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 gYsZEJn5 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 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: * Usama Arif [250519 18:34]: > This series allows to change the THP policy of a process, according to the > value set in arg2, all of which will be inherited during fork+exec: > - PR_DEFAULT_MADV_HUGEPAGE: This will set VM_HUGEPAGE and clear VM_NOHUGEPAGE > for the default VMA flags. It will also iterate through every VMA in the > process and call hugepage_madvise on it, with MADV_HUGEPAGE policy. > This effectively allows setting MADV_HUGEPAGE on the entire process. > In an environment where different types of workloads are run on the > same machine, this will allow workloads that benefit from always having > hugepages to do so, without regressing those that don't. > - PR_DEFAULT_MADV_NOHUGEPAGE: This will set VM_NOHUGEPAGE and clear VM_HUGEPAGE > for the default VMA flags. It will also iterate through every VMA in the > process and call hugepage_madvise on it, with MADV_NOHUGEPAGE policy. > This effectively allows setting MADV_NOHUGEPAGE on the entire process. > In an environment where different types of workloads are run on the > same machine,this will allow workloads that benefit from having > hugepages on an madvise basis only to do so, without regressing those > that benefit from having hugepages always. > - PR_THP_POLICY_SYSTEM: This will reset (clear) both VM_HUGEPAGE and > VM_NOHUGEPAGE process for the default flags. > Subject seems outdated now? PR_DEFAULT_ vs PR_SET/GET_THP ? On that note, doesn't it make sense to change the default mm flag under PR_SET_MM? PR_SET_MM_FLAG maybe? Thanks, Liam