Driver core: Constify struct sysfs_ops in struct kobj_type
Constify struct sysfs_ops.
This is part of the ops structure constification
effort started by Arjan van de Ven et al.
Benefits of this constification:
* prevents modification of data that is shared
(referenced) by many other structure instances
at runtime
* detects/prevents accidental (but not intentional)
modification attempts on archs that enforce
read-only kernel data at runtime
* potentially better optimized code as the compiler
can assume that the const data cannot be changed
* the compiler/linker move const data into .rodata
and therefore exclude them from false sharing
Signed-off-by: Emese Revfy <re.emese@gmail.com>
Acked-by: David Teigland <teigland@redhat.com>
Acked-by: Matt Domsch <Matt_Domsch@dell.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
index 5376457..5fdedbc 100644
--- a/drivers/edac/edac_device_sysfs.c
+++ b/drivers/edac/edac_device_sysfs.c
@@ -137,7 +137,7 @@
}
/* edac_dev file operations for an 'ctl_info' */
-static struct sysfs_ops device_ctl_info_ops = {
+static const struct sysfs_ops device_ctl_info_ops = {
.show = edac_dev_ctl_info_show,
.store = edac_dev_ctl_info_store
};
@@ -373,7 +373,7 @@
}
/* edac_dev file operations for an 'instance' */
-static struct sysfs_ops device_instance_ops = {
+static const struct sysfs_ops device_instance_ops = {
.show = edac_dev_instance_show,
.store = edac_dev_instance_store
};
@@ -476,7 +476,7 @@
}
/* edac_dev file operations for a 'block' */
-static struct sysfs_ops device_block_ops = {
+static const struct sysfs_ops device_block_ops = {
.show = edac_dev_block_show,
.store = edac_dev_block_store
};