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 BC113C433FE for ; Wed, 9 Nov 2022 09:46:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230062AbiKIJqT (ORCPT ); Wed, 9 Nov 2022 04:46:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229882AbiKIJqO (ORCPT ); Wed, 9 Nov 2022 04:46:14 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFDAD23160 for ; Wed, 9 Nov 2022 01:46:12 -0800 (PST) Received: from kwepemi500015.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4N6g856WSRzmVln; Wed, 9 Nov 2022 17:45:57 +0800 (CST) Received: from huawei.com (10.175.112.208) by kwepemi500015.china.huawei.com (7.221.188.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 9 Nov 2022 17:46:10 +0800 From: Wang Wensheng To: , , , CC: , , Subject: [PATCH -next 2/3] ftrace: Optimize the allocation for mcount entries Date: Wed, 9 Nov 2022 09:44:33 +0000 Message-ID: <20221109094434.84046-3-wangwensheng4@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221109094434.84046-1-wangwensheng4@huawei.com> References: <20221109094434.84046-1-wangwensheng4@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.112.208] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi500015.china.huawei.com (7.221.188.92) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If we can't allocate this size, try something smaller with half of the size. Its order should be decreased by one instead of divided by two. Signed-off-by: Wang Wensheng --- 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 c571c2813c11..43a958b28022 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -3200,7 +3200,7 @@ static int ftrace_allocate_records(struct ftrace_page *pg, int count) /* if we can't allocate this size, try something smaller */ if (!order) return -ENOMEM; - order >>= 1; + order--; goto again; } -- 2.17.1