Messages in this thread Patch in this message | | | From | Taeung Song <> | Subject | [PATCH v2 1/7] perf config: Add support for getting functionality | Date | Mon, 14 Nov 2016 17:21:36 +0900 |
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Add a functionality getting particular config key-value pairs. For the syntax examples,
perf config [<file-option>] [section.name ...]
e.g. To query config items 'report.queue-size' and 'report.children', do
# perf config report.queue-size report.children
Cc: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Signed-off-by: Taeung Song <treeze.taeung@gmail.com> --- tools/perf/builtin-config.c | 42 +++++++++++++++++++++++++++++++++++++++--- 1 file changed, 39 insertions(+), 3 deletions(-)
diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c index e4207a2..7b24789 100644 --- a/tools/perf/builtin-config.c +++ b/tools/perf/builtin-config.c @@ -17,7 +17,7 @@ static bool use_system_config, use_user_config; static const char * const config_usage[] = { - "perf config [<file-option>] [options]", + "perf config [<file-option>] [options] [section.name ...]", NULL }; @@ -33,6 +33,36 @@ static struct option config_options[] = { OPT_END() }; +static int show_spec_config(struct perf_config_set *set, const char *var) +{ + struct perf_config_section *section; + struct perf_config_item *item; + + if (set == NULL || var == NULL) + return -1; + + perf_config_items__for_each_entry(&set->sections, section) { + if (prefixcmp(var, section->name) != 0) + continue; + + perf_config_items__for_each_entry(§ion->items, item) { + const char *name = var + strlen(section->name) + 1; + + if (strcmp(name, item->name) == 0) { + char *value = item->value; + + if (value) { + printf("%s=%s\n", var, value); + return 0; + } + } + + } + } + + return 0; +} + static int show_config(struct perf_config_set *set) { struct perf_config_section *section; @@ -54,7 +84,7 @@ static int show_config(struct perf_config_set *set) int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused) { - int ret = 0; + int i, ret = 0; struct perf_config_set *set; char *user_config = mkpath("%s/.perfconfig", getenv("HOME")); @@ -100,7 +130,13 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused) } break; default: - usage_with_options(config_usage, config_options); + if (argc == 0) { + usage_with_options(config_usage, config_options); + break; + } + + for (i = 0; argv[i]; i++) + ret = show_spec_config(set, argv[i]); } perf_config_set__delete(set); -- 2.7.4
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