From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755236AbbEECer (ORCPT ); Mon, 4 May 2015 22:34:47 -0400 Received: from mail9.hitachi.co.jp ([133.145.228.44]:42761 "EHLO mail9.hitachi.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751319AbbEECby (ORCPT ); Mon, 4 May 2015 22:31:54 -0400 X-AuditID: 85900ec0-a0ac7b9000003d4c-c7-55482b8cc4ca Subject: [PATCH perf/core v4 1/4] perf probe: Allow to use filter on --del command From: Masami Hiramatsu To: Arnaldo Carvalho de Melo Cc: Peter Zijlstra , Linux Kernel Mailing List , David Ahern , namhyung@kernel.org, Jiri Olsa , Ingo Molnar Date: Tue, 05 May 2015 11:29:48 +0900 Message-ID: <20150505022948.23399.4197.stgit@localhost.localdomain> In-Reply-To: <20150505022945.23399.993.stgit@localhost.localdomain> References: <20150505022945.23399.993.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This makes perf-probe --del option to accept filter rules not only simple glob pattern. This simplifies the code and improve the flexibility. E.g. if we remove 2 different pattern events, we need 2 -d options. ---- # ./perf probe -d vfs\* -d malloc Removed event: probe_libc:malloc Removed event: probe:vfs_read ---- This allows you to joint the 2 patterns with '|'. ---- # ./perf probe -d 'vfs*|malloc' Removed event: probe:vfs_read Removed event: probe_libc:malloc ---- Signed-off-by: Masami Hiramatsu --- tools/perf/builtin-probe.c | 16 ++---- tools/perf/util/probe-event.c | 102 +++++++++++++---------------------------- tools/perf/util/probe-event.h | 2 - 3 files changed, 39 insertions(+), 81 deletions(-) diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index feca316..1f41b4e 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -55,12 +55,12 @@ static struct { bool show_ext_vars; bool show_funcs; bool mod_events; + bool del_events; bool uprobes; bool quiet; bool target_used; int nevents; struct perf_probe_event events[MAX_PROBES]; - struct strlist *dellist; struct line_range line_range; char *target; int max_probe_points; @@ -195,10 +195,8 @@ static int opt_del_probe_event(const struct option *opt __maybe_unused, const char *str, int unset __maybe_unused) { if (str) { - params.mod_events = true; - if (!params.dellist) - params.dellist = strlist__new(true, NULL); - strlist__add(params.dellist, str); + params.del_events = true; + return params_add_filter(str); } return 0; } @@ -313,8 +311,6 @@ static void cleanup_params(void) for (i = 0; i < params.nevents; i++) clear_perf_probe_event(params.events + i); - if (params.dellist) - strlist__delete(params.dellist); line_range__clear(¶ms.line_range); free(params.target); if (params.filter) @@ -454,7 +450,7 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) if (params.max_probe_points == 0) params.max_probe_points = MAX_PROBES; - if ((!params.nevents && !params.dellist && !params.list_events && + if ((!params.nevents && !params.del_events && !params.list_events && !params.show_lines && !params.show_funcs)) usage_with_options(probe_usage, options); @@ -514,8 +510,8 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) } #endif - if (params.dellist) { - ret = del_perf_probe_events(params.dellist); + if (params.del_events) { + ret = del_perf_probe_events(params.filter); if (ret < 0) { pr_err_with_code(" Error: Failed to delete events.", ret); return ret; diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 5995d81..abf5845 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2734,40 +2734,39 @@ error: return ret; } -static int del_trace_probe_event(int fd, const char *buf, - struct strlist *namelist) +static int del_trace_probe_events(int fd, struct strfilter *filter, + struct strlist *namelist) { - struct str_node *ent, *n; + struct str_node *ent; + const char *p; int ret = -ENOENT; - if (strpbrk(buf, "*?")) { /* Glob-exp */ - strlist__for_each_safe(ent, n, namelist) - if (strglobmatch(ent->s, buf)) { - ret = __del_trace_probe_event(fd, ent); - if (ret < 0) - break; - strlist__remove(namelist, ent); - } - } else { - ent = strlist__find(namelist, buf); - if (ent) { + if (!namelist) + return -ENOENT; + + strlist__for_each(ent, namelist) { + p = strchr(ent->s, ':'); + if ((p && strfilter__compare(filter, p + 1)) || + strfilter__compare(filter, ent->s)) { ret = __del_trace_probe_event(fd, ent); - if (ret >= 0) - strlist__remove(namelist, ent); + if (ret < 0) + break; } } return ret; } -int del_perf_probe_events(struct strlist *dellist) +int del_perf_probe_events(struct strfilter *filter) { - int ret = -1, ret2, ufd = -1, kfd = -1; - char buf[128]; - const char *group, *event; - char *p, *str; - struct str_node *ent; + int ret, ret2, ufd = -1, kfd = -1; struct strlist *namelist = NULL, *unamelist = NULL; + char *str = strfilter__string(filter); + + if (!str) + return -EINVAL; + + pr_debug("Delete filter: \'%s\'\n", str); /* Get current event names */ kfd = open_kprobe_events(true); @@ -2780,59 +2779,21 @@ int del_perf_probe_events(struct strlist *dellist) if (kfd < 0 && ufd < 0) { print_both_open_warning(kfd, ufd); + ret = kfd; goto error; } - if (namelist == NULL && unamelist == NULL) { - ret = -ENOENT; + ret = del_trace_probe_events(kfd, filter, namelist); + if (ret < 0 && ret != -ENOENT) goto error; - } - - strlist__for_each(ent, dellist) { - str = strdup(ent->s); - if (str == NULL) { - ret = -ENOMEM; - goto error; - } - pr_debug("Parsing: %s\n", str); - p = strchr(str, ':'); - if (p) { - group = str; - *p = '\0'; - event = p + 1; - } else { - group = "*"; - event = str; - } - if (event && *event == '.') - event++; - - ret = e_snprintf(buf, 128, "%s:%s", group, event); - if (ret < 0) { - pr_err("Failed to copy event."); - free(str); - goto error; - } - - pr_debug("Group: %s, Event: %s\n", group, event); - free(str); - - ret = ret2 = -ENOENT; - if (namelist) - ret = del_trace_probe_event(kfd, buf, namelist); - - if ((ret >= 0 || ret == -ENOENT) && unamelist) - ret2 = del_trace_probe_event(ufd, buf, unamelist); - - /* Since we can remove probes which already removed, don't check it */ - if (ret == -ENOENT && ret2 == -ENOENT) - pr_debug("Event \"%s\" does not exist.\n", buf); - else if (ret < 0 || ret2 < 0) { - if (ret >= 0) - ret = ret2; - break; - } + ret2 = del_trace_probe_events(ufd, filter, unamelist); + if (ret2 < 0 && ret2 != -ENOENT) + ret = ret2; + else if (ret == -ENOENT && ret2 == -ENOENT) { + pr_debug("\"%s\" does not hit any event.\n", str); + /* Note that this is silently ignored */ + ret = 0; } error: @@ -2845,6 +2806,7 @@ error: strlist__delete(unamelist); close(ufd); } + free(str); return ret; } diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index ec13362..e10aedc 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -126,7 +126,7 @@ extern const char *kernel_get_module_path(const char *module); extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs, int max_probe_points, bool force_add); -extern int del_perf_probe_events(struct strlist *dellist); +extern int del_perf_probe_events(struct strfilter *filter); extern int show_perf_probe_events(struct strfilter *filter); extern int show_line_range(struct line_range *lr, const char *module, bool user);