From patchwork Sat Feb 17 04:50:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Barry Song <21cnbao@gmail.com> X-Patchwork-Id: 13561226 Received: from mail-oa1-f46.google.com (mail-oa1-f46.google.com [209.85.160.46]) (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 5FC2933CA; Sat, 17 Feb 2024 04:51:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708145483; cv=none; b=Ibn4WBu4v/8Mj7sUPd8fjc+9ZYtHFNeYr5uu220Ch2qoQH/KPQpCKPRmNGillP8JiDRiRnmD+QOx2kMZXV/RNNMegoAqBhjzOPNthkjGcUkZOSBSdKmTf4c5Gy8veKwkA0s6+EZEQjqk73AJL+kUfRXvFbPpCkXgU/V9fRU9CaY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708145483; c=relaxed/simple; bh=Qw6R8pfDRKknVO5RFsZ9GZFCMdOkP05AOnLES1xLe3A=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=Xu8wuxzQFC0dBaEc0MmYuLssLEFlm/30rna3jW0tB+0A5o3sBBOr5+osLzKSRSGdzr6LnEWRd74ptk4DespuWYAltYXEO826cgEW+YRmmIMlfNFd8IjD0bd8jWtImGoYw8hTxWGspx/YAumTmStuPJiChzpyMZhyCS+RiZStHzU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=EWnLD0yh; arc=none smtp.client-ip=209.85.160.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="EWnLD0yh" Received: by mail-oa1-f46.google.com with SMTP id 586e51a60fabf-21e085b9e61so1473034fac.1; Fri, 16 Feb 2024 20:51:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1708145481; x=1708750281; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=MNOBgtxjdzfRlEyGVe+9BRmZDkEvX9p4KtMFsgHAFh4=; b=EWnLD0yh+WYeJd0EVu4O8VUBNSgYyFJdpyICgKGtFwUJmEc24srpnRV1zNoVjDdMUe kiAvjKps3zqbuB9+W24ZcJbaie5F4vo/uwI1phvFAp2ih/d/CQqa9LwKASw4N+l9Zd/K dDpNA3Rf+dYasUydBulTO0ShQV3xu6f5Uiuur0bulJLqW3LsOBdKcq2jeRwzxVwyDhwH AgDHq6+QrtCQeQZT/33Vk3rkGRrAnkOcZ2tM1RtfJwqX1cSh91mYzBYYvfLA8h+J0KLU 4eFHRRlYMsy9neFh+CW+Xh3ulFDWGv++1dkY3I7ptyphD8n74p895TiyESFnw2Zm8ttt sCJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708145481; x=1708750281; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=MNOBgtxjdzfRlEyGVe+9BRmZDkEvX9p4KtMFsgHAFh4=; b=bejGHx0Gd0Gno7E0UhUdGhCyO8PQsQu/Ln/UOWMCWU2aUh7Lgn3/fCiTv45jn4NGUw HHKIJfQjotwGM/yVuDlJnW9e+JkhHad1F+S2tru730H/A1MI+U2FIEppV1GW8WwxGgX+ PA+pfaGiWglXvDVULNpmJaB8OIcksD9RX2y8j3b/9qZ33zzxeoqFf3bOlmC7OckpwWNr S1MV7yz7QkDIo18yqX4jfQZdDQ7ba8Zj8BOwHwJJqmPph+UHdommW6Tw0pNqKp4N99np pEHE03LHDlE2dHyRsAHkh8x8GA8+Cl1Em8hIvHRJdHwmkQUVp0WFgd1V0dmIxMVannat EJyQ== X-Forwarded-Encrypted: i=1; AJvYcCX+/EI1nX1PlTXocXAUQ+/eh7oCr5/ftb9yZ3SFpb7EnbKBfcJ1BaX4+1tx224Iz5n9y2PKBGJVDdlE6mSOpo/GPfWm/IS0qFcXfSDsiSdUjbDnF4FRWM9aCHaT6gh2mB2E3fTuIe0U3fSL X-Gm-Message-State: AOJu0Yy7OvmuuoOCdrlIobZ30rXh8NYU2wx8a4tkPB3jl7zz0vO4GZB6 0RkeGDTNGn3zDW00p9zxbMQT9rFwyAMF5Mn1MyyNfjfUXGKSXsFr X-Google-Smtp-Source: AGHT+IFgDSQJ8AJcEw2iGomSXji4WMGKVF3I6ZMj2AHljsVZsd9dVexoTSkScldRN6Oa7jw2L7sdGw== X-Received: by 2002:a05:6870:56a1:b0:218:51dd:d4a6 with SMTP id p33-20020a05687056a100b0021851ddd4a6mr6971333oao.43.1708145481312; Fri, 16 Feb 2024 20:51:21 -0800 (PST) Received: from barry-desktop.hub ([2407:7000:8942:5500:e82e:22f2:1bdb:989f]) by smtp.gmail.com with ESMTPSA id n14-20020a635c4e000000b005dc2ca5b667sm610703pgm.10.2024.02.16.20.51.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Feb 2024 20:51:20 -0800 (PST) From: Barry Song <21cnbao@gmail.com> To: akpm@linux-foundation.org, davem@davemloft.net, hannes@cmpxchg.org, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-mm@kvack.org, nphamcs@gmail.com, yosryahmed@google.com, zhouchengming@bytedance.com Cc: chriscli@google.com, chrisl@kernel.org, ddstreet@ieee.org, linux-kernel@vger.kernel.org, sjenning@redhat.com, vitaly.wool@konsulko.com, Barry Song Subject: [PATCH v3 0/3] mm/zswap & crypto/compress: remove a couple of memcpy Date: Sat, 17 Feb 2024 17:50:59 +1300 Message-Id: <20240217045102.55339-1-21cnbao@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Barry Song The patchset removes a couple of memcpy in zswap and crypto to improve zswap's performance. Thanks for Chengming Zhou's test and perf data. Quote from Chengming, I just tested these three patches on my server, found improvement in the kernel build testcase on a tmpfs with zswap (lz4 + zsmalloc) enabled. mm-stable 501a06fe8e4c patched real 1m38.028s 1m32.317s user 19m11.482s 18m39.439s sys 19m26.445s 17m5.646s -v3: * collect Acked-by of Yosry, Reviewed-by of Chengming * enhance commit message with respect to Yosry's comment Hi Andrew, Herbert, As zswap is the direct use of this patchset and zswap benefits from this series, It is probably better for this patchset to go through Andrew's mm tree than Herbert's crypto tree if there is no objection from Herbert. Barry Song (3): crypto: introduce acomp_is_sleepable to expose if comp drivers might sleep mm/zswap: remove the memcpy if acomp is not sleepable crypto: scompress: remove memcpy if sg_nents is 1 crypto/acompress.c | 8 ++++++++ crypto/scompress.c | 36 +++++++++++++++++++++++++++++------- include/crypto/acompress.h | 9 +++++++++ mm/zswap.c | 6 ++++-- 4 files changed, 50 insertions(+), 9 deletions(-)