rcu_irq_enter();
-               exit_idle();
                kvm_async_pf_task_wake((u32)read_cr2());
                rcu_irq_exit();
                break;

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index d8e9d79..ee02391 100644 (file)
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -234,34 +234,9 @@ static inline void play_dead(void)
 }
 #endif
 
-#ifdef CONFIG_X86_64
-void enter_idle(void)
-{
-}
-
-static void __exit_idle(void)
-{
-}
-
-/* Called from interrupts to signify idle end */
-void exit_idle(void)
-{
-       /* idle loop has pid 0 */
-       if (current->pid)
-               return;
-       __exit_idle();
-}
-#endif
-
 void arch_cpu_idle_enter(void)
 {
        local_touch_nmi();
-       enter_idle();
-}
-
-void arch_cpu_idle_exit(void)
-{
-       __exit_idle();
 }
 
 void arch_cpu_idle_dead(void)

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 9ecfcdc..9ad622a 100644 (file)
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -1256,7 +1256,6 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
 
        irq_enter();
 #ifdef CONFIG_X86
-       exit_idle();
        inc_irq_stat(irq_hv_callback_count);
 #endif