Compilation with high-res turned off:
add #define do_gettimeoffset() do_slow_gettimeoffset() at line 283 in
arch/i386/kernel/time.c
their was a
"static unsigned long (*do_gettimeoffset)(void) = do_slow_gettimeoffset;"
instead of the #define found for other configuration
at line 875
#ifndef do_gettimeoffset
do_gettimeoffset = do_fast_gettimeoffset;
#endif
would be compiled even when the CONFIG_X86_TSC is off.
> -----Original Message-----
> From: Isabelle, Francois [mailto:[email protected]]
> Sent: 3 f?vrier, 2003 10:07
> To: Isabelle, Francois;
> [email protected]
> Cc: [email protected]
> Subject: RE: Errata : Unexpected lock during "Calibrating delay loop"
> and failure to co mpile without "HighRes"
>
>
> Please Read:
> to build withOUT High-Res, the kernel won't build
>
> > -----Original Message-----
> > From: Isabelle, Francois [mailto:[email protected]]
> > Sent: 3 f?vrier, 2003 09:47
> > To: [email protected]
> > Cc: [email protected]
> > Subject: Unexpected lock during "Calibrating delay loop" and
> > failure to
> > co mpile without "HighRes"
> >
> >
> > Hi,
> > I'm trying to integrate some tools on a 486-powered cpu
> > board, I don't
> > really need "High Resolution Timers", but one of the tools
> > would really make
> > good use of the POSIX API you implemented. I've patch kernel
> > 2.4.20 with the
> > latest 2.4.20-1.0 hrtimers.
> >
> > Here comes the trouble.
> >
> > - Trying to build with High-Res, the kernel won't build
> >
> > time.c: In function `time_init':
> > time.c:873: `do_fast_gettimeoffset' undeclared (first use in
> > this function)
> > time.c:873: (Each undeclared identifier is reported only once
> > time.c:873: for each function it appears in.)
> > make[1]: *** [time.o] Error 1
> > make[1]: Leaving directory `/usr/src/linux-2.4.20/arch/i386/kernel'
> > make: *** [_dir_arch/i386/kernel] Error 2
> >
> > seems like it should try to link "do_slow_gettimeoffset"
> > instead since 486
> > does not handle TSC, (I'll have to check that..)
> >
> >
> > - Trying to boot with "PIT-based" high-res support, the
> > kernel lock during
> > calibration "Calibrating delay loop".
> > Same occurs with IOAPIC and TSC ...
> >
> >
> > If you have any hint, I'll be glad to hear it.
> >
> > Thanks
> >
> >
> > Frank
> >
> >
> >
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--- linux-2.4.20-hrt/arch/i386/kernel/time.c~ 2003-01-08 22:51:06.000000000 -0800
+++ linux/arch/i386/kernel/time.c 2003-02-03 14:22:31.000000000 -0800
@@ -869,7 +869,7 @@
* and just enable this for the next intel chips ?
*/
x86_udelay_tsc = 1;
-#ifndef do_gettimeoffset
+#if ! defined( do_gettimeoffset) && defined(CONFIG_X86_TSC)
do_gettimeoffset = do_fast_gettimeoffset;
#endif
/*