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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A93FC433EF for ; Tue, 28 Sep 2021 09:04:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A480611F0 for ; Tue, 28 Sep 2021 09:04:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239823AbhI1JGA (ORCPT ); Tue, 28 Sep 2021 05:06:00 -0400 Received: from so254-9.mailgun.net ([198.61.254.9]:25401 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239618AbhI1JF7 (ORCPT ); Tue, 28 Sep 2021 05:05:59 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1632819860; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=R237/v8v/nmLlhRkG5uGYpDMHZS5jcY1B3ZSLRJyF2E=; b=w4ThUSGrTg2qtaEBmo+Ggu0yEzpd5iND3dofX1KpEJPBkeAlUyXkJhMXyZQSxgpDv6K/jbuX dUfbxzKwmVuvbPff8GYJrR4+XQP1K88W5MrorPYYDOUyS6UHb6K3ScH8BfcxFz5nydGwHzB1 zKdG8MqepO8sCA3t8RMxJIXBCrc= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n02.prod.us-east-1.postgun.com with SMTP id 6152da94713d5d6f968b7a65 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 28 Sep 2021 09:04:20 GMT Sender: faiyazm=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 51EB4C43617; 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 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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; } -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation