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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7d5866269a8sm4324502a34.13.2026.02.27.06.07.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Feb 2026 06:07:01 -0800 (PST) From: Yuvraj Sakshith To: akpm@linux-foundation.org Cc: mst@redhat.com, david@kernel.org, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, jackmanb@google.com, hannes@cmpxchg.org, ziy@nvidia.com, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/4] page_reporting: add PAGE_REPORTING_DEFAULT_ORDER Date: Fri, 27 Feb 2026 06:06:52 -0800 Message-Id: <20260227140655.360696-2-yuvraj.sakshith@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260227140655.360696-1-yuvraj.sakshith@oss.qualcomm.com> References: <20260227140655.360696-1-yuvraj.sakshith@oss.qualcomm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: hD2noLic1TJf3QQhFB8N9qDwsqDgl-3B X-Authority-Analysis: v=2.4 cv=Vtouwu2n c=1 sm=1 tr=0 ts=69a1a507 cx=c_pps a=7uPEO8VhqeOX8vTJ3z8K6Q==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=agIWOxjPXKrzBStnBTYA:9 a=EXS-LbY8YePsIyqnH6vw:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjI3MDEyNSBTYWx0ZWRfX78RA3hAtymIl eEa+vW8M2IvQukfjt5Kke/dBQxfKJtYdEfHQmQiBlCJ1rUoBOXSYMrTAmyZk1clhvfHKP4Opc9Z YeJTLQFWloCWpXbyXaXP9VQyauqBqJU9r1jfNtOoSm8oSB/zYHtajKYjv9BzWxFkVOWGW4nZwwn ZAxSMlhgen5njynpvM3phQhxIJ5Tpj2kFUk16yiExfAi+s1nBvzyVTciyOmd9g+lnzTGWpVO0v2 xTWaXTvuV1aUCKqZfcxkquJMdRemPjlAu9fzLNjnxfpn6dUcjmSYmNrT22AEPxAhGm0JRfQgyXl hRUnA1H4BSsIB3Dr9aCLbKojO+PZWW3TswLj4nlnxcYmRpDFvGqMRDZFXOFx6IZEp82lGs2A4Pa aNn6TjQqsaTiXV1llkEECPfVvELCSNVc+xk7PuqcAC266z+wenYGYxldLhHvVg7VgTpl7Z5Wk1d HoTme/vaqsVnSxzd65Q== X-Proofpoint-GUID: hD2noLic1TJf3QQhFB8N9qDwsqDgl-3B X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-27_02,2026-02-27_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 phishscore=0 bulkscore=0 spamscore=0 impostorscore=0 suspectscore=0 adultscore=0 malwarescore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2602270125 X-Stat-Signature: hgas8g9pyu9x3rfokoczbdkptx9wf3ms X-Rspamd-Queue-Id: 7C34E80014 X-Rspamd-Server: rspam07 X-Rspam-User: X-HE-Tag: 1772201224-695707 X-HE-Meta: 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 6J93KLRP 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Drivers can pass order of pages to be reported while registering itself. Today, this is a magic number, 0. Label this with PAGE_REPORTING_DEFAULT_ORDER and check for it when the driver is being registered. Signed-off-by: Yuvraj Sakshith --- include/linux/page_reporting.h | 1 + mm/page_reporting.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/page_reporting.h b/include/linux/page_reporting.h index fe648dfa3..a7e3e30f2 100644 --- a/include/linux/page_reporting.h +++ b/include/linux/page_reporting.h @@ -7,6 +7,7 @@ /* This value should always be a power of 2, see page_reporting_cycle() */ #define PAGE_REPORTING_CAPACITY 32 +#define PAGE_REPORTING_DEFAULT_ORDER 0 struct page_reporting_dev_info { /* function that alters pages to make them "reported" */ diff --git a/mm/page_reporting.c b/mm/page_reporting.c index e4c428e61..9ad4fc3f8 100644 --- a/mm/page_reporting.c +++ b/mm/page_reporting.c @@ -370,7 +370,8 @@ int page_reporting_register(struct page_reporting_dev_info *prdev) */ if (page_reporting_order == -1) { - if (prdev->order > 0 && prdev->order <= MAX_PAGE_ORDER) + if (prdev->order != PAGE_REPORTING_DEFAULT_ORDER && + prdev->order <= MAX_PAGE_ORDER) page_reporting_order = prdev->order; else page_reporting_order = pageblock_order; -- 2.34.1