From patchwork Mon Oct 11 06:55:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiyaz Mohammed X-Patchwork-Id: 12549115 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 254D5C433EF for ; Mon, 11 Oct 2021 06:56:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B953860EE2 for ; Mon, 11 Oct 2021 06:56:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B953860EE2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 145B3900002; Mon, 11 Oct 2021 02:56:23 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0F66D6B0071; Mon, 11 Oct 2021 02:56:23 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F26F6900002; Mon, 11 Oct 2021 02:56:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0213.hostedemail.com [216.40.44.213]) by kanga.kvack.org (Postfix) with ESMTP id E6D406B006C for ; Mon, 11 Oct 2021 02:56:22 -0400 (EDT) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 921082D22B for ; Mon, 11 Oct 2021 06:56:22 +0000 (UTC) X-FDA: 78683247804.08.8EC98B3 Received: from m43-7.mailgun.net (m43-7.mailgun.net [69.72.43.7]) by imf14.hostedemail.com (Postfix) with ESMTP id B98DB6005BA1 for ; Mon, 11 Oct 2021 06:56:21 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1633935382; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=tjHHeu140fjSJ+/1+yMsselJ+YyD99qZcQLTFZE1hkc=; b=YZWRcBelLyZZMaVS2E/2bFJcZv8FWNpLCV2GYJrmNc0X8iWyGhiG+HrRqtS+ck2mp1ZZZIdE e2p7EAUhkPmvsu65cirsqvYqEQnW94N9Vol5t9zCGjQHrWtnBnGUSnQL2Sew/T9lh7mn1gx2 GWDNVK8CUyDQUpDCOyn5Gm1Xj/w= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyIwY2Q3OCIsICJsaW51eC1tbUBrdmFjay5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 6163e0134ccc4cf2c7ac3696 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 11 Oct 2021 06:56:19 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 66F53C4360D; Mon, 11 Oct 2021 06:56:19 +0000 (UTC) Received: from faiyazm-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: faiyazm) by smtp.codeaurora.org (Postfix) with ESMTPSA id 067CBC4338F; Mon, 11 Oct 2021 06:56:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org 067CBC4338F From: Faiyaz Mohammed To: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, david@redhat.com Cc: guptap@codeaurora.org, Faiyaz Mohammed Subject: [PATCH v2] mm: page_alloc: Add debug log in free_reserved_area for static memory Date: Mon, 11 Oct 2021 12:25:50 +0530 Message-Id: <1633935350-19628-1-git-send-email-quic_faiyazm@codeaurora.org> X-Mailer: git-send-email 2.7.4 X-Rspamd-Queue-Id: B98DB6005BA1 X-Stat-Signature: 6qiyckozqhnjc58h5dcddo4dnxp5bjar Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=mg.codeaurora.org header.s=smtp header.b=YZWRcBel; spf=pass (imf14.hostedemail.com: domain of "bounce+d06763.be9e4a-linux-mm=kvack.org@mg.codeaurora.org" designates 69.72.43.7 as permitted sender) smtp.mailfrom="bounce+d06763.be9e4a-linux-mm=kvack.org@mg.codeaurora.org"; dmarc=none X-Rspamd-Server: rspam06 X-HE-Tag: 1633935381-519757 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Faiyaz Mohammed For INITRD and initmem memory is reserved through "memblock_reserve" during boot up but it is free via "free_reserved_area" instead of "memblock_free". For example: [ 0.294848] Freeing initrd memory: 12K. [ 0.696688] Freeing unused kernel memory: 4096K. To get the start and end address of the above freed memory and to account proper memblock added pr_debug log in "free_reserved_area". After adding log: [ 0.294837] 0x00000083600000-0x00000083603000 free_initrd_mem+0x20/0x28 [ 0.294848] Freeing initrd memory: 12K. [ 0.695246] 0x00000081600000-0x00000081a00000 free_initmem+0x70/0xc8 [ 0.696688] Freeing unused kernel memory: 4096K. Signed-off-by: Faiyaz Mohammed --- mm/page_alloc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 668edb1..8a1929d4 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8153,6 +8153,11 @@ unsigned long free_reserved_area(void *start, void *end, int poison, const char if (pages && s) pr_info("Freeing %s memory: %ldK\n", s, K(pages)); +#ifdef CONFIG_HAVE_MEMBLOCK + memblock_dbg("memblock_free: [%#016llx-%#016llx] %pS\n", + __pa(start), __pa(end), (void *)_RET_IP_); +#endif + return pages; }