including <linux/smp.h> in spinlock.h

including <linux/smp.h> in spinlock.h

[yuan li]

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hi,

I'm trying to include the header file "*<linux/smp.h>*" in "*
linux-2.6.18-xen.hg/include/asm-x86_64/spinlock.h*". By doing that, I hope I
can refer to  the  function "*smp_processor_id()*" in "*
linux-2.6.18-xen.hg/include/asm-x86_64/spinlock.h*".  But when I do that and
compile xen, the following warning and error appear:

...
...
 CC [M]  fs/bfs/file.o
In file included from include2/asm/vsyscall.h:15,
                 from include2/asm/mach-xen/asm/fixmap.h:17,
                 from include2/asm/mach-xen/asm/smp.h:16,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/smp.h:18,
                 from include2/asm/spinlock.h:8,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/spinlock.h:86,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/wait.h:24,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/fs.h:226,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/fs/bfs/file.c:7:
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/seqlock.h: In function
‘write_seqlock’:
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/seqlock.h:59: warning:
implicit declaration of function ‘spin_lock’
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/seqlock.h: In function
‘write_sequnlock’:
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/seqlock.h:68: warning:
implicit declaration of function ‘spin_unlock’
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/seqlock.h: In function
‘write_tryseqlock’:
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/seqlock.h:73: warning:
implicit declaration of function ‘spin_trylock’
  CC [M]  fs/bfs/dir.o
In file included from include2/asm/mach-xen/asm/fixmap.h:17,
                 from include2/asm/mach-xen/asm/smp.h:16,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/smp.h:18,
                 from include2/asm/spinlock.h:8,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/spinlock.h:86,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/seqlock.h:29,
                 from
/usr/src/xen-3.4.2/linux-2.6.18-xen.hg/include/linux/time.h:7,
                 from /usr/src/xen-3.4.2/linux-2.6.18-xen.hg/fs/bfs/dir.c:8:
include2/asm/vsyscall.h:47: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or
‘__attribute__’ before ‘__xtime_lock’
include2/asm/vsyscall.h:54: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or
‘__attribute__’ before ‘xtime_lock’
make[8]: *** [fs/bfs/dir.o] Error 1
make[7]: *** [fs/bfs] Error 2
make[6]: *** [fs] Error 2
make[5]: *** [modules] Error 2
make[4]: *** [modules] Error 2
...
...

What's wrong?  I'll be very appreciated if you reply to me.

Xen: 3.4.2
Linux: 2.6.18-8.el5 #1 SMP Fri Jan 26 14:15:14 EST 2007 x86_64 x86_64 x86_64
GNU/Linux

Thank you : )

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