tcg: move tb_ctx.tb_phys_invalidate_count to tcg_ctx

Thereby making it per-TCGContext. Once we remove tb_lock, this will
avoid an atomic increment every time a TB is invalidated.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 17 insertions, 0 deletions

diff --git a/tcg/tcg.c b/tcg/tcg.c
index 62e3391020..1d1dfd7f7c 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -791,6 +791,20 @@ size_t tcg_code_capacity(void)
     return capacity;
 }
 
+size_t tcg_tb_phys_invalidate_count(void)
+{
+    unsigned int n_ctxs = atomic_read(&n_tcg_ctxs);
+    unsigned int i;
+    size_t total = 0;
+
+    for (i = 0; i < n_ctxs; i++) {
+        const TCGContext *s = atomic_read(&tcg_ctxs[i]);
+
+        total += atomic_read(&s->tb_phys_invalidate_count);
+    }
+    return total;
+}
+
 /* pool based memory allocation */
 void *tcg_malloc_internal(TCGContext *s, int size)
 {
diff --git a/tcg/tcg.h b/tcg/tcg.h
index 1e6df1906f..e49b289ba1 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -695,6 +695,8 @@ struct TCGContext {
     /* Threshold to flush the translated code buffer.  */
     void *code_gen_highwater;
 
+    size_t tb_phys_invalidate_count;
+
     /* Track which vCPU triggers events */
     CPUState *cpu;                      /* *_trans */
 
@@ -868,6 +870,7 @@ size_t tcg_code_capacity(void);
 
 void tcg_tb_insert(TranslationBlock *tb);
 void tcg_tb_remove(TranslationBlock *tb);
+size_t tcg_tb_phys_invalidate_count(void);
 TranslationBlock *tcg_tb_lookup(uintptr_t tc_ptr);
 void tcg_tb_foreach(GTraverseFunc func, gpointer user_data);
 size_t tcg_nb_tbs(void);