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Date: Wed, 2 Dec 2015 19:54:40 +0900 From: Taeung Song <treeze.taeung@...il.com> To: Arnaldo Carvalho de Melo <acme@...nel.org> Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>, Taeung Song <treeze.taeung@...il.com>, Namhyung Kim <namhyung@...nel.org>, Jiri Olsa <jolsa@...hat.com> Subject: [PATCH v12 22/22] perf config: Add a option 'remove' to perf-config A option 'remove' is to remove specific config variables. For the syntax examples, # perf config [<file-option>] -r | --remove [section.name ...] Cc: Namhyung Kim <namhyung@...nel.org> Cc: Jiri Olsa <jolsa@...hat.com> Signed-off-by: Taeung Song <treeze.taeung@...il.com> --- tools/perf/Documentation/perf-config.txt | 6 ++++++ tools/perf/builtin-config.c | 37 ++++++++++++++++++++++++++++++-- 2 files changed, 41 insertions(+), 2 deletions(-) diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index db50d3d..e9cfaa2a 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -13,6 +13,8 @@ or 'perf config' [<file-option>] -l | --list or 'perf config' [<file-option>] -a | --list-all +or +'perf config' [<file-option>] -r | --remove [section.name ...] DESCRIPTION ----------- @@ -37,6 +39,10 @@ OPTIONS --list-all:: Show current and all possible config variables with default values. +-r:: +--remove:: + Remove specific config variables. + CONFIGURATION FILE ------------------ diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c index 5a886e7..cb5e974 100644 --- a/tools/perf/builtin-config.c +++ b/tools/perf/builtin-config.c @@ -23,7 +23,8 @@ static const char * const config_usage[] = { enum actions { ACTION_LIST = 1, ACTION_LIST_ALL, - ACTION_SKEL + ACTION_SKEL, + ACTION_REMOVE } actions; static struct option config_options[] = { @@ -35,6 +36,8 @@ static struct option config_options[] = { OPT_SET_UINT('k', "skel", &actions, "produce an skeleton with the possible" " config variables", ACTION_SKEL), + OPT_SET_UINT('r', "remove", &actions, + "remove specific variables: [section.name ...]", ACTION_REMOVE), OPT_INCR('v', "verbose", &verbose, "Be more verbose" " (show config description)"), OPT_BOOLEAN(0, "system", &use_system_config, "use system config file"), @@ -487,7 +490,13 @@ static int set_config(struct list_head *sections, const char *config_file_name, struct config_element *element = NULL; find_config(sections, §ion, &element, section_name, name); - if (value != NULL) { + if (!value) { + /* value == NULL means remove the variable */ + if (section && element) { + free(element->value); + element->value = NULL; + } + } else { value = normalize_value(section_name, name, value); /* if there isn't existent section, add a new section */ @@ -638,6 +647,7 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused) set_option_flag(config_options, 'l', "list", PARSE_OPT_EXCLUSIVE); set_option_flag(config_options, 'a', "list-all", PARSE_OPT_EXCLUSIVE); + set_option_flag(config_options, 'r', "remove", PARSE_OPT_EXCLUSIVE); argc = parse_options(argc, argv, config_options, config_usage, PARSE_OPT_STOP_AT_NON_OPTION); @@ -667,6 +677,29 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused) } switch (actions) { + case ACTION_REMOVE: + if (argc) { + for (i = 0; argv[i]; i++) { + if (!use_system_config && !use_user_config) { + ret = perf_configset_with_option(set_config, + &system_sections, + system_config, + argv[i], NULL); + ret = perf_configset_with_option(set_config, + &user_sections, + user_config, + argv[i], NULL); + } else + ret = perf_configset_with_option(set_config, sections, + config_exclusive_filename, + argv[i], NULL); + } + } else { + pr_err("Error: Missing arguments\n"); + parse_options_usage(config_usage, config_options, "r", 1); + return -1; + } + break; case ACTION_SKEL: if (argc) parse_options_usage(config_usage, config_options, "k", 1); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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