Date: Fri, 17 Feb 2012 10:05:42 -0500 From: Alex Goncharov <alex-goncharov@comcast.net> To: freebsd-hackers@FreeBSD.org Subject: 8 to 9: Kernel modularization -- did it change? Message-ID: <E1RyPNW-000If4-5Y@hans3>
next in thread | raw e-mail | index | archive | help
Sticking with the same list as in my first message re the "8 to 9" surprises: | From: Alex Goncharov <alex-goncharov@comcast.net> | To: freebsd-hackers@FreeBSD.org | Date: Thu, 16 Feb 2012 12:34:36 -0500 | Subject: 8 to 9: A longer wait early in the boot... | | About a week ago, I made a jump and upgraded the system's FreeBSD from | version 8 to 9. Trying to figure our audio things, I was shocked to discover that on 9 I couldn't 'kldload snd_hda.ko'; it looks like the HDA support is in the kernel itself now. Compare the two runs, on my 8 and 9 machines, with this script: -- >> ---------------------------------------------------------- #!/bin/sh set -x : ======================================== uname -sr : ======================================== grep hda /boot/loader.conf : ======================================== dmesg | grep -E 'hda|pcm' : ======================================== cat /dev/sndstat : ======================================== for f in /boot/kernel/kernel /boot/kernel/snd_hda.ko; do echo ==== $f; nm $f | grep -c hda; done : ======================================== id : ======================================== kldstat | grep -E 'sound|snd' : ======================================== kldunload snd_hda.ko : ======================================== kldstat | grep hda : ======================================== kldload snd_hda.ko : ======================================== kldstat | grep hda : ======================================== -- << ---------------------------------------------------------- On 8: -- >> ---------------------------------------------------------- * : ======================================== * uname -sr FreeBSD 8.2-STABLE * : ======================================== * grep hda /boot/loader.conf snd_hda_load="YES" * : ======================================== * dmesg * grep -E 'hda|pcm' hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 pcm0: detached pcm1: detached pcm2: detached hdac0: detached hdac0: <Intel 82801G High Definition Audio Controller> mem 0xfea78000-0xfea7bfff irq 16 at device 27.0 on pci0 hdac0: HDA Driver Revision: 20100226_0142 hdac0: [ITHREAD] hdac0: HDA Codec #0: Realtek ALC662 pcm0: <HDA Realtek ALC662 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC662 PCM #1 Analog> at cad 0 nid 1 on hdac0 pcm2: <HDA Realtek ALC662 PCM #2 Digital> at cad 0 nid 1 on hdac0 * : ======================================== * cat /dev/sndstat FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64) Installed devices: pcm0: <HDA Realtek ALC662 PCM #0 Analog> (play/rec) default pcm1: <HDA Realtek ALC662 PCM #1 Analog> (play/rec) pcm2: <HDA Realtek ALC662 PCM #2 Digital> (play) * : ======================================== * echo ==== /boot/kernel/kernel ==== /boot/kernel/kernel * nm /boot/kernel/kernel * grep -c hda 0 * echo ==== /boot/kernel/snd_hda.ko ==== /boot/kernel/snd_hda.ko * nm /boot/kernel/snd_hda.ko * grep -c hda 114 * : ======================================== * id uid=0(root) gid=0(wheel) groups=0(wheel),5(operator) * : ======================================== * kldstat * grep -E 'sound|snd' 3 2 0xffffffff80f09000 75878 sound.ko 11 1 0xffffffff81039000 14580 snd_hda.ko * : ======================================== * kldunload snd_hda.ko * : ======================================== * grep hda * kldstat * : ======================================== * kldload snd_hda.ko * : ======================================== * grep hda * kldstat 11 1 0xffffffff81039000 14580 snd_hda.ko * : ======================================== -- << ---------------------------------------------------------- <== All is the way I am used to: for my audio card, the support is in snd_hda.ko, which I load and unload as I will. The kernel does not contain snd_hda symbols. On 9: -- >> ---------------------------------------------------------- * : ======================================== * uname -sr FreeBSD 9.0-STABLE * : ======================================== * grep hda /boot/loader.conf snd_hda_load="YES" * : ======================================== * dmesg * grep -E 'hda|pcm' hdac0: <NVidia MCP61 High Definition Audio Controller> mem 0xfe028000-0xfe02bfff irq 23 at device 5.0 on pci0 hdac0: HDA Codec #0: Realtek ALC660 pcm0: <HDA Realtek ALC660 PCM #0 Analog> at cad 0 nid 1 on hdac0 pcm1: <HDA Realtek ALC660 PCM #1 Digital> at cad 0 nid 1 on hdac0 interface snd_hda.1 already present in the KLD 'kernel'! interface snd_hda.1 already present in the KLD 'kernel'! * : ======================================== * cat /dev/sndstat FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64) Installed devices: pcm0: <HDA Realtek ALC660 PCM #0 Analog> (play/rec) default pcm1: <HDA Realtek ALC660 PCM #1 Digital> (play) * : ======================================== * echo ==== /boot/kernel/kernel ==== /boot/kernel/kernel * nm /boot/kernel/kernel * grep -c hda 114 * echo ==== /boot/kernel/snd_hda.ko ==== /boot/kernel/snd_hda.ko * nm /boot/kernel/snd_hda.ko * grep -c hda 114 * : ======================================== * id uid=0(root) gid=0(wheel) groups=0(wheel),5(operator) * : ======================================== * kldstat * grep -E 'sound|snd' * : ======================================== * kldunload snd_hda.ko kldunload: can't find file snd_hda.ko * : ======================================== * kldstat * grep hda * : ======================================== * kldload snd_hda.ko kldload: can't load snd_hda.ko: Exec format error * : ======================================== * kldstat * grep hda * : ======================================== -- << ---------------------------------------------------------- <== This is shocking to me: I have the /boot/kernel/snd_hda.ko but I can't load and unload it -- apparently the sound support is in the kernel now. Sorry if this is a trivial question, but did the kernel modularization mechanics and/or configuration change between 8 and 9? (I don't easily see anything applicable in /usr/src/UPDATING). Thanks. -- Alex -- alex-goncharov@comcast.net --
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E1RyPNW-000If4-5Y>