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mm/damon/sysfs: move unsigned long range directory to common module

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The implementation of unsigned long type range directories can be reused
by multiple DAMON sysfs directories including those for DAMON-based
Operation Schemes and the range of number of monitoring regions.  Move the
code into the files for DAMON sysfs common logics.

Link: https://lkml.kernel.org/r/20221026225943.100429-9-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2022-10-26 22:59:39 +00:00 committed by Andrew Morton
parent 3924059591
commit d332fe11de
3 changed files with 109 additions and 100 deletions
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96
mm/damon/sysfs-common.c
View File

@ -5,7 +5,103 @@
* Author: SeongJae Park <sj@kernel.org>
*/
#include <linux/slab.h>
#include "sysfs-common.h"
DEFINE_MUTEX(damon_sysfs_lock);
/*
* unsigned long range directory
*/
struct damon_sysfs_ul_range *damon_sysfs_ul_range_alloc(
unsigned long min,
unsigned long max)
{
struct damon_sysfs_ul_range *range = kmalloc(sizeof(*range),
GFP_KERNEL);
if (!range)
return NULL;
range->kobj = (struct kobject){};
range->min = min;
range->max = max;
return range;
}
static ssize_t min_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
return sysfs_emit(buf, "%lu\n", range->min);
}
static ssize_t min_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
unsigned long min;
int err;
err = kstrtoul(buf, 0, &min);
if (err)
return err;
range->min = min;
return count;
}
static ssize_t max_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
return sysfs_emit(buf, "%lu\n", range->max);
}
static ssize_t max_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
unsigned long max;
int err;
err = kstrtoul(buf, 0, &max);
if (err)
return err;
range->max = max;
return count;
}
void damon_sysfs_ul_range_release(struct kobject *kobj)
{
kfree(container_of(kobj, struct damon_sysfs_ul_range, kobj));
}
static struct kobj_attribute damon_sysfs_ul_range_min_attr =
__ATTR_RW_MODE(min, 0600);
static struct kobj_attribute damon_sysfs_ul_range_max_attr =
__ATTR_RW_MODE(max, 0600);
static struct attribute *damon_sysfs_ul_range_attrs[] = {
&damon_sysfs_ul_range_min_attr.attr,
&damon_sysfs_ul_range_max_attr.attr,
NULL,
};
ATTRIBUTE_GROUPS(damon_sysfs_ul_range);
struct kobj_type damon_sysfs_ul_range_ktype = {
.release = damon_sysfs_ul_range_release,
.sysfs_ops = &kobj_sysfs_ops,
.default_groups = damon_sysfs_ul_range_groups,
};

13
mm/damon/sysfs-common.h
View File

@ -9,3 +9,16 @@
#include <linux/kobject.h>
extern struct mutex damon_sysfs_lock;
struct damon_sysfs_ul_range {
struct kobject kobj;
unsigned long min;
unsigned long max;
};
struct damon_sysfs_ul_range *damon_sysfs_ul_range_alloc(
unsigned long min,
unsigned long max);
void damon_sysfs_ul_range_release(struct kobject *kobj);
extern struct kobj_type damon_sysfs_ul_range_ktype;

100
mm/damon/sysfs.c
View File

@ -11,106 +11,6 @@
#include "sysfs-common.h"
/*
* unsigned long range directory
*/
struct damon_sysfs_ul_range {
struct kobject kobj;
unsigned long min;
unsigned long max;
};
static struct damon_sysfs_ul_range *damon_sysfs_ul_range_alloc(
unsigned long min,
unsigned long max)
{
struct damon_sysfs_ul_range *range = kmalloc(sizeof(*range),
GFP_KERNEL);
if (!range)
return NULL;
range->kobj = (struct kobject){};
range->min = min;
range->max = max;
return range;
}
static ssize_t min_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
return sysfs_emit(buf, "%lu\n", range->min);
}
static ssize_t min_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
unsigned long min;
int err;
err = kstrtoul(buf, 0, &min);
if (err)
return err;
range->min = min;
return count;
}
static ssize_t max_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
return sysfs_emit(buf, "%lu\n", range->max);
}
static ssize_t max_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct damon_sysfs_ul_range *range = container_of(kobj,
struct damon_sysfs_ul_range, kobj);
unsigned long max;
int err;
err = kstrtoul(buf, 0, &max);
if (err)
return err;
range->max = max;
return count;
}
static void damon_sysfs_ul_range_release(struct kobject *kobj)
{
kfree(container_of(kobj, struct damon_sysfs_ul_range, kobj));
}
static struct kobj_attribute damon_sysfs_ul_range_min_attr =
__ATTR_RW_MODE(min, 0600);
static struct kobj_attribute damon_sysfs_ul_range_max_attr =
__ATTR_RW_MODE(max, 0600);
static struct attribute *damon_sysfs_ul_range_attrs[] = {
&damon_sysfs_ul_range_min_attr.attr,
&damon_sysfs_ul_range_max_attr.attr,
NULL,
};
ATTRIBUTE_GROUPS(damon_sysfs_ul_range);
static struct kobj_type damon_sysfs_ul_range_ktype = {
.release = damon_sysfs_ul_range_release,
.sysfs_ops = &kobj_sysfs_ops,
.default_groups = damon_sysfs_ul_range_groups,
};
/*
* schemes/stats directory
*/