Andi Kleen [ak@linux.intel.com] wrote:
| On Fri, Jun 05, 2015 at 12:21:38PM +0200, Jiri Olsa wrote:
| > On Thu, Jun 04, 2015 at 11:27:23PM -0700, Sukadev Bhattiprolu wrote:
| > 
| > SNIP
| > 
| > > ---
| > >  tools/perf/builtin-list.c |   11 ++++++++---
| > >  1 file changed, 8 insertions(+), 3 deletions(-)
| > > 
| > > diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
| > > index 3f058f7..d0f7a18 100644
| > > --- a/tools/perf/builtin-list.c
| > > +++ b/tools/perf/builtin-list.c
| > > @@ -22,10 +22,13 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
| > >  {
| > >  	int i;
| > >  	bool raw_dump = false;
| > > +	bool long_desc_flag = false;
| > >  	struct option list_options[] = {
| > >  		OPT_BOOLEAN(0, "raw-dump", &raw_dump, "Dump raw events"),
| > >  		OPT_BOOLEAN('d', "desc", &desc_flag,
| > >  			    "Print extra event descriptions. --no-desc to not print."),
| > > +		OPT_BOOLEAN('d', "long-desc", &long_desc_flag,
| > > +			    "Print longer event descriptions."),
| > 
| > hum, it should be 'v' , right?

Good catch. Fixed.
| 
| Yes that's right.
| 
| Also BTW need to add the new option to the usage line a few lines below.

How about we do this for consistency with 'perf stat'(and shows the
long options exactly once with 'perf list -h')?

diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index d0f7a18..f800927 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c

@@ -27,12 +27,12 @@ int cmd_list(int argc, const char **argv, const char *prefi
                OPT_BOOLEAN(0, "raw-dump", &raw_dump, "Dump raw events"),
                OPT_BOOLEAN('d', "desc", &desc_flag,
                            "Print extra event descriptions. --no-desc to not p
-               OPT_BOOLEAN('d', "long-desc", &long_desc_flag,
+               OPT_BOOLEAN('v', "long-desc", &long_desc_flag,
                            "Print longer event descriptions."),
                OPT_END()
        };
        const char * const list_usage[] = {
-               "perf list [--no-desc] [hw|sw|cache|tracepoint|pmu|event_glob]"
+               "perf list [<options>] [hw|sw|cache|tracepoint|pmu|event_glob]"
                NULL
        };

| 
| -Andi
| 
| -- 
| ak@linux.intel.com -- Speaking for myself only