From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794281967; b=E8maSU6PDf3Yl6eoFquj8HzE3vsTw7ostAgpcDGZfDMgNvD5OAkosbgwJJKhENviPNam vU8zj6SFmj6yWZ2yV2S1q0EYnVSxrbJBt/9Pr40re5KlRQbZcegS5CKIeTbZfh4sY47he aCxNUklokJswpRir7ur3v3mEt3CnQJLtcE6B4n9plgwIQVV/Cu/CaHQ8c6PUvbZbLzvBk bAD60h29f+BnvHuloWwYW/yJ/N/RZ0UZf1mRYsnQkat+/KI8sn4El3FXGbphDMTUwIHJz EA1Ixtq8W1uITGtp1HB98mxSaF3YEFwFfuNKCMsxmtL/1BJBUnUsOtYzFzmQh3F0DvA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794281967; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-Id: In-Reply-To:References:X-Mailer:Mime-Version:Content-Type: Content-Transfer-Encoding; bh=Y+1lY4bhPUECLFQkJKPsCV8cDSPAAPLwsf+L7+iY1Dw=; b=qgEAkFDgdnai2RE03SGrFaKzzXNqfZiJPArp3msrfgqrYETMI5jytkWSP/33dgFPpM5h ZdlG3spoaPkcxlKSq8d+KZLJtixO6KxNJpl5W68IBYVT9yZw2iIerYQbOp5ZGjZqLS2T2 59mLwK1Yp0jqw7Z0sd9MOoFGQo4zM/f9sx5Wpgi4m0QZL4nSAgbUS45GmQGVegV753045 8JitJtjcyoot7b4awIZ1DLcljS0tx9CGocuUrYBee8kjzgTUaTBBDPwSpLKu/MjVWQpnI 5GHJitB328lPNBknn8pESmEg7sITMNrlIbmUgJlWt1cxPffzWRhbvKWDzPchTFsShOA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linux-foundation.org header.i=@linux-foundation.org header.a=rsa-sha256 header.s=korg header.b=EDpO4EKA; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B4A0B606AA0A; Tue, 10 Nov 2026 03:39:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux-foundation.org header.i=@linux-foundation.org header.a=rsa-sha256 header.s=korg header.b=EDpO4EKA Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED3FF1F0089F; Tue, 10 Nov 2026 03:39:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1794281966; bh=Y+1lY4bhPUECLFQkJKPsCV8cDSPAAPLwsf+L7+iY1Dw=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=EDpO4EKAVVq1Z4V+/KSCvRx6YnX8ClzkdTVPEhf9aQNgEoWeMI/kAO0qulljQUGaU 1k+vPrnc3EGFUM0BbzFRBiDnxT5wAVDgu5rsixPh/094bBFwj8dHJAsax8qyz6gLVH AepvD9Q6EhZUeRrvMmyF2c+v+QnW5UC97J9ApTMg= Date: Mon, 9 Nov 2026 19:39:25 -0800 From: Andrew Morton To: Matteo Croce Cc: Brendan Higgins , David Gow , David Laight , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , linux-hardening@vger.kernel.org Subject: Re: [PATCH v7] kunit: memcpy: Add benchmark Message-Id: <20261109193925.8a127f2d0afd5429f1f551f1@linux-foundation.org> In-Reply-To: <20261110021622.122490-1-technoboy85@gmail.com> References: <20261110021622.122490-1-technoboy85@gmail.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 10 Nov 2026 03:16:22 +0100 Matteo Croce wrote: > Add optional benchmarks for memcpy() and memmove(), enabled with > CONFIG_MEMCPY_KUNIT_BENCHMARK. hm, sorry, I must ask "why". Nowadays optimizing memcpy() is a super-specialized thing undertaken by the bravest architecture specialists who are unlikely to rely upon a generic kunit test for the purpose!