res_counter.h File Reference

#include <linux/cgroup.h>

Go to the source code of this file.

Data Structures
struct	res_counter

Macros
#define	RESOURCE_MAX   (unsigned long long)LLONG_MAX

Typedefs
typedef int(*	write_strategy_fn )(const char *buf, unsigned long long *val)

Enumerations
enum	{   RES_USAGE, RES_MAX_USAGE, RES_LIMIT, RES_FAILCNT,   RES_SOFT_LIMIT }

Functions
u64	res_counter_read_u64 (struct res_counter *counter, int member)
ssize_t	res_counter_read (struct res_counter *counter, int member, const char __user *buf, size_t nbytes, loff_t *pos, int(*read_strategy)(unsigned long long val, char *s))
int	res_counter_memparse_write_strategy (const char *buf, unsigned long long *res)
int	res_counter_write (struct res_counter *counter, int member, const char *buffer, write_strategy_fn write_strategy)
void	res_counter_init (struct res_counter *counter, struct res_counter *parent)
int __must_check	res_counter_charge_locked (struct res_counter *counter, unsigned long val, bool force)
int __must_check	res_counter_charge (struct res_counter *counter, unsigned long val, struct res_counter **limit_fail_at)
int	res_counter_charge_nofail (struct res_counter *counter, unsigned long val, struct res_counter **limit_fail_at)
void	res_counter_uncharge_locked (struct res_counter *counter, unsigned long val)
void	res_counter_uncharge (struct res_counter *counter, unsigned long val)
void	res_counter_uncharge_until (struct res_counter *counter, struct res_counter *top, unsigned long val)

Macro Definition Documentation

#define RESOURCE_MAX   (unsigned long long)LLONG_MAX

Definition at line 56 of file res_counter.h.

Typedef Documentation

typedef int(* write_strategy_fn)(const char *buf, unsigned long long *val)

Definition at line 77 of file res_counter.h.

Enumeration Type Documentation

anonymous enum

Enumerator:

RES_USAGE
RES_MAX_USAGE
RES_LIMIT
RES_FAILCNT
RES_SOFT_LIMIT

Definition at line 89 of file res_counter.h.

Function Documentation

int __must_check res_counter_charge	(	struct res_counter *	counter,
		unsigned long	val,
		struct res_counter **	limit_fail_at
	)

Definition at line 77 of file res_counter.c.

int __must_check res_counter_charge_locked	(	struct res_counter *	counter,
		unsigned long	val,
		bool	force
	)

Definition at line 25 of file res_counter.c.

int res_counter_charge_nofail	(	struct res_counter *	counter,
		unsigned long	val,
		struct res_counter **	limit_fail_at
	)

Definition at line 83 of file res_counter.c.

void res_counter_init	(	struct res_counter *	counter,
		struct res_counter *	parent
	)

Definition at line 17 of file res_counter.c.

int res_counter_memparse_write_strategy	(	const char *	buf,
		unsigned long long *	res
	)

Definition at line 174 of file res_counter.c.

ssize_t res_counter_read	(	struct res_counter *	counter,
		int	member,
		const char __user *	buf,
		size_t	nbytes,
		loff_t *	pos,
		int(*)(unsigned long long val, char *s)	read_strategy
	)

u64 res_counter_read_u64	(	struct res_counter *	counter,
		int	member
	)

Helpers to interact with userspace res_counter_read_u64() - returns the value of the specified member. res_counter_read/_write - put/get the specified fields from the res_counter struct to/from the user

: the counter in question : the field to work with (see RES_xxx below) : the buffer to opeate on,... : its size... : and the offset.

Definition at line 168 of file res_counter.c.

void res_counter_uncharge	(	struct res_counter *	counter,
		unsigned long	val
	)

Definition at line 113 of file res_counter.c.

void res_counter_uncharge_locked	(	struct res_counter *	counter,
		unsigned long	val
	)

Definition at line 89 of file res_counter.c.

void res_counter_uncharge_until	(	struct res_counter *	counter,
		struct res_counter *	top,
		unsigned long	val
	)

Definition at line 97 of file res_counter.c.

int res_counter_write	(	struct res_counter *	counter,
		int	member,
		const char *	buffer,
		write_strategy_fn	write_strategy
	)

Definition at line 196 of file res_counter.c.