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authorMike Rapoport <rppt@linux.ibm.com>2019-09-23 15:36:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-24 15:54:10 -0700
commit2286bf4e4d8f2fda407222b54f685dff3b80e0a0 (patch)
tree1b98c91cde4aa7821666065c4e08eae6e2fbb85e
parent7ea362427c170061b8822dd41bafaa72b3bcb9ad (diff)
downloadlinux-2286bf4e4d8f2fda407222b54f685dff3b80e0a0.tar.bz2
mm: use CPU_BITS_NONE to initialize init_mm.cpu_bitmask
Replace open-coded bitmap array initialization of init_mm.cpu_bitmask with neat CPU_BITS_NONE macro. And, since init_mm.cpu_bitmask is statically set to zero, there is no way to clear it again in start_kernel(). Link: http://lkml.kernel.org/r/1565703815-8584-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--init/main.c1
-rw-r--r--mm/init-mm.c2
2 files changed, 1 insertions, 2 deletions
diff --git a/init/main.c b/init/main.c
index 99a5f55e0d02..208b8fa1808e 100644
--- a/init/main.c
+++ b/init/main.c
@@ -594,7 +594,6 @@ asmlinkage __visible void __init start_kernel(void)
page_address_init();
pr_notice("%s", linux_banner);
setup_arch(&command_line);
- mm_init_cpumask(&init_mm);
setup_command_line(command_line);
setup_nr_cpu_ids();
setup_per_cpu_areas();
diff --git a/mm/init-mm.c b/mm/init-mm.c
index a787a319211e..fb1e15028ef0 100644
--- a/mm/init-mm.c
+++ b/mm/init-mm.c
@@ -35,6 +35,6 @@ struct mm_struct init_mm = {
.arg_lock = __SPIN_LOCK_UNLOCKED(init_mm.arg_lock),
.mmlist = LIST_HEAD_INIT(init_mm.mmlist),
.user_ns = &init_user_ns,
- .cpu_bitmap = { [BITS_TO_LONGS(NR_CPUS)] = 0},
+ .cpu_bitmap = CPU_BITS_NONE,
INIT_MM_CONTEXT(init_mm)
};