sched: use kzalloc() instead of the bootmem allocator

Now that kmem_cache_init() happens before sched_init(), we should use kzalloc()
and not the bootmem allocator.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

diff --git a/kernel/sched.c b/kernel/sched.c
index 14c447a..a9ff953 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -68,7 +68,6 @@
 #include <linux/pagemap.h>
 #include <linux/hrtimer.h>
 #include <linux/tick.h>
-#include <linux/bootmem.h>
 #include <linux/debugfs.h>
 #include <linux/ctype.h>
 #include <linux/ftrace.h>
@@ -7782,21 +7781,18 @@ static void rq_attach_root(struct rq *rq, struct root_domain *rd)
 
 static int __init_refok init_rootdomain(struct root_domain *rd, bool bootmem)
 {
+       gfp_t gfp = GFP_KERNEL;
+
        memset(rd, 0, sizeof(*rd));
 
-       if (bootmem) {
-               alloc_bootmem_cpumask_var(&def_root_domain.span);
-               alloc_bootmem_cpumask_var(&def_root_domain.online);
-               alloc_bootmem_cpumask_var(&def_root_domain.rto_mask);
-               cpupri_init(&rd->cpupri, true);
-               return 0;
-       }
+       if (bootmem)
+               gfp = GFP_NOWAIT;
 
-       if (!alloc_cpumask_var(&rd->span, GFP_KERNEL))
+       if (!alloc_cpumask_var(&rd->span, gfp))
                goto out;
-       if (!alloc_cpumask_var(&rd->online, GFP_KERNEL))
+       if (!alloc_cpumask_var(&rd->online, gfp))
                goto free_span;
-       if (!alloc_cpumask_var(&rd->rto_mask, GFP_KERNEL))
+       if (!alloc_cpumask_var(&rd->rto_mask, gfp))
                goto free_online;
 
        if (cpupri_init(&rd->cpupri, false) != 0)
@@ -9123,7 +9119,7 @@ void __init sched_init(void)
         * we use alloc_bootmem().
         */
        if (alloc_size) {
-               ptr = (unsigned long)alloc_bootmem(alloc_size);
+               ptr = (unsigned long)kzalloc(alloc_size, GFP_NOWAIT);
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
                init_task_group.se = (struct sched_entity **)ptr;