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/OK3568_Linux_fs/kernel/Documentation/admin-guide/device-mapper/
H A Dcache.rst2 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40 may be out of date or kept in sync with the copy on the cache device
[all …]
H A Dera.rst2 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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/OK3568_Linux_fs/kernel/arch/riscv/boot/dts/sifive/
H A Dfu540-c000.dtsi1 // 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>;
[all …]
/OK3568_Linux_fs/kernel/Documentation/admin-guide/
H A Dbcache.rst2 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
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/OK3568_Linux_fs/kernel/fs/squashfs/
H A Dfile.c1 // 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
44 * Locate cache slot in range [offset, index] for specified inode. If
[all …]
H A DKconfig1 # 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
35 intermediate buffer and then memcopied it into the page cache.
37 the page cache.
45 memcopy it into the page cache.
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/OK3568_Linux_fs/buildroot/dl/stressapptest/git/
H A Dstressapptest.11 .TH STRESSAPPTEST 1 2009-10-20
3 stressapptest \- stress test application for simulating high load situations
20 .B \-A
24 .B \-C <threads>
28 .B \-d <device>
29 Add a direct write disk thread with block device (or file) 'device'.
32 .B \-f <filename>
36 .B \-F
40 .B \-i <threads>
44 .B \-l <logfile>
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/OK3568_Linux_fs/kernel/fs/affs/
H A Dfile.c1 // 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
26 inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); in affs_file_open()
27 atomic_inc(&AFFS_I(inode)->i_opencnt); in affs_file_open()
35 inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); in affs_file_release()
37 if (atomic_dec_and_test(&AFFS_I(inode)->i_opencnt)) { in affs_file_release()
39 if (inode->i_size != AFFS_I(inode)->mmu_private) in affs_file_release()
51 struct super_block *sb = inode->i_sb; in affs_grow_extcache()
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/OK3568_Linux_fs/kernel/drivers/mtd/
H A Dmtdblock.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Direct MTD block device access
5 * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
6 * Copyright © 2000-2003 Nicolas Pitre <nico@fluxnic.net>
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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/OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/riscv/
H A Dsifive-l2-cache.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/riscv/sifive-l2-cache.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: SiFive L2 Cache Controller
11 - Sagar Kadam <sagar.kadam@sifive.com>
12 - Yash Shah <yash.shah@sifive.com>
13 - Paul Walmsley <paul.walmsley@sifive.com>
16 The SiFive Level 2 Cache Controller is used to provide access to fast copies
17 of memory for masters in a Core Complex. The Level 2 Cache Controller also
[all …]
H A Dcpus.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RISC-V bindings for 'cpus' DT nodes
10 - Paul Walmsley <paul.walmsley@sifive.com>
11 - Palmer Dabbelt <palmer@sifive.com>
14 This document uses some terminology common to the RISC-V community
18 mandated by the RISC-V ISA: a PC and some registers. This
28 - items:
29 - enum:
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/OK3568_Linux_fs/kernel/arch/powerpc/kernel/
H A Dcacheinfo.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Processor cache information made available to userspace via sysfs;
27 /* per-cpu object for tracking:
28 * - a "cache" kobject for the top-level directory
29 * - a list of "index" objects representing the cpu's local cache hierarchy
32 struct kobject *kobj; /* bare (not embedded) kobject for cache
37 /* "index" object: each cpu's cache directory has an index
38 * subdirectory corresponding to a cache object associated with the
44 struct cache *cache; member
48 * cache type */
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/OK3568_Linux_fs/kernel/Documentation/filesystems/
H A Dsquashfs.rst1 .. 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: squashfs-devel@lists.sourceforge.net
23 ----------------------
30 Max filesystem size 2^64 256 MiB
31 Max file size ~ 2 TiB 16 MiB
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/OK3568_Linux_fs/kernel/drivers/md/
H A Ddm-cache-target.c8 #include "dm-bio-prison-v2.h"
9 #include "dm-bio-record.h"
10 #include "dm-cache-metadata.h"
12 #include <linux/dm-io.h>
13 #include <linux/dm-kcopyd.h>
22 #define DM_MSG_PREFIX "cache"
25 "A percentage of time allocated for copying to and/or from cache");
27 /*----------------------------------------------------------------*/
32 * oblock: index of an origin block
33 * cblock: index of a cache block
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/OK3568_Linux_fs/u-boot/drivers/mtd/nand/
H A Dbbt.c1 // SPDX-License-Identifier: GPL-2.0
6 * Boris Brezillon <boris.brezillon@free-electrons.com>
10 #define pr_fmt(fmt) "nand-bbt: " fmt
33 * nanddev_read_bbt() - Read the BBT (Bad Block Table)
35 * @block: bbt block address
36 * @update: true - get version and overwrite bbt.cache with new version;
37 * false - get bbt version only;
39 * Initialize the in-memory BBT.
43 static int nanddev_read_bbt(struct nand_device *nand, u32 block, bool update) in nanddev_read_bbt() argument
48 BITS_PER_LONG) * sizeof(*nand->bbt.cache); in nanddev_read_bbt()
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/OK3568_Linux_fs/kernel/arch/riscv/boot/dts/kendryte/
H A Dk210.dtsi1 // SPDX-License-Identifier: GPL-2.0+
6 #include <dt-bindings/clock/k210-clk.h>
10 * Although the K210 is a 64-bit CPU, the address bus is only 32-bits
13 #address-cells = <1>;
14 #size-cells = <1>;
23 * Since this is a non-ratified draft specification, the kernel does not
28 #address-cells = <1>;
29 #size-cells = <0>;
30 timebase-frequency = <7800000>;
36 mmu-type = "none";
[all …]
/OK3568_Linux_fs/kernel/drivers/rkflash/
H A Dsfc_nand_mtd_bbt.c1 // SPDX-License-Identifier: GPL-2.0
6 * Boris Brezillon <boris.brezillon@free-electrons.com>
32 * nanddev_read_bbt() - Read the BBT (Bad Block Table)
34 * @block: bbt block address
35 * @update: true - get version and overwrite bbt.cache with new version;
36 * false - get bbt version only;
38 * Initialize the in-memory BBT.
42 static int nanddev_read_bbt(struct snand_mtd_dev *nand, u32 block, bool update) in nanddev_read_bbt() argument
47 BITS_PER_LONG) * sizeof(*nand->bbt.cache); in nanddev_read_bbt()
57 if (!nand->bbt.cache) in nanddev_read_bbt()
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/OK3568_Linux_fs/u-boot/arch/arm/cpu/armv8/
H A Dcache_v8.c8 * SPDX-License-Identifier: GPL-2.0+
27 * 63-48 47-39 38-30 29-21 20-12 11-00
29 * mask page size
31 * Lv0: FF8000000000 --
46 for (i = 0; mem_map[i].size || mem_map[i].attrs; i++) in get_tcr()
47 max_addr = max(max_addr, mem_map[i].virt + mem_map[i].size); in get_tcr()
101 return (12 + 9 * (3 - level)); in level2shift()
122 pte = (u64*)gd->arch.tlb_addr; in find_pte()
131 /* PTE is no table (either invalid or block), can't traverse */ in find_pte()
145 u64 *new_table = (u64*)gd->arch.tlb_fillptr; in create_table()
[all …]
/OK3568_Linux_fs/kernel/arch/riscv/kernel/
H A Dcacheinfo.c1 // SPDX-License-Identifier: GPL-2.0-only
22 if (rv_cache_ops && rv_cache_ops->get_priv_group) in cache_get_priv_group()
23 return rv_cache_ops->get_priv_group(this_leaf); in cache_get_priv_group()
32 * that cores have a homonogenous view of the cache hierarchy. That in get_cacheinfo()
33 * happens to be the case for the current set of RISC-V systems, but in get_cacheinfo()
42 for (index = 0; index < this_cpu_ci->num_leaves; index++) { in get_cacheinfo()
43 this_leaf = this_cpu_ci->info_list + index; in get_cacheinfo()
44 if (this_leaf->level == level && this_leaf->type == type) in get_cacheinfo()
55 return this_leaf ? this_leaf->size : 0; in get_cache_size()
62 return this_leaf ? (this_leaf->ways_of_associativity << 16 | in get_cache_geometry()
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/OK3568_Linux_fs/kernel/fs/ext2/
H A Dxattr.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2001-2003 Andreas Gruenbacher <agruen@suse.de>
18 * block. If all extended attributes of an inode are identical, these
19 * inodes may share the same extended attribute block. Such situations
20 * are automatically detected by keeping a cache of recent attribute block
21 * numbers and hashes over the block's contents in memory.
24 * Extended attribute block layout:
26 * +------------------+
36 * +------------------+
38 * The block header is followed by multiple entry descriptors. These entry
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/OK3568_Linux_fs/kernel/drivers/gpu/arm/mali400/ump/linux/
H A Dump_osk_low_level_mem.c2 * Copyright (C) 2010-2014, 2016-2017 ARM Limited. All rights reserved.
8 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
31 #include <linux/dma-mapping.h>
68 address = vmf->virtual_address; in ump_cpu_page_fault_handler()
70 MSG_ERR(("Page-fault in UMP memory region caused by the CPU\n")); in ump_cpu_page_fault_handler()
85 vma_usage_tracker = (ump_vma_usage_tracker *)vma->vm_private_data; in ump_vma_open()
88 new_val = atomic_inc_return(&vma_usage_tracker->references); in ump_vma_open()
99 vma_usage_tracker = (ump_vma_usage_tracker *)vma->vm_private_data; in ump_vma_close()
102 new_val = atomic_dec_return(&vma_usage_tracker->references); in ump_vma_close()
109 descriptor = vma_usage_tracker->descriptor; in ump_vma_close()
[all …]
/OK3568_Linux_fs/kernel/fs/btrfs/
H A Dblock-group.c1 // SPDX-License-Identifier: GPL-2.0
5 #include "block-group.h"
6 #include "space-info.h"
7 #include "disk-io.h"
8 #include "free-space-cache.h"
9 #include "free-space-tree.h"
12 #include "ref-verify.h"
14 #include "tree-log.h"
15 #include "delalloc-space.h"
27 struct btrfs_balance_control *bctl = fs_info->balance_ctl; in get_restripe_target()
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/OK3568_Linux_fs/kernel/arch/powerpc/include/asm/
H A Dvdso_datapage.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
61 __u64 physicalMemorySize; /* Size of real memory(B) 0x28 */
69 __u32 dcache_size; /* L1 d-cache size 0x60 */
70 __u32 dcache_line_size; /* L1 d-cache line size 0x64 */
71 __u32 icache_size; /* L1 i-cache size 0x68 */
72 __u32 icache_line_size; /* L1 i-cache line size 0x6C */
77 __u32 dcache_block_size; /* L1 d-cache block size */
78 __u32 icache_block_size; /* L1 i-cache block size */
79 __u32 dcache_log_block_size; /* L1 d-cache log block size */
80 __u32 icache_log_block_size; /* L1 i-cache log block size */
[all …]
/OK3568_Linux_fs/u-boot/fs/reiserfs/
H A Dreiserfs_private.h2 * Copyright 2000-2002 by Hans Reiser, licensing governed by reiserfs/README
4 * GRUB -- GRand Unified Bootloader
7 * (C) Copyright 2003 - 2004
11 * SPDX-License-Identifier: GPL-2.0+
32 /* This is the new super block of a journaling reiserfs system */
37 __u32 s_root_block; /* root block number */
38 __u32 s_journal_block; /* journal block number */
40 …__u32 s_journal_size; /* size of the journal on FS creation. used to make sure they don't overfl…
46 __u16 s_blocksize; /* block size */
47 __u16 s_oid_maxsize; /* max size of object id array */
[all …]
/OK3568_Linux_fs/u-boot/include/
H A Dblk.h2 * (C) Copyright 2000-2004
5 * SPDX-License-Identifier: GPL-2.0+
54 /* define block device operation flags */
55 #define BLK_PRE_RW BIT(0) /* Block prepare read & write*/
92 unsigned long blksz; /* block size */
125 #define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz)) argument
126 #define PAD_TO_BLOCKSIZE(size, blk_desc) \ argument
127 (PAD_SIZE(size, blk_desc->blksz))
131 * blkcache_read() - attempt to read a set of blocks from cache
133 * @param iftype - IF_TYPE_x for type of device
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