/home/hillier_g/checkout/most4linux/most-kernel/most-common-rt.h File Reference

Common types and definitions used in the real-time part of the MOST driver. More...

Go to the source code of this file.

Data Structures
struct	rt_spin_locked_list
Defines
#define	RT_SPIN_LOCKED_LIST(name)
#define	copy_from_user_or_kernel(err, user_info, dst, src, size)

---

Detailed Description

Common types and definitions used in the real-time part of the MOST driver.

Definition in file most-common-rt.h.

---

Define Documentation

#define RT_SPIN_LOCKED_LIST

(

name

)

Value:

struct rt_spin_locked_list name = {                                             \
        .list       = LIST_HEAD_INIT(name.list),                                    \
        .lock       = RTDM_LOCK_UNLOCKED                                            \
    }

Declare a rt_spin_locked_list variable and initialize the list elements statically

Parameters:

name

the name for the variable

Definition at line 60 of file most-common-rt.h.

#define copy_from_user_or_kernel	(	err,
		user_info,
		dst,
		src,
		size		)

Value:

do {                                                            \
        if (user_info) {                                            \
            err = rtdm_copy_from_user(user_info, dst, src, size);   \
        } else {                                                    \
            memcpy(dst, src, size);                                 \
            err = 0;                                                \
        }                                                           \
    } while (0)

If user_info is NULL, copies from kernel space to kernel space. If user_info is not NULL, copy from user space to kernel space.

src and dst must be valid pointers, i.e. checked with rtdm_read_user_ok if it's userspace.

Parameters:

	err	the variable where the return value is stored. 0 is success, a negative error value (-EFAULT) indicates an error
	user_info	the RTDM struct user_info value
	dst	the destination
	src	the source
	size	the number of bytes to copy

Definition at line 81 of file most-common-rt.h.

Referenced by most_sync_nrt_setup_rx(), and most_sync_nrt_setup_tx().

---