perf tools: Complete long option names of perf command

The main perf binary can receive a number of options that configure
working environment.  Add them to the completion script.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1349191294-6926-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/tools/perf/bash_completion b/tools/perf/bash_completion
index 3d48cee1b5e5..bef06f0deeb5 100644
--- a/tools/perf/bash_completion
+++ b/tools/perf/bash_completion
@@ -21,10 +21,16 @@ _perf()
 
         cmd=${COMP_WORDS[0]}
 
-        # List perf subcommands
+        # List perf subcommands or long options
         if [ $COMP_CWORD -eq 1 ]; then
-                cmds=$($cmd --list-cmds)
-                COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
+                if [[ $cur == --* ]]; then
+                        COMPREPLY=( $( compgen -W '--help --version \
+                        --exec-path --html-path --paginate --no-pager \
+                        --perf-dir --work-tree --debugfs-dir' -- "$cur" ) )
+                else
+                        cmds=$($cmd --list-cmds)
+                        COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
+                fi
         # List possible events for -e option
         elif [[ $prev == "-e" && "${COMP_WORDS[1]}" == @(record|stat|top) ]]; then
                 cmds=$($cmd list --raw-dump)