cf4e8664bb
Add a helper function bdev_reset_device_stat() to reset I/O statistics. This funciton is used for the bdev_reset_iostat RPC. We do not have any plan to use bdev_reset_device_stat() outside lib/bdev. Hence, we do not add this as a public API. Then, add a new RPC bdev_reset_iostat to reset I/O statistics of a single bdev or all bdevs. Resetting I/O statistics affects all consumers. Add a note to CHANGELOG and doc/jsonrpc.md. Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com> Change-Id: I97af09107b5c3ad1f9c19bf3cbf027457c4fbae7 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15350 Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
34 lines
984 B
C
34 lines
984 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2019 Intel Corporation.
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* All rights reserved.
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*/
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#ifndef SPDK_BDEV_INTERNAL_H
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#define SPDK_BDEV_INTERNAL_H
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#include "spdk/bdev.h"
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#define ZERO_BUFFER_SIZE 0x100000
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struct spdk_bdev;
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struct spdk_bdev_io;
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struct spdk_bdev_channel;
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struct spdk_bdev_io *bdev_channel_get_io(struct spdk_bdev_channel *channel);
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void bdev_io_init(struct spdk_bdev_io *bdev_io, struct spdk_bdev *bdev, void *cb_arg,
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spdk_bdev_io_completion_cb cb);
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void bdev_io_submit(struct spdk_bdev_io *bdev_io);
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struct spdk_bdev_io_stat *bdev_io_stat_alloc(void);
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void bdev_io_stat_free(struct spdk_bdev_io_stat *stat);
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void bdev_io_stat_dump_json(struct spdk_bdev_io_stat *stat, struct spdk_json_write_ctx *w);
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typedef void (*bdev_reset_device_stat_cb)(struct spdk_bdev *bdev, void *cb_arg, int rc);
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void bdev_reset_device_stat(struct spdk_bdev *bdev, bdev_reset_device_stat_cb cb,
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void *cb_arg);
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#endif /* SPDK_BDEV_INTERNAL_H */
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