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Date: Thu, 23 Oct 2014 14:00:34 +0900
From: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Jiri Olsa <jolsa@...hat.com>, David Ahern <dsahern@...il.com>,
LKML <linux-kernel@...r.kernel.org>,
Hemant Kumar <hemant@...ux.vnet.ibm.com>
Subject: Re: [PATCH 5/5] perf probe: Use PARSE_OPT_EXCLUSIVE flag
Hi Namhyng,
(2014/10/23 0:15), Namhyung Kim wrote:
> The perf probe has some exclusive options. Use new PARSE_OPT_EXCLUSIVE
> flag to simplify the code and show more compact usage.
>
> $ perf probe -l -a foo
> Error: switch `a' cannot be used with switch `l'
>
> usage: perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]
> or: perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]
> or: perf probe [<options>] --del '[GROUP:]EVENT' ...
> or: perf probe --list
> or: perf probe [<options>] --line 'LINEDESC'
> or: perf probe [<options>] --vars 'PROBEPOINT'
>
> -a, --add <[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT [[NAME=]ARG ...]>
> probe point definition, where
> GROUP: Group name (optional)
> EVENT: Event name
> FUNC: Function name
> OFF: Offset from function entry (in byte)
> %return: Put the probe at function return
> SRC: Source code path
> RL: Relative line number from function entry.
> AL: Absolute line number in file.
> PT: Lazy expression of line code.
> ARG: Probe argument (local variable name or
> kprobe-tracer argument format.)
>
> -l, --list list up current probe events
>
Thanks! this looks very good to me:)
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> Cc: Hemant Kumar <hemant@...ux.vnet.ibm.com>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
> tools/perf/builtin-probe.c | 54 ++++++++--------------------------------------
> 1 file changed, 9 insertions(+), 45 deletions(-)
>
> diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
> index 04412b4770a2..23d6e7f03cf1 100644
> --- a/tools/perf/builtin-probe.c
> +++ b/tools/perf/builtin-probe.c
> @@ -312,7 +312,7 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
> #endif
> NULL
> };
> - const struct option options[] = {
> + struct option options[] = {
> OPT_INCR('v', "verbose", &verbose,
> "be more verbose (show parsed arguments, etc)"),
> OPT_BOOLEAN('l', "list", ¶ms.list_events,
> @@ -382,6 +382,14 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
> };
> int ret;
>
> + set_option_flag(options, 'a', "add", PARSE_OPT_EXCLUSIVE);
> + set_option_flag(options, 'd', "del", PARSE_OPT_EXCLUSIVE);
> + set_option_flag(options, 'l', "list", PARSE_OPT_EXCLUSIVE);
> +#ifdef HAVE_DWARF_SUPPORT
> + set_option_flag(options, 'L', "line", PARSE_OPT_EXCLUSIVE);
> + set_option_flag(options, 'V', "vars", PARSE_OPT_EXCLUSIVE);
> +#endif
> +
> argc = parse_options(argc, argv, options, probe_usage,
> PARSE_OPT_STOP_AT_NON_OPTION);
> if (argc > 0) {
> @@ -409,22 +417,6 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
> symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
>
> if (params.list_events) {
> - if (params.mod_events) {
> - pr_err(" Error: Don't use --list with --add/--del.\n");
> - usage_with_options(probe_usage, options);
> - }
> - if (params.show_lines) {
> - pr_err(" Error: Don't use --list with --line.\n");
> - usage_with_options(probe_usage, options);
> - }
> - if (params.show_vars) {
> - pr_err(" Error: Don't use --list with --vars.\n");
> - usage_with_options(probe_usage, options);
> - }
> - if (params.show_funcs) {
> - pr_err(" Error: Don't use --list with --funcs.\n");
> - usage_with_options(probe_usage, options);
> - }
> if (params.uprobes) {
> pr_warning(" Error: Don't use --list with --exec.\n");
> usage_with_options(probe_usage, options);
> @@ -435,19 +427,6 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
> return ret;
> }
> if (params.show_funcs) {
> - if (params.nevents != 0 || params.dellist) {
> - pr_err(" Error: Don't use --funcs with"
> - " --add/--del.\n");
> - usage_with_options(probe_usage, options);
> - }
> - if (params.show_lines) {
> - pr_err(" Error: Don't use --funcs with --line.\n");
> - usage_with_options(probe_usage, options);
> - }
> - if (params.show_vars) {
> - pr_err(" Error: Don't use --funcs with --vars.\n");
> - usage_with_options(probe_usage, options);
> - }
> if (!params.filter)
> params.filter = strfilter__new(DEFAULT_FUNC_FILTER,
> NULL);
> @@ -462,16 +441,6 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
>
> #ifdef HAVE_DWARF_SUPPORT
> if (params.show_lines) {
> - if (params.mod_events) {
> - pr_err(" Error: Don't use --line with"
> - " --add/--del.\n");
> - usage_with_options(probe_usage, options);
> - }
> - if (params.show_vars) {
> - pr_err(" Error: Don't use --line with --vars.\n");
> - usage_with_options(probe_usage, options);
> - }
> -
> ret = show_line_range(¶ms.line_range, params.target,
> params.uprobes);
> if (ret < 0)
> @@ -479,11 +448,6 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
> return ret;
> }
> if (params.show_vars) {
> - if (params.mod_events) {
> - pr_err(" Error: Don't use --vars with"
> - " --add/--del.\n");
> - usage_with_options(probe_usage, options);
> - }
> if (!params.filter)
> params.filter = strfilter__new(DEFAULT_VAR_FILTER,
> NULL);
>
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@...achi.com
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