From patchwork Mon Oct 11 07:11:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiyaz Mohammed X-Patchwork-Id: 12549203 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 A7BB4C433EF for ; Mon, 11 Oct 2021 07:11:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5D33F60E53 for ; Mon, 11 Oct 2021 07:11:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5D33F60E53 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 E534A6B0071; Mon, 11 Oct 2021 03:11:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E03476B0072; Mon, 11 Oct 2021 03:11:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CF32B6B0073; Mon, 11 Oct 2021 03:11:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0176.hostedemail.com [216.40.44.176]) by kanga.kvack.org (Postfix) with ESMTP id C02B96B0071 for ; Mon, 11 Oct 2021 03:11:35 -0400 (EDT) Received: from smtpin35.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 817712C6B4 for ; Mon, 11 Oct 2021 07:11:35 +0000 (UTC) X-FDA: 78683286150.35.9CBC15C Received: from so254-9.mailgun.net (so254-9.mailgun.net [198.61.254.9]) by imf13.hostedemail.com (Postfix) with ESMTP id CC50D103F5AC for ; Mon, 11 Oct 2021 07:11:34 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1633936294; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=SxkqQM4LqWhI9JoDud74skgu9QyWuT32tUB57PZ42fM=; b=mUQJsh+0XIxC1BqybphiEg9XmlhhrPVwa+lZDCb0GTRVDL/sYlv6PdoCHnIzNTrAsNxHksxx eKlaKVPbIHfNSdyb9ZDLJfyuVhxYEBvrwH+VDUf6QbAkArP8x60ZXSf1Op6j3Y9rpWxzTMNO trHfi14pdlxrdKfumcNelUMNqv4= 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-n03.prod.us-east-1.postgun.com with SMTP id 6163e3a6a45ca75307788fc2 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 11 Oct 2021 07:11:34 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 43542C43460; Mon, 11 Oct 2021 07:11:33 +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 BCB74C4338F; Mon, 11 Oct 2021 07:11:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org BCB74C4338F 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 12:41:19 +0530 Message-Id: <1633936279-26856-1-git-send-email-quic_faiyazm@codeaurora.org> X-Mailer: git-send-email 2.7.4 X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: CC50D103F5AC X-Stat-Signature: urm5iz73u7nx6bz18pzypoy3tui3joxf Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=mg.codeaurora.org header.s=smtp header.b=mUQJsh+0; spf=pass (imf13.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: 1633936294-216064 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 --- changes in v2: - To avoid confusion, remove the memblock_dbg print and drop the memblock_free string, now using pr_debug to print the address ranges. mm/page_alloc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 668edb1..395df3f 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 + pr_debug("%#016llx-%#016llx %pS\n", + __pa(start), __pa(end), (void *)_RET_IP_); +#endif + return pages; }