[Xen-changelog] This patch defines a test_and_clear bitop for cpumask_t pointers.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID b550a93c6459c4f0f2a86b61a08768d040482d88
# Parent  0094c4c8c22174d88e0bd9b1ae5e64d5f97e4f1b
This patch defines a test_and_clear bitop for cpumask_t pointers.
Also fixes "wrong pointer type" for type specific bitops by using
&foo[0] instead of &foo.

Signed-off-by: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>

diff -r 0094c4c8c221 -r b550a93c6459 xen/arch/x86/irq.c
--- a/xen/arch/x86/irq.c        Wed Apr 19 15:08:41 2006
+++ b/xen/arch/x86/irq.c        Wed Apr 19 17:24:49 2006
@@ -198,7 +198,7 @@
     {
         d = action->guest[i];
         if ( (action->ack_type != ACKTYPE_NONE) &&
-             !test_and_set_bit(irq, &d->pirq_mask) )
+             !test_and_set_bit(irq, &d->pirq_mask[0]) )
             action->in_flight++;
         send_guest_pirq(d, irq);
     }
@@ -235,7 +235,7 @@
 
     if ( !(desc->status & IRQ_GUEST) ||
          (action->in_flight != 0) ||
-         !test_and_clear_bit(cpu, &action->cpu_eoi_map) )
+         !cpu_test_and_clear(cpu, action->cpu_eoi_map) )
         return;
 
     sp = pending_eoi_sp(cpu);
@@ -285,7 +285,7 @@
         ASSERT(action->ack_type == ACKTYPE_EOI);
         ASSERT(desc->status & IRQ_GUEST);
         for ( i = 0; i < action->nr_guests; i++ )
-            clear_bit(vector_to_irq(vector), &action->guest[i]->pirq_mask);
+            clear_bit(vector_to_irq(vector), &action->guest[i]->pirq_mask[0]);
         action->in_flight = 0;
         spin_unlock(&desc->lock);
     }
@@ -311,7 +311,7 @@
         spin_lock_irq(&desc->lock);
 
         if ( !test_bit(d->pirq_to_evtchn[pirq], &s->evtchn_mask[0]) &&
-             test_and_clear_bit(pirq, &d->pirq_mask) )
+             test_and_clear_bit(pirq, &d->pirq_mask[0]) )
         {
             ASSERT(action->ack_type != ACKTYPE_NONE);
             if ( --action->in_flight == 0 )
@@ -322,7 +322,7 @@
             }
         }
 
-        if ( __test_and_clear_bit(cpu, &cpu_eoi_map) )
+        if ( cpu_test_and_clear(cpu, cpu_eoi_map) )
         {
             __set_eoi_ready(desc);
             spin_unlock(&desc->lock);
@@ -493,13 +493,13 @@
     switch ( action->ack_type )
     {
     case ACKTYPE_UNMASK:
-        if ( test_and_clear_bit(irq, &d->pirq_mask) &&
+        if ( test_and_clear_bit(irq, &d->pirq_mask[0]) &&
              (--action->in_flight == 0) )
             desc->handler->end(vector);
         break;
     case ACKTYPE_EOI:
         /* NB. If #guests == 0 then we clear the eoi_map later on. */
-        if ( test_and_clear_bit(irq, &d->pirq_mask) &&
+        if ( test_and_clear_bit(irq, &d->pirq_mask[0]) &&
              (--action->in_flight == 0) &&
              (action->nr_guests != 0) )
         {
@@ -511,7 +511,7 @@
         break;
     }
 
-    BUG_ON(test_bit(irq, &d->pirq_mask));
+    BUG_ON(test_bit(irq, &d->pirq_mask[0]));
 
     if ( action->nr_guests != 0 )
         goto out;
diff -r 0094c4c8c221 -r b550a93c6459 xen/include/xen/cpumask.h
--- a/xen/include/xen/cpumask.h Wed Apr 19 15:08:41 2006
+++ b/xen/include/xen/cpumask.h Wed Apr 19 17:24:49 2006
@@ -111,6 +111,12 @@
 static inline int __cpu_test_and_set(int cpu, cpumask_t *addr)
 {
        return test_and_set_bit(cpu, addr->bits);
+}
+
+#define cpu_test_and_clear(cpu, cpumask) __cpu_test_and_clear((cpu), 
&(cpumask))
+static inline int __cpu_test_and_clear(int cpu, cpumask_t *addr)
+{
+       return test_and_clear_bit(cpu, addr->bits);
 }
 
 #define cpus_and(dst, src1, src2) __cpus_and(&(dst), &(src1), &(src2), NR_CPUS)

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