[tip:perf/urgent] perf callchain: Fixup parameter handling error message

[tip-bot for Kan Liang]

Commit-ID:  f70b4e39de4ef25aade966c0dfc69cfb97091be9
Gitweb:     http://git.kernel.org/tip/f70b4e39de4ef25aade966c0dfc69cfb97091be9
Author:     Kan Liang <kan.liang@xxxxxxxxx>
AuthorDate: Tue, 2 Dec 2014 10:06:52 -0500
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 9 Dec 2014 10:06:11 -0300

perf callchain: Fixup parameter handling error message

Fix up parse_callchain_record_opt error message for 'fp', in the past using '-g
fp' was a valid alternative to '--call-graph fp', which is not the case since:

  commit 09b0fd45ff63413df94cbd832a765076b201edbb
  Author: Jiri Olsa <jolsa@xxxxxxxxxx>
  Date:   Sat Oct 26 16:25:33 2013 +0200

  perf record: Split -g and --call-graph

I.e. -g means "use the configured unwind data collection method" which has as
default 'fp', while --call-graph requires passing the method to use.

Signed-off-by: Kan Liang <kan.liang@xxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1417532814-26208-2-git-send-email-kan.liang@xxxxxxxxx
[ split this from a larger patch related to LBR based unwinding ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/callchain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index cf524a3..64b377e 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -77,7 +77,7 @@ int parse_callchain_record_opt(const char *arg)
 				ret = 0;
 			} else
 				pr_err("callchain: No more arguments "
-				       "needed for -g fp\n");
+				       "needed for --call-graph fp\n");
 			break;
 
 #ifdef HAVE_DWARF_UNWIND_SUPPORT
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/