From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 22C3D79F4 for ; Sun, 11 Aug 2024 21:21:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723411295; cv=none; b=hCIq7vkwZjTnpOEEOiHm5yqEFBHJX4btWHatDSzabVsEhJMeJ02vrpFX59ZXZHL9ymeSLJzKgUX8wnbu4bVNRt5DxYg2xm5Wnq6N3OUTsQ1gKVHEpNYaCl2AKjQQc6cikVr4M8BsKBsKKf6w/l2t0h+poMJ9INSCW/n+OZxeIwM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723411295; c=relaxed/simple; bh=zdJH9lPfRzalvjW3zjAuD7vEMsNp2Y7O1sie0Q/il8Y=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=p+w3QuAh1PNL7QwkbgJZfTSODbi0ZU9IbRWRUIdaiHLdEG7L6rwOrg86T9hjWlPHEVR7Gim7TmQZofhQmlFozyg6ZQqzq/jSYfuHJcXKRysFzPWoxdydcIg/wN7EqSt6mIwRp9hemuJhzS4nZKbRJzsaOkI11vqak+EuLXMqQ1s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--yuzhao.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=p559lYce; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--yuzhao.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="p559lYce" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-672bea19dd3so85705757b3.1 for ; Sun, 11 Aug 2024 14:21:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1723411293; x=1724016093; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=mBxodn3ncL47aIchV0k38iOmKnnFrlE+aQTP6s51zh8=; b=p559lYcehw5QEWItECtwpAEWCzTpMKhzEexY/arfXA+fTN0rCrz/wkRDcKi30SYTie RcGnhypuoC3jgHPsQKv2x/oE+Z+ZOr/mI2rqqg2/pHr+u4N7X81u5ASLvQvaULoJ7OzV xBvnDAqHUeCQ0nCi38V+9X+V+3wAXJTpI7SuCXsBbjzpzvUSY8tvGD0v1icMkNW8WV/3 V26CXzmjeFMfrSaSnZVWSr9HWk+iFr2wg9bYijtw5Ks+yGcciZv+YWcs+v5mOtCXIjJJ Ij1Bs2e3idhsdazINqpw19Idbk1bRendQGcWLU3pIyxHCFovsJz0RXgUHE/3Z0wDHsPk CSVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723411293; x=1724016093; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=mBxodn3ncL47aIchV0k38iOmKnnFrlE+aQTP6s51zh8=; b=bXsGmpFw2Pg/oQo4m2DoXmsr91MhuyW4NX4YRvCUyI621J1/H5MHSN7+wd+iiaSeIh T0IEeSJfIkLFisF2OwPTfZ0OKq/xBMLSs+wE7fBJS7/bDz5Gemh86kmVrRDOAsaiBVal v4IDBu3Zlz8kIvABtVhWZpBpjSG4Kp4odD8qknocEkC8dRUxuVBzfTiBGi30cOLMSYFk HxkyZq4vXTnXTz72HnkHZS8Kqv5ipta3bPgLuTV8eYcb4BbSv8HDYtz+86RHKLLDrwEQ +5JiAiqP3IGTeFOdB6f8Y0z6Lt+0ij9Swst+JudMat68n0/ayU3S2zkwh73SqVxl6bbQ NL2A== X-Forwarded-Encrypted: i=1; AJvYcCXfqQoi8pXzbOOVr1dF23/vzrYtwXHLOElCNFyjT3C4gFiasildyOz2emBgEMYOBej0BQtiDeXxZo3DHWh2p+/ztDaIFKHrvrcQIssA X-Gm-Message-State: AOJu0YzBaRWFm4wqWCHO1tYjKQ0vlT4c88+VN0CJYNQUtSgRZBjElVGy 8r5BGvrMhXypqZOs9iL1EioH+HFjAo0bgKE2ZuIg3+wJ7YUkEqGlRFsliPNLjXhRzCem6/4rsDE T2A== X-Google-Smtp-Source: AGHT+IFDMuZv5daYo57AB4TlP3rAjpDKVJCYpQFPl2Vwy95c8vjlp62B/QB4tXK7JtoEaxQaoZ9BYYpvXVY= X-Received: from yuzhao2.bld.corp.google.com ([2a00:79e0:2e28:6:c9c:12b4:a1e3:7f10]) (user=yuzhao job=sendgmr) by 2002:a25:aa8e:0:b0:e02:ba8f:2bd5 with SMTP id 3f1490d57ef6-e0eb9a01882mr133827276.7.1723411292989; Sun, 11 Aug 2024 14:21:32 -0700 (PDT) Date: Sun, 11 Aug 2024 15:21:26 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.46.0.76.ge559c4bf1a-goog Message-ID: <20240811212129.3074314-1-yuzhao@google.com> Subject: [PATCH mm-unstable v1 0/3] mm/hugetlb: alloc/free gigantic folios From: Yu Zhao To: Andrew Morton , Muchun Song Cc: "Matthew Wilcox (Oracle)" , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Yu Zhao Content-Type: text/plain; charset="UTF-8" Use __GFP_COMP for gigantic folios can greatly reduce not only the complexity in the code but also the allocation and free time. Approximate LOC to mm/hugetlb.c: -200, +50 Allocate and free 500 1GB hugeTLB memory without HVO by: time echo 500 >/sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages time echo 0 >/sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages Before After Alloc ~13s ~10s Free ~15s <1s The above magnitude generally holds for multiple x86 and arm64 CPU models. Yu Zhao (3): mm/contig_alloc: support __GFP_COMP mm/cma: add cma_alloc_folio() mm/hugetlb: use __GFP_COMP for gigantic folios include/linux/cma.h | 1 + include/linux/hugetlb.h | 9 +- mm/cma.c | 47 +++++--- mm/compaction.c | 48 +------- mm/hugetlb.c | 244 ++++++++-------------------------------- mm/internal.h | 9 ++ mm/page_alloc.c | 111 +++++++++++++----- 7 files changed, 177 insertions(+), 292 deletions(-) base-commit: b447504e1fed49fabbc03d6c2530126824f87c92 prerequisite-patch-id: 9fe502f7c87a9f951d0aee61f426bd85bc43ef74 -- 2.46.0.76.ge559c4bf1a-goog