From 3c42258c9a4db70133fa6946a275b62a16792bb5 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 20 Jan 2011 23:15:45 +0900 Subject: perf probe: Add filters support for available functions Add filters support for available function list. Default filter is "!_*" for filtering out local-purpose symbols. e.g.: # perf probe --filter="add*" -F add_disk add_disk_randomness add_input_randomness add_interrupt_randomness add_memory add_page_to_unevictable_list add_page_wait_queue ... Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Chase Douglas Cc: Franck Bui-Huu Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Srikar Dronamraju Cc: Steven Rostedt LKML-Reference: <20110120141545.25915.85930.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 23 +++++++++++++---------- tools/perf/util/probe-event.h | 2 +- 2 files changed, 14 insertions(+), 11 deletions(-) (limited to 'tools/perf/util') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 077e0518f0f7..9d237e3cff5d 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -1951,21 +1951,23 @@ int del_perf_probe_events(struct strlist *dellist) return ret; } +/* TODO: don't use a global variable for filter ... */ +static struct strfilter *available_func_filter; /* - * If a symbol corresponds to a function with global binding return 0. - * For all others return 1. + * If a symbol corresponds to a function with global binding and + * matches filter return 0. For all others return 1. */ -static int filter_non_global_functions(struct map *map __unused, - struct symbol *sym) +static int filter_available_functions(struct map *map __unused, + struct symbol *sym) { - if (sym->binding != STB_GLOBAL) - return 1; - - return 0; + if (sym->binding == STB_GLOBAL && + strfilter__compare(available_func_filter, sym->name)) + return 0; + return 1; } -int show_available_funcs(const char *module) +int show_available_funcs(const char *module, struct strfilter *_filter) { struct map *map; int ret; @@ -1981,7 +1983,8 @@ int show_available_funcs(const char *module) pr_err("Failed to find %s map.\n", (module) ? : "kernel"); return -EINVAL; } - if (map__load(map, filter_non_global_functions)) { + available_func_filter = _filter; + if (map__load(map, filter_available_functions)) { pr_err("Failed to load map.\n"); return -EINVAL; } diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index 4e80b2bbc516..3434fc9d79d5 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -128,7 +128,7 @@ extern int show_line_range(struct line_range *lr, const char *module); extern int show_available_vars(struct perf_probe_event *pevs, int npevs, int max_probe_points, const char *module, struct strfilter *filter, bool externs); -extern int show_available_funcs(const char *module); +extern int show_available_funcs(const char *module, struct strfilter *filter); /* Maximum index number of event-name postfix */ -- cgit v1.2.1