From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Oeser Subject: Re: [PATCH 4/5] x86: Add config variables for SMP_MAX Date: Fri, 18 Jan 2008 21:04:21 +0100 References: <20080118183011.354965000@sgi.com> <20080118183011.917801000@sgi.com> In-Reply-To: <20080118183011.917801000@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801182104.22486.ioe-lkml@rameria.de> Sender: owner-linux-mm@kvack.org Return-Path: To: travis@sgi.com Cc: Andrew Morton , Andi Kleen , mingo@elte.hu, Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: Hi Mike, On Friday 18 January 2008, travis@sgi.com wrote: > +config THREAD_ORDER > + int "Kernel stack size (in page order)" > + range 1 3 > + depends on X86_64_SMP > + default "3" if X86_SMP_MAX > + default "1" > + help > + Increases kernel stack size. > + Could you please elaborate, why this is needed and put more info about this requirement into this patch description? People worked hard to push data allocation from stack to heap to make THREAD_ORDER of 0 and 1 possible. So why increase it again and why does this help scalability? Many thanks and Best Regards Ingo Oeser, puzzled a bit :-) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org