From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F9F6ECE58D for ; Fri, 11 Oct 2019 20:09:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0FDAC214E0 for ; Fri, 11 Oct 2019 20:09:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570824546; bh=5zResmdL0sezn9UbkJuAcJ2wO/cPq83Bs9/pP+Q23rY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tVCJ+EkHHcEDgXePNP6YYviP6W/pKHNV09a4VJmdQuhpsL+SRtnQ2Zmn7GhNp712e yhVpQBB0GJcYcCnAk4SfRpNTn1ycCql5xBawaYgjibcV95fCDHdg5wo0dkPBwHqMIt TMKLr/MJAIYJ77wfU96+c4oDr7y5lq4yJQR6HJF0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729490AbfJKUJE (ORCPT ); Fri, 11 Oct 2019 16:09:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:44770 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728855AbfJKUJD (ORCPT ); Fri, 11 Oct 2019 16:09:03 -0400 Received: from quaco.ghostprotocols.net (189-94-137-67.3g.claro.net.br [189.94.137.67]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 67AE821835; Fri, 11 Oct 2019 20:09:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570824543; bh=5zResmdL0sezn9UbkJuAcJ2wO/cPq83Bs9/pP+Q23rY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PHGqjsRdKBEYx+UlhOAtGHqJS6af6NjSgKLSwudZaqi6+v229TOYPXAYdYDFQcOJp XWozXYbmoHwcmYdZNFPrVRjPN9at7Oi7YD0dc9E6Pq63xJQHX1MZMqWnLh82E+xTKS NuQqOSORF1aTE/EyUeBzZZdcLITgq808EUeePAxU= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter Subject: [PATCH 29/69] perf trace: Allow associating scnprintf routines with well known arg names Date: Fri, 11 Oct 2019 17:05:19 -0300 Message-Id: <20191011200559.7156-30-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191011200559.7156-1-acme@kernel.org> References: <20191011200559.7156-1-acme@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo For instance 'msr' appears in several tracepoints, so we can associate it with a single scnprintf() routine auto-generated from kernel headers, as will be done in followup patches. Start with an empty array of associations. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-89ptht6s5fez82lykuwq1eyb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 8303d83cb93c..d52972ca6123 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1479,6 +1479,27 @@ static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args) return 0; } +static struct syscall_arg_fmt syscall_arg_fmts__by_name[] = { +}; + +static int syscall_arg_fmt__cmp(const void *name, const void *fmtp) +{ + const struct syscall_arg_fmt *fmt = fmtp; + return strcmp(name, fmt->name); +} + +static struct syscall_arg_fmt * +__syscall_arg_fmt__find_by_name(struct syscall_arg_fmt *fmts, const int nmemb, const char *name) +{ + return bsearch(name, fmts, nmemb, sizeof(struct syscall_arg_fmt), syscall_arg_fmt__cmp); +} + +static struct syscall_arg_fmt *syscall_arg_fmt__find_by_name(const char *name) +{ + const int nmemb = ARRAY_SIZE(syscall_arg_fmts__by_name); + return __syscall_arg_fmt__find_by_name(syscall_arg_fmts__by_name, nmemb, name); +} + static struct tep_format_field * syscall_arg_fmt__init_array(struct syscall_arg_fmt *arg, struct tep_format_field *field) { @@ -1518,6 +1539,11 @@ syscall_arg_fmt__init_array(struct syscall_arg_fmt *arg, struct tep_format_field * 7 unsigned long */ arg->scnprintf = SCA_FD; + } else { + struct syscall_arg_fmt *fmt = syscall_arg_fmt__find_by_name(field->name); + + if (fmt) + arg->scnprintf = fmt->scnprintf; } } -- 2.21.0