diff mbox series

[v2,2/2] powerpc/mm: Trace tlbia instruction

Message ID af14d8ac7ed21a3271da6e4767a0277c16fd100e.1521641523.git.christophe.leroy@c-s.fr (mailing list archive)
State Accepted
Commit 8114c36ea6486aba2269d0590c5d553108ee9558
Headers show
Series [v2,1/2] powerpc/mm: Add missing tracepoint for tlbie | expand

Commit Message

Christophe Leroy March 21, 2018, 2:17 p.m. UTC 
Add a trace point for tlbia (Translation Lookaside Buffer Invalidate
All) instruction.

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

Patch

diff --git a/arch/powerpc/include/asm/trace.h b/arch/powerpc/include/asm/trace.h
index 33f3b479138b..0165a424308d 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 id),
+	TP_ARGS(id),
+	TP_STRUCT__entry(
+		__field(unsigned long, id)
+		),
+
+	TP_fast_assign(
+		__entry->id = id;
+		),
+
+	TP_printk("ctx.id=0x%lx", __entry->id)
+);
+
 #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 107033cc4dcf..8f5483e415dd 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)