The patch titled
Subject: mm: use CPU_BITS_NONE to initialize init_mm.cpu_bitmask
has been added to the -mm tree. Its filename is
mm-use-cpu_bits_none-to-initialize-init_mmcpu_bitmask.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-use-cpu_bits_none-to-initialize-init_mmcpu_bitmask.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-use-cpu_bits_none-to-initialize-init_mmcpu_bitmask.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/main.c | 1 -
mm/init-mm.c | 2 +-
2 files changed, 1 insertion(+), 2 deletions(-)
--- a/init/main.c~mm-use-cpu_bits_none-to-initialize-init_mmcpu_bitmask
+++ a/init/main.c
@@ -595,7 +595,6 @@ asmlinkage __visible void __init start_k
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();
--- a/mm/init-mm.c~mm-use-cpu_bits_none-to-initialize-init_mmcpu_bitmask
+++ a/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)
};
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxx are
ia64-switch-to-generic-version-of-pte-allocation.patch
sh-switch-to-generic-version-of-pte-allocation.patch
mm-use-cpu_bits_none-to-initialize-init_mmcpu_bitmask.patch
mm-madvise-reduce-code-duplication-in-error-handling-paths.patch
