u-boot/include/linux/compat.h
Masahiro Yamada 6b9f9eadff linux_compat: handle __GFP_ZERO in kmalloc()
Currently, kzalloc() returns zero-filled memory, while kmalloc()
simply ignores the second argument and never fills the memory
area with zeros.

I want kmalloc(size, __GFP_ZERO) to behave as kzalloc() does,
which will make it easier to add more memory allocator variants.

With the introduction of __GFP_ZERO flag, going forward, kzmalloc()
variants can fall back to kmalloc() enabling the __GFP_ZERO flag.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
2015-07-22 07:30:44 -06:00

344 lines
9.2 KiB
C

#ifndef _LINUX_COMPAT_H_
#define _LINUX_COMPAT_H_
#include <malloc.h>
#include <linux/types.h>
#include <linux/err.h>
struct unused {};
typedef struct unused unused_t;
struct p_current{
int pid;
};
extern struct p_current *current;
#define ndelay(x) udelay(1)
#define dev_dbg(dev, fmt, args...) \
debug(fmt, ##args)
#define dev_vdbg(dev, fmt, args...) \
debug(fmt, ##args)
#define dev_info(dev, fmt, args...) \
printf(fmt, ##args)
#define dev_err(dev, fmt, args...) \
printf(fmt, ##args)
#define printk printf
#define printk_once printf
#define KERN_EMERG
#define KERN_ALERT
#define KERN_CRIT
#define KERN_ERR
#define KERN_WARNING
#define KERN_NOTICE
#define KERN_INFO
#define KERN_DEBUG
#define GFP_ATOMIC ((gfp_t) 0)
#define GFP_KERNEL ((gfp_t) 0)
#define GFP_NOFS ((gfp_t) 0)
#define GFP_USER ((gfp_t) 0)
#define __GFP_NOWARN ((gfp_t) 0)
#define __GFP_ZERO ((__force gfp_t)0x8000u) /* Return zeroed page on success */
void *kmalloc(size_t size, int flags);
static inline void *kzalloc(size_t size, gfp_t flags)
{
return kmalloc(size, flags | __GFP_ZERO);
}
#define vmalloc(size) kmalloc(size, 0)
#define __vmalloc(size, flags, pgsz) kmalloc(size, flags)
static inline void *vzalloc(unsigned long size)
{
return kzalloc(size, 0);
}
#define kfree(ptr) free(ptr)
#define vfree(ptr) free(ptr)
struct kmem_cache { int sz; };
struct kmem_cache *get_mem(int element_sz);
#define kmem_cache_create(a, sz, c, d, e) get_mem(sz)
void *kmem_cache_alloc(struct kmem_cache *obj, int flag);
#define kmem_cache_free(obj, size) free(size)
#define kmem_cache_destroy(obj) free(obj)
#define DECLARE_WAITQUEUE(...) do { } while (0)
#define add_wait_queue(...) do { } while (0)
#define remove_wait_queue(...) do { } while (0)
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
#ifndef BUG
#define BUG() do { \
printf("U-Boot BUG at %s:%d!\n", __FILE__, __LINE__); \
} while (0)
#define BUG_ON(condition) do { if (condition) BUG(); } while(0)
#endif /* BUG */
#define WARN_ON(x) if (x) {printf("WARNING in %s line %d\n" \
, __FILE__, __LINE__); }
#define PAGE_SIZE 4096
/* drivers/char/random.c */
#define get_random_bytes(...)
/* include/linux/leds.h */
struct led_trigger {};
#define DEFINE_LED_TRIGGER(x) static struct led_trigger *x;
enum led_brightness {
LED_OFF = 0,
LED_HALF = 127,
LED_FULL = 255,
};
static inline void led_trigger_register_simple(const char *name,
struct led_trigger **trigger) {}
static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {}
static inline void led_trigger_event(struct led_trigger *trigger,
enum led_brightness event) {}
/* include/linux/log2.h */
static inline int is_power_of_2(unsigned long n)
{
return (n != 0 && ((n & (n - 1)) == 0));
}
/* uapi/linux/limits.h */
#define XATTR_LIST_MAX 65536 /* size of extended attribute namelist (64k) */
/**
* The type used for indexing onto a disc or disc partition.
*
* Linux always considers sectors to be 512 bytes long independently
* of the devices real block size.
*
* blkcnt_t is the type of the inode's block count.
*/
#ifdef CONFIG_LBDAF
typedef u64 sector_t;
typedef u64 blkcnt_t;
#else
typedef unsigned long sector_t;
typedef unsigned long blkcnt_t;
#endif
#define ENOTSUPP 524 /* Operation is not supported */
/* module */
#define THIS_MODULE 0
#define try_module_get(...) 1
#define module_put(...) do { } while (0)
#define module_init(...)
#define module_exit(...)
#define EXPORT_SYMBOL(...)
#define EXPORT_SYMBOL_GPL(...)
#define module_param(...)
#define module_param_call(...)
#define MODULE_PARM_DESC(...)
#define MODULE_VERSION(...)
#define MODULE_DESCRIPTION(...)
#define MODULE_AUTHOR(...)
#define MODULE_LICENSE(...)
#define MODULE_ALIAS(...)
#define __module_get(...)
/* character device */
#define MKDEV(...) 0
#define MAJOR(dev) 0
#define MINOR(dev) 0
#define alloc_chrdev_region(...) 0
#define unregister_chrdev_region(...)
#define class_create(...) __builtin_return_address(0)
#define class_create_file(...) 0
#define class_remove_file(...)
#define class_destroy(...)
#define misc_register(...) 0
#define misc_deregister(...)
#define blocking_notifier_call_chain(...) 0
#define __initdata
#define late_initcall(...)
#define dev_set_name(...) do { } while (0)
#define device_register(...) 0
#define volume_sysfs_init(...) 0
#define volume_sysfs_close(...) do { } while (0)
#define init_waitqueue_head(...) do { } while (0)
#define wait_event_interruptible(...) 0
#define wake_up_interruptible(...) do { } while (0)
#define print_hex_dump(...) do { } while (0)
#define dump_stack(...) do { } while (0)
#define task_pid_nr(x) 0
#define set_freezable(...) do { } while (0)
#define try_to_freeze(...) 0
#define set_current_state(...) do { } while (0)
#define kthread_should_stop(...) 0
#define schedule() do { } while (0)
#define setup_timer(timer, func, data) do {} while (0)
#define del_timer_sync(timer) do {} while (0)
#define schedule_work(work) do {} while (0)
#define INIT_WORK(work, fun) do {} while (0)
struct work_struct {};
unsigned long copy_from_user(void *dest, const void *src,
unsigned long count);
typedef unused_t spinlock_t;
typedef int wait_queue_head_t;
#define spin_lock_init(lock) do {} while (0)
#define spin_lock(lock) do {} while (0)
#define spin_unlock(lock) do {} while (0)
#define spin_lock_irqsave(lock, flags) do { debug("%lu\n", flags); } while (0)
#define spin_unlock_irqrestore(lock, flags) do { flags = 0; } while (0)
#define DEFINE_MUTEX(...)
#define mutex_init(...)
#define mutex_lock(...)
#define mutex_unlock(...)
#define init_rwsem(...) do { } while (0)
#define down_read(...) do { } while (0)
#define down_write(...) do { } while (0)
#define down_write_trylock(...) 1
#define up_read(...) do { } while (0)
#define up_write(...) do { } while (0)
#define cond_resched() do { } while (0)
#define yield() do { } while (0)
#define __init
#define __exit
#define __devinit
#define __devinitdata
#define __devinitconst
#define kthread_create(...) __builtin_return_address(0)
#define kthread_stop(...) do { } while (0)
#define wake_up_process(...) do { } while (0)
struct rw_semaphore { int i; };
#define down_write(...) do { } while (0)
#define up_write(...) do { } while (0)
#define down_read(...) do { } while (0)
#define up_read(...) do { } while (0)
struct device {
struct device *parent;
struct class *class;
dev_t devt; /* dev_t, creates the sysfs "dev" */
void (*release)(struct device *dev);
/* This is used from drivers/usb/musb-new subsystem only */
void *driver_data; /* data private to the driver */
void *device_data; /* data private to the device */
};
struct mutex { int i; };
struct kernel_param { int i; };
struct cdev {
int owner;
dev_t dev;
};
#define cdev_init(...) do { } while (0)
#define cdev_add(...) 0
#define cdev_del(...) do { } while (0)
#define prandom_u32(...) 0
typedef struct {
uid_t val;
} kuid_t;
typedef struct {
gid_t val;
} kgid_t;
/* from include/linux/types.h */
/**
* struct callback_head - callback structure for use with RCU and task_work
* @next: next update requests in a list
* @func: actual update function to call after the grace period.
*/
struct callback_head {
struct callback_head *next;
void (*func)(struct callback_head *head);
};
#define rcu_head callback_head
enum writeback_sync_modes {
WB_SYNC_NONE, /* Don't wait on anything */
WB_SYNC_ALL, /* Wait on every mapping */
};
/* from include/linux/writeback.h */
/*
* A control structure which tells the writeback code what to do. These are
* always on the stack, and hence need no locking. They are always initialised
* in a manner such that unspecified fields are set to zero.
*/
struct writeback_control {
long nr_to_write; /* Write this many pages, and decrement
this for each page written */
long pages_skipped; /* Pages which were not written */
/*
* For a_ops->writepages(): if start or end are non-zero then this is
* a hint that the filesystem need only write out the pages inside that
* byterange. The byte at `end' is included in the writeout request.
*/
loff_t range_start;
loff_t range_end;
enum writeback_sync_modes sync_mode;
unsigned for_kupdate:1; /* A kupdate writeback */
unsigned for_background:1; /* A background writeback */
unsigned tagged_writepages:1; /* tag-and-write to avoid livelock */
unsigned for_reclaim:1; /* Invoked from the page allocator */
unsigned range_cyclic:1; /* range_start is cyclic */
unsigned for_sync:1; /* sync(2) WB_SYNC_ALL writeback */
};
void *kmemdup(const void *src, size_t len, gfp_t gfp);
typedef int irqreturn_t;
struct timer_list {};
struct notifier_block {};
typedef unsigned long dmaaddr_t;
#define pm_runtime_get_sync(dev) do {} while (0)
#define pm_runtime_put(dev) do {} while (0)
#define pm_runtime_put_sync(dev) do {} while (0)
#define pm_runtime_use_autosuspend(dev) do {} while (0)
#define pm_runtime_set_autosuspend_delay(dev, delay) do {} while (0)
#define pm_runtime_enable(dev) do {} while (0)
#define IRQ_NONE 0
#define IRQ_HANDLED 1
#define IRQ_WAKE_THREAD 2
#define dev_set_drvdata(dev, data) do {} while (0)
#define enable_irq(...)
#define disable_irq(...)
#define disable_irq_wake(irq) do {} while (0)
#define enable_irq_wake(irq) -EINVAL
#define free_irq(irq, data) do {} while (0)
#define request_irq(nr, f, flags, nm, data) 0
#endif