From nobody Fri Sep 20 01:29:24 2024 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 11F5F1BA899; Wed, 31 Jul 2024 12:51:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722430263; cv=none; b=uofYGt/DqQAltI0HvsEphbTcGkx9RjaCwB9wnHoLJPyMNlO/jN7W9O3td9P5VG6W2LO107ThhBN9ri9cplpgGnAKCxyje54el5EoJs6vRiFNgnM4SExPHWEz3n0gPqp6NFrWFVQPfdT+rtKD9DnTAPxABlIdGOi6n/VspElX0BM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722430263; c=relaxed/simple; bh=jDuVyCWta/idaAgYBEfQvZQEjbm4A7Ks7WBdHt98pL8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=mJuspdtdXp6+7F4dKE2ggWIiakqYpbpNcnsJMYJqvDA1bqqswGRzxe/KSzQGrkRpHchhq5rG3+hLey3UtE1bhG1M3Cxf1VWCsjrvgmHkaX/DcnKA4ngPgfffMCUenY8kidWXGXqJHSQjZm5OiBx0MljYLicYFoLJO6Ow31lLELg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.252]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4WYsQc3847zxW1g; Wed, 31 Jul 2024 20:50:48 +0800 (CST) Received: from dggpemf200006.china.huawei.com (unknown [7.185.36.61]) by mail.maildlp.com (Postfix) with ESMTPS id 2933C180AE3; Wed, 31 Jul 2024 20:51:00 +0800 (CST) Received: from localhost.localdomain (10.90.30.45) by dggpemf200006.china.huawei.com (7.185.36.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Wed, 31 Jul 2024 20:50:59 +0800 From: Yunsheng Lin To: , , CC: , , Yunsheng Lin , Alexander Duyck , Andrew Morton , Subject: [PATCH net-next v12 09/14] mm: page_frag: use __alloc_pages() to replace alloc_pages_node() Date: Wed, 31 Jul 2024 20:44:59 +0800 Message-ID: <20240731124505.2903877-10-linyunsheng@huawei.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20240731124505.2903877-1-linyunsheng@huawei.com> References: <20240731124505.2903877-1-linyunsheng@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemf200006.china.huawei.com (7.185.36.61) Content-Type: text/plain; charset="utf-8" There are more new APIs calling __page_frag_cache_refill() in this patchset, which may cause compiler not being able to inline __page_frag_cache_refill() into __page_frag_alloc_va_align(). Not being able to do the inlining seems to cause some notiable performance degradation in arm64 system with 64K PAGE_SIZE after adding new API calling __page_frag_cache_refill(). It seems there is about 24Bytes binary size increase for __page_frag_cache_refill() and __page_frag_cache_refill() in arm64 system with 64K PAGE_SIZE. By doing the gdb disassembling, It seems we can have more than 100Bytes decrease for the binary size by using __alloc_pages() to replace alloc_pages_node(), as there seems to be some unnecessary checking for nid being NUMA_NO_NODE, especially when page_frag is still part of the mm system. CC: Alexander Duyck Signed-off-by: Yunsheng Lin --- mm/page_frag_cache.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/page_frag_cache.c b/mm/page_frag_cache.c index aa6eef55bb9c..a24d6d5278d1 100644 --- a/mm/page_frag_cache.c +++ b/mm/page_frag_cache.c @@ -48,11 +48,11 @@ static bool __page_frag_cache_refill(struct page_frag_c= ache *nc, #if (PAGE_SIZE < PAGE_FRAG_CACHE_MAX_SIZE) gfp_mask =3D (gfp_mask & ~__GFP_DIRECT_RECLAIM) | __GFP_COMP | __GFP_NOWARN | __GFP_NORETRY | __GFP_NOMEMALLOC; - page =3D alloc_pages_node(NUMA_NO_NODE, gfp_mask, - PAGE_FRAG_CACHE_MAX_ORDER); + page =3D __alloc_pages(gfp_mask, PAGE_FRAG_CACHE_MAX_ORDER, + numa_mem_id(), NULL); #endif if (unlikely(!page)) { - page =3D alloc_pages_node(NUMA_NO_NODE, gfp, 0); + page =3D __alloc_pages(gfp, 0, numa_mem_id(), NULL); if (unlikely(!page)) { memset(nc, 0, sizeof(*nc)); return false; --=20 2.33.0