* [BUG] perf list: --help option not implemented
@ 2012-10-19 8:27 Stephane Eranian
2012-10-19 8:46 ` Jiri Olsa
0 siblings, 1 reply; 6+ messages in thread
From: Stephane Eranian @ 2012-10-19 8:27 UTC (permalink / raw)
To: LKML
Cc: Jiri Olsa, Peter Zijlstra, Arnaldo Carvalho de Melo, mingo, David Ahern
Jiri,
When I run perf list, I see:
$ perf list
..
rNNN [Raw hardware
event descriptor]
cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware
event descriptor]
(see 'perf list --help' on how to encode it)
But:
$ perf list --help
$
Shows nothing. Looked at the code and I don't see where you handle the --help
option. You need some help to figure out what the modifiers are.
Am I missing something here?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [BUG] perf list: --help option not implemented
2012-10-19 8:27 [BUG] perf list: --help option not implemented Stephane Eranian
@ 2012-10-19 8:46 ` Jiri Olsa
2012-10-22 7:12 ` Namhyung Kim
0 siblings, 1 reply; 6+ messages in thread
From: Jiri Olsa @ 2012-10-19 8:46 UTC (permalink / raw)
To: Stephane Eranian
Cc: LKML, Peter Zijlstra, Arnaldo Carvalho de Melo, mingo, David Ahern
On Fri, Oct 19, 2012 at 10:27:35AM +0200, Stephane Eranian wrote:
> Jiri,
>
> When I run perf list, I see:
>
> $ perf list
> ..
> rNNN [Raw hardware
> event descriptor]
> cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware
> event descriptor]
> (see 'perf list --help' on how to encode it)
>
> But:
> $ perf list --help
> $
>
> Shows nothing. Looked at the code and I don't see where you handle the --help
> option. You need some help to figure out what the modifiers are.
>
> Am I missing something here?
nope, it's not working.. added on my todo list ;-)
thanks,
jirka
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [BUG] perf list: --help option not implemented
2012-10-19 8:46 ` Jiri Olsa
@ 2012-10-22 7:12 ` Namhyung Kim
2012-10-22 8:32 ` Jiri Olsa
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Namhyung Kim @ 2012-10-22 7:12 UTC (permalink / raw)
To: Jiri Olsa
Cc: Stephane Eranian, LKML, Peter Zijlstra, Arnaldo Carvalho de Melo,
mingo, David Ahern
Hi,
On Fri, 19 Oct 2012 10:46:36 +0200, Jiri Olsa wrote:
> On Fri, Oct 19, 2012 at 10:27:35AM +0200, Stephane Eranian wrote:
>> Jiri,
>>
>> When I run perf list, I see:
>>
>> $ perf list
>> ..
>> rNNN [Raw hardware
>> event descriptor]
>> cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware
>> event descriptor]
>> (see 'perf list --help' on how to encode it)
>>
>> But:
>> $ perf list --help
>> $
>>
>> Shows nothing. Looked at the code and I don't see where you handle the --help
>> option. You need some help to figure out what the modifiers are.
>>
>> Am I missing something here?
>
> nope, it's not working.. added on my todo list ;-)
I think it worked.
It seems that commit cc5848213329 ("perf help: Remove use of die and
handle errors") caused the problem - it changed the initial value of
'help_format' from HELP_FORMAT_MAN to HELP_FORMAT_NONE.
The following patch works well for me:
diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 411ee5664e98..178b88ae3d2f 100644
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -414,7 +414,7 @@ static int show_html_page(const char *perf_cmd)
int cmd_help(int argc, const char **argv, const char *prefix __maybe_unused)
{
bool show_all = false;
- enum help_format help_format = HELP_FORMAT_NONE;
+ enum help_format help_format = HELP_FORMAT_MAN;
struct option builtin_help_options[] = {
OPT_BOOLEAN('a', "all", &show_all, "print all available commands"),
OPT_SET_UINT('m', "man", &help_format, "show man page", HELP_FORMAT_MAN),
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [BUG] perf list: --help option not implemented
2012-10-22 7:12 ` Namhyung Kim
@ 2012-10-22 8:32 ` Jiri Olsa
2012-10-22 13:26 ` David Ahern
2012-10-24 6:03 ` [tip:perf/urgent] perf help: Fix --help for builtins tip-bot for Namhyung Kim
2 siblings, 0 replies; 6+ messages in thread
From: Jiri Olsa @ 2012-10-22 8:32 UTC (permalink / raw)
To: Namhyung Kim
Cc: Stephane Eranian, LKML, Peter Zijlstra, Arnaldo Carvalho de Melo,
mingo, David Ahern
On Mon, Oct 22, 2012 at 04:12:23PM +0900, Namhyung Kim wrote:
> Hi,
>
> On Fri, 19 Oct 2012 10:46:36 +0200, Jiri Olsa wrote:
> > On Fri, Oct 19, 2012 at 10:27:35AM +0200, Stephane Eranian wrote:
> >> Jiri,
> >>
> >> When I run perf list, I see:
> >>
> >> $ perf list
> >> ..
> >> rNNN [Raw hardware
> >> event descriptor]
> >> cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware
> >> event descriptor]
> >> (see 'perf list --help' on how to encode it)
> >>
> >> But:
> >> $ perf list --help
> >> $
> >>
> >> Shows nothing. Looked at the code and I don't see where you handle the --help
> >> option. You need some help to figure out what the modifiers are.
> >>
> >> Am I missing something here?
> >
> > nope, it's not working.. added on my todo list ;-)
>
> I think it worked.
removed from my todo list ;)
seems like your patch adds man page as default for 'perf <command> --help'
sooo git-like ;) I dont mind..
jirka
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [BUG] perf list: --help option not implemented
2012-10-22 7:12 ` Namhyung Kim
2012-10-22 8:32 ` Jiri Olsa
@ 2012-10-22 13:26 ` David Ahern
2012-10-24 6:03 ` [tip:perf/urgent] perf help: Fix --help for builtins tip-bot for Namhyung Kim
2 siblings, 0 replies; 6+ messages in thread
From: David Ahern @ 2012-10-22 13:26 UTC (permalink / raw)
To: Namhyung Kim
Cc: Jiri Olsa, Stephane Eranian, LKML, Peter Zijlstra,
Arnaldo Carvalho de Melo, mingo
On 10/22/12 1:12 AM, Namhyung Kim wrote:
> It seems that commit cc5848213329 ("perf help: Remove use of die and
> handle errors") caused the problem - it changed the initial value of
> 'help_format' from HELP_FORMAT_MAN to HELP_FORMAT_NONE.
>
> The following patch works well for me:
>
> diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
> index 411ee5664e98..178b88ae3d2f 100644
> --- a/tools/perf/builtin-help.c
> +++ b/tools/perf/builtin-help.c
> @@ -414,7 +414,7 @@ static int show_html_page(const char *perf_cmd)
> int cmd_help(int argc, const char **argv, const char *prefix __maybe_unused)
> {
> bool show_all = false;
> - enum help_format help_format = HELP_FORMAT_NONE;
> + enum help_format help_format = HELP_FORMAT_MAN;
> struct option builtin_help_options[] = {
> OPT_BOOLEAN('a', "all", &show_all, "print all available commands"),
> OPT_SET_UINT('m', "man", &help_format, "show man page", HELP_FORMAT_MAN),
>
D'oh. Thanks for debugging, Namhyung.
Acked-by/Tested-by: David Ahern <dsahern@gmail.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [tip:perf/urgent] perf help: Fix --help for builtins
2012-10-22 7:12 ` Namhyung Kim
2012-10-22 8:32 ` Jiri Olsa
2012-10-22 13:26 ` David Ahern
@ 2012-10-24 6:03 ` tip-bot for Namhyung Kim
2 siblings, 0 replies; 6+ messages in thread
From: tip-bot for Namhyung Kim @ 2012-10-24 6:03 UTC (permalink / raw)
To: linux-tip-commits
Cc: acme, linux-kernel, eranian, hpa, mingo, peterz, namhyung, jolsa,
dsahern, tglx
Commit-ID: 670ab5d21c7e168c89a36fdd2c69fb7af63d35a1
Gitweb: http://git.kernel.org/tip/670ab5d21c7e168c89a36fdd2c69fb7af63d35a1
Author: Namhyung Kim <namhyung@kernel.org>
AuthorDate: Mon, 22 Oct 2012 16:12:23 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 22 Oct 2012 12:35:49 -0200
perf help: Fix --help for builtins
It seems that commit cc5848213329 ("perf help: Remove use of die and
handle errors") caused the problem - it changed the initial value of
'help_format' from HELP_FORMAT_MAN to HELP_FORMAT_NONE.
This broke the --help option for all builtins, that would produce no
output, while 'man perf-top' would work it MANPATH is properly setup.
Reported-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: David Ahern <dsahern@gmail.com>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/87r4orj7zc.fsf@sejong.aot.lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-help.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 411ee56..178b88a 100644
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -414,7 +414,7 @@ static int show_html_page(const char *perf_cmd)
int cmd_help(int argc, const char **argv, const char *prefix __maybe_unused)
{
bool show_all = false;
- enum help_format help_format = HELP_FORMAT_NONE;
+ enum help_format help_format = HELP_FORMAT_MAN;
struct option builtin_help_options[] = {
OPT_BOOLEAN('a', "all", &show_all, "print all available commands"),
OPT_SET_UINT('m', "man", &help_format, "show man page", HELP_FORMAT_MAN),
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-10-24 6:04 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-10-19 8:27 [BUG] perf list: --help option not implemented Stephane Eranian
2012-10-19 8:46 ` Jiri Olsa
2012-10-22 7:12 ` Namhyung Kim
2012-10-22 8:32 ` Jiri Olsa
2012-10-22 13:26 ` David Ahern
2012-10-24 6:03 ` [tip:perf/urgent] perf help: Fix --help for builtins tip-bot for Namhyung Kim
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