[PATCH] x86/xen: Remove redundant irq_enter/exit() invocations

[Thomas Gleixner]

All these handlers are regular device interrupt handlers, so they already
went through the proper entry code which handles this correctly.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Cc: x86@xxxxxxxxxx
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
---
 arch/x86/xen/smp.c    |    4 ----
 arch/x86/xen/smp_pv.c |    2 --
 2 files changed, 6 deletions(-)

--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -268,20 +268,16 @@ void xen_send_IPI_allbutself(int vector)
 
 static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id)
 {
-	irq_enter();
 	generic_smp_call_function_interrupt();
 	inc_irq_stat(irq_call_count);
-	irq_exit();
 
 	return IRQ_HANDLED;
 }
 
 static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id)
 {
-	irq_enter();
 	generic_smp_call_function_single_interrupt();
 	inc_irq_stat(irq_call_count);
-	irq_exit();
 
 	return IRQ_HANDLED;
 }
--- a/arch/x86/xen/smp_pv.c
+++ b/arch/x86/xen/smp_pv.c
@@ -458,10 +458,8 @@ static void xen_pv_stop_other_cpus(int w
 
 static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id)
 {
-	irq_enter();
 	irq_work_run();
 	inc_irq_stat(apic_irq_work_irqs);
-	irq_exit();
 
 	return IRQ_HANDLED;
 }