perf tools: Add the bash completion for listing subsubcommands of perf trace
The bash completion does not support listing subsubcommands for 'perf
trace <TAB>', so fix it.
Example:
Before this patch:
$ perf trace <TAB>
$
As shown above, the subsubcommands of perf trace does not come out.
After this patch:
$ perf trace <TAB>
record
As shown above, the subsubcommands of perf trace 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/1426685758-25488-13-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 6969ba9..0b3b4e4 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2609,7 +2609,7 @@
int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
{
- const char * const trace_usage[] = {
+ const char *trace_usage[] = {
"perf trace [<options>] [<command>]",
"perf trace [<options>] -- <command> [<options>]",
"perf trace record [<options>] [<command>]",
@@ -2684,6 +2684,7 @@
OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
OPT_END()
};
+ const char * const trace_subcommands[] = { "record", NULL };
int err;
char bf[BUFSIZ];
@@ -2699,8 +2700,8 @@
goto out;
}
- argc = parse_options(argc, argv, trace_options, trace_usage,
- PARSE_OPT_STOP_AT_NON_OPTION);
+ argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
+ trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
if (trace.trace_pgfaults) {
trace.opts.sample_address = true;