Re: Re: [PATCH] UML + High-Res-Timers on 2.4.25 kernel

From: Serge Goodenko
Date: Thu Oct 13 2005 - 02:57:39 EST

> Serge Goodenko wrote:
> > Hello!
> >
> > I am trying to compile 2.4.25 UML kernel together with High Resolution Timers patch and it fails to compile saying the following during linking:
> >
> > gcc -Wl,-T,arch/um/link.ld -static -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc \
> > -o linux arch/um/main.o vmlinux.o -L/usr/lib -lutil
> > vmlinux.o(.text+0x2688): In function `schedule_timeout':
> > /usr/src/linux-2.4.25/kernel/sched.c:443: undefined reference to `jiffies'
> > vmlinux.o(.text+0x26cd):/usr/src/linux-2.4.25/kernel/sched.c:454: undefined reference to `jiffies'
> > vmlinux.o(.text+0x27a4): In function `schedule':
> > /usr/src/linux-2.4.25/include/linux/sched.h:929: undefined reference to `jiffies'
> > vmlinux.o(.text+0x489e): In function `do_fork':
> > /usr/src/linux-2.4.25/kernel/fork.c:740: undefined reference to `jiffies'
> > vmlinux.o(.text+0xabd5): In function `do_getitimer':
> > /usr/src/linux-2.4.25/kernel/itimer.c:55: undefined reference to `jiffies'
> > vmlinux.o(.text+0xacd3):/usr/src/linux-2.4.25/kernel/itimer.c:103: more undefined references to `jiffies' follow
> > collect2: ld returned 1 exit status
> > make: *** [linux] Error 1
> >
> > is there any solution to this problem?
> > or HRT patch is not supposed to work under UML at all?
> >
> You might do better on the HRT list (cc'ed).
> I don't know what UML needs. I would have thought that jiffies would be defined... especially for
> things like do_fork. Which patch are you using?

Well, as far as I understood recently HRT patch is not what I exactly need. It provides just API for using in user space applications and I need to use High-Resolution timer in kernel (particulary in TCP/IP stack)...
therefore my problem now is to find suitable hi-res timer patch for use in 2.4 kernel...
and I would be pleased if you could recommend me something...


Serge, MIPT,

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