Commit ed086d5b authored Dec 04, 2013 by Dongsheng Yang Committed by Arnaldo Carvalho de Melo Dec 04, 2013

perf kvm: Add more detail about buildid-list in man page



As the buildid is read from /sys/kernel/notes, then if we use perf kvm
buildid-list with a perf data file captured by perf kvm record with
--guestkallsyms and --guestmodules, there is no result in output.

This patch add a explanation about it and add a limit of using perf kvm
buildid-list.

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/d605a805486340b53bc261aa64d7632ad0a8cf53.1386197481.git.yangds.fnst@cn.fujitsu.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 9c105fbc

tools/perf/Documentation/perf-kvm.txt

+3 −1

Original line number	Diff line number	Diff line
		@@ -37,7 +37,9 @@ There are a couple of variants of perf kvm:

		'perf kvm buildid-list' to display the buildids found in a perf data file,
		so that other tools can be used to fetch packages with matching symbol tables
		for use by perf report.
		for use by perf report. As buildid is read from /sys/kernel/notes in os, then
		if you want to list the buildid for guest, please make sure your perf data file
		was captured with --guestmount in perf kvm record.

		'perf kvm stat <command>' to run a command and gather performance counter
		statistics.