b7cffc1f29
I noticed this because alpha was broken due to the recent commit commit
bdc807871d ("avoid overflows in
kernel/time.c"). Most arches do something like this in their
asm/param.h:
#ifdef __KERNEL__
# define HZ CONFIG_HZ
#else
# define HZ 100
#endif
A few arches though (namely alpha/h8300/um/v850/xtensa) either do no set
HZ at all for !__KERNEL__, or they set it wrongly. This should bring all
arches in line by setting up HZ for userspace.
Without this currently perl 5.10 doesn't build on alpha:
perl.c: In function 'perl_construct':
perl.c:388: error: 'CONFIG_HZ' undeclared (first use in this function)
-> http://buildd.debian.org/fetch.cgi?pkg=perl;ver=5.10.0-10;arch=alpha;stamp=1210252894
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ HZ on alpha is 1024 for historical reasons. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
27 lines
615 B
C
27 lines
615 B
C
#ifndef _ASM_ALPHA_PARAM_H
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#define _ASM_ALPHA_PARAM_H
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/* ??? Gross. I don't want to parameterize this, and supposedly the
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hardware ignores reprogramming. We also need userland buy-in to the
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change in HZ, since this is visible in the wait4 resources etc. */
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#ifdef __KERNEL__
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#define HZ CONFIG_HZ
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#define USER_HZ HZ
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#else
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#define HZ 1024
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#endif
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#define EXEC_PAGESIZE 8192
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#ifndef NOGROUP
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#define NOGROUP (-1)
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#endif
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#define MAXHOSTNAMELEN 64 /* max length of hostname */
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#ifdef __KERNEL__
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# define CLOCKS_PER_SEC HZ /* frequency at which times() counts */
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#endif
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#endif /* _ASM_ALPHA_PARAM_H */
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