From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1ZwDsZ-0006QN-Tp for user-mode-linux-devel@lists.sourceforge.net; Tue, 10 Nov 2015 18:42:51 +0000 Received: from ivanoab4.miniserver.com ([78.31.104.92]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:AES128-SHA:128) (Exim 4.76) id 1ZwDsY-0004xr-Kk for user-mode-linux-devel@lists.sourceforge.net; Tue, 10 Nov 2015 18:42:51 +0000 Received: from tun252.maui-covenant.sigsegv.cx ([192.168.17.6] helo=smaug.kot-begemot.co.uk) by ivanoab4.miniserver.com with esmtps (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1ZwDsR-0006cB-2h for user-mode-linux-devel@lists.sourceforge.net; Tue, 10 Nov 2015 18:42:43 +0000 Received: from [70.35.39.246] (helo=[10.11.13.34]) by smaug.kot-begemot.co.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84) (envelope-from ) id 1ZwDsQ-0003Uh-HH for user-mode-linux-devel@lists.sourceforge.net; Tue, 10 Nov 2015 18:42:42 +0000 Message-ID: <56423A89.2040206@kot-begemot.co.uk> Date: Tue, 10 Nov 2015 18:42:17 +0000 From: Anton Ivanov MIME-Version: 1.0 References: <1447079597-17816-1-git-send-email-aivanov@brocade.com> <5640B5B5.7050907@kot-begemot.co.uk> In-Reply-To: <5640B5B5.7050907@kot-begemot.co.uk> List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net Subject: Re: [uml-devel] [PATCH v2] EPOLL Interrupt Controller V2.0 To: user-mode-linux-devel@lists.sourceforge.net Thomas Mayer found a couple of issues which crept up when porting v1 to the newer kernels. It also crashes with his config - I am analyzing the differences between that and mine to find the culrpit. Once I have fixed both I will resubmit v3. So for now this is just "subject for discussion", do not use yet. A On 09/11/15 15:03, Anton Ivanov wrote: > It throws a couple of harmless "epoll del fd" warnings on reboot which > result the fact that disable_fd/enable_fd are not removed in the > terminal/line code. > > These are harmless and will go away once the term/line code gets > support for real write IRQs in addition to read at some point in the > future. > > I have fixed the file descriptor leak in the reboot case. > > A. > > On 09/11/15 14:33, Anton Ivanov wrote: >> Epoll based interrupt controller. >> >> IMPROVES: IO loop performance - no per fd lookups, allowing for >> 15% IO speedup in minimal config going to 100s of % with many >> devices - a N^N lookup is now replaced by a log(N) >> >> ADDS: True Write IRQ functionality >> >> OBSOLETES: The need to call reactivate_fd() in any driver which >> has only read IRQ semantics. Write IRQs work, but will need to >> be updated to use this fully. >> >> Potentially (with a change in API) will allow both edge and level >> IRQ semantics. >> >> Pre-requisite for using packet mmap and multipacket read/write >> which do not get along with poll() very well. >> >> Signed-off-by: Anton Ivanov > ------------------------------------------------------------------------------ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel