From owner-cvs-src@FreeBSD.ORG Thu May 31 18:43:34 2007 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 3447316A46C; Thu, 31 May 2007 18:43:34 +0000 (UTC) (envelope-from ariff@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [69.147.83.41]) by mx1.freebsd.org (Postfix) with ESMTP id 24EDE13C45A; Thu, 31 May 2007 18:43:34 +0000 (UTC) (envelope-from ariff@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.13.8/8.13.8) with ESMTP id l4VIhYBM065771; Thu, 31 May 2007 18:43:34 GMT (envelope-from ariff@repoman.freebsd.org) Received: (from ariff@localhost) by repoman.freebsd.org (8.13.8/8.13.8/Submit) id l4VIhXUO065757; Thu, 31 May 2007 18:43:33 GMT (envelope-from ariff) Message-Id: <200705311843.l4VIhXUO065757@repoman.freebsd.org> From: Ariff Abdullah Date: Thu, 31 May 2007 18:43:33 +0000 (UTC) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org X-FreeBSD-CVS-Branch: HEAD Cc: Subject: cvs commit: src/sys/conf files src/sys/dev/sound/pcm buffer.c channel.c channel.h dsp.c dsp.h feeder.c mixer.c sndstat.c sound.c sound.h vchan.c vchan.h src/sys/dev/sound/usb uaudio.c src/sys/modules/sound/sound Makefile X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 May 2007 18:43:34 -0000 ariff 2007-05-31 18:43:33 UTC FreeBSD src repository Modified files: sys/conf files sys/dev/sound/pcm buffer.c channel.c channel.h dsp.c dsp.h feeder.c mixer.c sndstat.c sound.c sound.h vchan.c vchan.h sys/dev/sound/usb uaudio.c sys/modules/sound/sound Makefile Log: Last major commit and updates for RELENG_7: - Rework the entire pcm_channel structure: * Remove rarely used link placeholder, instead, make each pcm_channel as head/link of each own/each other. Unlock - Lock sequence due to sleep malloc has been reduced. * Implement "busy" queue which will contain list of busy/active channels. This greatly reduce locking contention for example while servicing interrupt for hardware with many channels or when virtual channels reach its 256 peak channels. - So I heard you like v chan ... O RLY? Welcome to Virtual **Record** Channels (vrec, rec vchans, vchans for recording, Rec-Chan, you decide), the ultimate solutions for your nagging O_RDWR full-duplex wannabe (note: flash plugins) monopolizing single record channel causing EBUSY. Vrec works exactly like Vchans (or, should I rename it to "Vplay" :) , except that it operates on the opposite direction (recording). Up to 256 vrecs (like vchans) are possible. Notes: * Relocate dev.pcm.%d.{vchans,vchanformat,vchanrate} to each of its respective node/direction: dev.pcm.%d.play.* for "play" (cdev = dsp%d.vp%d) dev.pcm.%d.rec.* for "record" (cdev = dsp%d.vr%d) * Don't expect that it will magically give you ability to split "recording source" (eg: 1 channel for cdrom, 1 channel for mic, etc). Just admit that you only have a *single* recording source / channel. Please bug your hardware vendor instead :) - Bump maxautovchans from 4 to 16. For a full-fledged multimedia desktop/workstation with too many soundservers installed (esound, artsd, jackd, pulse/polypaudio, ding-dong pling plong mudkip fuh fuh, etc), 4 seems inadequate. There will be no memory penalty here, since virtual channels are allocate only by demand. - Nuke/Rework the entire statically created cdev entries. Everything is clonable through snd own clone manager which designed to withstand many kind of abusive devfs droids such as: * while : ; do /bin/test -e /dev/dsp ; done * jot 16777216 0 | while read x ; do ls /dev/dsp0.$x ; done * hundreds (could be thousands) concurrent threads/process opening "/dev/dsp" (previously, this might result EBUSY even with just 3 contesting threads/procs). o Reusable clone objects (instead of creating new one like there's no tomorrow) after certain expiration deadline. The clone allocator will decide whether to reuse, share, or creating new clone. o Automatic garbage collector. - Dynamic unit magic allocator. Maximum attached soundcards can be tuned using tunable "hw.snd.maxunit" (Default to 512). Minimum is 16, and maximum is 2048. - ..other fixes, mostly related to concurrency issues. joel@ will do the manpage updates on sound(4). Have fun. Revision Changes Path 1.1212 +2 -0 src/sys/conf/files 1.35 +3 -3 src/sys/dev/sound/pcm/buffer.c 1.118 +108 -35 src/sys/dev/sound/pcm/channel.c 1.35 +85 -10 src/sys/dev/sound/pcm/channel.h 1.103 +459 -187 src/sys/dev/sound/pcm/dsp.c 1.12 +1 -0 src/sys/dev/sound/pcm/dsp.h 1.41 +5 -3 src/sys/dev/sound/pcm/feeder.c 1.59 +42 -25 src/sys/dev/sound/pcm/mixer.c 1.26 +79 -33 src/sys/dev/sound/pcm/sndstat.c 1.113 +596 -422 src/sys/dev/sound/pcm/sound.c 1.77 +45 -39 src/sys/dev/sound/pcm/sound.h 1.32 +362 -268 src/sys/dev/sound/pcm/vchan.c 1.5 +20 -1 src/sys/dev/sound/pcm/vchan.h 1.29 +5 -18 src/sys/dev/sound/usb/uaudio.c 1.21 +3 -2 src/sys/modules/sound/sound/Makefile