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7b2fdd192f
It seemed like a good idea at the time, it wasn't. The code with this in place is larger and more complex for no real gain. Basically we've cleaned up the core around it so much that this no longer makes sense. Only really effects the lis3l02dq driver. Signed-off-by: Jonathan Cameron <jic23@cam.acuk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
35 lines
1.4 KiB
C
35 lines
1.4 KiB
C
/* The industrial I/O simple minimally locked ring buffer.
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*
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* Copyright (c) 2008 Jonathan Cameron
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This code is deliberately kept separate from the main industrialio I/O core
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* as it is intended that in the future a number of different software ring
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* buffer implementations will exist with different characteristics to suit
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* different applications.
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*
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* This particular one was designed for a data capture application where it was
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* particularly important that no userspace reads would interrupt the capture
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* process. To this end the ring is not locked during a read.
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*
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* Comments on this buffer design welcomed. It's far from efficient and some of
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* my understanding of the effects of scheduling on this are somewhat limited.
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* Frankly, to my mind, this is the current weak point in the industrial I/O
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* patch set.
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*/
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#ifndef _IIO_RING_SW_H_
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#define _IIO_RING_SW_H_
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#include "ring_generic.h"
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/**
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* ring_sw_access_funcs - access functions for a software ring buffer
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**/
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extern const struct iio_ring_access_funcs ring_sw_access_funcs;
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struct iio_ring_buffer *iio_sw_rb_allocate(struct iio_dev *indio_dev);
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void iio_sw_rb_free(struct iio_ring_buffer *ring);
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#endif /* _IIO_RING_SW_H_ */
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