07fe6a43d6
This is more accurate to what they are, and will make defining library dependencies much simpler. This change in directory does not affect the final placement of naming of libraries at the end of time. Change-Id: Ic48a9233dff564e39ce357a9ea0a111ea2b6414b Signed-off-by: Seth Howell <seth.howell@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/465454 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SPDK_VBDEV_DELAY_H
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#define SPDK_VBDEV_DELAY_H
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#include "spdk/stdinc.h"
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#include "spdk/bdev.h"
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#include "spdk/bdev_module.h"
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enum delay_io_type {
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DELAY_AVG_READ,
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DELAY_P99_READ,
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DELAY_AVG_WRITE,
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DELAY_P99_WRITE,
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DELAY_NONE
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};
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/**
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* Create new delay bdev.
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*
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* \param bdev_name Bdev on which delay vbdev will be created.
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* \param vbdev_name Name of the delay bdev.
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* \param avg_read_latency Desired typical read latency.
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* \param p99_read_latency Desired p99 read latency
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* \param avg_write_latency Desired typical write latency.
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* \param p99_write_latency Desired p99 write latency
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* \return 0 on success, other on failure.
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*/
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int create_delay_disk(const char *bdev_name, const char *vbdev_name, uint64_t avg_read_latency,
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uint64_t p99_read_latency, uint64_t avg_write_latency, uint64_t p99_write_latency);
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/**
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* Delete delay bdev.
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*
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* \param bdev Pointer to delay bdev.
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* \param cb_fn Function to call after deletion.
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* \param cb_arg Argument to pass to cb_fn.
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*/
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void delete_delay_disk(struct spdk_bdev *bdev, spdk_bdev_unregister_cb cb_fn,
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void *cb_arg);
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/**
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* Update one of the latency values for a given delay bdev.
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*
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* \param delay_name The name of the delay bdev
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* \param latency_us The new latency value, in microseconds
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* \param type a valid value from the delay_io_type enum
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* \return 0 on success, -ENODEV if the bdev cannot be found, and -EINVAL if the bdev is not a delay device.
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*/
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int vbdev_delay_update_latency_value(char *delay_name, uint64_t latency_us,
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enum delay_io_type type);
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#endif /* SPDK_VBDEV_DELAY_H */
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