arch: Pass faults by const reference where possible

This patch changes how faults are passed between methods in an attempt
to copy as few reference-counting pointer instances as possible. This
should avoid unecessary copies being created, contributing to the
increment/decrement of the reference counters.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/cpu/o3/cpu.hh b/src/cpu/o3/cpu.hh
index f5f9897e7..cfed216c3 100644
--- a/src/cpu/o3/cpu.hh
+++ b/src/cpu/o3/cpu.hh
@@ -498,7 +498,7 @@ class FullO3CPU : public BaseO3CPU
     { return globalSeqNum++; }
 
     /** Traps to handle given fault. */
-    void trap(Fault fault, ThreadID tid, StaticInstPtr inst);
+    void trap(const Fault &fault, ThreadID tid, StaticInstPtr inst);
 
     /** HW return from error interrupt. */
     Fault hwrei(ThreadID tid);
@@ -509,7 +509,7 @@ class FullO3CPU : public BaseO3CPU
     Fault getInterrupts();
 
     /** Processes any an interrupt fault. */
-    void processInterrupts(Fault interrupt);
+    void processInterrupts(const Fault &interrupt);
 
     /** Halts the CPU. */
     void halt() { panic("Halt not implemented!\n"); }