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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3397FC433FE for ; Sun, 20 Nov 2022 20:07:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229838AbiKTUHw (ORCPT ); Sun, 20 Nov 2022 15:07:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52622 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229675AbiKTUHi (ORCPT ); Sun, 20 Nov 2022 15:07:38 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37BAD17AA3; Sun, 20 Nov 2022 12:07:36 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id BB9B960D2B; Sun, 20 Nov 2022 20:07:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 310B0C433D7; Sun, 20 Nov 2022 20:07:35 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.96) (envelope-from ) id 1owqbG-00Di5j-0t; Sun, 20 Nov 2022 15:07:34 -0500 Message-ID: <20221120200734.113566574@goodmis.org> User-Agent: quilt/0.66 Date: Sun, 20 Nov 2022 15:07:05 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Andrew Morton , , stable@vger.kernel.org, Wang Wensheng Subject: [for-linus][PATCH 05/13] ftrace: Fix the possible incorrect kernel message References: <20221120200700.725968899@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wang Wensheng If the number of mcount entries is an integer multiple of ENTRIES_PER_PAGE, the page count showing on the console would be wrong. Link: https://lkml.kernel.org/r/20221109094434.84046-2-wangwensheng4@huawei.com Cc: Cc: Cc: stable@vger.kernel.org Fixes: 5821e1b74f0d0 ("function tracing: fix wrong pos computing when read buffer has been fulfilled") Signed-off-by: Wang Wensheng Signed-off-by: Steven Rostedt (Google) --- kernel/trace/ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 7dc023641bf1..8b13ce2eae70 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -7391,7 +7391,7 @@ void __init ftrace_init(void) } pr_info("ftrace: allocating %ld entries in %ld pages\n", - count, count / ENTRIES_PER_PAGE + 1); + count, DIV_ROUND_UP(count, ENTRIES_PER_PAGE)); ret = ftrace_process_locs(NULL, __start_mcount_loc, -- 2.35.1