[PATCH] ARM: cpuidle: declare cpuidle_ops __read_mostly

Jisheng Zhang
2016-08-10T18:20:20Z

cpuidle_ops is initialized once by arm_cpuidle_read_ops() during
initialization, and thereafter is mostly read in arm_cpuidle_suspend()

The fact that it is mostly read and not written to makes it candidates
for __read_mostly declarations.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
---
arch/arm/kernel/cpuidle.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/kernel/cpuidle.c b/arch/arm/kernel/cpuidle.c
index 7dccc96..762e0929 100644
--- a/arch/arm/kernel/cpuidle.c
+++ b/arch/arm/kernel/cpuidle.c
@@ -19,7 +19,7 @@ extern struct of_cpuidle_method __cpuidle_method_of_table[];
static const struct of_cpuidle_method __cpuidle_method_of_table_sentinel
__used __section(__cpuidle_method_of_table_end);

-static struct cpuidle_ops cpuidle_ops[NR_CPUS];
+static struct cpuidle_ops cpuidle_ops[NR_CPUS] __read_mostly;

/**
* arm_cpuidle_simple_enter() - a wrapper to cpu_do_idle()
--
2.8.1