From patchwork Tue Sep 28 09:04:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiyaz Mohammed X-Patchwork-Id: 12522207 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 535CFC433F5 for ; Tue, 28 Sep 2021 09:04:51 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E051A6113E for ; Tue, 28 Sep 2021 09:04:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E051A6113E 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 7BAA2900003; Tue, 28 Sep 2021 05:04:50 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 76A6B900002; Tue, 28 Sep 2021 05:04:50 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 65952900003; Tue, 28 Sep 2021 05:04:50 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 56B08900002 for ; Tue, 28 Sep 2021 05:04:50 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 0C36E8249980 for ; Tue, 28 Sep 2021 09:04:50 +0000 (UTC) X-FDA: 78636397140.25.A70FF98 Received: from so254-9.mailgun.net (so254-9.mailgun.net [198.61.254.9]) by imf08.hostedemail.com (Postfix) with ESMTP id B399130000A9 for ; Tue, 28 Sep 2021 09:04:49 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1632819889; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=R237/v8v/nmLlhRkG5uGYpDMHZS5jcY1B3ZSLRJyF2E=; b=CJ98mPD1lwqfw4u26/sNs0YNfHolDBZd14jNNqAlvdzMuYLWGpaRJuWu4w/lr1p/CEcPhXim dUP8320BswVqZJ4X2eSGpG1KgHVVpBM6YHBNUm/MpXXm85DZ4Qgb7CSOslMVHOj3YnJQw/bE kVL4vWJk+nYeUOfACtKleOoONEY= X-Mailgun-Sending-Ip: 198.61.254.9 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-n01.prod.us-east-1.postgun.com with SMTP id 6152da939ffb413149956c75 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 28 Sep 2021 09:04:19 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 48188C43618; Tue, 28 Sep 2021 09:04:19 +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 CF244C4360D; Tue, 28 Sep 2021 09:04:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org CF244C4360D From: Faiyaz Mohammed To: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: guptap@codeaurora.org, Faiyaz Mohammed Subject: [PATCH v1] mm: page_alloc: Add debug log in free_reserved_area for static memory Date: Tue, 28 Sep 2021 14:34:09 +0530 Message-Id: <1632819849-511-1-git-send-email-faiyazm@codeaurora.org> X-Mailer: git-send-email 2.7.4 X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: B399130000A9 X-Stat-Signature: gs3fkxj993ncrgcpnsoqisb5of9kkx41 Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=mg.codeaurora.org header.s=smtp header.b=CJ98mPD1; spf=pass (imf08.hostedemail.com: domain of "bounce+d06763.be9e4a-linux-mm=kvack.org@mg.codeaurora.org" designates 198.61.254.9 as permitted sender) smtp.mailfrom="bounce+d06763.be9e4a-linux-mm=kvack.org@mg.codeaurora.org"; dmarc=none X-HE-Tag: 1632819889-615010 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: 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 memblock_dbg log in "free_reserved_area". After adding log: [ 0.294837] memblock_free: [0x00000083600000-0x00000083603000] free_initrd_mem+0x20/0x28 [ 0.294848] Freeing initrd memory: 12K. [ 0.695246] memblock_free: [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 b37435c..f85c3b2 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8129,6 +8129,11 @@ unsigned long free_reserved_area(void *start, void *end, int poison, const char pr_info("Freeing %s memory: %ldK\n", s, pages << (PAGE_SHIFT - 10)); +#ifdef CONFIG_HAVE_MEMBLOCK + memblock_dbg("memblock_free: [%#016llx-%#016llx] %pS\n", + __pa(start), __pa(end), (void *)_RET_IP_); +#endif + return pages; }