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Date: Fri, 11 Jan 2008 08:40:53 +0000
From: "Jan Beulich" <jbeulich@...ell.com>
To: <linux-kernel@...r.kernel.org>
Cc: <mingo@...e.hu>, <tony.luck@...el.com>, <axboe@...nel.dk>,
<gregkh@...e.de>
Subject: [PATCH 3/3] constify struct sysfs_ops
.. as again all consumers of it don't require it to be modifiable.
As before, the patch doesn't change all instances where 'const' could
have been added as a result of the base structure changes, only where
either the change has a real effect (the module loader doesn't enforce
read-only section attributes at present, so only built-in files matter)
or where compiler warnings would result otherwise.
Signed-off-by: Jan Beulich <jbeulich@...ell.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Jens Axboe <axboe@...nel.dk>
Cc: Greg Kroah-Hartman <gregkh@...e.de>
---
Documentation/kobject.txt | 2 +-
arch/ia64/kernel/topology.c | 2 +-
arch/x86/kernel/cpu/intel_cacheinfo.c | 2 +-
arch/x86/kernel/cpu/mcheck/mce_amd_64.c | 2 +-
block/elevator.c | 2 +-
block/genhd.c | 2 +-
block/ll_rw_blk.c | 2 +-
drivers/base/bus.c | 4 ++--
drivers/base/class.c | 4 ++--
drivers/base/core.c | 2 +-
drivers/base/sys.c | 4 ++--
drivers/cpufreq/cpufreq.c | 2 +-
drivers/cpuidle/sysfs.c | 4 ++--
drivers/pci/pci-driver.c | 2 +-
fs/partitions/check.c | 2 +-
fs/sysfs/file.c | 10 +++++-----
include/linux/kobject.h | 2 +-
kernel/params.c | 10 +---------
mm/slub.c | 2 +-
19 files changed, 27 insertions(+), 35 deletions(-)
--- 2.6.24-rc7-const.orig/Documentation/kobject.txt
+++ 2.6.24-rc7-const/Documentation/kobject.txt
@@ -262,7 +262,7 @@ embedded in a subsystem itself.
struct kobj_type {
void (*release)(struct kobject *);
- struct sysfs_ops * sysfs_ops;
+ const struct sysfs_ops *sysfs_ops;
struct attribute *const *default_attrs;
};
--- 2.6.24-rc7-const.orig/arch/ia64/kernel/topology.c
+++ 2.6.24-rc7-const/arch/ia64/kernel/topology.c
@@ -267,7 +267,7 @@ static ssize_t cache_show(struct kobject
return ret;
}
-static struct sysfs_ops cache_sysfs_ops = {
+static const struct sysfs_ops cache_sysfs_ops = {
.show = cache_show
};
--- 2.6.24-rc7-const.orig/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ 2.6.24-rc7-const/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -668,7 +668,7 @@ static ssize_t store(struct kobject * ko
return 0;
}
-static struct sysfs_ops sysfs_ops = {
+static const struct sysfs_ops sysfs_ops = {
.show = show,
.store = store,
};
--- 2.6.24-rc7-const.orig/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
+++ 2.6.24-rc7-const/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
@@ -377,7 +377,7 @@ static ssize_t store(struct kobject *kob
return ret;
}
-static struct sysfs_ops threshold_ops = {
+static const struct sysfs_ops threshold_ops = {
.show = show,
.store = store,
};
--- 2.6.24-rc7-const.orig/block/elevator.c
+++ 2.6.24-rc7-const/block/elevator.c
@@ -916,7 +916,7 @@ elv_attr_store(struct kobject *kobj, str
return error;
}
-static struct sysfs_ops elv_sysfs_ops = {
+static const struct sysfs_ops elv_sysfs_ops = {
.show = elv_attr_show,
.store = elv_attr_store,
};
--- 2.6.24-rc7-const.orig/block/genhd.c
+++ 2.6.24-rc7-const/block/genhd.c
@@ -389,7 +389,7 @@ static ssize_t disk_attr_store(struct ko
return ret;
}
-static struct sysfs_ops disk_sysfs_ops = {
+static const struct sysfs_ops disk_sysfs_ops = {
.show = &disk_attr_show,
.store = &disk_attr_store,
};
--- 2.6.24-rc7-const.orig/block/ll_rw_blk.c
+++ 2.6.24-rc7-const/block/ll_rw_blk.c
@@ -4162,7 +4162,7 @@ queue_attr_store(struct kobject *kobj, s
return res;
}
-static struct sysfs_ops queue_sysfs_ops = {
+static const struct sysfs_ops queue_sysfs_ops = {
.show = queue_attr_show,
.store = queue_attr_store,
};
--- 2.6.24-rc7-const.orig/drivers/base/bus.c
+++ 2.6.24-rc7-const/drivers/base/bus.c
@@ -66,7 +66,7 @@ drv_attr_store(struct kobject * kobj, st
return ret;
}
-static struct sysfs_ops driver_sysfs_ops = {
+static const struct sysfs_ops driver_sysfs_ops = {
.show = drv_attr_show,
.store = drv_attr_store,
};
@@ -125,7 +125,7 @@ bus_attr_store(struct kobject * kobj, st
return ret;
}
-static struct sysfs_ops bus_sysfs_ops = {
+static const struct sysfs_ops bus_sysfs_ops = {
.show = bus_attr_show,
.store = bus_attr_store,
};
--- 2.6.24-rc7-const.orig/drivers/base/class.c
+++ 2.6.24-rc7-const/drivers/base/class.c
@@ -60,7 +60,7 @@ static void class_release(struct kobject
"be careful\n", class->name);
}
-static struct sysfs_ops class_sysfs_ops = {
+static const struct sysfs_ops class_sysfs_ops = {
.show = class_attr_show,
.store = class_attr_store,
};
@@ -299,7 +299,7 @@ class_device_attr_store(struct kobject *
return ret;
}
-static struct sysfs_ops class_dev_sysfs_ops = {
+static const struct sysfs_ops class_dev_sysfs_ops = {
.show = class_device_attr_show,
.store = class_device_attr_store,
};
--- 2.6.24-rc7-const.orig/drivers/base/core.c
+++ 2.6.24-rc7-const/drivers/base/core.c
@@ -76,7 +76,7 @@ dev_attr_store(struct kobject * kobj, st
return ret;
}
-static struct sysfs_ops dev_sysfs_ops = {
+static const struct sysfs_ops dev_sysfs_ops = {
.show = dev_attr_show,
.store = dev_attr_store,
};
--- 2.6.24-rc7-const.orig/drivers/base/sys.c
+++ 2.6.24-rc7-const/drivers/base/sys.c
@@ -55,7 +55,7 @@ sysdev_store(struct kobject * kobj, stru
return -EIO;
}
-static struct sysfs_ops sysfs_ops = {
+static const struct sysfs_ops sysfs_ops = {
.show = sysdev_show,
.store = sysdev_store,
};
@@ -105,7 +105,7 @@ static ssize_t sysdev_class_store(struct
return -EIO;
}
-static struct sysfs_ops sysfs_class_ops = {
+static const struct sysfs_ops sysfs_class_ops = {
.show = sysdev_class_show,
.store = sysdev_class_store,
};
--- 2.6.24-rc7-const.orig/drivers/cpufreq/cpufreq.c
+++ 2.6.24-rc7-const/drivers/cpufreq/cpufreq.c
@@ -694,7 +694,7 @@ static void cpufreq_sysfs_release(struct
complete(&policy->kobj_unregister);
}
-static struct sysfs_ops sysfs_ops = {
+static const struct sysfs_ops sysfs_ops = {
.show = show,
.store = store,
};
--- 2.6.24-rc7-const.orig/drivers/cpuidle/sysfs.c
+++ 2.6.24-rc7-const/drivers/cpuidle/sysfs.c
@@ -186,7 +186,7 @@ static ssize_t cpuidle_store(struct kobj
return ret;
}
-static struct sysfs_ops cpuidle_sysfs_ops = {
+static const struct sysfs_ops cpuidle_sysfs_ops = {
.show = cpuidle_show,
.store = cpuidle_store,
};
@@ -258,7 +258,7 @@ static ssize_t cpuidle_state_show(struct
return ret;
}
-static struct sysfs_ops cpuidle_state_sysfs_ops = {
+static const struct sysfs_ops cpuidle_state_sysfs_ops = {
.show = cpuidle_state_show,
};
--- 2.6.24-rc7-const.orig/drivers/pci/pci-driver.c
+++ 2.6.24-rc7-const/drivers/pci/pci-driver.c
@@ -388,7 +388,7 @@ pci_driver_attr_store(struct kobject * k
return ret;
}
-static struct sysfs_ops pci_driver_sysfs_ops = {
+static const struct sysfs_ops pci_driver_sysfs_ops = {
.show = pci_driver_attr_show,
.store = pci_driver_attr_store,
};
--- 2.6.24-rc7-const.orig/fs/partitions/check.c
+++ 2.6.24-rc7-const/fs/partitions/check.c
@@ -228,7 +228,7 @@ part_attr_store(struct kobject * kobj, s
return ret;
}
-static struct sysfs_ops part_sysfs_ops = {
+static const struct sysfs_ops part_sysfs_ops = {
.show = part_attr_show,
.store = part_attr_store,
};
--- 2.6.24-rc7-const.orig/fs/sysfs/file.c
+++ 2.6.24-rc7-const/fs/sysfs/file.c
@@ -52,7 +52,7 @@ subsys_attr_store(struct kobject * kobj,
return ret;
}
-static struct sysfs_ops subsys_sysfs_ops = {
+static const struct sysfs_ops subsys_sysfs_ops = {
.show = subsys_attr_show,
.store = subsys_attr_store,
};
@@ -79,7 +79,7 @@ struct sysfs_buffer {
size_t count;
loff_t pos;
char * page;
- struct sysfs_ops * ops;
+ const struct sysfs_ops * ops;
struct mutex mutex;
int needs_read_fill;
int event;
@@ -101,7 +101,7 @@ static int fill_read_buffer(struct dentr
{
struct sysfs_dirent *attr_sd = dentry->d_fsdata;
struct kobject *kobj = attr_sd->s_parent->s_dir.kobj;
- struct sysfs_ops * ops = buffer->ops;
+ const struct sysfs_ops * ops = buffer->ops;
int ret = 0;
ssize_t count;
@@ -220,7 +220,7 @@ flush_write_buffer(struct dentry * dentr
{
struct sysfs_dirent *attr_sd = dentry->d_fsdata;
struct kobject *kobj = attr_sd->s_parent->s_dir.kobj;
- struct sysfs_ops * ops = buffer->ops;
+ const struct sysfs_ops * ops = buffer->ops;
int rc;
/* need attr_sd for attr and ops, its parent for kobj */
@@ -355,7 +355,7 @@ static int sysfs_open_file(struct inode
struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;
struct kobject *kobj = attr_sd->s_parent->s_dir.kobj;
struct sysfs_buffer * buffer;
- struct sysfs_ops * ops = NULL;
+ const struct sysfs_ops * ops = NULL;
int error;
/* need attr_sd for attr and ops, its parent for kobj */
--- 2.6.24-rc7-const.orig/include/linux/kobject.h
+++ 2.6.24-rc7-const/include/linux/kobject.h
@@ -101,7 +101,7 @@ extern char * kobject_get_path(struct ko
struct kobj_type {
void (*release)(struct kobject *);
- struct sysfs_ops * sysfs_ops;
+ const struct sysfs_ops *sysfs_ops;
struct attribute *const *default_attrs;
};
--- 2.6.24-rc7-const.orig/kernel/params.c
+++ 2.6.24-rc7-const/kernel/params.c
@@ -673,7 +673,7 @@ static ssize_t module_attr_store(struct
return ret;
}
-static struct sysfs_ops module_sysfs_ops = {
+static const struct sysfs_ops module_sysfs_ops = {
.show = module_attr_show,
.store = module_attr_store,
};
@@ -730,14 +730,6 @@ static int __init param_sysfs_init(void)
return 0;
}
subsys_initcall(param_sysfs_init);
-
-#else
-#if 0
-static struct sysfs_ops module_sysfs_ops = {
- .show = NULL,
- .store = NULL,
-};
-#endif
#endif
EXPORT_SYMBOL(param_set_byte);
--- 2.6.24-rc7-const.orig/mm/slub.c
+++ 2.6.24-rc7-const/mm/slub.c
@@ -3940,7 +3940,7 @@ static ssize_t slab_attr_store(struct ko
return err;
}
-static struct sysfs_ops slab_sysfs_ops = {
+static const struct sysfs_ops slab_sysfs_ops = {
.show = slab_attr_show,
.store = slab_attr_store,
};
--
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