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Old 02-22-2005, 05:45 PM   #1
Registered: Dec 2003
Distribution: Slackware, Alpine Linux, Ubuntu, Debian
Posts: 219

Rep: Reputation: 35
Kernel compiling problem, connected with jiffies.h


I'am compiling linux kernel 2.6.10 with 2.6.10-ac12 patch. I've configured it and so on. As i'm trying to compile it with make bzImage command, i get this error message:

  CHK     include/linux/version.h
  CC      arch/i386/kernel/asm-offsets.s
In file included from include/linux/sched.h:12,
                 from arch/i386/kernel/asm-offsets.c:7:
include/linux/jiffies.h:42:3: #error You lose.
In file included from include/linux/sched.h:12,
                 from arch/i386/kernel/asm-offsets.c:7:
include/linux/jiffies.h: In function `timespec_to_jiffies':
include/linux/jiffies.h:305: error: `SHIFT_HZ' undeclared (first use in this function)
include/linux/jiffies.h:305: error: (Each undeclared identifier is reported only once
include/linux/jiffies.h:305: error: for each function it appears in.)
include/linux/jiffies.h: In function `timeval_to_jiffies':
include/linux/jiffies.h:344: error: `SHIFT_HZ' undeclared (first use in this function)
include/linux/jiffies.h: In function `jiffies_to_clock_t':
include/linux/jiffies.h:367: warning: division by zero
make[1]: *** [arch/i386/kernel/asm-offsets.s] Error 1
make: *** [arch/i386/kernel/asm-offsets.s] Error 2
Andy ideas what's wrong and how to solve the problem?

I'm compiling the kernel with this patch, because i need ITE IT8212 raid driver support.
Old 02-22-2005, 06:17 PM   #2
Registered: Dec 2003
Distribution: Slackware, Alpine Linux, Ubuntu, Debian
Posts: 219

Original Poster
Rep: Reputation: 35
I tried a little bit of this an a little bit of that. I found out, that my problem was in undefined HZ, which had to be defined in /usr/src/linux/include/linux/asm/param.h. I took a look at the code there and changed the line with define HZ (i commented previous value in and replaced it with 100):

#ifdef __KERNEL__
# define HZ		100 /*(CONFIG_X86_HZ)*/
# define USER_HZ	100		/* .. some user interfaces are in "ticks" */
# define CLOCKS_PER_SEC		(USER_HZ)	/* like times() */
Does somebody know which value does CONFIG_X86_HZ take here?
Old 03-01-2006, 05:30 PM   #3
Registered: Jul 2002
Location: Florida
Distribution: Centos, Slackware
Posts: 260

Rep: Reputation: 30
When configuring your kernel, there is 'Timer frequency' option
under 'Processor type and features' where you can select
100, 250, or 1000, or as you discovered, you can edit param.h
by hand. For x86 it was 100 by default in 2.2 and 2.4 kernels,
but since recently it has been easier to change. I'm looking
at the 2.6.15.x, so it may not be exactly the same in your 2.6.10.


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