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File 0019-tools-kvm_stat-add-f-help-to-get-the-available-event.patch of Package kvm_stat

From 93fca877853b89ccf7243c09b9e1bc271e5a3c8d Mon Sep 17 00:00:00 2001
From: Lin Ma <lma@suse.com>
Date: Tue, 25 Jul 2017 19:05:54 +0800
Subject: [PATCH 19/43] 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>
(cherry picked from commit 67fbcd62f54d4503e3dc63b68af1c6757b74e050)
[FL: FATE#325017]
Signed-off-by: Fei Li <fli@suse.com>
---
 tools/kvm/kvm_stat/kvm_stat | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index b8f0634baf28..218b7396f0fe 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/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
 
@@ -1499,7 +1499,8 @@ 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',
@@ -1562,6 +1563,17 @@ 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:
-- 
2.12.3