From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751062AbdGLRig (ORCPT ); Wed, 12 Jul 2017 13:38:36 -0400 Received: from mx3.molgen.mpg.de ([141.14.17.11]:51001 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750869AbdGLRie (ORCPT ); Wed, 12 Jul 2017 13:38:34 -0400 Subject: Re: Decreasing time for `rsa_init` To: =?UTF-8?Q?Stephan_M=c3=bcller?= Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org References: <4ec5a3f5-9605-cdcd-23cf-1df7b3af211c@molgen.mpg.de> <3649766.4rHtxdK8Pi@tauon.chronox.de> From: Paul Menzel Message-ID: <8d89fefa-b27d-ba32-e7b2-75312549ee90@molgen.mpg.de> Date: Wed, 12 Jul 2017 19:38:32 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 MIME-Version: 1.0 In-Reply-To: <3649766.4rHtxdK8Pi@tauon.chronox.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Stephan, Thank you for the quick response. On 07/12/17 19:28, Stephan Müller wrote: > Am Mittwoch, 12. Juli 2017, 12:59:58 CEST schrieb Paul Menzel: >> Building CRYPTO_RSA not as module, but into the Linux kernel, >> `rsa_init()` takes 130 ms on an ASRock E350M1. >> >> (Timings are shown by adding `initcall_debug` to Linux command line [1]. >> The times are visualized by `analyze_boot.py` from pm-graph [2] or >> `systemd-bootchart`.) >> >> This is quite a lot of time compared to other modules, and I wonder if >> there are ways to decrease that time other than building it as a module, >> and not signing modules? > > Is the testmgr compiled? If yes, the self test may take that time. It looks like it is, as the tests are not disabled. ``` $ grep MANAGER_DISABLE_TESTS .config # CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set ``` I’ll try an image without the tests, and will report back. Kind regards, Paul >> [1] http://elinux.org/Initcall_Debug >> [2] https://github.com/01org/pm-graph