From be03ea3b77387db36617d71d60ee182a866fb9cd Mon Sep 17 00:00:00 2001
From: Stefan Raspl <raspl@linux.vnet.ibm.com>
Date: Fri, 10 Mar 2017 13:40:09 +0100
Subject: [PATCH] tools/kvm_stat: remove pid filter on empty input
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Improve consistency in the interactive dialogue for pid filtering by
removing any filters on empty input (in addition to entering 0).

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
---
 tools/kvm/kvm_stat/kvm_stat | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index 95ffa9a4b044..9e9eb983f6fe 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -991,10 +991,13 @@ class Tui(object):
             curses.noecho()
 
             try:
-                pid = int(pid)
-                if pid != 0 and not os.path.isdir(os.path.join('/proc/',
-                                                               str(pid))):
-                    continue
+                if len(pid) > 0:
+                    pid = int(pid)
+                    if pid != 0 and not os.path.isdir(os.path.join('/proc/',
+                                                                   str(pid))):
+                        continue
+                else:
+                    pid = 0
                 self.refresh_header(pid)
                 self.update_pid(pid)
                 break
-- 
2.20.1