[PATCH v2, resend 3/6] kernel/cpu.c: export __cpu_*_mask

From: Rasmus Villemoes
Date: Mon Nov 23 2015 - 15:00:55 EST

Exporting the cpumasks __cpu_possible_mask and friends will allow us
to remove the extra indirection through the cpu_*_mask variables. It
will also allow the set_cpu_* functions to become static inlines,
which will give a .text reduction.

Acked-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
include/linux/cpumask.h | 4 ++++
kernel/cpu.c | 14 +++++++++-----
2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 59915ea5373c..d4545a1852f2 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -89,6 +89,10 @@ 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;

#if NR_CPUS > 1
#define num_online_cpus() cpumask_weight(cpu_online_mask)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 6a96b713cea7..35d1d45be8e9 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -759,23 +759,27 @@ const DECLARE_BITMAP(cpu_all_bits, NR_CPUS) = CPU_BITS_ALL;

-static struct cpumask __cpu_possible_mask __read_mostly
+struct cpumask __cpu_possible_mask __read_mostly
-static struct cpumask __cpu_possible_mask __read_mostly;
+struct cpumask __cpu_possible_mask __read_mostly;
const struct cpumask *const cpu_possible_mask = &__cpu_possible_mask;

-static struct cpumask __cpu_online_mask __read_mostly;
+struct cpumask __cpu_online_mask __read_mostly;
const struct cpumask *const cpu_online_mask = &__cpu_online_mask;

-static struct cpumask __cpu_present_mask __read_mostly;
+struct cpumask __cpu_present_mask __read_mostly;
const struct cpumask *const cpu_present_mask = &__cpu_present_mask;

-static struct cpumask __cpu_active_mask __read_mostly;
+struct cpumask __cpu_active_mask __read_mostly;
const struct cpumask *const cpu_active_mask = &__cpu_active_mask;


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