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Sun, 08 Jun 2025 00:36:03 -0700 (PDT) Received: from localhost.localdomain ([39.144.124.91]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-236035069c3sm35968135ad.234.2025.06.08.00.35.54 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 08 Jun 2025 00:36:03 -0700 (PDT) From: Yafang Shao To: akpm@linux-foundation.org, david@redhat.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, hannes@cmpxchg.org, usamaarif642@gmail.com, gutierrez.asier@huawei-partners.com, willy@infradead.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org Cc: bpf@vger.kernel.org, linux-mm@kvack.org, Yafang Shao Subject: [RFC PATCH v3 2/5] mm, thp: add bpf thp hook to determine thp allocator Date: Sun, 8 Jun 2025 15:35:13 +0800 Message-Id: <20250608073516.22415-3-laoar.shao@gmail.com> X-Mailer: git-send-email 2.37.1 (Apple Git-137.1) In-Reply-To: <20250608073516.22415-1-laoar.shao@gmail.com> References: <20250608073516.22415-1-laoar.shao@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit A new hook bpf_thp_allocator() is added to determine if the THP is allocated by khugepaged or by the current task. Signed-off-by: Yafang Shao --- include/linux/huge_mm.h | 10 ++++++++++ mm/khugepaged.c | 2 ++ 2 files changed, 12 insertions(+) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 2f190c90192d..db2eadd3f65b 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -190,6 +190,14 @@ static inline bool hugepage_global_always(void) (1<vm_mm->flags) && hugepage_pmd_enabled()) { if (__thp_vma_allowable_orders(vma, vm_flags, TVA_ENFORCE_SYSFS, -- 2.43.5