From 1d84ae050cb1eb6bfbcd17a10de4e5804fdd4722 Mon Sep 17 00:00:00 2001
From: Charles Duffy <chaduffy@cisco.com>
Date: Tue, 2 Jun 2015 17:38:49 -0500
Subject: [PATCH] cgtop: IO readings are valid if any data is available, even
 if unchanged since last tick

Emit "0" rather than "-" if no change in IO values are seen for a process since
last tick, so long as accounting has registered content at all.
---
 src/cgtop/cgtop.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/cgtop/cgtop.c b/src/cgtop/cgtop.c
index 3a2842dac69..d630e358828 100644
--- a/src/cgtop/cgtop.c
+++ b/src/cgtop/cgtop.c
@@ -281,11 +281,10 @@ static int process(const char *controller, const char *path, Hashmap *a, Hashmap
                         yr = rd - g->io_input;
                         yw = wr - g->io_output;
 
-                        if (yr > 0 || yw > 0) {
+                        if (g->io_input > 0 || g->io_output > 0) {
                                 g->io_input_bps = (yr * 1000000000ULL) / x;
                                 g->io_output_bps = (yw * 1000000000ULL) / x;
                                 g->io_valid = true;
-
                         }
                 }