| /linux/drivers/gpu/drm/tegra/ |
| H A D | uapi.c | 1 // SPDX-License-Identifier: GPL-2.0-only
17 struct tegra_drm_mapping *mapping = in tegra_drm_mapping_release() local
20 host1x_bo_unpin(mapping->map); in tegra_drm_mapping_release()
21 host1x_bo_put(mapping->bo); in tegra_drm_mapping_release()
23 kfree(mapping); in tegra_drm_mapping_release()
26 void tegra_drm_mapping_put(struct tegra_drm_mapping *mapping) in tegra_drm_mapping_put() argument
28 kref_put(&mapping->ref, tegra_drm_mapping_release); in tegra_drm_mapping_put()
33 struct tegra_drm_mapping *mapping; in tegra_drm_channel_context_close() local
36 if (context->memory_context) in tegra_drm_channel_context_close()
37 host1x_memory_context_put(context->memory_context); in tegra_drm_channel_context_close()
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| H A D | submit.c | 1 // SPDX-License-Identifier: GPL-2.0-only
4 #include <linux/dma-fence-array.h>
5 #include <linux/dma-mapping.h>
27 dev_err_ratelimited(context->client->base.dev, \
29 current->comm, ##__VA_ARGS__)
46 kref_get(&bo->ref); in gather_bo_get()
55 dma_free_attrs(bo->dev, bo->gather_data_words * 4, bo->gather_data, bo->gather_data_dma, in gather_bo_release()
64 kref_put(&bo->ref, gather_bo_release); in gather_bo_put()
76 return ERR_PTR(-ENOMEM); in gather_bo_pin()
78 kref_init(&map->ref); in gather_bo_pin()
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| /linux/Documentation/filesystems/iomap/ |
| H A D | design.rst | 1 .. SPDX-License-Identifier: GPL-2.0
70 of mapping function calls into the filesystem across a larger amount of
71 data.
78 1. Obtain a space mapping via ``->iomap_begin``
80 2. For each sub-unit of work...
82 1. Revalidate the mapping and go back to (1) above, if necessary.
89 4. Release the mapping via ``->iomap_end``, if necessary
105 -----------
127 device pre-shutdown hook from returning before other threads have
130 * **filesystem mapping lock**: This synchronization primitive is
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| /linux/drivers/net/wwan/iosm/ |
| H A D | iosm_ipc_pcie.h | 1 /* SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2020-21 Intel Corporation.
35 * enum ipc_pcie_sleep_state - Enum type to different sleep state transitions
45 * struct iosm_pcie - IPC_PCIE struct.
54 * @imem: Pointer to imem data struct
81 * struct ipc_skb_cb - Struct definition of the socket buffer which is mapped to
83 * @mapping: Store physical or IOVA mapped address of skb virtual add.
89 dma_addr_t mapping; member
96 * enum ipc_ul_usr_op - Control operation to execute the right action on
110 * ipc_pcie_addr_map - Maps the kernel's virtual address to either IOVA
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| /linux/drivers/net/xen-netback/ |
| H A D | hash.c | 46 memcpy(new->tag, tag, len); in xenvif_add_hash()
47 new->len = len; in xenvif_add_hash()
48 new->val = val; in xenvif_add_hash()
50 spin_lock_irqsave(&vif->hash.cache.lock, flags); in xenvif_add_hash()
54 list_for_each_entry_rcu(entry, &vif->hash.cache.list, link, in xenvif_add_hash()
55 lockdep_is_held(&vif->hash.cache.lock)) { in xenvif_add_hash()
57 if (entry->len == len && in xenvif_add_hash()
58 memcmp(entry->tag, tag, len) == 0) in xenvif_add_hash()
60 if (!oldest || entry->seq < oldest->seq) in xenvif_add_hash()
65 new->seq = atomic_inc_return(&vif->hash.cache.seq); in xenvif_add_hash()
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| /linux/Documentation/admin-guide/device-mapper/ |
| H A D | dm-zoned.rst | 2 dm-zoned
5 The dm-zoned device mapper target exposes a zoned block device (ZBC and
7 pattern constraints. In effect, it implements a drive-managed zoned
10 host-managed zoned block devices and can mitigate the potential
11 device-side performance degradation due to excessive random writes on
12 host-aware zoned block devices.
21 http://www.t13.org/Documents/UploadedDocuments/docs2015/di537r05-Zoned_Device_ATA_Command_Set_ZAC.p…
23 The dm-zoned implementation is simple and minimizes system overhead (CPU
25 host-managed disk with 256 MB zones, dm-zoned memory usage per disk
29 dm-zoned target devices are formatted and checked using the dmzadm
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| H A D | vdo-design.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
4 Design of dm-vdo
7 The dm-vdo (virtual data optimizer) target provides inline deduplication,
8 compression, zero-block elimination, and thin provisioning. A dm-vdo target
12 production environments ever since. It was made open-source in 2017 after
14 dm-vdo. For usage, see vdo.rst in the same directory as this file.
25 The design of dm-vdo is based on the idea that deduplication is a two-part
26 problem. The first is to recognize duplicate data. The second is to avoid
27 storing multiple copies of those duplicates. Therefore, dm-vdo has two main
29 duplicate data, and a data store with a reference counted block map that
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| /linux/drivers/gpu/drm/ |
| H A D | drm_of.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 #include <linux/media-bus-format.h>
25 * drm_of_crtc_port_mask - find the mask of a registered CRTC by port OF node
39 if (tmp->port == port) in drm_of_crtc_port_mask()
50 * drm_of_find_possible_crtcs - find the possible CRTCs for an encoder port
83 * drm_of_component_match_add - Add a component helper OF node match rule
101 * drm_of_component_probe - Generic probe function for a component based master
121 if (!dev->of_node) in drm_of_component_probe()
122 return -EINVAL; in drm_of_component_probe()
129 port = of_parse_phandle(dev->of_node, "ports", i); in drm_of_component_probe()
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| /linux/Documentation/trace/ |
| H A D | ring-buffer-map.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 Tracefs ring-buffer memory mapping
11 Tracefs ring-buffer memory map provides an efficient method to stream data
12 as no memory copy is necessary. The application mapping the ring-buffer becomes
13 then a consumer for that ring-buffer, in a similar fashion to trace_pipe.
15 Memory mapping setup
17 The mapping works with a mmap() of the trace_pipe_raw interface.
19 The first system page of the mapping contains ring-buffer statistics and
20 description. It is referred to as the meta-page. One of the most important
21 fields of the meta-page is the reader. It contains the sub-buffer ID which can
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| /linux/drivers/net/ethernet/qlogic/qede/ |
| H A D | qede_fp.c | 1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
3 * Copyright (c) 2015-2017 QLogic Corporation
4 * Copyright (c) 2019-2020 Marvell International Ltd.
31 dma_addr_t mapping; in qede_alloc_rx_buffer() local
32 struct page *data; in qede_alloc_rx_buffer() local
34 /* In case lazy-allocation is allowed, postpone allocation until the in qede_alloc_rx_buffer()
38 if (allow_lazy && likely(rxq->filled_buffers > 12)) { in qede_alloc_rx_buffer()
39 rxq->filled_buffers--; in qede_alloc_rx_buffer()
43 data = alloc_pages(GFP_ATOMIC, 0); in qede_alloc_rx_buffer()
44 if (unlikely(!data)) in qede_alloc_rx_buffer()
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| /linux/arch/arm/mm/ |
| H A D | flush.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1995-2002 Russell King
48 : "r" (to), "r" (to + PAGE_SIZE - 1), "r" (zero) in flush_pfn_alias()
55 unsigned long offset = vaddr & (PAGE_SIZE - 1); in flush_icache_alias()
94 if (vma->vm_flags & VM_EXEC) in flush_cache_range()
110 if (vma->vm_flags & VM_EXEC && icache_is_vivt_asid_tagged()) in flush_cache_pages()
145 /* VIPT non-aliasing D-cache */ in __flush_ptrace_access()
163 if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) in flush_ptrace_access()
165 if (vma->vm_flags & VM_EXEC) in flush_ptrace_access()
179 * Copy user data from/to a page which is mapped into a different
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| /linux/mm/ |
| H A D | filemap.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1994-1999 Linus Torvalds
30 #include <linux/error-injection.h>
33 #include <linux/backing-dev.h>
72 * finished 'unifying' the page and buffer cache and SMP-threaded the
73 * page-cache, 21.05.1999, Ingo Molnar <mingo@redhat.com>
75 * SMP-threaded pagemap-LRU 1999, Andrea Arcangeli <andrea@suse.de>
81 * ->i_mmap_rwsem (truncate_pagecache)
82 * ->private_lock (__free_pte->block_dirty_folio)
83 * ->swap_lock (exclusive_swap_page, others)
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| /linux/Documentation/core-api/ |
| H A D | dma-api-howto.rst | 2 Dynamic DMA mapping Guide
10 with example pseudo-code. For a concise description of the API, see
11 Documentation/core-api/dma-api.rst.
39 supports 64-bit addresses for main memory and PCI BARs, it may use an IOMMU
40 so devices only need to use 32-bit DMA addresses.
49 +-------+ +------+ +------+
52 C +-------+ --------> B +------+ ----------> +------+ A
53 | | mapping | | by host | |
54 +-----+ | | | | bridge | | +--------+
55 | | | | +------+ | | | |
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| /linux/fs/ecryptfs/ |
| H A D | mmap.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * decryption of the file data as it passes between the lower
8 * Copyright (C) 1997-2003 Erez Zadok
9 * Copyright (C) 2001-2003 Stony Brook University
10 * Copyright (C) 2004-2007 International Business Machines Corp.
16 #include <linux/page-flags.h>
26 * This is where we encrypt the data and pass the encrypted data to
27 * the lower filesystem. In OpenPGP-compatible mode, we operate on
30 static int ecryptfs_writepages(struct address_space *mapping, in ecryptfs_writepages() argument
36 while ((folio = writeback_iter(mapping, wbc, folio, &error))) { in ecryptfs_writepages()
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| /linux/fs/xfs/ |
| H A D | xfs_aops.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
4 * Copyright (c) 2016-2018 Christoph Hellwig.
37 * Fast and loose check if this write could update the on-disk inode size.
41 return ioend->io_offset + ioend->io_size > in xfs_ioend_is_append()
42 XFS_I(ioend->io_inode)->i_disk_size; in xfs_ioend_is_append()
46 * Update on-disk file size now that data has been written to disk.
54 struct xfs_mount *mp = ip->i_mount; in xfs_setfilesize()
59 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp); in xfs_setfilesize()
73 ip->i_disk_size = isize; in xfs_setfilesize()
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| /linux/drivers/net/ethernet/broadcom/bnxt/ |
| H A D | bnxt_xdp.c | 1 /* Broadcom NetXtreme-C/E network driver.
3 * Copyright (c) 2016-2017 Broadcom Limited
27 dma_addr_t mapping, u32 len, in bnxt_xmit_bd() argument
40 num_frags = sinfo->nr_frags; in bnxt_xmit_bd()
44 prod = txr->tx_prod; in bnxt_xmit_bd()
45 tx_buf = &txr->tx_buf_ring[RING_TX(bp, prod)]; in bnxt_xmit_bd()
46 tx_buf->nr_frags = num_frags; in bnxt_xmit_bd()
48 tx_buf->page = virt_to_head_page(xdp->data); in bnxt_xmit_bd()
50 txbd = &txr->tx_desc_ring[TX_RING(bp, prod)][TX_IDX(prod)]; in bnxt_xmit_bd()
54 txbd->tx_bd_len_flags_type = cpu_to_le32(flags); in bnxt_xmit_bd()
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| /linux/net/core/ |
| H A D | ieee8021q_helpers.c | 1 // SPDX-License-Identifier: GPL-2.0
12 * IEEE 802.1Q-2022 in Annex I "I.3 Traffic type to traffic class mapping" and
13 * Table I-1 "Traffic type to traffic class mapping".
82 * ieee8021q_tt_to_tc - Map IEEE 802.1Q Traffic Type to Traffic Class
87 * on the number of queues configured on the NIC. The mapping is based on the
88 * example provided by IEEE 802.1Q-2022 in Annex I "I.3 Traffic type to traffic
89 * class mapping" and Table I-1 "Traffic type to traffic class mapping".
99 return -EINVAL; in ieee8021q_tt_to_tc()
105 IEEE8021Q_TT_MAX - 1, in ieee8021q_tt_to_tc()
106 "ieee8021q_8queue_tt_tc_map != max - 1"); in ieee8021q_tt_to_tc()
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| /linux/include/linux/ |
| H A D | iomap.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
32 #define IOMAP_INLINE 4 /* data inline in the inode */
38 * zeroing for areas that no data is copied to.
41 * written data and requires fdatasync to commit them to persistent storage.
52 * buffer heads for this mapping.
55 * rather than a file data extent.
58 * never be merged with the mapping before it.
94 #define IOMAP_NULL_ADDR -1ULL /* addr is not valid */
99 u64 addr; /* disk offset of mapping, bytes */
100 loff_t offset; /* file offset of mapping, bytes */
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| /linux/net/netfilter/ |
| H A D | nft_set_pipapo.h | 1 // SPDX-License-Identifier: GPL-2.0-only
8 /* Count of concatenated fields depends on count of 32-bit nftables registers */
25 #define NFT_PIPAPO_GROUPS_PER_BYTE(f) (BITS_PER_BYTE / (f)->bb)
32 * crossing page boundaries on most architectures (x86-64 and MIPS huge pages,
34 * keeps performance nice in case kvmalloc() gives us non-contiguous areas.
39 #define NFT_PIPAPO_LT_SIZE_LOW NFT_PIPAPO_LT_SIZE_THRESHOLD - \
44 (round_up((f)->groups / NFT_PIPAPO_GROUPS_PER_BYTE(f), sizeof(u32)))
46 (NFT_PIPAPO_GROUPS_PADDED_SIZE(f) - (f)->groups / \
52 /* Each n-bit range maps to up to n * 2 rules */
55 /* Use the rest of mapping table buckets for rule indices, but it makes no sense
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| /linux/include/linux/pinctrl/ |
| H A D | machine.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2011 ST-Ericsson SA
6 * Written on behalf of Linaro for ST-Ericsson
16 #include <linux/pinctrl/pinctrl-state.h>
27 * struct pinctrl_map_mux - mapping table content for MAP_TYPE_MUX_GROUP
39 * struct pinctrl_map_configs - mapping table content for MAP_TYPE_CONFIGS_*
54 * struct pinctrl_map - boards/machines shall provide this map for devices
55 * @dev_name: the name of the device using this specific mapping, the name
61 * @type: the type of mapping table entry
62 * @ctrl_dev_name: the name of the device controlling this specific mapping,
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| /linux/fs/netfs/ |
| H A D | buffered_write.c | 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Network filesystem high-level buffered write support.
38 static struct folio *netfs_grab_folio_for_write(struct address_space *mapping, in netfs_grab_folio_for_write() argument
44 if (mapping_large_folio_support(mapping)) in netfs_grab_folio_for_write()
47 return __filemap_get_folio(mapping, index, fgp_flags, in netfs_grab_folio_for_write()
48 mapping_gfp_mask(mapping)); in netfs_grab_folio_for_write()
53 * data written into the pagecache until we can find out from the server what
62 if (ctx->ops->update_i_size) { in netfs_update_i_size()
63 ctx->ops->update_i_size(inode, pos); in netfs_update_i_size()
69 fscache_update_cookie(ctx->cache, NULL, &pos); in netfs_update_i_size()
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| /linux/arch/mips/include/asm/ |
| H A D | vdso.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
16 * struct mips_vdso_image - Details of a VDSO image.
17 * @data: Pointer to VDSO image data (page-aligned).
18 * @size: Size of the VDSO image data (page-aligned).
21 * @mapping: Special mapping structure.
23 * This structure contains details of a VDSO image, including the image data
25 * part of the VDSO build process, aside from the mapping page array, which is
29 void *data; member
35 struct vm_special_mapping mapping; member
39 * The following structures are auto-generated as part of the build for each
|
| /linux/drivers/platform/x86/intel/ |
| H A D | tpmi_power_domains.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Mapping of TPMI power domains CPU mapping
23 #include <asm/intel-family.h>
48 * struct tpmi_cpu_info - Mapping information for a CPU
49 * @hnode: Used to add mapping information to hash list
56 * Structure to store mapping information for a Linux CPU
95 return info->pkg_id < topology_max_packages() && in tpmi_domain_is_valid()
96 info->punit_domain_id < MAX_POWER_DOMAINS; in tpmi_domain_is_valid()
102 int ret = -EINVAL; in tpmi_get_linux_cpu_number()
106 if (info->punit_domain_id == domain_id && info->pkg_id == package_id) { in tpmi_get_linux_cpu_number()
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| /linux/drivers/iommu/ |
| H A D | ipmmu-vmsa.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * IOMMU API for Renesas VMSA-compatible IPMMU
6 * Copyright (C) 2014-2020 Renesas Electronics Corporation
11 #include <linux/dma-mapping.h>
18 #include <linux/io-pgtable.h>
29 #include <asm/dma-iommu.h>
32 #define arm_iommu_attach_device(...) -ENODEV
37 #define IPMMU_CTX_INVALID -1
67 struct dma_iommu_mapping *mapping; member
93 /* -----------------------------------------------------------------------------
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| /linux/drivers/gpu/drm/i915/gem/ |
| H A D | i915_gem_shmem.c | 2 * SPDX-License-Identifier: MIT
4 * Copyright © 2014-2016 Intel Corporation
32 void shmem_sg_free_table(struct sg_table *st, struct address_space *mapping, in shmem_sg_free_table() argument
40 mapping_clear_unevictable(mapping); in shmem_sg_free_table()
65 struct address_space *mapping, in shmem_sg_alloc_table() argument
76 return -E2BIG; in shmem_sg_alloc_table()
83 if (size > resource_size(&mr->region)) in shmem_sg_alloc_table()
84 return -ENOMEM; in shmem_sg_alloc_table()
87 return -ENOMEM; in shmem_sg_alloc_table()
95 mapping_set_unevictable(mapping); in shmem_sg_alloc_table()
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