tree ee7fc9031eb14ac1c9d2f0732950b4faae2b6245
parent 6a7b3dc3440f7b5a9b67594af01ed562cdeb41e4
author Rusty Russell <rusty@rustcorp.com.au> 1227542705 +1030
committer Ingo Molnar <mingo@elte.hu> 1227545478 +0100

sched: convert struct root_domain to cpumask_var_t.

Impact: (future) size reduction for large NR_CPUS.

Dynamically allocating cpumasks (when CONFIG_CPUMASK_OFFSTACK) saves
space for small nr_cpu_ids but big CONFIG_NR_CPUS.  cpumask_var_t
is just a struct cpumask for !CONFIG_CPUMASK_OFFSTACK.

def_root_domain is static, and so its masks are initialized with
alloc_bootmem_cpumask_var.  After that, alloc_cpumask_var is used.

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