Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966512AbXEVStT (ORCPT ); Tue, 22 May 2007 14:49:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757571AbXEVStM (ORCPT ); Tue, 22 May 2007 14:49:12 -0400 Received: from mx1.redhat.com ([66.187.233.31]:53062 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756441AbXEVStM (ORCPT ); Tue, 22 May 2007 14:49:12 -0400 Date: Tue, 22 May 2007 14:48:59 -0400 From: Dave Jones To: Maxim Uvarov Cc: LKML , linuxppc-dev@ozlabs.org Subject: Re: [PATCH] Performance Stats: Kernel patch Message-ID: <20070522184859.GD12157@redhat.com> Mail-Followup-To: Dave Jones , Maxim Uvarov , LKML , linuxppc-dev@ozlabs.org References: <20070522171950.23728.95735.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070522171950.23728.95735.stgit@localhost.localdomain> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1078 Lines: 30 On Tue, May 22, 2007 at 05:19:52PM +0000, Maxim Uvarov wrote: > diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h > index 4b187bb..bccfd6a 100644 > --- a/include/asm-i386/thread_info.h > +++ b/include/asm-i386/thread_info.h > @@ -33,6 +33,7 @@ struct thread_info { > int preempt_count; /* 0 => preemptable, <0 => BUG */ > > > + unsigned long syscall_count; /* Syscall counter */ > mm_segment_t addr_limit; /* thread address space: > 0-0xBFFFFFFF for user-thead > 0-0xFFFFFFFF for kernel-thread It seems a bit unkind to bloat up the thread_info for every process of every user when the common case will be people that don't care about this feature at all. Especially when the same information could be got from ptrace. Dave -- http://www.codemonkey.org.uk - 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/