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 9E1DCC433F5 for ; Mon, 18 Oct 2021 06:54:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F7936108E for ; Mon, 18 Oct 2021 06:54:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230312AbhJRG45 (ORCPT ); Mon, 18 Oct 2021 02:56:57 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:29181 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229533AbhJRG44 (ORCPT ); Mon, 18 Oct 2021 02:56:56 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1634540085; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=kRLvLWSgDASbo/0146rVlR7sWyBcf7/zvf5aC/0dPE8=; b=jJc5zPrdBPpEgD/SsVF/6rpKFDXsMSwtOb838mZ9yd8FDYz/T+c4NN6AP8KmhSLVDusrQpQl 17zM24cbOOPVknt5yEhOOE4kyAxuLQ4JyrSMOzV/+p3oSiogFQlznW2XKXU2AwX5po4LbeTL 8e35JeXvsSXcgHRpX1uRzkEcv6c= X-Mailgun-Sending-Ip: 69.72.43.7 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 616d1a21ab9da96e64d6aa40 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 18 Oct 2021 06:54:25 GMT Sender: faiyazm=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C9F5EC4360C; Mon, 18 Oct 2021 06:54:24 +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 C2D64C4338F; Mon, 18 Oct 2021 06:54:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org C2D64C4338F 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, david@redhat.com Cc: guptap@codeaurora.org, Faiyaz Mohammed Subject: [PATCH v4] mm: page_alloc: Add debug log in free_reserved_area for static memory Date: Mon, 18 Oct 2021 12:24:13 +0530 Message-Id: <1634540053-23304-1-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 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 v4: - Use correctly _RET_IP_ macro. 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..19ca193 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; } -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation