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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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: E2DA3140004 X-Stat-Signature: beh5ozykhmq1co4qurctugpmeqqwhbbj X-Rspam-User: X-Rspamd-Server: rspam07 X-HE-Tag: 1749368164-911891 X-HE-Meta: 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 Z7XR3E24 F9dycN6KBKITSj//Pw9AJXUYiMiTgkkzRlsn+qLGEUyxXkUbpw4cZBkUe7bcWQLi4UKZN1C4MyjIXE3Dynxc+v9DQhPm7NZEcVAu1JiQj8PFJoFwcKaR9dxYwM1AjzWwGvokUBlvB6e5ePr3OKZ4s+jDIcs8i2t0x5Gr2BL9P2MvMcaW5tqr1zlmMzNafgqe19u5Q9VFa8dZk0MNCNw+p4rPbt1Ial1ZbwhbPM6t2fq+wN4tWk4n/FkwXoasm2lDb6aQNJQHnSR9Vkg65WhMtnw/Vj400VIiYjefjR+BKEL5p4w8HZddiJ9yjdI8vN6OcnBDm+HSlgHHU5YyROpgvK9JA8oaGDdKW97K9DJrv6z1AIAg1K+In37KhgVqYxsJxP85Ko23C+8iEXWZtM3WSbl7WefpXzSJE+WqhlvzWFq13orCnhYchmUbBEG+87xTm9LmUwJP1yYtJmBQt4UWjMLVkHg9V+DCmPPIQ 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: 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