| /linux-6.14.4/arch/riscv/boot/dts/sophgo/ |
| D | sg2042-cpus.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
8 #address-cells = <1>;
9 #size-cells = <0>;
10 timebase-frequency = <50000000>;
12 cpu-map {
260 riscv,isa-base = "rv64i";
261 riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
265 i-cache-block-size = <64>;
266 i-cache-size = <65536>;
267 i-cache-sets = <512>;
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| /linux-6.14.4/arch/riscv/boot/dts/spacemit/ |
| D | k1.dtsi | 1 // SPDX-License-Identifier: GPL-2.0 OR MIT
6 /dts-v1/;
8 #address-cells = <2>;
9 #size-cells = <2>;
14 #address-cells = <1>;
15 #size-cells = <0>;
16 timebase-frequency = <24000000>;
18 cpu-map {
55 riscv,isa-base = "rv64i";
56 riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom",
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| /linux-6.14.4/Documentation/admin-guide/device-mapper/ |
| D | cache.rst | 2 Cache title
8 dm-cache is a device mapper target written by Joe Thornber, Heinz
11 It aims to improve performance of a block device (eg, a spindle) by
15 This device-mapper solution allows us to insert this caching at
17 a thin-provisioning pool. Caching solutions that are integrated more
20 The target reuses the metadata library used in the thin-provisioning
23 The decision as to what data to migrate and when is left to a plug-in
32 Movement of the primary copy of a logical block from one
39 The origin device always contains a copy of the logical block, which
40 may be out of date or kept in sync with the copy on the cache device
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| D | writecache.rst | 6 doesn't cache reads because reads are supposed to be cached in page cache
14 1. type of the cache device - "p" or "s"
15 - p - persistent memory
16 - s - SSD
18 3. the cache device
19 4. block size (4096 is recommended; the maximum block size is the page
20 size)
25 offset from the start of cache device in 512-byte sectors
45 applicable only to persistent memory - use the FUA flag
49 applicable only to persistent memory - don't use the FUA
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| D | era.rst | 2 dm-era
8 dm-era is a target that behaves similar to the linear target. In
11 maintains the current era as a monotonically increasing 32-bit
15 partially invalidating the contents of a cache to restore cache
21 era <metadata dev> <origin dev> <block size>
26 block size block size of origin data device, granularity that is
36 ----------
43 ------------------
48 ------------------
55 <metadata block size> <#used metadata blocks>/<#total metadata blocks>
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| D | vdo.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
3 dm-vdo
6 The dm-vdo (virtual data optimizer) device mapper target provides
7 block-level deduplication, compression, and thin provisioning. As a device
20 https://github.com/dm-vdo/vdo/
25 enter or come up in read-only mode. Because read-only mode is indicative of
26 data-loss, a positive action must be taken to bring vdo out of read-only
28 prepare a read-only vdo to exit read-only mode. After running this tool,
34 inspect a vdo target's on-disk metadata. Fortunately, these tools are
35 rarely needed except by dm-vdo developers.
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| /linux-6.14.4/arch/riscv/boot/dts/sifive/ |
| D | fu540-c000.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /* Copyright (c) 2018-2019 SiFive, Inc */
4 /dts-v1/;
6 #include <dt-bindings/clock/sifive-fu540-prci.h>
9 #address-cells = <2>;
10 #size-cells = <2>;
11 compatible = "sifive,fu540-c000", "sifive,fu540";
23 #address-cells = <1>;
24 #size-cells = <0>;
28 i-cache-block-size = <64>;
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| D | fu740-c000.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
4 /dts-v1/;
6 #include <dt-bindings/clock/sifive-fu740-prci.h>
9 #address-cells = <2>;
10 #size-cells = <2>;
11 compatible = "sifive,fu740-c000", "sifive,fu740";
23 #address-cells = <1>;
24 #size-cells = <0>;
28 i-cache-block-size = <64>;
29 i-cache-sets = <128>;
[all …]
|
| /linux-6.14.4/Documentation/admin-guide/ |
| D | bcache.rst | 2 A block layer cache (bcache)
6 nice if you could use them as cache... Hence bcache.
11 This is the git repository of bcache-tools:
12 https://git.kernel.org/pub/scm/linux/kernel/git/colyli/bcache-tools.git/
17 It's designed around the performance characteristics of SSDs - it only allocates
18 in erase block sized buckets, and it uses a hybrid btree/log to track cached
19 extents (which can be anywhere from a single sector to the bucket size). It's
20 designed to avoid random writes at all costs; it fills up an erase block
25 great lengths to protect your data - it reliably handles unclean shutdown. (It
29 Writeback caching can use most of the cache for buffering writes - writing
[all …]
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| /linux-6.14.4/Documentation/devicetree/bindings/riscv/ |
| D | cpus.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RISC-V CPUs
10 - Paul Walmsley <[email protected]>
11 - Palmer Dabbelt <[email protected]>
12 - Conor Dooley <[email protected]>
15 This document uses some terminology common to the RISC-V community
19 mandated by the RISC-V ISA: a PC and some registers. This
27 - $ref: /schemas/cpu.yaml#
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| /linux-6.14.4/fs/btrfs/ |
| D | block-group.c | 1 // SPDX-License-Identifier: GPL-2.0
7 #include "block-group.h"
8 #include "space-info.h"
9 #include "disk-io.h"
10 #include "free-space-cache.h"
11 #include "free-space-tree.h"
14 #include "ref-verify.h"
16 #include "tree-log.h"
17 #include "delalloc-space.h"
23 #include "extent-tree.h"
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| D | block-group.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
16 #include "free-space-cache.h"
33 /* 0 < size <= 128K */
35 /* 128K < size <= 8M */
37 /* 8M < size < BG_LENGTH */
75 /* Block group flags set at runtime */
84 /* Does the block group need to be added to the free space tree? */
86 /* Indicate that the block group is placed on a sequential zone */
89 * Indicate that block group is in the list of new block groups of a
132 * The last committed used bytes of this block group, if the above @used
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| /linux-6.14.4/fs/squashfs/ |
| D | file.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Squashfs - a compressed read only filesystem for Linux
14 * compressed fragment block (tail-end packed block). The compressed size
15 * of each datablock is stored in a block list contained within the
19 * larger), the code implements an index cache that caches the mapping from
20 * block index to datablock location on disk.
22 * The index cache allows Squashfs to handle large files (up to 1.75 TiB) while
23 * retaining a simple and space-efficient block list on disk. The cache
26 * The index cache is designed to be memory efficient, and by default uses
45 * Locate cache slot in range [offset, index] for specified inode. If
[all …]
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| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "SquashFS 4.0 - Squashed file system support"
4 depends on BLOCK
7 Read-Only File System). Squashfs is a highly compressed read-only
11 Block sizes greater than 4K are supported up to a maximum of 1 Mbytes
12 (default block size 128K). SquashFS 4.0 supports 64 bit filesystems
16 Squashfs is intended for general read-only filesystem use, for
19 and tools are available from github.com/plougher/squashfs-tools.
35 intermediate buffer and then memcopied it into the page cache.
37 the page cache.
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| /linux-6.14.4/drivers/mtd/ |
| D | mtdblock.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Direct MTD block device access
5 * Copyright © 1999-2010 David Woodhouse <[email protected]>
6 * Copyright © 2000-2003 Nicolas Pitre <[email protected]>
35 * Cache stuff...
38 * buffer cache can handle, we must implement read-modify-write on flash
39 * sectors for each block write requests. To avoid over-erasing flash sectors
40 * and to speed things up, we locally cache a whole flash sector while it is
52 * First, let's erase the flash block. in erase_write()
61 pos, len, mtd->name); in erase_write()
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| /linux-6.14.4/arch/riscv/boot/dts/microchip/ |
| D | mpfs.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /* Copyright (c) 2020-2021 Microchip Technology Inc */
4 /dts-v1/;
5 #include "dt-bindings/clock/microchip,mpfs-clock.h"
8 #address-cells = <2>;
9 #size-cells = <2>;
14 #address-cells = <1>;
15 #size-cells = <0>;
16 timebase-frequency = <1000000>;
21 i-cache-block-size = <64>;
[all …]
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| /linux-6.14.4/fs/affs/ |
| D | file.c | 1 // SPDX-License-Identifier: GPL-2.0
5 * (c) 1996 Hans-Joachim Widmaier - Rewritten
7 * (C) 1993 Ray Burr - Modified for Amiga FFS filesystem.
11 * (C) 1991 Linus Torvalds - minix filesystem
27 inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); in affs_file_open()
28 atomic_inc(&AFFS_I(inode)->i_opencnt); in affs_file_open()
36 inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); in affs_file_release()
38 if (atomic_dec_and_test(&AFFS_I(inode)->i_opencnt)) { in affs_file_release()
40 if (inode->i_size != AFFS_I(inode)->mmu_private) in affs_file_release()
52 struct super_block *sb = inode->i_sb; in affs_grow_extcache()
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| /linux-6.14.4/Documentation/devicetree/bindings/cache/ |
| D | sifive,ccache0.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/cache/sifive,ccache0.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: SiFive Composable Cache Controller
11 - Paul Walmsley <[email protected]>
14 The SiFive Composable Cache Controller is used to provide access to fast copies
15 of memory for masters in a Core Complex. The Composable Cache Controller also
16 acts as directory-based coherency manager.
24 - sifive,ccache0
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| D | starfive,jh8100-starlink-cache.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/cache/starfive,jh8100-starlink-cache.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: StarFive StarLink Cache Controller
10 - Joshua Yeong <[email protected]>
13 StarFive's StarLink Cache Controller manages the L3 cache shared between
14 clusters of CPU cores. The cache driver enables RISC-V non-standard cache
15 management as an alternative to instructions in the RISC-V Zicbom extension.
18 - $ref: /schemas/cache-controller.yaml#
[all …]
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| /linux-6.14.4/fs/nilfs2/ |
| D | btnode.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * NILFS B-tree node cache
5 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
15 #include <linux/backing-dev.h>
25 * nilfs_init_btnc_inode - initialize B-tree node cache inode
28 * nilfs_init_btnc_inode() sets up an inode for B-tree node cache.
34 btnc_inode->i_mode = S_IFREG; in nilfs_init_btnc_inode()
35 ii->i_flags = 0; in nilfs_init_btnc_inode()
36 memset(&ii->i_bmap_data, 0, sizeof(struct nilfs_bmap)); in nilfs_init_btnc_inode()
37 mapping_set_gfp_mask(btnc_inode->i_mapping, GFP_NOFS); in nilfs_init_btnc_inode()
[all …]
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| /linux-6.14.4/arch/powerpc/kernel/ |
| D | cacheinfo.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Processor cache information made available to userspace via sysfs;
26 /* per-cpu object for tracking:
27 * - a "cache" kobject for the top-level directory
28 * - a list of "index" objects representing the cpu's local cache hierarchy
31 struct kobject *kobj; /* bare (not embedded) kobject for cache
36 /* "index" object: each cpu's cache directory has an index
37 * subdirectory corresponding to a cache object associated with the
43 struct cache *cache; member
47 * cache type */
[all …]
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| /linux-6.14.4/drivers/md/ |
| D | dm-cache-target.c | 1 // SPDX-License-Identifier: GPL-2.0-only
9 #include "dm-bio-prison-v2.h"
10 #include "dm-bio-record.h"
11 #include "dm-cache-metadata.h"
12 #include "dm-io-tracker.h"
13 #include "dm-cache-background-tracker.h"
15 #include <linux/dm-io.h>
16 #include <linux/dm-kcopyd.h>
25 #define DM_MSG_PREFIX "cache"
28 "A percentage of time allocated for copying to and/or from cache");
[all …]
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| /linux-6.14.4/arch/riscv/boot/dts/thead/ |
| D | th1520.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
7 #include <dt-bindings/interrupt-controller/irq.h>
8 #include <dt-bindings/clock/thead,th1520-clk-ap.h>
12 #address-cells = <2>;
13 #size-cells = <2>;
16 #address-cells = <1>;
17 #size-cells = <0>;
18 timebase-frequency = <3000000>;
24 riscv,isa-base = "rv64i";
25 riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
[all …]
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| /linux-6.14.4/Documentation/filesystems/ |
| D | squashfs.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 Squashfs is a compressed read-only filesystem for Linux.
11 minimise data overhead. Block sizes greater than 4K are supported up to a
12 maximum of 1Mbytes (default block size 128K).
14 Squashfs is intended for general read-only filesystem use, for archival
16 block device/memory systems (e.g. embedded systems) where low overhead is
19 Mailing list (kernel code): linux-[email protected]
20 Web site: github.com/plougher/squashfs-tools
23 ----------------------
30 Max filesystem size 2^64 256 MiB
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| /linux-6.14.4/arch/powerpc/include/uapi/asm/ |
| D | auxvec.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
7 * the cache block size is, so it can use the dcbz instruction safely.
16 * sake :-)
21 * AT_*CACHEBSIZE above represent the cache *block* size which is
22 * the size that is affected by the cache management instructions.
24 * It doesn't nececssarily matches the cache *line* size which is
26 * be different for the different cache levels.
29 * about the caches, in the form of two entry per cache type,
30 * one entry containing the cache size in bytes, and the other
31 * containing the cache line size in bytes in the bottom 16 bits
[all …]
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