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authorRusty Russell <rusty@rustcorp.com.au>2008-11-24 19:05:13 +0300
committerIngo Molnar <mingo@elte.hu>2008-11-24 19:52:22 +0300
commit68e74568fbe5854952355e942acca51f138096d9 (patch)
tree6263627b3b3c7e249f685ba0fe4d76002e882cd0 /kernel/sched_cpupri.h
parent4212823fb459eacc8098dd420bb68ebb9917989d (diff)
downloadlinux-68e74568fbe5854952355e942acca51f138096d9.tar.xz
sched: convert struct cpupri_vec cpumask_var_t.
Impact: stack usage reduction, (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. The fact cpupro_init is called both before and after the slab is available makes for an ugly parameter unfortunately. We also use cpumask_any_and to get rid of a temporary in cpupri_find. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_cpupri.h')
-rw-r--r--kernel/sched_cpupri.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched_cpupri.h b/kernel/sched_cpupri.h
index f25811b0f931..642a94ef8a0a 100644
--- a/kernel/sched_cpupri.h
+++ b/kernel/sched_cpupri.h
@@ -14,7 +14,7 @@
struct cpupri_vec {
spinlock_t lock;
int count;
- cpumask_t mask;
+ cpumask_var_t mask;
};
struct cpupri {
@@ -27,7 +27,8 @@ struct cpupri {
int cpupri_find(struct cpupri *cp,
struct task_struct *p, cpumask_t *lowest_mask);
void cpupri_set(struct cpupri *cp, int cpu, int pri);
-void cpupri_init(struct cpupri *cp);
+int cpupri_init(struct cpupri *cp, bool bootmem);
+void cpupri_cleanup(struct cpupri *cp);
#else
#define cpupri_set(cp, cpu, pri) do { } while (0)
#define cpupri_init() do { } while (0)