x86/jump-label: Show where and what was wrong on errors

[karo-tx-linux.git] / arch / x86 / kernel / smp.c

diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index f4fe0b8879e0e79eaecf1c4aeda245d6d0ab0b70..cdaa347dfcad1c021df564c5cfa5ad856e59d3ea 100644 (file)
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -265,23 +265,30 @@ void smp_reschedule_interrupt(struct pt_regs *regs)
         */
 }
 
-void smp_trace_reschedule_interrupt(struct pt_regs *regs)
+static inline void smp_entering_irq(void)
 {
        ack_APIC_irq();
+       irq_enter();
+}
+
+void smp_trace_reschedule_interrupt(struct pt_regs *regs)
+{
+       /*
+        * Need to call irq_enter() before calling the trace point.
+        * __smp_reschedule_interrupt() calls irq_enter/exit() too (in
+        * scheduler_ipi(). This is OK, since those functions are allowed
+        * to nest.
+        */
+       smp_entering_irq();
        trace_reschedule_entry(RESCHEDULE_VECTOR);
        __smp_reschedule_interrupt();
        trace_reschedule_exit(RESCHEDULE_VECTOR);
+       exiting_irq();
        /*
         * KVM uses this interrupt to force a cpu out of guest mode
         */
 }
 
-static inline void call_function_entering_irq(void)
-{
-       ack_APIC_irq();
-       irq_enter();
-}
-
 static inline void __smp_call_function_interrupt(void)
 {
        generic_smp_call_function_interrupt();
@@ -290,14 +297,14 @@ static inline void __smp_call_function_interrupt(void)
 
 void smp_call_function_interrupt(struct pt_regs *regs)
 {
-       call_function_entering_irq();
+       smp_entering_irq();
        __smp_call_function_interrupt();
        exiting_irq();
 }
 
 void smp_trace_call_function_interrupt(struct pt_regs *regs)
 {
-       call_function_entering_irq();
+       smp_entering_irq();
        trace_call_function_entry(CALL_FUNCTION_VECTOR);
        __smp_call_function_interrupt();
        trace_call_function_exit(CALL_FUNCTION_VECTOR);
@@ -312,14 +319,14 @@ static inline void __smp_call_function_single_interrupt(void)
 
 void smp_call_function_single_interrupt(struct pt_regs *regs)
 {
-       call_function_entering_irq();
+       smp_entering_irq();
        __smp_call_function_single_interrupt();
        exiting_irq();
 }
 
 void smp_trace_call_function_single_interrupt(struct pt_regs *regs)
 {
-       call_function_entering_irq();
+       smp_entering_irq();
        trace_call_function_single_entry(CALL_FUNCTION_SINGLE_VECTOR);
        __smp_call_function_single_interrupt();
        trace_call_function_single_exit(CALL_FUNCTION_SINGLE_VECTOR);