linux-kernel - [PATCH] cpufreq: intel_pstate: constify attribute

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Message-Id: <229e26ffc410cf4908c55ca0cb13906fd4bf4cf5.1499068985.git.arvind.yadav.cs@gmail.com>
Date:   Mon,  3 Jul 2017 13:40:33 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     srinivas.pandruvada@...ux.intel.com, lenb@...nel.org,
        rjw@...ysocki.net, rafael.j.wysocki@...el.com,
        viresh.kumar@...aro.org
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] cpufreq: intel_pstate: constify attribute_group structures.

attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
  15197	   2552	     40	  17789	   457d	drivers/cpufreq/intel_pstate.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
  15261	   2488	     40	  17789	   457d	drivers/cpufreq/intel_pstate.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/cpufreq/intel_pstate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index b7de5bd..4323f94 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1212,7 +1212,7 @@ static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b,
 	NULL
 };
 
-static struct attribute_group intel_pstate_attr_group = {
+static const struct attribute_group intel_pstate_attr_group = {
 	.attrs = intel_pstate_attributes,
 };
 
-- 
1.9.1