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Tue, 18 Jul 2023 02:30:07 GMT Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DD3D258057; Tue, 18 Jul 2023 02:30:06 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A251B58063; Tue, 18 Jul 2023 02:30:01 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.43.62.199]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 18 Jul 2023 02:30:01 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org, mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, npiggin@gmail.com, christophe.leroy@csgroup.eu Subject: [PATCH v5 04/13] mm/vmemmap: Allow architectures to override how vmemmap optimization works Date: Tue, 18 Jul 2023 07:59:24 +0530 Message-ID: <20230718022934.90447-5-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230718022934.90447-1-aneesh.kumar@linux.ibm.com> References: <20230718022934.90447-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 4F2PEm_-2Xa0PIbil-uLAoe49QfY84es X-Proofpoint-ORIG-GUID: 6D-tzirphg-NKheSGEm5AarzoEFL2Frd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-17_15,2023-07-13_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 clxscore=1015 impostorscore=0 adultscore=0 phishscore=0 spamscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180017 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Catalin Marinas , Muchun Song , "Aneesh Kumar K.V" , Dan Williams , Oscar Salvador , Will Deacon , Joao Martins , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Architectures like powerpc will like to use different page table allocators and mapping mechanisms to implement vmemmap optimization. Similar to vmemmap_populate allow architectures to implement vmemap_populate_compound_pages Signed-off-by: Aneesh Kumar K.V --- mm/sparse-vmemmap.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c index a044a130405b..a2cbe44c48e1 100644 --- a/mm/sparse-vmemmap.c +++ b/mm/sparse-vmemmap.c @@ -358,6 +358,7 @@ int __meminit vmemmap_populate_hugepages(unsigned long start, unsigned long end, return 0; } +#ifndef vmemmap_populate_compound_pages /* * For compound pages bigger than section size (e.g. x86 1G compound * pages with 2M subsection size) fill the rest of sections as tail @@ -446,6 +447,8 @@ static int __meminit vmemmap_populate_compound_pages(unsigned long start_pfn, return 0; } +#endif + struct page * __meminit __populate_section_memmap(unsigned long pfn, unsigned long nr_pages, int nid, struct vmem_altmap *altmap, struct dev_pagemap *pgmap) -- 2.41.0