From 592b801e5cc13422eedf2bc81bb27c12e2da3d9e Mon Sep 17 00:00:00 2001
From: David Hildenbrand <david@redhat.com>
Date: Tue, 17 Oct 2017 19:16:05 +0200
Subject: [PATCH 60/69] tools/kvm_stat: add '-f help' to get the available
 event list

RH-Author: David Hildenbrand <david@redhat.com>
Message-id: <20171017191605.2378-40-david@redhat.com>
Patchwork-id: 77345
O-Subject: [RHEL-7.5 qemu-kvm-rhev PATCH 39/39] tools/kvm_stat: add '-f help' to get the available event list
Bugzilla: 1497137
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>

Upstream-status: linux.git 67fbcd62f54d4503e3dc63b68af1c6757b74e050

commit 67fbcd62f54d4503e3dc63b68af1c6757b74e050
Author: Lin Ma <lma@suse.com>
Date:   Tue Jul 25 19:05:54 2017 +0800

    tools/kvm_stat: add '-f help' to get the available event list

    Signed-off-by: Lin Ma <lma@suse.com>
    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 scripts/kvm/kvm_stat | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
index 5704044..32283d8 100755
--- a/scripts/kvm/kvm_stat
+++ b/scripts/kvm/kvm_stat
@@ -474,7 +474,7 @@ class Provider(object):
     @staticmethod
     def is_field_wanted(fields_filter, field):
         """Indicate whether field is valid according to fields_filter."""
-        if not fields_filter:
+        if not fields_filter or fields_filter == "help":
             return True
         return re.match(fields_filter, field) is not None
 
@@ -1496,7 +1496,8 @@ Press any other key to refresh statistics immediately.
                          action='store',
                          default=DEFAULT_REGEX,
                          dest='fields',
-                         help='fields to display (regex)',
+                         help='''fields to display (regex)
+                                 "-f help" for a list of available events''',
                          )
     optparser.add_option('-p', '--pid',
                          action='store',
@@ -1559,6 +1560,17 @@ def main():
 
     stats = Stats(options)
 
+    if options.fields == "help":
+        event_list = "\n"
+        s = stats.get()
+        for key in s.keys():
+            if key.find('(') != -1:
+                key = key[0:key.find('(')]
+            if event_list.find('\n' + key + '\n') == -1:
+                event_list += key + '\n'
+        sys.stdout.write(event_list)
+        return ""
+
     if options.log:
         log(stats)
     elif not options.once:
-- 
1.8.3.1