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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/builtin-kvm.c
parent1dbfa9387b397f2c4b8c65411b3e3fdf9284d2b1 (diff)
downloadlinux-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/builtin-kvm.c')
-rw-r--r--tools/perf/builtin-kvm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index f8bf5f244d77..d9cc0e3f284f 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -1690,6 +1690,8 @@ int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused)
"file", "file saving guest os /proc/kallsyms"),
OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules,
"file", "file saving guest os /proc/modules"),
+ OPT_INCR('v', "verbose", &verbose,
+ "be more verbose (show counter open errors, etc)"),
OPT_END()
};