luci-app-statistics: processes: fix graph visibility

Fix graph visibility on processes page based on plugin
instance. The overview instance is empty, while monitored
processes have their own instances.

Original version of the patch created by @koblack and
discussed in #1021

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
(cherry picked from commit 0a6ce204234c9485549e290230e51484b1fceb64)

diff --git a/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/processes.lua b/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/processes.lua
index 323c3c2..62d0545 100644 (file)
--- a/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/processes.lua
+++ b/applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/processes.lua
@@ -5,8 +5,8 @@ module("luci.statistics.rrdtool.definitions.processes", package.seeall)
 
 function rrdargs( graph, plugin, plugin_instance, dtype )
 
+    if  plugin_instance == "" then
        return {
-               {
                        title = "%H: Processes",
                        vlabel = "Processes/s",
                        data = {
@@ -26,8 +26,9 @@ function rrdargs( graph, plugin, plugin_instance, dtype )
                                        ps_state_zombies  = { color = "ff0000", title = "Zombies" }
                                }
                        }
-               },
-
+       }
+    else
+       return {
                {
                        title = "%H: CPU time used by %pi",
                        vlabel = "Jiffies",
@@ -112,4 +113,5 @@ function rrdargs( graph, plugin, plugin_instance, dtype )
                        }
                }
        }
+    end
 end