On Mon, 2003-03-10 at 00:33, Valdis.Kletnieks@vt.edu wrote:
> > +config LOCKMETER
> > + bool "Kernel lock metering"
> > + depends on SMP
>
> Should that be 'depends on SMP || PREEMPT'? I remember the original 2.4
> pre-empt patches had one to deal with instrumenting/breaking locks. Not sure
> if that logic still applies...
No, it depends on SMP alone.
To do the metering, it needs the actual locks compiled into the kernel.
I believe what you are thinking of is the preempt-stats patch, which
measures periods of non-preemptibility. Same idea but different.
Robert Love
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This archive was generated by hypermail 2b29 : Sat Mar 15 2003 - 22:00:20 EST