Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

[linux-2.6] / kernel / softirq.c

diff --git a/kernel/softirq.c b/kernel/softirq.c
index aab880677ce0fdf0b94a079e6eff54eed4bfd0a4..3789ca98197c2a793b25dc6ac403e26202312133 100644 (file)
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -65,6 +65,7 @@ static inline void wakeup_softirqd(void)
  * This one is for softirq.c-internal use,
  * where hardirqs are disabled legitimately:
  */
+#ifdef CONFIG_TRACE_IRQFLAGS
 static void __local_bh_disable(unsigned long ip)
 {
        unsigned long flags;
@@ -80,6 +81,13 @@ static void __local_bh_disable(unsigned long ip)
                trace_softirqs_off(ip);
        raw_local_irq_restore(flags);
 }
+#else /* !CONFIG_TRACE_IRQFLAGS */
+static inline void __local_bh_disable(unsigned long ip)
+{
+       add_preempt_count(SOFTIRQ_OFFSET);
+       barrier();
+}
+#endif /* CONFIG_TRACE_IRQFLAGS */
 
 void local_bh_disable(void)
 {
@@ -121,12 +129,16 @@ EXPORT_SYMBOL(_local_bh_enable);
 
 void local_bh_enable(void)
 {
+#ifdef CONFIG_TRACE_IRQFLAGS
        unsigned long flags;
 
        WARN_ON_ONCE(in_irq());
+#endif
        WARN_ON_ONCE(irqs_disabled());
 
+#ifdef CONFIG_TRACE_IRQFLAGS
        local_irq_save(flags);
+#endif
        /*
         * Are softirqs going to be turned on now:
         */
@@ -142,18 +154,22 @@ void local_bh_enable(void)
                do_softirq();
 
        dec_preempt_count();
+#ifdef CONFIG_TRACE_IRQFLAGS
        local_irq_restore(flags);
+#endif
        preempt_check_resched();
 }
 EXPORT_SYMBOL(local_bh_enable);
 
 void local_bh_enable_ip(unsigned long ip)
 {
+#ifdef CONFIG_TRACE_IRQFLAGS
        unsigned long flags;
 
        WARN_ON_ONCE(in_irq());
 
        local_irq_save(flags);
+#endif
        /*
         * Are softirqs going to be turned on now:
         */
@@ -169,7 +185,9 @@ void local_bh_enable_ip(unsigned long ip)
                do_softirq();
 
        dec_preempt_count();
+#ifdef CONFIG_TRACE_IRQFLAGS
        local_irq_restore(flags);
+#endif
        preempt_check_resched();
 }
 EXPORT_SYMBOL(local_bh_enable_ip);