From: Yunlong Song <yunlong.song@huawei.com>
Date: Wed, 18 Mar 2015 13:35:51 +0000 (+0800)
Subject: perf tools: Fix the bash completion for listing subcommands of perf
X-Git-Tag: firefly_0821_release~176^2~1816^2~70^2~9
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e003ce54d2ccbb8da0fd4f421e1cc9686ef25add;p=firefly-linux-kernel-4.4.55.git

perf tools: Fix the bash completion for listing subcommands of perf

The bash completion does not support listing subcommands for 'perf
--<long option> <TAB>'.

Example:

Before this patch:

 $ perf --debug <TAB>
 $

As shown above, the subcommands of perf does not come out.

After this patch:

 $ perf --debug <TAB>
 annotate       buildid-cache  data           evlist         inject
 kvm            lock           probe          report         script
 test           top            version
 bench          buildid-list   diff           help           kmem
 list           mem            record         sched          stat
 timechart      trace

As shown above, the subcommands of perf can come out now.

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1426685758-25488-7-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/perf-completion.sh b/tools/perf/perf-completion.sh
index 3e25d3ea17f9..7b98ae48f0bf 100644
--- a/tools/perf/perf-completion.sh
+++ b/tools/perf/perf-completion.sh
@@ -130,7 +130,7 @@ __perf_main ()
 	# Skip options backward and find the last perf command
 	__perf_prev_skip_opts
 	# List perf subcommands or long options
-	if [ $cword -eq 1 ]; then
+	if [ -z $prev_skip_opts ]; then
 		if [[ $cur == --* ]]; then
 			cmds=$($cmd --list-opts)
 		else