[PATCH 2/2] powerpc/mm: Trace tlbia instruction

[Christophe Leroy]

Add a trace point for tlbia (Translation Lookaside Buffer Invalidate
All) instruction.

Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
 arch/powerpc/include/asm/trace.h | 15 +++++++++++++++
 arch/powerpc/mm/mmu_decl.h       |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/arch/powerpc/include/asm/trace.h b/arch/powerpc/include/asm/trace.h
index 33f3b479138b..d1d63b173dd7 100644
--- a/arch/powerpc/include/asm/trace.h
+++ b/arch/powerpc/include/asm/trace.h
@@ -202,6 +202,21 @@ TRACE_EVENT(tlbie,
                __entry->r)
 );
 
+TRACE_EVENT(tlbia,
+
+       TP_PROTO(unsigned long lpid),
+       TP_ARGS(lpid),
+       TP_STRUCT__entry(
+               __field(unsigned long, lpid)
+               ),
+
+       TP_fast_assign(
+               __entry->lpid = lpid;
+               ),
+
+       TP_printk("lpid=%ld", __entry->lpid)
+);
+
 #endif /* _TRACE_POWERPC_H */
 
 #undef TRACE_INCLUDE_PATH
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index b9991e0c61a2..d4ae7b5d45fe 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -32,10 +32,12 @@
 static inline void _tlbil_all(void)
 {
        asm volatile ("sync; tlbia; isync" : : : "memory");
+       trace_tlbia(MMU_NO_CONTEXT);
 }
 static inline void _tlbil_pid(unsigned int pid)
 {
        asm volatile ("sync; tlbia; isync" : : : "memory");
+       trace_tlbia(pid);
 }
 #define _tlbil_pid_noind(pid)  _tlbil_pid(pid)
 
-- 
2.13.3