From mboxrd@z Thu Jan 1 00:00:00 1970 From: Li Zefan Subject: Re: [PREEMPT RT] SLUB and split softirq lock for v3.2-rt Date: Tue, 19 Feb 2013 09:56:17 +0800 Message-ID: <5122DBC1.6010507@huawei.com> References: <1360771932-27150-1-git-send-email-bigeasy@linutronix.de> <1360776274.23152.7.camel@gandalf.local.home> <5122DB72.7030100@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: 7bit Cc: Sebastian Andrzej Siewior , , , Carsten Emde To: Steven Rostedt Return-path: In-Reply-To: <5122DB72.7030100@huawei.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On 2013/2/19 9:54, Li Zefan wrote: > On 2013/2/14 1:24, Steven Rostedt wrote: >> On Wed, 2013-02-13 at 17:11 +0100, Sebastian Andrzej Siewior wrote: >>> 3.2-rt is a long term supported kernel, which lacks two RT features >>> from 3.6: SLUB support and the split softirq lock implementation. >>> >>> SLUB has a way better performance than SLAB on RT and the split >>> softirq lock implementation is necessary especially for realtime >>> networking applications. >>> >>> The following patch series backports these features to 3.2-rt. >>> >>> Steven, could you please apply these patches to a separate >>> 3.2-rt-features branch? >> >> Is it possible to separate these two features into two different patch >> sets. I would like to apply the softirq changes first, and then apply >> the slub changes. >> >> Although it looks as though the first half is softirq only 1-8, and the >> second half is slub related 9-16. If that's the case, I'll just pull in >> 1-8 first, play with them, and then do 9-16. >> > > We've also ported these two features to 3.4-rt. Do you want us to post > them? > Oh ignore me. Just saw the patchset for 3.4-rt.