tools/kvm_stat: rework command line sequence and message texts

Make sure command line arguments are sorted alphabetically
everywhere, and adjusted existing texts for interactive command 's' to
become consistent with the long form --set-delay.
Throwing in some PEP8 fixes (all cosmetics) for good measure.
Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Message-Id: <20200306114250.57585-2-raspl@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/kvm/kvm_stat/kvm_stat

@@ -1336,8 +1336,8 @@ class Tui(object):
         msg = ''
         while True:
             self.screen.erase()
-            self.screen.addstr(0, 0, 'Set update interval (defaults to %.1fs).' %
-                               DELAY_DEFAULT, curses.A_BOLD)
+            self.screen.addstr(0, 0, 'Set update interval (defaults to %.1fs).'
+                               % DELAY_DEFAULT, curses.A_BOLD)
             self.screen.addstr(4, 0, msg)
             self.screen.addstr(2, 0, 'Change delay from %.1fs to ' %
                                self._delay_regular)
@@ -1545,7 +1545,7 @@ Interactive Commands:
    p     filter by PID
    q     quit
    r     reset stats
-   s     set update interval
+   s     set update interval (value range: 0.1-25.5 secs)
    x     toggle reporting of stats for individual child trace events
 Press any other key to refresh statistics immediately.
 """ % (PATH_DEBUGFS_KVM, PATH_DEBUGFS_TRACING)
@@ -1711,5 +1711,6 @@ def main():
     else:
         batch(stats)
 
+
 if __name__ == "__main__":
     main()

tools/kvm/kvm_stat/kvm_stat.txt

@@ -49,7 +49,7 @@ INTERACTIVE COMMANDS
 
 *r*::	reset stats
 
-*s*::   set update interval
+*s*::   set delay between refreshs
 
 *x*::	toggle reporting of stats for child trace events
  ::     *Note*: The stats for the parents summarize the respective child trace
@@ -64,38 +64,38 @@ OPTIONS
 --batch::
 	run in batch mode for one second
 
--l::
---log::
-	run in logging mode (like vmstat)
-
--t::
---tracepoints::
-	retrieve statistics from tracepoints
-
 -d::
 --debugfs::
 	retrieve statistics from debugfs
 
--i::
---debugfs-include-past::
-	include all available data on past events for debugfs
-
--p<pid>::
---pid=<pid>::
-	limit statistics to one virtual machine (pid)
+-f<fields>::
+--fields=<fields>::
+        fields to display (regex), "-f help" for a list of available events
 
 -g<guest>::
 --guest=<guest_name>::
         limit statistics to one virtual machine (guest name)
 
--f<fields>::
---fields=<fields>::
-	fields to display (regex), "-f help" for a list of available events
-
 -h::
 --help::
         show help message
 
+-i::
+--debugfs-include-past::
+	include all available data on past events for debugfs
+
+-l::
+--log::
+        run in logging mode (like vmstat)
+
+-p<pid>::
+--pid=<pid>::
+	limit statistics to one virtual machine (pid)
+
+-t::
+--tracepoints::
+        retrieve statistics from tracepoints
+
 SEE ALSO
 --------
 'perf'(1), 'trace-cmd'(1)