Re: 2.6.12-rc2-mm1 - printk timing broken

Damir Perisa
2005-04-07T17:01:10Z

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Hi Andrew,

Le Tuesday 05 April 2005 09:45, Andrew Morton a écrit :
> Brice Goglin <Brice.Goglin@ens-lyon.org> wrote:
> > Andrew Morton a écrit :
> > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.
> > >12-rc2/2.6.12-rc2-mm1/
> >
> > Hi Andrew,
> >
> > printk timing seems broken.
> > It always shows [ 0.000000] on my Compaq Evo N600c.
>
> What sort of CPU does that thing have? Please share the /proc/cpuinfo
> output.

i can reproduce this "[ 0.000000]"-bug with a Thinkpad A31p with a P4M:

cpu family : 15
model : 2
model name : Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz
stepping : 7
cpu MHz : 1998.447
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid

> Does reverting
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc
>2/2.6.12-rc2-mm1/broken-out/sched-x86-sched_clock-to-use-tsc-on-config_h
>pet-or-config_numa-systems.patch fix it?

for me too - yes

strange, because the cpu supports tsc as the flags indicate in the cpuinfo
i posted. hopefully this mystery is no more, soon ;-)

best regards,
Damir

--
Don't confuse things that need action with those that take care of
themselves.

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