+ kernel-cpuc-eliminate-cpu__mask.patch added to -mm tree

+ kernel-cpuc-eliminate-cpu__mask.patch added to -mm tree

[akpm]

The patch titled
     Subject: kernel/cpu.c: eliminate cpu_*_mask
has been added to the -mm tree.  Its filename is
     kernel-cpuc-eliminate-cpu__mask.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/kernel-cpuc-eliminate-cpu__mask.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/kernel-cpuc-eliminate-cpu__mask.patch

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------------------------------------------------------
From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: kernel/cpu.c: eliminate cpu_*_mask

Replace the variables cpu_possible_mask, cpu_online_mask, cpu_present_mask
and cpu_active_mask with macros expanding to expressions of the same type
and value, eliminating some indirection.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/cpumask.h |    8 ++++----
 kernel/cpu.c            |    8 --------
 2 files changed, 4 insertions(+), 12 deletions(-)

diff -puN include/linux/cpumask.h~kernel-cpuc-eliminate-cpu__mask include/linux/cpumask.h
--- a/include/linux/cpumask.h~kernel-cpuc-eliminate-cpu__mask
+++ a/include/linux/cpumask.h
@@ -85,14 +85,14 @@ extern int nr_cpu_ids;
  *    only one CPU.
  */
 
-extern const struct cpumask *const cpu_possible_mask;
-extern const struct cpumask *const cpu_online_mask;
-extern const struct cpumask *const cpu_present_mask;
-extern const struct cpumask *const cpu_active_mask;
 extern struct cpumask __cpu_possible_mask;
 extern struct cpumask __cpu_online_mask;
 extern struct cpumask __cpu_present_mask;
 extern struct cpumask __cpu_active_mask;
+#define cpu_possible_mask ((const struct cpumask *)&__cpu_possible_mask)
+#define cpu_online_mask   ((const struct cpumask *)&__cpu_online_mask)
+#define cpu_present_mask  ((const struct cpumask *)&__cpu_present_mask)
+#define cpu_active_mask   ((const struct cpumask *)&__cpu_active_mask)
 
 #if NR_CPUS > 1
 #define num_online_cpus()	cpumask_weight(cpu_online_mask)
diff -puN kernel/cpu.c~kernel-cpuc-eliminate-cpu__mask kernel/cpu.c
--- a/kernel/cpu.c~kernel-cpuc-eliminate-cpu__mask
+++ a/kernel/cpu.c
@@ -765,23 +765,15 @@ struct cpumask __cpu_possible_mask __rea
 struct cpumask __cpu_possible_mask __read_mostly;
 #endif
 EXPORT_SYMBOL(__cpu_possible_mask);
-const struct cpumask *const cpu_possible_mask = &__cpu_possible_mask;
-EXPORT_SYMBOL(cpu_possible_mask);
 
 struct cpumask __cpu_online_mask __read_mostly;
 EXPORT_SYMBOL(__cpu_online_mask);
-const struct cpumask *const cpu_online_mask = &__cpu_online_mask;
-EXPORT_SYMBOL(cpu_online_mask);
 
 struct cpumask __cpu_present_mask __read_mostly;
 EXPORT_SYMBOL(__cpu_present_mask);
-const struct cpumask *const cpu_present_mask = &__cpu_present_mask;
-EXPORT_SYMBOL(cpu_present_mask);
 
 struct cpumask __cpu_active_mask __read_mostly;
 EXPORT_SYMBOL(__cpu_active_mask);
-const struct cpumask *const cpu_active_mask = &__cpu_active_mask;
-EXPORT_SYMBOL(cpu_active_mask);
 
 void set_cpu_possible(unsigned int cpu, bool possible)
 {
_

Patches currently in -mm which might be from linux@rasmusvillemoes.dk are

powerpc-fadump-rename-cpu_online_mask-member-of-struct-fadump_crash_info_header.patch
kernel-cpuc-change-type-of-cpu_possible_bits-and-friends.patch
kernel-cpuc-export-__cpu__mask.patch
drivers-base-cpuc-use-__cpu__mask-directly.patch
kernel-cpuc-eliminate-cpu__mask.patch
kernel-cpuc-make-set_cpu_-static-inlines.patch