66fe5f75bb
Adds ability to send trim commands to FTL - only 4MiB aligned requests (both for offset and length of request) will be processed. During a trim operation an L2P page (containing 1024 4B entries, 1 per user LBA; which is where the 4MiB alignment comes from) will be marked as unmapped. After this point any L2P access to that page will actually set the entries themselves as FTL_ADDR_INVALID. This is done to make the trim as fast as possible, since for large requests it's probable that most of the L2P pages aren't actually in DRAM. Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com> Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Change-Id: I4a04ee9498a2a6939af31b06f2e45d2b7cccbf19 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13378 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*/
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#ifndef FTL_DEBUG_H
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#define FTL_DEBUG_H
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#include "ftl_internal.h"
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#include "ftl_band.h"
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#include "ftl_core.h"
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#if defined(DEBUG)
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void ftl_band_validate_md(struct ftl_band *band, ftl_band_validate_md_cb cb);
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void ftl_dev_dump_bands(struct spdk_ftl_dev *dev);
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static inline void
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ftl_debug_inject_unmap_error(void)
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{
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static int unmap_no = 0;
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if (getenv("FTL_CRASH_ON_UNMAP") && unmap_no++ == 256) {
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abort();
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}
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}
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#else
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static void
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_validate_cb(void *ctx)
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{
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struct ftl_band *band = ctx;
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band->validate_cb(band, true);
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}
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static inline void
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ftl_band_validate_md(struct ftl_band *band, ftl_band_validate_md_cb cb)
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{
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/* For release builds this is a NOP operation, but should still be asynchronous to keep the behavior consistent */
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band->validate_cb = cb;
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spdk_thread_send_msg(band->dev->core_thread, _validate_cb, band);
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}
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static inline void
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ftl_dev_dump_bands(struct spdk_ftl_dev *dev)
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{
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}
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static inline void
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ftl_debug_inject_unmap_error(void)
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{
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}
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#endif
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void ftl_dev_dump_stats(const struct spdk_ftl_dev *dev);
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#endif /* FTL_DEBUG_H */
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