From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756498Ab3H2KJv (ORCPT ); Thu, 29 Aug 2013 06:09:51 -0400 Received: from terminus.zytor.com ([198.137.202.10]:35131 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756464Ab3H2KJt (ORCPT ); Thu, 29 Aug 2013 06:09:49 -0400 Date: Thu, 29 Aug 2013 03:09:08 -0700 From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: linux-kernel@vger.kernel.org, eranian@google.com, paulus@samba.org, acme@redhat.com, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org, efault@gmx.de, fweisbec@gmail.com, adrian.hunter@intel.com, dsahern@gmail.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, acme@redhat.com, paulus@samba.org, eranian@google.com, linux-kernel@vger.kernel.org, efault@gmx.de, peterz@infradead.org, fweisbec@gmail.com, dsahern@gmail.com, adrian.hunter@intel.com, tglx@linutronix.de To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf trace: Introduce syscall arg formatters Git-Commit-ID: 13d4ff3eb36474728be2acfa773b31ff39f3ea4d X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (terminus.zytor.com [127.0.0.1]); Thu, 29 Aug 2013 03:09:14 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 13d4ff3eb36474728be2acfa773b31ff39f3ea4d Gitweb: http://git.kernel.org/tip/13d4ff3eb36474728be2acfa773b31ff39f3ea4d Author: Arnaldo Carvalho de Melo AuthorDate: Fri, 23 Aug 2013 18:14:48 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Mon, 26 Aug 2013 17:25:47 -0300 perf trace: Introduce syscall arg formatters Starting with one for printing pointers in hexadecimal, using the information in the syscall tracepoint format. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-c4y4jy7qqkn8wsd8q6j1g7zh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index c3caabb..86568ed 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -12,6 +12,11 @@ #include #include +static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, unsigned long arg) +{ + return scnprintf(bf, size, "%#lx", arg); +} + static struct syscall_fmt { const char *name; const char *alias; @@ -51,6 +56,7 @@ struct syscall { const char *name; bool filtered; struct syscall_fmt *fmt; + size_t (**arg_scnprintf)(char *bf, size_t size, unsigned long arg); }; static size_t fprintf_duration(unsigned long t, FILE *fp) @@ -207,6 +213,24 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) return err; } +static int syscall__set_arg_fmts(struct syscall *sc) +{ + struct format_field *field; + int idx = 0; + + sc->arg_scnprintf = calloc(sc->tp_format->format.nr_fields - 1, sizeof(void *)); + if (sc->arg_scnprintf == NULL) + return -1; + + for (field = sc->tp_format->format.fields->next; field; field = field->next) { + if (field->flags & FIELD_IS_POINTER) + sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex; + ++idx; + } + + return 0; +} + static int trace__read_syscall_info(struct trace *trace, int id) { char tp_name[128]; @@ -259,7 +283,10 @@ static int trace__read_syscall_info(struct trace *trace, int id) sc->tp_format = event_format__new("syscalls", tp_name); } - return sc->tp_format != NULL ? 0 : -1; + if (sc->tp_format == NULL) + return -1; + + return syscall__set_arg_fmts(sc); } static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, @@ -273,8 +300,14 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, for (field = sc->tp_format->format.fields->next; field; field = field->next) { printed += scnprintf(bf + printed, size - printed, - "%s%s: %ld", printed ? ", " : "", - field->name, args[i++]); + "%s%s: ", printed ? ", " : "", field->name); + + if (sc->arg_scnprintf && sc->arg_scnprintf[i]) + printed += sc->arg_scnprintf[i](bf + printed, size - printed, args[i]); + else + printed += scnprintf(bf + printed, size - printed, + "%ld", args[i]); + ++i; } } else { while (i < 6) {