1 files changed, 43 insertions, 7 deletions

diff --git a/tools/perf/bash_completion b/tools/perf/bash_completion
index 1958fa539d0f..56e6a12aab59 100644
--- a/tools/perf/bash_completion
+++ b/tools/perf/bash_completion
@@ -1,23 +1,59 @@
 # perf completion
 
+function_exists()
+{
+        declare -F $1 > /dev/null
+        return $?
+}
+
+function_exists __ltrim_colon_completions ||
+__ltrim_colon_completions()
+{
+        if [[ "$1" == *:* && "$COMP_WORDBREAKS" == *:* ]]; then
+                # Remove colon-word prefix from COMPREPLY items
+                local colon_word=${1%${1##*:}}
+                local i=${#COMPREPLY[*]}
+                while [[ $((--i)) -ge 0 ]]; do
+                        COMPREPLY[$i]=${COMPREPLY[$i]#"$colon_word"}
+                done
+        fi
+}
+
 have perf &&
 _perf()
 {
-        local cur cmd
+        local cur prev cmd
 
         COMPREPLY=()
-        _get_comp_words_by_ref cur prev
+        if function_exists _get_comp_words_by_ref; then
+                _get_comp_words_by_ref -n : cur prev
+        else
+                cur=$(_get_cword :)
+                prev=${COMP_WORDS[COMP_CWORD-1]}
+        fi
 
         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)
-                COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
+                evts=$($cmd list --raw-dump)
+                COMPREPLY=( $( compgen -W '$evts' -- "$cur" ) )
+                __ltrim_colon_completions $cur
+        # List long option names
+        elif [[ $cur == --* ]];  then
+                subcmd=${COMP_WORDS[1]}
+                opts=$($cmd $subcmd --list-opts)
+                COMPREPLY=( $( compgen -W '$opts' -- "$cur" ) )
         # Fall down to list regular files
         else
                 _filedir