graph: bump prio end value by ytick delta, if all zeroes

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/graph.c b/graph.c
index 2f00dab4361d4280f48da66c9a84102ee173b82b..a61ce4bc0db9268884a1a8008f4354f9daffe944 100644 (file)
--- a/graph.c
+++ b/graph.c
@@ -682,8 +682,8 @@ void graph_add_label(struct graph *bg, const char *label)
        INIT_PRIO_TREE_ROOT(&i->prio_tree);
 }
 
-static void graph_label_add_value(struct graph_label *i, void *value,
-                                 const char *tooltip)
+static void graph_label_add_value(struct graph *g, struct graph_label *i,
+                                 void *value, const char *tooltip)
 {
        struct graph_value *x;
 
@@ -707,8 +707,10 @@ static void graph_label_add_value(struct graph_label *i, void *value,
                INIT_PRIO_TREE_NODE(&x->node);
                x->node.start = miny;
                x->node.last = maxy;
-               if (x->node.last == x->node.start)
-                       x->node.last++;
+               if (x->node.last == x->node.start) {
+                       x->node.last += fabs(g->ytick_delta);
+                       printf("last bumped to %lu\n", x->node.last);
+               }
 
                /*
                 * If ret != &x->node, we have an alias. Since the values
@@ -760,7 +762,7 @@ int graph_add_data(struct graph *bg, const char *label, const double value)
        i = graph_find_label(bg, label);
        if (!i)
                return -1;
-       graph_label_add_value(i, d, NULL);
+       graph_label_add_value(bg, i, d, NULL);
        return 0;
 }
 
@@ -778,7 +780,7 @@ int graph_add_xy_data(struct graph *bg, const char *label,
        if (!i)
                return -1;
 
-       graph_label_add_value(i, xy, tooltip);
+       graph_label_add_value(bg, i, xy, tooltip);
        return 0;
 }