[Qemu-devel] [PATCH v1 2/3] cpus: dump TLB flush counts as trace event

[Alex Bennée]

This can be pre-processed later from the trace file.

Signed-off-by: Alex Bennée <address@hidden>
---
 cpus.c       | 6 ++++++
 trace-events | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/cpus.c b/cpus.c
index 740b8dc3f8..fae7344df5 100644
--- a/cpus.c
+++ b/cpus.c
@@ -50,6 +50,8 @@
 #include "qapi-event.h"
 #include "hw/nmi.h"
 #include "sysemu/replay.h"
+#include "exec/cputlb.h"
+#include "trace-root.h"
 
 #ifdef CONFIG_LINUX
 
@@ -1252,6 +1254,10 @@ static int tcg_cpu_exec(CPUState *cpu)
     int64_t ti;
 #endif
 
+    trace_tlb_flush_stats(tlb_self_flush_count,
+                          tlb_async_flush_count,
+                          tlb_synced_flush_count);
+
 #ifdef CONFIG_PROFILER
     ti = profile_getclock();
 #endif
diff --git a/trace-events b/trace-events
index b07a09ba95..fc23e15d25 100644
--- a/trace-events
+++ b/trace-events
@@ -94,6 +94,9 @@ disable exec_tb(void *tb, uintptr_t pc) "tb:%p pc=0x%"PRIxPTR
 disable exec_tb_nocache(void *tb, uintptr_t pc) "tb:%p pc=0x%"PRIxPTR
 disable exec_tb_exit(void *last_tb, unsigned int flags) "tb:%p flags=%x"
 
+# cpus.c
+tlb_flush_stats(int self, int async, int synced) "self:%d async:%d synced:%d"
+
 # translate-all.c
 translate_block(void *tb, uintptr_t pc, uint8_t *tb_code) "tb:%p, 
pc:0x%"PRIxPTR", tb_code:%p"
 
-- 
2.11.0