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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 34325C433E0 for ; Thu, 18 Jun 2020 02:11:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E9E62098B for ; Thu, 18 Jun 2020 02:11:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592446313; bh=Lp3K/f0xm2OeNu2VLl+DQTtHiJJaecZXnEaZb3ruG8A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XnK41UXhCm4EPVog1v7WgsOVn22awVF4rjD2OnaTaqRg1BX9L7zHeVFpQ4t2O0Wf1 3djn7F7Wl6LEAUlpb4EhHMpj8/oud65CqviQ2FYlBqZbFdkQYtEYQWoV8TyFoibkmc ZlpD+Fx+Rn17jptzcdMivak4SfZg0Yt/LZMzussY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732121AbgFRCLw (ORCPT ); Wed, 17 Jun 2020 22:11:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:54092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730526AbgFRBVd (ORCPT ); Wed, 17 Jun 2020 21:21:33 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EB85320776; Thu, 18 Jun 2020 01:21:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443293; bh=Lp3K/f0xm2OeNu2VLl+DQTtHiJJaecZXnEaZb3ruG8A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Oag0WVLbnkXuQ3EYi9Y0S1W9dYOrlG2x5I1oiY+J5fnxKibl3wvk1yivY57hkJ1qj PHIKcE1TNZBcFGQ94OtUiXNeOqGZG16pGo3sOGeEDQx7quzO2t7plVLw4jbOKL/bZV RMAUm6jT/cPvEPb9ZNRKudU6WINXHHUvZzkMA7Vc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Chaitanya Kulkarni , Jens Axboe , Sasha Levin , linux-block@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 234/266] blktrace: fix endianness for blk_log_remap() Date: Wed, 17 Jun 2020 21:15:59 -0400 Message-Id: <20200618011631.604574-234-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618011631.604574-1-sashal@kernel.org> References: <20200618011631.604574-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chaitanya Kulkarni [ Upstream commit 5aec598c456fe3c1b71a1202cbb42bdc2a643277 ] The function blk_log_remap() can be simplified by removing the call to get_pdu_remap() that copies the values into extra variable to print the data, which also fixes the endiannness warning reported by sparse. Signed-off-by: Chaitanya Kulkarni Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- kernel/trace/blktrace.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 23e5f86c9921..a677aa84ccb6 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1266,17 +1266,6 @@ static __u64 get_pdu_int(const struct trace_entry *ent, bool has_cg) return be64_to_cpu(*val); } -static void get_pdu_remap(const struct trace_entry *ent, - struct blk_io_trace_remap *r, bool has_cg) -{ - const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg); - __u64 sector_from = __r->sector_from; - - r->device_from = be32_to_cpu(__r->device_from); - r->device_to = be32_to_cpu(__r->device_to); - r->sector_from = be64_to_cpu(sector_from); -} - typedef void (blk_log_action_t) (struct trace_iterator *iter, const char *act, bool has_cg); @@ -1402,13 +1391,13 @@ static void blk_log_with_error(struct trace_seq *s, static void blk_log_remap(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) { - struct blk_io_trace_remap r = { .device_from = 0, }; + const struct blk_io_trace_remap *__r = pdu_start(ent, has_cg); - get_pdu_remap(ent, &r, has_cg); trace_seq_printf(s, "%llu + %u <- (%d,%d) %llu\n", t_sector(ent), t_sec(ent), - MAJOR(r.device_from), MINOR(r.device_from), - (unsigned long long)r.sector_from); + MAJOR(be32_to_cpu(__r->device_from)), + MINOR(be32_to_cpu(__r->device_from)), + be64_to_cpu(__r->sector_from)); } static void blk_log_plug(struct trace_seq *s, const struct trace_entry *ent, bool has_cg) -- 2.25.1