[PATCH] uml: avoid "CONFIG_NR_CPUS undeclared" bogus error messages

Olaf Hering <olh@suse.de>

Olaf reported UML doesn't build for him with a clear analisys of what happened
- we're using NR_CPUS in files linked against glibc headers.  Seems like it
defines CONFIG_SMP but not CONFIG_NR_CPUS, so we get CONFIG_NR_CPUS
undeclared.

The fix is to move the declaration away from that header file and move it in
asm-um headers, and to add that header where needed.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-um/smp.h

@@ -23,6 +23,8 @@ extern inline void smp_cpus_done(unsigned int maxcpus)
 {
 }
 
+extern struct task_struct *idle_threads[NR_CPUS];
+
 #endif
 
 #endif