You might be interested in an earlier patch I made for 2.4.21 against MIPS CVS tree. http://linux.junsun.net/patches/oss.sgi.com/experimental/030304-b.preempt-mips.patch Jun On Thu, Aug 25, 2005 at 07:57:48PM +0600, Kishore K wrote: > When I try to compile 2.4.26 kernel with the pre-emption patch from > (http://www.kernel.org/pub/linux/kernel/people/rml/preempt-kernel/v2.4/) > for malta board based on MIPS 4kc, compilation fails with the > following error. > > [kishorek@blrn0092 linux-2.4.26]$ make vmlinux.srec > gcc -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -o > scripts/split-include scripts/split-include.c > scripts/split-include include/linux/autoconf.h include/config > mips-linux-gcc -D__KERNEL__ -I/home/kishorek/linux-2.4.26/include > -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing > -fno-common -fomit-frame-pointer -I > /home/kishorek/linux-2.4.26/include/asm/gcc -G 0 -mno-abicalls > -fno-pic -pipe -finline-limit=100000 -mabi=32 -march=mips32 -mips32 > -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap > -DKBUILD_BASENAME=main -c -o init/main.o init/main.c > In file included from /home/kishorek/linux-2.4.26/include/linux/fs.h:200, > from > /home/kishorek/linux-2.4.26/include/linux/capability.h:17, > from /home/kishorek/linux-2.4.26/include/linux/binfmts.h:5, > from /home/kishorek/linux-2.4.26/include/linux/sched.h:9, > from /home/kishorek/linux-2.4.26/include/linux/mm.h:4, > from /home/kishorek/linux-2.4.26/include/linux/slab.h:14, > from /home/kishorek/linux-2.4.26/include/linux/proc_fs.h:5, > from init/main.c:15: > /home/kishorek/linux-2.4.26/include/asm/semaphore.h: In function > `down_trylock':/home/kishorek/linux-2.4.26/include/asm/semaphore.h:230: > error: `current' undeclared (first use in this function) > /home/kishorek/linux-2.4.26/include/asm/semaphore.h:230: error: (Each > undeclared identifier is reported only once > /home/kishorek/linux-2.4.26/include/asm/semaphore.h:230: error: for > each function it appears in.) > /home/kishorek/linux-2.4.26/include/asm/semaphore.h:243: warning: > implicit declaration of function `preempt_schedule' > /home/kishorek/linux-2.4.26/include/asm/semaphore.h: In function `up': > /home/kishorek/linux-2.4.26/include/asm/semaphore.h:266: error: > `current' undeclared (first use in this function) > In file included from /home/kishorek/linux-2.4.26/include/linux/mm.h:4, > from /home/kishorek/linux-2.4.26/include/linux/slab.h:14, > from /home/kishorek/linux-2.4.26/include/linux/proc_fs.h:5, > from init/main.c:15: > /home/kishorek/linux-2.4.26/include/linux/sched.h: At top level: > /home/kishorek/linux-2.4.26/include/linux/sched.h:152: warning: type > mismatch with previous implicit declaration > /home/kishorek/linux-2.4.26/include/asm/semaphore.h:273: warning: > previous implicit declaration of `preempt_schedule' > /home/kishorek/linux-2.4.26/include/linux/sched.h:152: warning: > `preempt_schedule' was previously implicitly declared to return `int' > In file included from /home/kishorek/linux-2.4.26/include/linux/sched.h:586, > from /home/kishorek/linux-2.4.26/include/linux/mm.h:4, > from /home/kishorek/linux-2.4.26/include/linux/slab.h:14, > from /home/kishorek/linux-2.4.26/include/linux/proc_fs.h:5, > from init/main.c:15: > /home/kishorek/linux-2.4.26/include/asm/current.h:15: error: `current' > used prior to declaration > make: *** [init/main.o] Error 1 > > May I know, if any of you tried the pre-emption patch for 2.4.26 on > mips platform. If so, please let me know the changes to be done or any > other patch needs to be applied. > > Here are the details of my toolchain > gcc 3.3.6, binutils: 2.14.90.0.8, uclibc-0.9.27 > Kernel configuration file is enclosed along with this mail. > > TIA, > --kishore
