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7335399a6a
The perf-completion.sh uses a predefined string '--help --version --exec-path --html-path --paginate --no-pager --perf-dir --work-tree --debugfs-dir' for the bash completion of 'perf --*', which has two problems: Problem 1: If the options of perf are changed (see handle_options() in perf.c), the perf-completion.sh has to be changed at the same time. If not, the bash completion of 'perf --*' and the options which perf really supports will be inconsistent. Problem 2: When typing another single character after 'perf --', e.g. 'h', and hit TAB key to get the bash completion of 'perf --h', the character 'h' disappears at once. This is not what we want, we wish the bash completion can return '--help --html-path' and then we can continue to choose one. To solve this problem, we add '--list-opts' to perf, which now supports 'perf --list-opts' directly, and its result can be used in bash completion now. Example: Before this patch: $ perf --h <-- hit TAB key after character 'h' $ perf -- <-- 'h' disappears and no required result After this patch: $ perf --h <-- hit TAB key after character 'h' --help --html-path <-- the required result Signed-off-by: Yunlong Song <yunlong.song@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Ingo Molnar <mingo@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/1425032491-20224-8-git-send-email-yunlong.song@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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