Re: [uml-devel] sysconf(_SC_NPROCESSORS_CONF) returning zero

2008-08-04 Thread Ingo van Lil
Jeff Dike schrieb: >> Hmmm... so I have cpu0 similar to yours. What version >> of UML and libc do you have? > > UML 2.6.26 and an older libc: > > % ls -l /lib/libc.so.6 > lrwxrwxrwx 1 root root 11 Jun 2 2007 /lib/libc.so.6 -> libc-2.5.so > > Looking through libc at > > http://www.google.com/

Re: [uml-devel] sysconf(_SC_NPROCESSORS_CONF) returning zero

2008-08-04 Thread Stanislav Meduna
Jeff Dike wrote: > I see it counting cpu lines in /proc/stat, which is what I'm > seeing. It will also look at /proc/cpuinfo. Can you strace your > version and see if it's looking there at all? No.. looks like they changed the method: open("/sys/devices/system/cpu", O_RDONLY|O_NONBLOCK|O_LARGE

Re: [uml-devel] sysconf(_SC_NPROCESSORS_CONF) returning zero

2008-08-04 Thread Jeff Dike
On Mon, Aug 04, 2008 at 10:59:36PM +0200, Stanislav Meduna wrote: > Hmmm... so I have cpu0 similar to yours. What version > of UML and libc do you have? UML 2.6.26 and an older libc: % ls -l /lib/libc.so.6 lrwxrwxrwx 1 root root 11 Jun 2 2007 /lib/libc.so.6 -> libc-2.5.so Looking through libc

Re: [uml-devel] sysconf(_SC_NPROCESSORS_CONF) returning zero

2008-08-04 Thread Stanislav Meduna
Jeff Dike wrote: > sysconf seems to be looking at /proc/stat, which looks like this here: > > cpu 80 0 157 12771 984 0 0 0 0 > cpu0 80 0 157 12771 984 0 0 0 0 > intr 15259 12519 0 75 0 2590 0 0 0 0 0 0 74 0 0 1 > ctxt 8081 > btime 1217881784 > processes 1144 >

Re: [uml-devel] sysconf(_SC_NPROCESSORS_CONF) returning zero

2008-08-04 Thread Jeff Dike
On Mon, Aug 04, 2008 at 03:58:04PM +0200, Stanislav Meduna wrote: > Hi, > > the following program > > === > #include > #include > > main() > { >printf("Number of processors: %d\n", sysconf(_SC_NPROCESSORS_CONF)); > } > === > > produces > >Number of processors: 0 > > on my system. W

Re: [uml-devel] ALSA and host audio relay in UML

2008-08-04 Thread Jeff Dike
On Mon, Jul 28, 2008 at 04:31:06PM +0200, Luca Saiu wrote: > That feature works very well, but as far as I can understand from the > source and from my tests, it's limited to OSS. The host audio driver just uses the host's /dev/sound/dsp and /dev/sound/mixer. Are these OSS-specific? If so, and

Re: [uml-devel] 2.6.25 uml kernel crashes when it calls down() on a semaphore with zero counter

2008-08-04 Thread Jeff Dike
On Sat, Aug 02, 2008 at 02:54:08PM +0900, Mattia Dongili wrote: > FWIW I can't reproduce this on 2.6.26. Thanks for letting me know. Too bad it's still a mystery though. Jeff -- Work email - jdike at linux dot intel dot com ---

Re: [uml-devel] /dev/random problems _not_ solved in 2.6.26

2008-08-04 Thread Jeff Dike
On Mon, Aug 04, 2008 at 02:40:01PM +0200, Stanislav Meduna wrote: > this is just to let you know that the /dev/random problems > are still not solved in the 2.6.26 version. A small dictionary > attack on sshd (in my case 260 tries over 12 minutes) > are able to produce > > auth.log.0:Aug 3 05:30:

[uml-devel] sysconf(_SC_NPROCESSORS_CONF) returning zero

2008-08-04 Thread Stanislav Meduna
Hi, the following program === #include #include main() { printf("Number of processors: %d\n", sysconf(_SC_NPROCESSORS_CONF)); } === produces Number of processors: 0 on my system. # uname -a Linux dirk 2.6.26 #1 Wed Jul 30 10:56:10 CEST 2008 i686 GNU/Linux # cat /proc/cpuinfo proces

[uml-devel] /dev/random problems _not_ solved in 2.6.26

2008-08-04 Thread Stanislav Meduna
Hi, this is just to let you know that the /dev/random problems are still not solved in the 2.6.26 version. A small dictionary attack on sshd (in my case 260 tries over 12 minutes) are able to produce auth.log.0:Aug 3 05:30:35 dirk sshd[1825]: fatal: Couldn't obtain random bytes (error 60438947