tree 7b0adff66f353b173a3adc05b03b3279bef63c40
parent 758b2cdc6f6a22c702bd8f2344382fb1270b2161
author Rusty Russell <rusty@rustcorp.com.au> 1227542704 +1030
committer Ingo Molnar <mingo@elte.hu> 1227545457 +0100

sched: convert struct sched_group/sched_domain cpumask_ts to variable bitmaps

Impact: (future) size reduction for large NR_CPUS.

We move the 'cpumask' member of sched_group to the end, so when we
kmalloc it we can do a minimal allocation: saves space for small
nr_cpu_ids but big CONFIG_NR_CPUS.  Similar trick for 'span' in
sched_domain.

This isn't quite as good as converting to a cpumask_var_t, as some
sched_groups are actually static, but it's safer: we don't have to
figure out where to call alloc_cpumask_var/free_cpumask_var.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>