Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760617Ab3DBMtW (ORCPT ); Tue, 2 Apr 2013 08:49:22 -0400 Received: from mail7.hitachi.co.jp ([133.145.228.42]:50412 "EHLO mail7.hitachi.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757921Ab3DBMtV (ORCPT ); Tue, 2 Apr 2013 08:49:21 -0400 Message-ID: <515AD3CC.9040208@hitachi.com> Date: Tue, 02 Apr 2013 21:49:16 +0900 From: Masami Hiramatsu Organization: Hitachi, Ltd., Japan User-Agent: Mozilla/5.0 (Windows NT 5.2; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 MIME-Version: 1.0 To: oskar.andero@sonymobile.com Cc: Joonsoo Kim , "Collett, Toby" , "linux-kernel@vger.kernel.org" , Ananth N Mavinakayanahalli , Anil S Keshavamurthy , "David S. Miller" Subject: Re: Re: [PATCH] kprobe: initialize kprobe_blacklist when it is used firstly References: <1364799356-15768-1-git-send-email-iamjoonsoo.kim@lge.com> <515AB7C6.2030807@hitachi.com> <20130402121643.GA21724@caracas.corpusers.net> In-Reply-To: <20130402121643.GA21724@caracas.corpusers.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1530 Lines: 40 (2013/04/02 21:16), oskar.andero@sonymobile.com wrote: > On 12:49 Tue 02 Apr , Masami Hiramatsu wrote: >> Hi, >> >> (2013/04/01 15:55), Joonsoo Kim wrote: >>> Currently, initializing kprobe_blacklist is done during boot process. >>> It takes 230 ms on our android platform and this is significant amount >>> for our use case. We can disable CONFIG_KPROBES for production kernel, >>> but it is hassle. This kprobe functionality is not commonly used, >>> so we don't need to pay this cost at all times. With this rationale, >>> change code to initialize kprobe_blacklist when it is used firstly. >> >> I saw similar patch from Oskar and Toby, and I decided to wait >> until his blacklist separating work. I'd like to ask Oskar >> how the patch is going first. >> > > I am currently preparing a series of 4 patches including the move of > blacklist initialization (same as Joonsoo's patch) and separation of > architecture specific blackpoints. > The patches are dependent, so I appreciate if you wait a bit. > > You can expect the series at latest tomorrow. Thanks! I'd like to see such general solution :) Thank you, -- Masami HIRAMATSU IT Management Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu.pt@hitachi.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/