diff options
author | Emese Revfy <re.emese@gmail.com> | 2010-01-18 20:58:23 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-07 20:04:49 -0500 |
commit | 52cf25d0ab7f78eeecc59ac652ed5090f69b619e (patch) | |
tree | 031d1ffb3890bd69c0260c864c512e0be62ac05c /samples/kobject | |
parent | 6c1733aca0b48db4d0e660d54976a1cca25b5eaf (diff) |
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>
Diffstat (limited to 'samples/kobject')
-rw-r--r-- | samples/kobject/kset-example.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/kobject/kset-example.c b/samples/kobject/kset-example.c index 7c608814052..3b126d1f859 100644 --- a/samples/kobject/kset-example.c +++ b/samples/kobject/kset-example.c | |||
@@ -87,7 +87,7 @@ static ssize_t foo_attr_store(struct kobject *kobj, | |||
87 | } | 87 | } |
88 | 88 | ||
89 | /* Our custom sysfs_ops that we will associate with our ktype later on */ | 89 | /* Our custom sysfs_ops that we will associate with our ktype later on */ |
90 | static struct sysfs_ops foo_sysfs_ops = { | 90 | static const struct sysfs_ops foo_sysfs_ops = { |
91 | .show = foo_attr_show, | 91 | .show = foo_attr_show, |
92 | .store = foo_attr_store, | 92 | .store = foo_attr_store, |
93 | }; | 93 | }; |