perf kvm: Update the 'record' man page entry for new --guest/--host behavior
As we have changed the default behavior of 'perf kvm' to --guest
enabled, the parts of the man page that covers the 'record' subcommand
are outdated.
This patch updates it to show the correct output with
--host/--guest/neither/both of them.
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/3a3a9c1e05acb5a274d1d8369db5a4c6467d6276.1386197481.git.yangds.fnst@cn.fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/Documentation/perf-kvm.txt b/tools/perf/Documentation/perf-kvm.txt
index 7953227..96a9a1d 100644
--- a/tools/perf/Documentation/perf-kvm.txt
+++ b/tools/perf/Documentation/perf-kvm.txt
@@ -24,10 +24,17 @@
of an arbitrary workload.
'perf kvm record <command>' to record the performance counter profile
- of an arbitrary workload and save it into a perf data file. If both
- --host and --guest are input, the perf data file name is perf.data.kvm.
- If there is no --host but --guest, the file name is perf.data.guest.
- If there is no --guest but --host, the file name is perf.data.host.
+ of an arbitrary workload and save it into a perf data file. We set the
+ default behavior of perf kvm as --guest, so if neither --host nor --guest
+ is input, the perf data file name is perf.data.guest. If --host is input,
+ the perf data file name is perf.data.kvm. If you want to record data into
+ perf.data.host, please input --host --no-guest. The behaviors are shown as
+ following:
+ Default('') -> perf.data.guest
+ --host -> perf.data.kvm
+ --guest -> perf.data.guest
+ --host --guest -> perf.data.kvm
+ --host --no-guest -> perf.data.host
'perf kvm report' to display the performance counter profile information
recorded via perf kvm record.