| /linux/Documentation/devicetree/bindings/sound/ |
| H A D | atmel,sama5d2-classd.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/sound/atmel,sama5d2-classd.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Nicolas Ferre <nicolas.ferre@microchip.com>
12 - Alexandre Belloni <alexandre.belloni@bootlin.com>
13 - Claudiu Beznea <claudiu.beznea@microchip.com>
22 - items:
23 - const: atmel,sama5d2-classd
24 - items:
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| /linux/arch/x86/kvm/mmu/ |
| H A D | spte.h | 1 // SPDX-License-Identifier: GPL-2.0-only
22 * be restricted to using write-protection (for L2 when CPU dirty logging, i.e.
28 * is guaranteed to have A/D bits and write-protection is forced only for
29 * TDP with CPU dirty logging (PML). If NPT ever gains PML-like support, it
30 * must be restricted to 64-bit KVM.
40 #define SPTE_BASE_ADDR_MASK (physical_mask & ~(u64)(PAGE_SIZE-1))
42 #define SPTE_BASE_ADDR_MASK (((1ULL << 52) - 1) & ~(u64)(PAGE_SIZE-1))
64 * as not-present for access tracking purposes. We do not save the W bit as the
67 * must not overlap the A/D type mask.
78 * SPTE is write-protected. See is_writable_pte() for details.
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| /linux/Documentation/filesystems/ |
| H A D | resctrl.rst | 1 .. SPDX-License-Identifier: GPL-2.0
9 :Authors: - Fenghua Yu <fenghua.yu@intel.com>
10 - Tony Luck <tony.luck@intel.com>
11 - Vikas Shivappa <vikas.shivappa@intel.com>
38 # mount -t resctrl resctrl [-o cdp[,cdpl2][,mba_MBps][,debug]] /sys/fs/resctrl
57 pseudo-locking is a unique way of using cache control to "pin" or
59 "Cache Pseudo-Locking".
96 own settings for cache use which can over-ride
128 Corresponding region is pseudo-locked. No
131 Indicates if non-contiguous 1s value in CBM is supported.
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| /linux/tools/testing/selftests/net/ |
| H A D | ip_defrag.c | 1 // SPDX-License-Identifier: GPL-2.0
16 #include <time.h>
63 if (ret == -1 && (errno == ETIMEDOUT || errno == EAGAIN)) in recv_validate_udp()
66 if (ret != -1) in recv_validate_udp()
73 if (ret == -1) in recv_validate_udp()
89 sum -= 0xffff; in raw_checksum()
95 sum -= 0xffff; in raw_checksum()
106 sum = raw_checksum((uint8_t *)&iphdr->ip_src, 2 * sizeof(iphdr->ip_src), in udp_checksum()
122 sum = raw_checksum((uint8_t *)&iphdr->ip6_src, 2 * sizeof(iphdr->ip6_src), in udp6_checksum()
124 sum = raw_checksum((uint8_t *)&udphdr->len, sizeof(udphdr->len), sum); in udp6_checksum()
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| /linux/Documentation/admin-guide/cgroup-v1/ |
| H A D | cpusets.rst | 11 - Portions Copyright (c) 2004-2006 Silicon Graphics, Inc.
12 - Modified by Paul Jackson <pj@sgi.com>
13 - Modified by Christoph Lameter <cl@gentwo.org>
14 - Modified by Paul Menage <menage@google.com>
15 - Modified by Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
41 ----------------------
45 an on-line node that contains memory.
54 Documentation/admin-guide/cgroup-v1/cgroups.rst.
73 ----------------------------
77 non-uniform access times (NUMA) presents additional challenges for
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| /linux/drivers/video/ |
| H A D | aperture.c | 1 // SPDX-License-Identifier: MIT
20 * driver can be active at any given time. Many systems load a generic
21 * graphics drivers, such as EFI-GOP or VESA, early during the boot process.
23 * hardware-specific driver. To take over the device, the dedicated driver
25 * ownership of framebuffer memory and hand-over between drivers.
32 * .. code-block:: c
42 * return -ENODEV;
43 * base = mem->start;
61 * The given example reads the platform device's I/O-memory range from the
82 * .. code-block:: c
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| /linux/drivers/gpu/drm/i915/gt/ |
| H A D | intel_gt_types.h | 1 /* SPDX-License-Identifier: MIT */
53 * overlap in valid steering targets with 'subslice' style registers, we will
54 * need to explicitly re-steer reads of registers of the other type.
56 * Only the replication types that may need additional non-default steering
69 * will always return a non-terminated value at instance (0, 0). We'll
190 * @total: Total time this engine was busy.
192 * Accumulated time not counting the most recent block in cases
212 * Mask of the non fused CCS slices
250 * Should be taken before uncore->lock in cases where both are desired.
255 * Base of per-tile GTTMMADR where we can derive the MMIO and the GGTT.
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| /linux/arch/x86/boot/compressed/ |
| H A D | kaslr.c | 1 // SPDX-License-Identifier: GPL-2.0
37 /* Simplified build-specific string for starting entropy. */
49 hash = (hash << ((sizeof(hash) * 8) - 7)) | (hash >> 7); in rotate_xor()
78 * Store memory limit: MAXMEM on 64-bit and KERNEL_IMAGE_SIZE on 32-bit.
92 MEM_AVOID_MEMMAP_END = MEM_AVOID_MEMMAP_BEGIN + MAX_MEMMAP_REGIONS - 1,
101 if (one->start + one->size <= two->start) in mem_overlaps()
104 if (one->start >= two->start + two->size) in mem_overlaps()
124 return -EINVAL; in parse_memmap()
128 return -EINVAL; in parse_memmap()
133 return -EINVAL; in parse_memmap()
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| /linux/Documentation/admin-guide/mm/ |
| H A D | numa_memory_policy.rst | 10 supported platforms with Non-Uniform Memory Access architectures since 2.4.?.
16 (``Documentation/admin-guide/cgroup-v1/cpusets.rst``)
19 programming interface that a NUMA-aware application can take advantage of. When
28 ------------------------
41 not to overload the initial boot node with boot-time
45 this is an optional, per-task policy. When defined for a
61 In a multi-threaded task, task policies apply only to the thread
64 at the time a new task policy is installed retain their current
70 the policy at the time they were allocated.
98 mapping-- i.e., at Copy-On-Write.
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| /linux/net/netfilter/ |
| H A D | xt_time.c | 6 * This is a module which is used for time matching
23 u_int8_t month; /* (1-12) */
24 u_int8_t monthday; /* (1-31) */
25 u_int8_t weekday; /* (1-7) */
26 u_int8_t hour; /* (0-23) */
27 u_int8_t minute; /* (0-59) */
28 u_int8_t second; /* (0-59) */
43 * Since time progresses forward, it is best to organize this array in reverse,
44 * to minimize lookup time.
51 /* 2039 - 2030 */
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| /linux/drivers/firmware/tegra/ |
| H A D | ivc.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2014-2016, NVIDIA CORPORATION. All rights reserved.
47 * This structure is divided into two-cache aligned parts, the first is only
50 * lines, which is critical to performance and necessary in non-cache coherent
79 if (!ivc->peer) in tegra_ivc_invalidate()
82 dma_sync_single_for_cpu(ivc->peer, phys, TEGRA_IVC_ALIGN, in tegra_ivc_invalidate()
88 if (!ivc->peer) in tegra_ivc_flush()
91 dma_sync_single_for_device(ivc->peer, phys, TEGRA_IVC_ALIGN, in tegra_ivc_flush()
106 * Perform an over-full check to prevent denial of service attacks in tegra_ivc_empty()
109 * expected to check for full or over-full conditions. in tegra_ivc_empty()
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| /linux/include/linux/ |
| H A D | string.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
23 * memdup_array_user - duplicate array from user space
37 return ERR_PTR(-EOVERFLOW); in memdup_array_user()
43 * vmemdup_array_user - duplicate array from user space
57 return ERR_PTR(-EOVERFLOW); in vmemdup_array_user()
92 * strscpy - Copy a C-string into a sized buffer
99 * buffers overlap. The destination @dst buffer is always NUL terminated,
100 * unless it's zero-sized.
110 * trailing %NUL) or -E2BIG if @size is 0 or the copy from @src was
124 memset(__dst + __wrote + 1, 0, __count - __wrote - 1); \
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| /linux/fs/nilfs2/ |
| H A D | gcinode.c | 1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
12 * This file adds the cache of on-disk blocks to be moved in garbage
18 * time after they are copied to a new log. Dirty blocks made on the
19 * current generation and the blocks to be moved by GC never overlap
38 * nilfs_gccache_submit_read_data() - add data buffer and submit read request
39 * @inode - gc inode
40 * @blkoff - dummy offset treated as the key for the page cache
41 * @pbn - physical block number of the block
42 * @vbn - virtual block number of the block, 0 for non-virtual block
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| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | dev-raw-vbi.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _raw-vbi:
12 information is transmitted, allowing some time while the electron beam
64 time to permit Unix tool chains, programming a device and then reading
89 overlap, or when the driver supports multiple opens and another process
106 .. flat-table:: struct v4l2_vbi_format
107 :header-rows: 0
108 :stub-columns: 0
111 * - __u32
112 - ``sampling_rate``
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| /linux/mm/ |
| H A D | numa_memblks.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
26 for (i = 0; i < ARRAY_SIZE(mi->blk); i++) in numa_nodemask_from_meminfo()
27 if (mi->blk[i].start != mi->blk[i].end && in numa_nodemask_from_meminfo()
28 mi->blk[i].nid != NUMA_NO_NODE) in numa_nodemask_from_meminfo()
29 node_set(mi->blk[i].nid, *nodemask); in numa_nodemask_from_meminfo()
33 * numa_reset_distance - Reset NUMA distance table
69 return -ENOMEM; in numa_alloc_distance()
85 * numa_set_distance - Set NUMA distance from one NUMA to another
99 * at the time of table creation or @distance doesn't make sense, the call
142 pr_warn("Warning: invalid memblk node %d [mem %#010Lx-%#010Lx]\n", in numa_add_memblk_to()
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| /linux/arch/x86/kernel/cpu/resctrl/ |
| H A D | pseudo_lock.c | 1 // SPDX-License-Identifier: GPL-2.0
5 * Pseudo-locking support built on top of Cache Allocation Technology (CAT)
38 * resctrl_arch_get_prefetch_disable_bits - prefetch disable bits of supported
43 * pseudo-locking. This includes testing to ensure pseudo-locked regions
45 * as well as that these pseudo-locked regions can maintain their low cache
46 * miss rates under variety of load conditions for significant lengths of time.
48 * After a platform has been validated to support pseudo-locking its
98 * resctrl_arch_pseudo_lock_fn - Load kernel memory into cache
99 * @_plr: the pseudo-lock region descriptor
101 * This is the core pseudo-locking flow.
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| /linux/Documentation/networking/ |
| H A D | nexthop-group-resilient.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 Resilient Next-hop Groups
7 Resilient groups are a type of next-hop group that is aimed at minimizing
12 the legacy multipath next-hop group, which uses the hash-threshold
15 To select a next hop, hash-threshold algorithm first assigns a range of
22 +-------+-------+-------+-------+-------+
24 +-------+-+-----+---+---+-----+-+-------+
26 +---------+---------+---------+---------+
29 under the hash-threshold algorithm.
32 and 4 in favor of 5. While there will usually be some overlap between the
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| /linux/arch/sh/lib/ |
| H A D | memcpy-sh4.S | 1 /* SPDX-License-Identifier: GPL-2.0 */
7 * Modified from memcpy.S and micro-optimised for SH4
16 * It is assumed that there is no overlap between src and dst.
17 * If there is an overlap, then the results are undefined.
21 ! GHIJ KLMN OPQR --> ...G HIJK LMNO PQR.
30 add #-1,r5 ! 79 EX
34 add #-4,r5 ! 50 EX
55 mov.l r3,@-r0 ! 30 LS
72 mov.l r3,@-r0 ! 30 LS
79 add #-6,r2 ! 50 EX
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| /linux/fs/erofs/ |
| H A D | erofs_fs.h | 1 /* SPDX-License-Identifier: GPL-2.0-only OR Apache-2.0 */
3 * EROFS (Enhanced ROM File System) on-disk format definition
5 * Copyright (C) 2017-2018 HUAWEI, Inc.
35 ((EROFS_FEATURE_INCOMPAT_48BIT << 1) - 1)
49 /* erofs on-disk super block (currently 128 bytes) */
52 __le32 checksum; /* crc32c to avoid unexpected on-disk overlap */
60 __le64 inos; /* total valid ino # (== f_files - f_favail) */
66 __u8 uuid[16]; /* 128-bit uuid for volume */
83 __le32 build_time; /* seconds added to epoch for mkfs time */
89 * EROFS inode datalayout (i_format in on-disk inode):
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| /linux/include/uapi/linux/ |
| H A D | hdreg.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
17 #define IDE_DRIVE_TASK_INVALID -1
137 * 0x01->0x02 Reserved
141 * 0x04->0x07 Reserved
146 * 0x09->0x0F Reserved
151 * 0x10->0x1F Reserved
153 #define WIN_READ 0x20 /* 28-Bit */
154 #define WIN_READ_ONCE 0x21 /* 28-Bit without retries */
155 #define WIN_READ_LONG 0x22 /* 28-Bit */
156 #define WIN_READ_LONG_ONCE 0x23 /* 28-Bit without retries */
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| /linux/Documentation/userspace-api/ |
| H A D | seccomp_filter.rst | 25 to time-of-check-time-of-use (TOCTOU) attacks that are common in system
65 call will return -1 and set errno to ``EINVAL``.
73 true, ``-EACCES`` will be returned. This requirement ensures that filter
79 time, but allow for further decreasing the attack surface during
82 The above call returns 0 on success and non-zero on error.
106 task without executing the system call. ``siginfo->si_call_addr``
108 ``siginfo->si_syscall`` and ``siginfo->si_arch`` will indicate which
111 instruction). The return value register will contain an arch-
112 dependent value -- if resuming execution, set it to something
114 it with ``-ENOSYS`` could overwrite some useful information.)
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| /linux/arch/powerpc/mm/book3s64/ |
| H A D | hash_tlb.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
27 #include <asm/pte-walk.h>
51 i = batch->index; in hpte_need_flush()
58 * must still exist (and thus the VMA not reused) at the time in hpte_need_flush()
65 addr &= ~((1UL << mmu_psize_defs[psize].shift) - 1); in hpte_need_flush()
90 vsid = get_user_vsid(&mm->context, addr, ssize); in hpte_need_flush()
103 if (!batch->active) { in hpte_need_flush()
119 if (i != 0 && (mm != batch->mm || batch->psize != psize || in hpte_need_flush()
120 batch->ssize != ssize)) { in hpte_need_flush()
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| /linux/tools/perf/util/intel-pt-decoder/ |
| H A D | intel-pt-decoder.c | 1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (c) 2013-2014, Intel Corporation.
22 #include "intel-pt-insn-decoder.h"
23 #include "intel-pt-pk
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| /linux/tools/memory-model/Documentation/ |
| H A D | simple.txt | 2 memory-ordering lives simple, as is necessary for those whose domain
3 is complex. After all, there are bugs other than memory-ordering bugs,
4 and the time spent gaining memory-ordering knowledge is not available
5 for gaining domain knowledge. Furthermore Linux-kernel memory model
15 of MMIO-based device drivers will often need to use mb(), rmb(), and
22 Single-threaded code
25 In single-threaded code, there is no reordering, at least assuming
29 CPUs at the same time. One important exception is a function that makes
38 this lock at a given time, your code will be executed single-threaded.
56 surprisingly hard to correctly code production-quality lock acquisition
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| /linux/drivers/vfio/pci/ |
| H A D | vfio_pci_config.c | 1 // SPDX-License-Identifier: GPL-2.0-only
18 * which fields are 'virtualized' - special actions and translations to
48 [PCI_CAP_ID_SLOTID] = 0, /* bridge - don't care */
50 [PCI_CAP_ID_CHSWP] = 0, /* cpci - not yet */
54 [PCI_CAP_ID_DBG] = 0, /* debug - don't care */
55 [PCI_CAP_ID_CCRC] = 0, /* cpci - not yet */
56 [PCI_CAP_ID_SHPC] = 0, /* hotswap - not yet */
57 [PCI_CAP_ID_SSVID] = 0, /* bridge - don't care */
58 [PCI_CAP_ID_AGP3] = 0, /* AGP8x - not yet */
67 * Lengths of PCIe/PCI-X Extended Config Capabilities
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