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Wed, 27 Mar 2024 08:23:37 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFplzIHsd2VycAjj5oUNWAa5qW9RFPqJwKtRaT5aqzv2S9fkhcwA1AKc/2h1PXS7yh/3x/6aw== X-Received: by 2002:a05:6214:5d11:b0:690:3c85:c5b with SMTP id me17-20020a0562145d1100b006903c850c5bmr14918682qvb.3.1711553016992; Wed, 27 Mar 2024 08:23:36 -0700 (PDT) Received: from x1n.redhat.com ([99.254.121.117]) by smtp.gmail.com with ESMTPSA id hu4-20020a056214234400b00690dd47a41csm6412639qvb.86.2024.03.27.08.23.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Mar 2024 08:23:36 -0700 (PDT) From: peterx@redhat.com To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 01/13] mm/Kconfig: CONFIG_PGTABLE_HAS_HUGE_LEAVES Date: Wed, 27 Mar 2024 11:23:20 -0400 Message-ID: <20240327152332.950956-2-peterx@redhat.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240327152332.950956-1-peterx@redhat.com> References: <20240327152332.950956-1-peterx@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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: James Houghton , David Hildenbrand , Yang Shi , peterx@redhat.com, Andrew Jones , linux-riscv@lists.infradead.org, Andrea Arcangeli , Christoph Hellwig , Matthew Wilcox , "Aneesh Kumar K . V" , linux-arm-kernel@lists.infradead.org, Jason Gunthorpe , Axel Rasmussen , Rik van Riel , John Hubbard , "Kirill A . Shutemov" , Vlastimil Babka , Lorenzo Stoakes , Muchun Song , Andrew Morton , linuxppc-dev@lists.ozlabs.org, Mike Rapoport , Mike Kravetz Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Peter Xu Introduce a config option that will be selected as long as huge leaves are involved in pgtable (thp or hugetlbfs). It would be useful to mark any code with this new config that can process either hugetlb or thp pages in any level that is higher than pte level. Reviewed-by: Jason Gunthorpe Signed-off-by: Peter Xu --- mm/Kconfig | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/Kconfig b/mm/Kconfig index b924f4a5a3ef..497cdf4d8ebf 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -850,6 +850,12 @@ config READ_ONLY_THP_FOR_FS endif # TRANSPARENT_HUGEPAGE +# +# The architecture supports pgtable leaves that is larger than PAGE_SIZE +# +config PGTABLE_HAS_HUGE_LEAVES + def_bool TRANSPARENT_HUGEPAGE || HUGETLB_PAGE + # # UP and nommu archs use km based percpu allocator #