Re: [PATCH] 2.5: task cpu affinity syscalls

[Anton Blanchard]

> Attached is a resync to 2.5.8-pre2 of my CPU affinity syscalls for 2.5's
> scheduler.
> 
> This patch implements two new syscalls:
> 
> 	int sched_setaffinity(pid_t pid, unsigned int len,
> 				unsigned long *new_mask_ptr)
> 
> 	int sched_getaffinity(pid_t pid, unsigned int *user_len_ptr,
> 				unsigned long *user_mask_ptr)

Since this isnt 32/64 bit compatible on big endian machines, can you
write some wrapper functions before all the archs implement it
themselves?

Think of 32 bit userspace passing a big endian bitmask into a 64 bit
kernel:

32 bit:
31-0 63-32 95-64 127-96

64 bit:
63-0 127-64

Anton