Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753596AbcD0SjH (ORCPT ); Wed, 27 Apr 2016 14:39:07 -0400 Received: from mail.kernel.org ([198.145.29.136]:42757 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753561AbcD0SjE (ORCPT ); Wed, 27 Apr 2016 14:39:04 -0400 From: Masami Hiramatsu To: Arnaldo Carvalho de Melo Cc: Masami Hiramatsu , linux-kernel@vger.kernel.org, Namhyung Kim , Peter Zijlstra , Ingo Molnar , Hemant Kumar , Ananth N Mavinakayanahalli Subject: [PATCH perf/core v5 12/15] perf-list: Show SDT and pre-cached events Date: Thu, 28 Apr 2016 03:38:58 +0900 Message-Id: <20160427183858.23446.62061.stgit@devbox> X-Mailer: git-send-email 2.1.0 In-Reply-To: <20160427183701.23446.15293.stgit@devbox> References: <20160427183701.23446.15293.stgit@devbox> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6975 Lines: 217 From: Masami Hiramatsu Show SDT and pre-cached events by perf-list with "sdt". This also shows the binary and build-id where the events are placed only when there are same name events on different binaries. e.g. ---- # perf list sdt List of pre-defined events (to be used in -e): sdt_libc:lll_futex_wake [SDT event] sdt_libc:lll_lock_wait_private [SDT event] sdt_libc:longjmp [SDT event] sdt_libc:longjmp_target [SDT event] ... sdt_libstdcxx:rethrow@/usr/bin/gcc(0cc207fc4b27) [SDT event] sdt_libstdcxx:rethrow@/usr/lib64/libstdc++.so.6.0.20(91c7a88fdf49) sdt_libstdcxx:throw@/usr/bin/gcc(0cc207fc4b27) [SDT event] sdt_libstdcxx:throw@/usr/lib64/libstdc++.so.6.0.20(91c7a88fdf49) ---- The binary path and build-id are shown in below format; :@() Signed-off-by: Masami Hiramatsu Signed-off-by: Masami Hiramatsu --- Changes in v5: - Fix a build error for minimal option. Changes in v4: - Update patch description. - Change event list format. --- tools/perf/builtin-list.c | 4 ++ tools/perf/util/parse-events.c | 83 ++++++++++++++++++++++++++++++++++++++++ tools/perf/util/parse-events.h | 2 + tools/perf/util/probe-file.h | 9 ++++ 4 files changed, 98 insertions(+) diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c index 5e22db4..3cba865 100644 --- a/tools/perf/builtin-list.c +++ b/tools/perf/builtin-list.c @@ -62,6 +62,8 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) print_hwcache_events(NULL, raw_dump); else if (strcmp(argv[i], "pmu") == 0) print_pmu_events(NULL, raw_dump); + else if (strcmp(argv[i], "sdt") == 0) + print_sdt_events(NULL, NULL, raw_dump); else if ((sep = strchr(argv[i], ':')) != NULL) { int sep_idx; @@ -76,6 +78,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) s[sep_idx] = '\0'; print_tracepoint_events(s, s + sep_idx + 1, raw_dump); + print_sdt_events(s, s + sep_idx + 1, raw_dump); free(s); } else { if (asprintf(&s, "*%s*", argv[i]) < 0) { @@ -89,6 +92,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) print_hwcache_events(s, raw_dump); print_pmu_events(s, raw_dump); print_tracepoint_events(NULL, s, raw_dump); + print_sdt_events(NULL, s, raw_dump); free(s); } } diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index bcbc983..f9c8b7b 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -20,6 +20,7 @@ #include "pmu.h" #include "thread_map.h" #include "cpumap.h" +#include "probe-file.h" #include "asm/bug.h" #define MAX_NAME_LEN 100 @@ -1976,6 +1977,86 @@ static bool is_event_supported(u8 type, unsigned config) return ret; } +void print_sdt_events(const char *subsys_glob, const char *event_glob, + bool name_only) +{ + struct probe_cache *pcache; + struct probe_cache_entry *ent; + struct strlist *bidlist, *sdtlist; + struct strlist_config cfg = {.dont_dupstr = true}; + struct str_node *nd, *nd2; + char *buf, *path, *ptr = NULL; + bool show_detail = false; + int ret; + + sdtlist = strlist__new(NULL, &cfg); + if (!sdtlist) { + pr_debug("Failed to allocate new strlist for SDT\n"); + return; + } + ret = build_id_cache__list_all(&bidlist); + if (ret < 0) { + pr_debug("Failed to get buildids: %d\n", ret); + return; + } + strlist__for_each(nd, bidlist) { + pcache = probe_cache__new(nd->s); + if (!pcache) + continue; + if (!list_empty(&pcache->list)) + list_for_each_entry(ent, &pcache->list, list) { + if (!ent->sdt) + continue; + if (subsys_glob && + !strglobmatch(ent->pev.group, subsys_glob)) + continue; + if (event_glob && + !strglobmatch(ent->pev.event, event_glob)) + continue; + ret = asprintf(&buf, "%s:%s@%s", ent->pev.group, + ent->pev.event, nd->s); + if (ret > 0) + strlist__add(sdtlist, buf); + } + probe_cache__delete(pcache); + } + strlist__delete(bidlist); + + strlist__for_each(nd, sdtlist) { + buf = strchr(nd->s, '@'); + if (buf) + *(buf++) = '\0'; + if (name_only) { + printf("%s ", nd->s); + continue; + } + nd2 = strlist__next(nd); + if (nd2) { + ptr = strchr(nd2->s, '@'); + if (ptr) + *ptr = '\0'; + if (strcmp(nd->s, nd2->s) == 0) + show_detail = true; + } + if (show_detail) { + path = build_id_cache__origname(buf); + ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf); + if (ret > 0) { + printf(" %-50s [%s]\n", buf, "SDT event"); + free(buf); + } + } else + printf(" %-50s [%s]\n", nd->s, "SDT event"); + if (nd2) { + if (strcmp(nd->s, nd2->s) != 0) + show_detail = false; + if (ptr) + *ptr = '@'; + } + } + strlist__delete(sdtlist); +} + int print_hwcache_events(const char *event_glob, bool name_only) { unsigned int type, op, i, evt_i = 0, evt_num = 0; @@ -2158,6 +2239,8 @@ void print_events(const char *event_glob, bool name_only) } print_tracepoint_events(NULL, NULL, name_only); + + print_sdt_events(NULL, NULL, name_only); } int parse_events__is_hardcoded_term(struct parse_events_term *term) diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index d740c3c..c08daa9 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -182,6 +182,8 @@ void print_symbol_events(const char *event_glob, unsigned type, void print_tracepoint_events(const char *subsys_glob, const char *event_glob, bool name_only); int print_hwcache_events(const char *event_glob, bool name_only); +void print_sdt_events(const char *subsys_glob, const char *event_glob, + bool name_only); int is_valid_tracepoint(const char *event_string); int valid_event_mount(const char *eventfs); diff --git a/tools/perf/util/probe-file.h b/tools/perf/util/probe-file.h index 93aa193..ce98162 100644 --- a/tools/perf/util/probe-file.h +++ b/tools/perf/util/probe-file.h @@ -22,6 +22,8 @@ struct probe_cache { #define PF_FL_UPROBE 1 #define PF_FL_RW 2 +/* probe-file.c depends on libelf */ +#ifdef HAVE_LIBELF_SUPPORT int probe_file__open(int flag); int probe_file__open_both(int *kfd, int *ufd, int flag); struct strlist *probe_file__get_namelist(int fd); @@ -46,4 +48,11 @@ struct probe_cache_entry *probe_cache__find(struct probe_cache *pcache, struct probe_cache_entry *probe_cache__find_by_name(struct probe_cache *pcache, const char *group, const char *event); int probe_cache__show_all_caches(struct strfilter *filter); +#else /* ! HAVE_LIBELF_SUPPORT */ +static inline struct probe_cache *probe_cache__new(const char *tgt __maybe_unused) +{ + return NULL; +} +#define probe_cache__delete(pcache) do {} while(0) +#endif #endif