[PATCH 2/3] cpuidle: remove useless array definition in cpuidle_structure

Daniel Lezcano daniel.lezcano at linaro.org
Mon Mar 26 12:51:27 UTC 2012


All the modules name are ro-data, it is never copied to the array.

eg.

static struct cpuidle_driver intel_idle_driver = {
        .name = "intel_idle",
        .owner = THIS_MODULE,
};

It safe to assign the pointer of this ro-data to a const char *.
By this way we save 12 bytes.

Signed-off-by: Daniel Lezcano <daniel.lezcano at linaro.org>
Acked-by: Deepthi Dharwar <deepthi at linux.vnet.ibm.com>
Tested-by: Deepthi Dharwar <deepthi at linux.vnet.ibm.com>
---
 include/linux/cpuidle.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index ca4e498..f7f1d90 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -120,7 +120,7 @@ static inline int cpuidle_get_last_residency(struct cpuidle_device *dev)
  ****************************/
 
 struct cpuidle_driver {
-	char			name[CPUIDLE_NAME_LEN];
+	const char		*name;
 	struct module 		*owner;
 
 	unsigned int		power_specified:1;
-- 
1.7.5.4




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