Everytime perf_config() is called, perf_config() always read config files. (i.e. user config '~/.perfconfig' and system config '$(sysconfdir)/perfconfig')
But we need to use the config set that already contains all config key-value pairs to avoid this repetitive work reading the config files in perf_config(). (the config set mean a global variable 'config_set') In other words, if new perf_config() is called, only first time 'config_set' is initialized collecting all configs from the config files and it work with perf_config_set__iter(). And free the config set after sub-command work at run_builtin(). If we do, 'config_set' can be reused wherever using perf_config() and a feature of old perf_config() is the same as new perf_config() work without the repetitive work that read the config files. Cc: Namhyung Kim <namhy...@kernel.org> Cc: Jiri Olsa <jo...@redhat.com> Cc: Wang Nan <wangn...@huawei.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Ingo Molnar <mi...@redhat.com> Cc: Masami Hiramatsu <mhira...@kernel.org> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Signed-off-by: Taeung Song <treeze.tae...@gmail.com> --- tools/perf/perf.c | 1 + tools/perf/util/cache.h | 1 + tools/perf/util/config.c | 86 +++++++++++++++++++++++------------------------- 3 files changed, 43 insertions(+), 45 deletions(-) diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 15982ce..058d5dc 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -391,6 +391,7 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) perf_env__set_cmdline(&perf_env, argc, argv); status = p->fn(argc, argv, prefix); + perf_config_set__delete(&config_set); exit_browser(status); perf_env__exit(&perf_env); bpf__clear(); diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index 0d814bb..54bbd55 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -7,6 +7,7 @@ #include <subcmd/pager.h> #include "../perf.h" #include "../ui/ui.h" +#include "config.h" #include <linux/string.h> diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 2cae413..8c517cb 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -479,51 +479,6 @@ static int perf_config_global(void) return !perf_env_bool("PERF_CONFIG_NOGLOBAL", 0); } -int perf_config(config_fn_t fn, void *data) -{ - int ret = -1; - const char *home = NULL; - - /* Setting $PERF_CONFIG makes perf read _only_ the given config file. */ - if (config_exclusive_filename) - return perf_config_from_file(fn, config_exclusive_filename, data); - if (perf_config_system() && !access(perf_etc_perfconfig(), R_OK)) { - if (perf_config_from_file(fn, perf_etc_perfconfig(), data) < 0) - goto out; - } - - home = getenv("HOME"); - if (perf_config_global() && home) { - char *user_config = strdup(mkpath("%s/.perfconfig", home)); - struct stat st; - - if (user_config == NULL) { - warning("Not enough memory to process %s/.perfconfig, " - "ignoring it.", home); - goto out; - } - - if (stat(user_config, &st) < 0) - goto out_free; - - if (st.st_uid && (st.st_uid != geteuid())) { - warning("File %s not owned by current user or root, " - "ignoring it.", user_config); - goto out_free; - } - - if (!st.st_size) - goto out_free; - - ret = perf_config_from_file(fn, user_config, data); - -out_free: - free(user_config); - } -out: - return ret; -} - static struct perf_config_section *find_section(struct list_head *sections, const char *section_name) { @@ -707,6 +662,47 @@ struct perf_config_set *perf_config_set__new(void) return set; } +static int perf_config_set__iter(struct perf_config_set *set, config_fn_t fn, void *data) +{ + struct perf_config_section *section; + struct perf_config_item *item; + struct list_head *sections; + char key[BUFSIZ]; + + if (set == NULL) + return -1; + + sections = &set->sections; + if (list_empty(sections)) + return -1; + + list_for_each_entry(section, sections, node) { + list_for_each_entry(item, §ion->items, node) { + char *value = item->value; + + if (value) { + scnprintf(key, sizeof(key), "%s.%s", + section->name, item->name); + if (fn(key, value, data) < 0) { + pr_err("Error: wrong config key-value pair %s=%s\n", + key, value); + return -1; + } + } + } + } + + return 0; +} + +int perf_config(config_fn_t fn, void *data) +{ + if (config_set == NULL) + config_set = perf_config_set__new(); + + return perf_config_set__iter(config_set, fn, data); +} + static void perf_config_item__delete(struct perf_config_item *item) { zfree(&item->name); -- 2.5.0