2009/3/31 <geoffchien@xxxxxxxxx>: > On 2008年9月29日, 上午1時20分, "John Kacur" <jka...@xxxxxxxxx> wrote: >> If you start with the real-time kernel linux-2.6.26.5-rt9 and >> configure it to disable CONFIG_PREEMPT_RT, for example >> CONFIG_PREEMPT_DESKTOP=y >> # CONFIG_PREEMPT_RT is not set >> >> you will get the following compile error on 32-bit i386. (actually, >> this will happen on any platform that doesn't use >> CONFIG_RWSEM_GENERIC_SPINLOCK) >> >> In file included from include/linux/notifier.h:14, >> from include/linux/memory_hotplug.h:6, >> from include/linux/mmzone.h:560, >> from include/linux/gfp.h:4, >> from include/linux/slab.h:12, >> from include/linux/percpu.h:5, >> from include/linux/rcupdate.h:39, >> from include/linux/tracepoint.h:18, >> from include/linux/module.h:19, >> from include/linux/crypto.h:21, >> from arch/x86/kernel/asm-offsets_32.c:7, >> from arch/x86/kernel/asm-offsets.c:2: >> include/linux/rwsem.h:149: error: redefinition of 'rwsem_is_locked' >> include/asm/rwsem.h:261: error: previous definition of >> 'rwsem_is_locked' was here >> include/linux/rwsem.h: In function 'rwsem_is_locked': >> include/linux/rwsem.h:151: error: implicit declaration of function >> 'compat_rwsem_is_locked' >> make[1]: *** [arch/x86/kernel/asm-offsets.s] Error 1 >> make: *** [prepare0] Error 2 >> >> The fix is simple, and should be folded back into the rt-mutex-core.patch >> Fix is attached. >> >> rwsem_is_locked-fix.patch >> 1K檢視下載 > > Hi, > My OS Kernel is Fedora 9 which is 2.6.25, and I've downloaded > linux-2.6.26.8.tar.bz2 and patch-2.6.26.8-rt16.bz2. Also I've already > patched them and downloaded the rwsem_is_locked-fix.patch and patched > the rwsem_is_locked-fix.patch with rwsem.h. But there are still some > problems, > it shows: > mm/slub.c: In function 'slab_unlock'; > mm/slub.c:1245: error: implicit declaration of function > '_bit_spin_unlock' > make[1]: ***[mm/slub.0] Error 1 > make: *** [mm] Error 2 > > Would you please tell me why I'm encountering these? > Sincerely > Geoffrey > Hmnn, did you apply the proposed rwsem_is_locked-fix.patch ontop of the rt-patch? Please don't use that patch since patch-2.6.26.8-rt16 should already have a fix for this problem. Please try this again, using only linux-2.6.26.8 and patch-2.6.26.8-rt16. John -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
