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authorEmese Revfy <re.emese@gmail.com>2010-01-19 04:58:23 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-08 04:04:49 +0300
commit52cf25d0ab7f78eeecc59ac652ed5090f69b619e (patch)
tree031d1ffb3890bd69c0260c864c512e0be62ac05c /arch
parent6c1733aca0b48db4d0e660d54976a1cca25b5eaf (diff)
downloadlinux-52cf25d0ab7f78eeecc59ac652ed5090f69b619e.tar.xz
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 'arch')
-rw-r--r--arch/ia64/kernel/topology.c2
-rw-r--r--arch/powerpc/kernel/cacheinfo.c2
-rw-r--r--arch/sh/kernel/cpu/sh4/sq.c2
-rw-r--r--arch/x86/kernel/cpu/intel_cacheinfo.c2
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce_amd.c2
5 files changed, 5 insertions, 5 deletions
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index 8f060352e129..b3a5818088d9 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -282,7 +282,7 @@ static ssize_t cache_show(struct kobject * kobj, struct attribute * attr, char *
return ret;
}
-static struct sysfs_ops cache_sysfs_ops = {
+static const struct sysfs_ops cache_sysfs_ops = {
.show = cache_show
};
diff --git a/arch/powerpc/kernel/cacheinfo.c b/arch/powerpc/kernel/cacheinfo.c
index bb37b1d19a58..01fe9ce28379 100644
--- a/arch/powerpc/kernel/cacheinfo.c
+++ b/arch/powerpc/kernel/cacheinfo.c
@@ -642,7 +642,7 @@ static struct kobj_attribute *cache_index_opt_attrs[] = {
&cache_assoc_attr,
};
-static struct sysfs_ops cache_index_ops = {
+static const struct sysfs_ops cache_index_ops = {
.show = cache_index_show,
};
diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index fc065f9da6e5..14726eef1ce0 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -326,7 +326,7 @@ static struct attribute *sq_sysfs_attrs[] = {
NULL,
};
-static struct sysfs_ops sq_sysfs_ops = {
+static const struct sysfs_ops sq_sysfs_ops = {
.show = sq_sysfs_show,
.store = sq_sysfs_store,
};
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index eddb1bdd1b8f..b3eeb66c0a51 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -903,7 +903,7 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
return ret;
}
-static struct sysfs_ops sysfs_ops = {
+static const struct sysfs_ops sysfs_ops = {
.show = show,
.store = store,
};
diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c
index 83a3d1f4efca..cda932ca3ade 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c
@@ -388,7 +388,7 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
return ret;
}
-static struct sysfs_ops threshold_ops = {
+static const struct sysfs_ops threshold_ops = {
.show = show,
.store = store,
};