perf tools: Support for events bash completion

Add basic bash completion for the -e option in record, top and stat
subcommands. Only hardware, software and tracepoint events are
supported.

Breakpoints, raw events and events grouping completion need more
thinking.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1344522713-27951-3-git-send-email-fweisbec@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/tools/perf/bash_completion b/tools/perf/bash_completion
index 9a31fa5ed2a9..1958fa539d0f 100644
--- a/tools/perf/bash_completion
+++ b/tools/perf/bash_completion
@@ -6,7 +6,7 @@ _perf()
         local cur cmd
 
         COMPREPLY=()
-        _get_comp_words_by_ref cur
+        _get_comp_words_by_ref cur prev
 
         cmd=${COMP_WORDS[0]}
 
@@ -14,6 +14,10 @@ _perf()
         if [ $COMP_CWORD -eq 1 ]; then
                 cmds=$($cmd --list-cmds)
                 COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
+        # List possible events for -e option
+        elif [[ $prev == "-e" && "${COMP_WORDS[1]}" == @(record|stat|top) ]]; then
+                cmds=$($cmd list --raw-dump)
+                COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
         # Fall down to list regular files
         else
                 _filedir