linux-kernel - [PATCH v2 6/6] kernel/cpu.c: make set_cpu

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Message-Id: <1444144919-25143-7-git-send-email-linux@rasmusvillemoes.dk>
Date:	Tue,  6 Oct 2015 17:21:59 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Rusty Russell <rusty@...tcorp.com.au>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>
Cc:	Michael Ellerman <mpe@...erman.id.au>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 6/6] kernel/cpu.c: make set_cpu_* static inlines

Almost all callers of the set_cpu_* functions pass an explicit true
or false. Making them static inline thus replaces the function calls
with a simple set_bit/clear_bit, saving some .text.

Acked-by: Rusty Russell <rusty@...tcorp.com.au>
Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 include/linux/cpumask.h | 43 +++++++++++++++++++++++++++++++++++++++----
 kernel/cpu.c            | 34 ----------------------------------
 2 files changed, 39 insertions(+), 38 deletions(-)

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 52ab539aefce..fc14275ff34e 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -720,14 +720,49 @@ extern const DECLARE_BITMAP(cpu_all_bits, NR_CPUS);
 #define for_each_present_cpu(cpu)  for_each_cpu((cpu), cpu_present_mask)
 
 /* Wrappers for arch boot code to manipulate normally-constant masks */
-void set_cpu_possible(unsigned int cpu, bool possible);
-void set_cpu_present(unsigned int cpu, bool present);
-void set_cpu_online(unsigned int cpu, bool online);
-void set_cpu_active(unsigned int cpu, bool active);
 void init_cpu_present(const struct cpumask *src);
 void init_cpu_possible(const struct cpumask *src);
 void init_cpu_online(const struct cpumask *src);
 
+static inline void
+set_cpu_possible(unsigned int cpu, bool possible)
+{
+	if (possible)
+		cpumask_set_cpu(cpu, &__cpu_possible_mask);
+	else
+		cpumask_clear_cpu(cpu, &__cpu_possible_mask);
+}
+
+static inline void
+set_cpu_present(unsigned int cpu, bool present)
+{
+	if (present)
+		cpumask_set_cpu(cpu, &__cpu_present_mask);
+	else
+		cpumask_clear_cpu(cpu, &__cpu_present_mask);
+}
+
+static inline void
+set_cpu_online(unsigned int cpu, bool online)
+{
+	if (online) {
+		cpumask_set_cpu(cpu, &__cpu_online_mask);
+		cpumask_set_cpu(cpu, &__cpu_active_mask);
+	} else {
+		cpumask_clear_cpu(cpu, &__cpu_online_mask);
+	}
+}
+
+static inline void
+set_cpu_active(unsigned int cpu, bool active)
+{
+	if (active)
+		cpumask_set_cpu(cpu, &__cpu_active_mask);
+	else
+		cpumask_clear_cpu(cpu, &__cpu_active_mask);
+}
+
+
 /**
  * to_cpumask - convert an NR_CPUS bitmap to a struct cpumask *
  * @bitmap: the bitmap
diff --git a/kernel/cpu.c b/kernel/cpu.c
index dd70f600442f..5210d80efc28 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -788,40 +788,6 @@ EXPORT_SYMBOL(__cpu_present_mask);
 struct cpumask __cpu_active_mask __read_mostly;
 EXPORT_SYMBOL(__cpu_active_mask);
 
-void set_cpu_possible(unsigned int cpu, bool possible)
-{
-	if (possible)
-		cpumask_set_cpu(cpu, &__cpu_possible_mask);
-	else
-		cpumask_clear_cpu(cpu, &__cpu_possible_mask);
-}
-
-void set_cpu_present(unsigned int cpu, bool present)
-{
-	if (present)
-		cpumask_set_cpu(cpu, &__cpu_present_mask);
-	else
-		cpumask_clear_cpu(cpu, &__cpu_present_mask);
-}
-
-void set_cpu_online(unsigned int cpu, bool online)
-{
-	if (online) {
-		cpumask_set_cpu(cpu, &__cpu_online_mask);
-		cpumask_set_cpu(cpu, &__cpu_active_mask);
-	} else {
-		cpumask_clear_cpu(cpu, &__cpu_online_mask);
-	}
-}
-
-void set_cpu_active(unsigned int cpu, bool active)
-{
-	if (active)
-		cpumask_set_cpu(cpu, &__cpu_active_mask);
-	else
-		cpumask_clear_cpu(cpu, &__cpu_active_mask);
-}
-
 void init_cpu_present(const struct cpumask *src)
 {
 	cpumask_copy(&__cpu_present_mask, src);
-- 
2.1.3

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