Re: 2.6.18-rc4-mm1

Ben B
2006-08-14T21:14:27Z

Dave Jones <davej@redhat.com> uttered the following thing:
> > > > [ 734.156000] [<e01f2665>] cpufreq_governor_dbs+0x2b5/0x310 [cpufreq_ondemand]
> > >
> > > This makes no sense at all, because in -mm __create_workqueue doesn't
> > > call lock_cpu_hotplug().
> > >
> > > Are you sure this was from a tree with -mm1 applied ?
> >
> > Definitely 2.6.18-rc4-mm1, and I've done a clean rebuild + removal of
> > all modules under /lib/modules beforehand.
>
> It's a real mystery. Andrew ?

This seems to be specific to the ondemand governor - I just tried with
conservative, and alternating it with performance, with no problems, but
as soon as I loaded ondemand, the message appeared. It seems to fire off
the message as soon as I either set the governor to ondemand, or revert
it from ondemand to something else. But going from, eg performance to
conservative, wont give the message, even with ondemand loaded.

I wonder if this might also be related to my 1.83GHz cpu only being set
to a maximum of 1.33GHz via cpufreq? cpuinfo_max_freq is correct, but
scaling_max_freq is wrong. Though doing "cat cpuinfo_max_freq >
scaling_max_freq" has fixed it up, it should be correct already.

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 14
model name : Genuine Intel(R) CPU T2400 @ 1.83GHz
stepping : 8
cpu MHz : 1000.000
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov
pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc pni
monitor
vmx est tm2 xtpr
bogomips : 3667.27

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 14
model name : Genuine Intel(R) CPU T2400 @ 1.83GHz
stepping : 8
cpu MHz : 1333.000
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov
pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc pni
monitor
vmx est tm2 xtpr
bogomips : 3657.79

Ben