rcuja: print info about allocated/freed/fallback nodes

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/rcuja/rcuja.c b/rcuja/rcuja.c
index 56a6e566261b955065e785c1c36fa29ce44ba89e..e59ebe395f465dc9c7646a931de9b01411da012b 100644 (file)
--- a/rcuja/rcuja.c
+++ b/rcuja/rcuja.c
@@ -246,6 +246,8 @@ enum ja_recompact {
 
 static
 unsigned long node_fallback_count_distribution[JA_ENTRY_PER_NODE];
+static
+unsigned long nr_nodes_allocated, nr_nodes_freed;
 
 static
 struct cds_ja_inode *_ja_node_mask_ptr(struct cds_ja_inode_flag *node)
@@ -300,12 +302,14 @@ struct cds_ja_inode *alloc_cds_ja_node(const struct cds_ja_type *ja_type)
                return NULL;
        }
        memset(p, 0, len);
+       uatomic_inc(&nr_nodes_allocated);
        return p;
 }
 
 void free_cds_ja_node(struct cds_ja_inode *node)
 {
        free(node);
+       uatomic_inc(&nr_nodes_freed);
 }
 
 #define __JA_ALIGN_MASK(v, mask)       (((v) + (mask)) & ~(mask))
@@ -2412,6 +2416,10 @@ int cds_ja_destroy(struct cds_ja *ja,
                fprintf(stderr,
                        "[warning] RCU Judy Array used %lu fallback node(s)\n",
                        uatomic_read(&ja->nr_fallback));
+       fprintf(stderr, "Nodes allocated: %lu, Nodes freed: %lu. Fallback ratio: %g\n",
+               uatomic_read(&nr_nodes_allocated),
+               uatomic_read(&nr_nodes_freed),
+               (double) uatomic_read(&ja->nr_fallback) / (double) uatomic_read(&nr_nodes_allocated));
        print_debug_fallback_distribution();
        free(ja);
        return 0;