[Xen-changelog] Make perfc_valuea actually return the value it reads.

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

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 6a34629933201ac88dd7b02472b7303b05744d3e
# Parent  e0ec3587a2f03d14e55862311f0a0be9f833d6c0
Make perfc_valuea actually return the value it reads.
Signed-off-by: David Lively <dlively@xxxxxxxxxxxxxxx>
---
 xen/include/xen/perfc.h |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff -r e0ec3587a2f0 -r 6a3462993320 xen/include/xen/perfc.h
--- a/xen/include/xen/perfc.h   Tue May 30 12:32:07 2006 +0100
+++ b/xen/include/xen/perfc.h   Tue May 30 12:37:49 2006 +0100
@@ -56,10 +56,8 @@ extern struct perfcounter perfcounters;
 #define perfc_value(x)    atomic_read(&perfcounters.x[0])
 #define perfc_valuec(x)   atomic_read(&perfcounters.x[smp_processor_id()])
 #define perfc_valuea(x,y)                                               \
-    do {                                                                \
-        if ( (y) < (sizeof(perfcounters.x) / sizeof(*perfcounters.x)) ) \
-            atomic_read(&perfcounters.x[y]);                            \
-    } while ( 0 )
+    ( (y) < (sizeof(perfcounters.x) / sizeof(*perfcounters.x)) ?       \
+       atomic_read(&perfcounters.x[y]) : 0 )
 #define perfc_set(x,v)    atomic_set(&perfcounters.x[0], v)
 #define perfc_setc(x,v)   atomic_set(&perfcounters.x[smp_processor_id()], v)
 #define perfc_seta(x,y,v)                                               \

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