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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1745748296; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XKKLGxZU8OZ2xGEdKDaDexux1b0MqIrEZ+95uLGz+D4=; b=WjpksMWSRMcE8F8KxbqeV1cjbX+wDqK4BuuChXc4mi7qsHRsc/1iSo9Q/yCcEh268rwn4j pDWluFmC9NpuQd0lvXyo5a6nozSR8s4D02IkiIv9TExrWI4lNyRen8Rjiv1/JQTMUL3JmT Kf/5gN5EHDdrxrFh6RQVhStNNkOO3ZQ= From: Ye Liu To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@kernel.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, david@redhat.com, harry.yoo@oracle.com, riel@surriel.com, vbabka@suse.cz, liuye@kylinos.cn, ye.liu@linux.dev Subject: [PATCH 2/3] mm/debug_page_alloc: improve error message for invalid guardpage minorder Date: Sun, 27 Apr 2025 18:04:41 +0800 Message-Id: <20250427100442.958352-3-ye.liu@linux.dev> In-Reply-To: <20250427100442.958352-1-ye.liu@linux.dev> References: <20250427100442.958352-1-ye.liu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 745B740009 X-Stat-Signature: c6a1weqzgdjpkswsekbf4hnmm1gkxqm8 X-HE-Tag: 1745748298-446780 X-HE-Meta: U2FsdGVkX1+0f9ioKhnH8aYeT/fzavVvIP3ElafvyXZOei+/C6zYTc0C6QSAX8cWmfuyXODoHaFOn6vegmhVO1EPgskPhneLDeF1FXbCNELiw+D+2OIHnzMcqdpE+Ko7m+ia5hz8kE2vEJ+VGoJLfPT14y+yC5gOhUlZm5vCsHqE87VHIzEkAONX3MvnIyerot/gGAQeTDZ6uholZglCyeV/wzHuClXY7kTRXFP5bTyaiZ/4hETtikvd4CCtq1FrzNRyuGXE1K1Gn091kHLKbRlvgAZBZrgwIM9/hpA0zLo/78f1LGxuERmXx6jLucKiyNCOopMnTmslFiOfodUFKHjjHJ8uA2UD+D5kgznF5cW1qWyyavWHC0/lczk+UcGm4TcfyA7pRX/4xnNMNMRzzUUNB/xSleUSrB/XgPdK3CkSvv6YvkUgumZiOixi94cJXjxbCuHrBxZuK3o1gyjap4Q5zY94FOP7fyxE+rKerZGOUFgWnxEvZR0IEGqqFk05w3NH/43lsZ51h5idAvEXdkKkxyMQ2iw4yq3xnxpxvgmLSrHtZiDjJ+dDngclBtaOrs2dkiUDgLBEgs4uOAVSjY7GRKpu71yXa+ADbFBJzyVFwUeLy8vSalgdg0DPss0xWDsrGNst4i8+B6w1ilypTreTZMBHp+WlBR+o73AMjKxZ7VOw1WiKhhj0IyW8xs0HE5WveXv9yhsGwtYu8mMUseQad1I9idafXZ1BSySz5totO5XMRYTjxYyZgiIJ9lS8fROg7XSYYXayzOririEuOIv8YRSmgRZbaN81OnO/0pmn/JDsx2ouIvBXXhxOGQD+XabPFFfnzwZyPklg7cmnTXkJvZLynrKiKLi27pBeZwrJNjmOu97pCHFc/4liZoikwjwVAJtlXFb2mvF+GN7l58591mMPRUZxEG+bevl8OOckRUbwREum5F9witPiaQItOVdpormxUBIm9GSAuOG x994bLMX 8qloHuUdv8/tuke+gN+xZ0GYx/43qsPChQDpXwNgL5wVmslBMVFG64sIa4sBbAHF71iXijdA6XqM8fuDeZMoIZdzuPmf1+DEUumOAWWCcmbbDr8xXS7PI/6/SQ3DMY0FCojR/6Gg7jlLdz2vAkY2719M9P9ufVjmXFdiau6EIK/BtkN87HdM5eQU9dV8Ml/xBIfaXzFcSEOgjDvrr/yWGJFNnFnYHi5dxrP/T 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: List-Subscribe: List-Unsubscribe: From: Ye Liu When an invalid debug_guardpage_minorder value is provided, include the user input in the error message. This helps users and developers diagnose configuration issues more easily. No functional change. Signed-off-by: Ye Liu --- mm/debug_page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/debug_page_alloc.c b/mm/debug_page_alloc.c index d46acf989dde..6a26eca546c3 100644 --- a/mm/debug_page_alloc.c +++ b/mm/debug_page_alloc.c @@ -23,7 +23,7 @@ static int __init debug_guardpage_minorder_setup(char *buf) unsigned long res; if (kstrtoul(buf, 10, &res) < 0 || res > MAX_PAGE_ORDER / 2) { - pr_err("Bad debug_guardpage_minorder value\n"); + pr_err("Bad debug_guardpage_minorder value: %s\n", buf); return 0; } _debug_guardpage_minorder = res; -- 2.25.1