From patchwork Thu Oct 14 07:12:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiyaz Mohammed X-Patchwork-Id: 12557839 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 E328DC433EF for ; Thu, 14 Oct 2021 07:13:00 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 915F0610EA for ; Thu, 14 Oct 2021 07:13:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 915F0610EA 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 1B9F36B00A8; Thu, 14 Oct 2021 03:13:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1696C94001C; Thu, 14 Oct 2021 03:13:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 058C76B00AA; Thu, 14 Oct 2021 03:13:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0183.hostedemail.com [216.40.44.183]) by kanga.kvack.org (Postfix) with ESMTP id EA4966B00A8 for ; Thu, 14 Oct 2021 03:12:59 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 9EC3C32066 for ; Thu, 14 Oct 2021 07:12:59 +0000 (UTC) X-FDA: 78694176078.07.2F22C26 Received: from so254-9.mailgun.net (so254-9.mailgun.net [198.61.254.9]) by imf15.hostedemail.com (Postfix) with ESMTP id 99F57D000096 for ; Thu, 14 Oct 2021 07:12:58 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1634195579; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=mRIWE8f6XRNaCkd6Yf1vosVkmzQcwujpWypJxd42mWM=; b=SqjmtNBYPocs0IZPNhV3vxj7zcp87HoYxLNWLvdMXqp8ZMxFiDMVH9Rcx1YPO8ALSrLKeL6p Qo0FcU4gH6PVCntJullzxcv09CT2f23wLS4cDS9UAlTKGyUIzU0FM+F2h5MT7Ae52zCQB2ny BlmDsjii7Bf+myR/Qw3wvC6426I= 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-west-2.postgun.com with SMTP id 6167d87930ce13d2b43df0b6 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 14 Oct 2021 07:12:57 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 59D3FC43460; Thu, 14 Oct 2021 07:12:57 +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 DCBFAC4360C; Thu, 14 Oct 2021 07:12:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org DCBFAC4360C 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 v3] mm: page_alloc: Add debug log in free_reserved_area for static memory Date: Thu, 14 Oct 2021 12:42:44 +0530 Message-Id: <1634195564-14048-1-git-send-email-faiyazm@codeaurora.org> X-Mailer: git-send-email 2.7.4 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 99F57D000096 X-Stat-Signature: q9e79zwbg4wws3zu5mywbf7it4wxumxp Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=mg.codeaurora.org header.s=smtp header.b=SqjmtNBY; spf=pass (imf15.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: 1634195578-47264 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, 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 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 Acked-by: David Hildenbrand Reported-by: kernel test robot Reported-by: kernel test robot --- changes in v3: - Update the format specifier. 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 | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b37435c..13adda5 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8097,6 +8097,8 @@ EXPORT_SYMBOL(adjust_managed_page_count); unsigned long free_reserved_area(void *start, void *end, int poison, const char *s) { + const phys_addr_t pstart = __pa(start); + const phys_addr_t pend = __pa(end); void *pos; unsigned long pages = 0; @@ -8125,9 +8127,12 @@ unsigned long free_reserved_area(void *start, void *end, int poison, const char free_reserved_page(page); } - if (pages && s) + if (pages && s) { pr_info("Freeing %s memory: %ldK\n", s, pages << (PAGE_SHIFT - 10)); + pr_debug("[%pa-%pa] %pS\n", &pstart, &pend, + (void *)__RET_IP_); + } return pages; }