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authorDongsheng Yang <yangds.fnst@cn.fujitsu.com>2013-12-09 12:15:11 -0500
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-12-09 15:19:11 -0300
commit100b907350c87aa1f3b5dbd95bac3ad5aad3e108 (patch)
treecc0efec601b600fa65316bdfcda0a261e6231a58 /tools/perf/Documentation
parent1dbfa9387b397f2c4b8c65411b3e3fdf9284d2b1 (diff)
downloadop-kernel-dev-100b907350c87aa1f3b5dbd95bac3ad5aad3e108.zip
op-kernel-dev-100b907350c87aa1f3b5dbd95bac3ad5aad3e108.tar.gz
perf kvm: Introduce option -v for perf kvm command.
As there is no -v option for perf kvm, the all debug message for perf kvm will nerver be printed out to user. Example: # perf kvm --guestmount /tmp/guestmount/ record -a Not enough memory for reading perf file header It is confusing message for newbies such as me. With this patch applied, we can use -v option to get the detail. Example: # perf kvm --guestmount /tmp/guestmount/ record -a -v Can't access file /tmp/guestmount//15069/proc/kallsyms Not enough memory for reading perf file header Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1386609311-23889-1-git-send-email-yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
-rw-r--r--tools/perf/Documentation/perf-kvm.txt7
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-kvm.txt b/tools/perf/Documentation/perf-kvm.txt
index 96a9a1d..52276a6 100644
--- a/tools/perf/Documentation/perf-kvm.txt
+++ b/tools/perf/Documentation/perf-kvm.txt
@@ -10,9 +10,9 @@ SYNOPSIS
[verse]
'perf kvm' [--host] [--guest] [--guestmount=<path>
[--guestkallsyms=<path> --guestmodules=<path> | --guestvmlinux=<path>]]
- {top|record|report|diff|buildid-list}
+ {top|record|report|diff|buildid-list} [<options>]
'perf kvm' [--host] [--guest] [--guestkallsyms=<path> --guestmodules=<path>
- | --guestvmlinux=<path>] {top|record|report|diff|buildid-list|stat}
+ | --guestvmlinux=<path>] {top|record|report|diff|buildid-list|stat} [<options>]
'perf kvm stat [record|report|live] [<options>]
DESCRIPTION
@@ -93,6 +93,9 @@ OPTIONS
kernel module information. Users copy it out from guest os.
--guestvmlinux=<path>::
Guest os kernel vmlinux.
+-v::
+--verbose::
+ Be more verbose (show counter open errors, etc).
STAT REPORT OPTIONS
-------------------
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