[fio.git] / os / syslet.h

#ifndef _SYSLET_H_
#define _SYSLET_H_

#include "kcompat.h"

struct syslet_frame {
	u64 ip;
	u64 sp;
};

struct syslet_args {
	u64 ring_ptr;
	u64 caller_data;
	struct syslet_frame frame;
};

struct syslet_completion {
	u64 status;
	u64 caller_data;
};

struct syslet_ring {
	u32 kernel_head;
	u32 user_tail;
	u32 elements;
	u32 wait_group;
	struct syslet_completion comp[0];
};

#ifdef __x86_64__
#define __NR_syslet_ring_wait	287
#elif defined __i386__
#define __NR_syslet_ring_wait	326
#endif

#define ESYSLETPENDING   132

typedef void (*syslet_return_func_t)(void);

static inline void fill_syslet_args(struct syslet_args *args,
		      struct syslet_ring *ring, uint64_t caller_data,
		      syslet_return_func_t func, void *stack)
{
	args->ring_ptr = (u64)(unsigned long)ring;
	args->caller_data = caller_data;
	args->frame.ip = (u64)(unsigned long)func;
	args->frame.sp = (u64)(unsigned long)stack;
}

#endif
Commit	Line	Data
	1	#ifndef _SYSLET_H_
	2	#define _SYSLET_H_
	3
	4	#include "kcompat.h"
	5
	6	struct syslet_frame {
	7	u64 ip;
	8	u64 sp;
	9	};
	10
	11	struct syslet_args {
	12	u64 ring_ptr;
	13	u64 caller_data;
	14	struct syslet_frame frame;
	15	};
	16
	17	struct syslet_completion {
	18	u64 status;
	19	u64 caller_data;
	20	};
	21
	22	struct syslet_ring {
	23	u32 kernel_head;
	24	u32 user_tail;
	25	u32 elements;
	26	u32 wait_group;
	27	struct syslet_completion comp[0];
	28	};
	29
	30	#ifdef __x86_64__
	31	#define __NR_syslet_ring_wait 287
	32	#elif defined __i386__
	33	#define __NR_syslet_ring_wait 326
	34	#endif
	35
	36	#define ESYSLETPENDING 132
	37
	38	typedef void (*syslet_return_func_t)(void);
	39
	40	static inline void fill_syslet_args(struct syslet_args *args,
	41	struct syslet_ring *ring, uint64_t caller_data,
	42	syslet_return_func_t func, void *stack)
	43	{
	44	args->ring_ptr = (u64)(unsigned long)ring;
	45	args->caller_data = caller_data;
	46	args->frame.ip = (u64)(unsigned long)func;
	47	args->frame.sp = (u64)(unsigned long)stack;
	48	}
	49
	50	#endif