Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757912Ab0KANlM (ORCPT ); Mon, 1 Nov 2010 09:41:12 -0400 Received: from mail-yx0-f174.google.com ([209.85.213.174]:45326 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757745Ab0KANlH (ORCPT ); Mon, 1 Nov 2010 09:41:07 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=urx5Jc5hi+nUMkfi49wX1XURvI4nN1fWmxMs4SjUFzjD5VCukwHOWzfQDblkLEsvJm dnqkbL2LqSFVjPuJOvLkqQKZlDoiGndsplCGvdlnvyN8al0ywsVuV2N6crzkbNSPq3E4 y0PSNqW027Vl5SX2OF9o02mS89qum3I+47WVA= MIME-Version: 1.0 In-Reply-To: <20101101130842.GA24605@Krystal> References: <20101030214704.GA20005@Krystal> <4CCEB723.2010005@kernel.dk> <20101101130842.GA24605@Krystal> Date: Mon, 1 Nov 2010 15:41:06 +0200 X-Google-Sender-Auth: g1pD8ZlgDAcgUOO3XFtkzpwlTYc Message-ID: Subject: Re: [PATCH] Optimize relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset From: Pekka Enberg To: Mathieu Desnoyers Cc: Jens Axboe , Jesper Juhl , linux-kernel@vger.kernel.org, Andrew Morton , Tom Zanussi , Karim Yaghmour , Paul Mundt , Steven Rostedt Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1174 Lines: 25 * Jens Axboe (axboe@kernel.dk) wrote: >> On 2010-10-30 17:47, Mathieu Desnoyers wrote: >> > BLK_DEV_IO_TRACE seems to still select RELAY. Has it completed its >> > transition to either Ftrace or Perf ? Depending on Jens, moving blktrace >> > relay dependency to the Generic Ring Buffer Library might be a good >> > option to consider. >> >> The blktrace user bits is still (by far) the most wide spread way that >> blktrace is used in the field, and those still rely on relayfs. So no, >> we can't kill it now. On Mon, Nov 1, 2010 at 3:08 PM, Mathieu Desnoyers wrote: > What I am proposing is that the Generic Ring Buffer Library could > replace relayfs without changing any of the interfaces blktrace exposes > to user-space. Indeed, I would not remove relayfs unless there was a > replacement. We don't in general NAK cleanups because of future features or removals that may or may not happen. -- 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/