linux/mm/cma_sysfs.c

// SPDX-License-Identifier: GPL-2.0
/*
 * CMA SysFS Interface
 *
 * Copyright (c) 2021 Minchan Kim <[email protected]>
 */

#include <linux/cma.h>
#include <linux/kernel.h>
#include <linux/slab.h>

#include "cma.h"

#define CMA_ATTR_RO(_name) …

void cma_sysfs_account_success_pages(struct cma *cma, unsigned long nr_pages)
{ … }

void cma_sysfs_account_fail_pages(struct cma *cma, unsigned long nr_pages)
{ … }

void cma_sysfs_account_release_pages(struct cma *cma, unsigned long nr_pages)
{ … }

static inline struct cma *cma_from_kobj(struct kobject *kobj)
{ … }

static ssize_t alloc_pages_success_show(struct kobject *kobj,
					struct kobj_attribute *attr, char *buf)
{ … }
CMA_ATTR_RO(…);

static ssize_t alloc_pages_fail_show(struct kobject *kobj,
				     struct kobj_attribute *attr, char *buf)
{ … }
CMA_ATTR_RO(…);

static ssize_t release_pages_success_show(struct kobject *kobj,
					  struct kobj_attribute *attr, char *buf)
{ … }
CMA_ATTR_RO(…);

static void cma_kobj_release(struct kobject *kobj)
{ … }

static struct attribute *cma_attrs[] = …;
ATTRIBUTE_GROUPS(…);

static const struct kobj_type cma_ktype = …;

static int __init cma_sysfs_init(void)
{ … }
subsys_initcall(cma_sysfs_init);