powerpc: tracing: Avoid tracepoint duplication with DECLARE_EVENT_CLASS

irq_entry, irq_exit, timer_interrupt_entry and timer_interrupt_exit
all do the same thing so use DECLARE_EVENT_CLASS to avoid duplicating
everything 4 times.

This saves quite a lot of space in both instruction text and data:

   text    data     bss     dec     hex filename
   9265   19622      16   28903    70e7 arch/powerpc/kernel/irq.o
   6817   19019      16   25852    64fc arch/powerpc/kernel/irq.o

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 11 insertions, 34 deletions

diff --git a/arch/powerpc/include/asm/trace.h b/arch/powerpc/include/asm/trace.h
index cbe2297d68b6..5712f06905a9 100644
--- a/arch/powerpc/include/asm/trace.h
+++ b/arch/powerpc/include/asm/trace.h
@@ -8,7 +8,7 @@
 
 struct pt_regs;
 
-TRACE_EVENT(irq_entry,
+DECLARE_EVENT_CLASS(ppc64_interrupt_class,
 
         TP_PROTO(struct pt_regs *regs),
 
@@ -25,55 +25,32 @@ TRACE_EVENT(irq_entry,
         TP_printk("pt_regs=%p", __entry->regs)
 );
 
-TRACE_EVENT(irq_exit,
+DEFINE_EVENT(ppc64_interrupt_class, irq_entry,
 
         TP_PROTO(struct pt_regs *regs),
 
-        TP_ARGS(regs),
-
-        TP_STRUCT__entry(
-                __field(struct pt_regs *, regs)
-        ),
-
-        TP_fast_assign(
-                __entry->regs = regs;
-        ),
-
-        TP_printk("pt_regs=%p", __entry->regs)
+        TP_ARGS(regs)
 );
 
-TRACE_EVENT(timer_interrupt_entry,
+DEFINE_EVENT(ppc64_interrupt_class, irq_exit,
 
         TP_PROTO(struct pt_regs *regs),
 
-        TP_ARGS(regs),
-
-        TP_STRUCT__entry(
-                __field(struct pt_regs *, regs)
-        ),
-
-        TP_fast_assign(
-                __entry->regs = regs;
-        ),
-
-        TP_printk("pt_regs=%p", __entry->regs)
+        TP_ARGS(regs)
 );
 
-TRACE_EVENT(timer_interrupt_exit,
+DEFINE_EVENT(ppc64_interrupt_class, timer_interrupt_entry,
 
         TP_PROTO(struct pt_regs *regs),
 
-        TP_ARGS(regs),
+        TP_ARGS(regs)
+);
 
-        TP_STRUCT__entry(
-                __field(struct pt_regs *, regs)
-        ),
+DEFINE_EVENT(ppc64_interrupt_class, timer_interrupt_exit,
 
-        TP_fast_assign(
-                __entry->regs = regs;
-        ),
+        TP_PROTO(struct pt_regs *regs),
 
-        TP_printk("pt_regs=%p", __entry->regs)
+        TP_ARGS(regs)
 );
 
 #ifdef CONFIG_PPC_PSERIES