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On Wed, 12 Mar 2008 08:21:41 +0100 Laurent Riffard <laurent.riffard@free.fr> wrote: > Le 11.03.2008 09:14, Andrew Morton a __crit :> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.25-rc5/2.6.25-rc5-mm1/> > > > The kernel won't build if CONFIG_NO_HZ=y and CONFIG_PREEMPT_RCU=y: > > $ grep -e PREEMPT -e HZ .config> CONFIG_NO_HZ=y> # CONFIG_PREEMPT_NONE is not set> # CONFIG_PREEMPT_VOLUNTARY is not set> CONFIG_PREEMPT=y> CONFIG_PREEMPT_RCU=y> # CONFIG_HZ_100 is not set> CONFIG_HZ_250=y> # CONFIG_HZ_300 is not set> # CONFIG_HZ_1000 is not set> CONFIG_HZ=250> CONFIG_DEBUG_PREEMPT=y> $> $ make> ...> CC init/main.o > In file included from include/linux/rcupdate.h:60, > from include/linux/rculist.h:11, > from include/linux/dcache.h:9, > from include/linux/fs.h:279, > from include/linux/proc_fs.h:6, > from init/main.c:15: > include/linux/rcupreempt.h: In function 'rcu_enter_nohz': > include/linux/rcupreempt.h:91: error: 'HZ' undeclared (first use in this function) > include/linux/rcupreempt.h:91: error: (Each undeclared identifier is reported only once > include/linux/rcupreempt.h:91: error: for each function it appears in.) > include/linux/rcupreempt.h: In function 'rcu_exit_nohz': > include/linux/rcupreempt.h:99: error: 'HZ' undeclared (first use in this function) hm, it works OK for me, but I don't have your full config. This, I guess: --- a/include/asm-generic/bug.h~add-warn_on_secs-macro-fix-fix +++ a/include/asm-generic/bug.h @@ -2,7 +2,7 @@ #define _ASM_GENERIC_BUG_H #include <linux/compiler.h> - +#include <linux/param.h> #ifdef CONFIG_BUG _ | ||||||||||||
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