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/linux/include/linux/
H A Dtpm_svsm.h1 /* SPDX-License-Identifier: GPL-2.0-only */
12 * [1] "Secure VM Service Module for SEV-SNP Guests"
25 * struct svsm_vtpm_request - Generic request for single word command
28 * Defined by AMD SVSM spec [1] in section "8.2 SVSM_VTPM_CMD Call" -
40 * struct svsm_vtpm_response - Generic response
43 * Defined by AMD SVSM spec [1] in section "8.2 SVSM_VTPM_CMD Call" -
58 * struct svsm_vtpm_cmd_request - Structure for a TPM_SEND_COMMAND request
60 * @locality: The locality
64 * Defined by AMD SVSM spec [1] in section "8.2 SVSM_VTPM_CMD Call" -
69 * 0x004     1          Locality (must-be-0)
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H A Dworkqueue.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * workqueue.h --- work queue handling for Linux.
24 #define work_data_bits(work) ((unsigned long *)(&(work)->data))
52 * data contains off-queue information when !WORK_STRUCT_PWQ.
61 WORK_OFFQ_FLAG_BITS = WORK_OFFQ_FLAG_END - WORK_OFFQ_FLAG_SHIFT,
67 * When a work item is off queue, the high bits encode off-queue flags
72 WORK_OFFQ_LEFT = BITS_PER_LONG - WORK_OFFQ_POOL_SHIFT,
102 /* Convenience constants - of type 'unsigned long', not 'enum'! */
104 #define WORK_OFFQ_FLAG_MASK (((1ul << WORK_OFFQ_FLAG_BITS) - 1) << WORK_OFFQ_FLAG_SHIFT)
105 #define WORK_OFFQ_DISABLE_MASK (((1ul << WORK_OFFQ_DISABLE_BITS) - 1) << WORK_OFFQ_DISABLE_SHIFT)
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/linux/Documentation/core-api/
H A Dworkqueue.rst33 thread system-wide. A single MT wq needed to keep around the same
60 * Use per-CPU unified worker pools shared by all wq to provide
85 worker-pools.
87 The cmwq design differentiates between the user-facing workqueues that
89 which manages worker-pools and processes the queued work items.
91 There are two worker-pools, one for normal work items and the other
93 worker-pools to serve work items queued on unbound workqueues - the
98 Each per-CPU BH worker pool contains only one pseudo worker which represents
106 things like CPU locality, concurrency limits, priority and more. To
110 When a work item is queued to a workqueue, the target worker-pool is
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/linux/drivers/char/tpm/
H A Dtpm_tis_i2c.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2014-2021 Nuvoton Technology corporation
4 * Copyright (C) 2019-2022 Infineon Technologies AG
14 #include <linux/crc-ccitt.h>
27 /* TIS-compatible register address to avoid clash with TPM_ACCESS (0x00) */
78 * Table 51 "I2C-TPM Register Overview".
80 * For most addresses this can be done by simply stripping off the locality
86 * Locality information is ignored, since this driver assumes exclusive access
87 * to the TPM and always uses locality 0.
115 if (msg->flags & I2C_M_RD) in tpm_tis_i2c_retry_transfer_until_ack()
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H A Dtpm-chip.c1 // SPDX-License-Identifier: GPL-2.0-only
13 * Maintained by: <tpmdd-devel@lists.sourceforge.net>
44 if (!chip->ops->request_locality) in tpm_request_locality()
47 rc = chip->ops->request_locality(chip, 0); in tpm_request_locality()
51 chip->locality = rc; in tpm_request_locality()
59 if (!chip->ops->relinquish_locality) in tpm_relinquish_locality()
62 rc = chip->ops->relinquish_locality(chip, chip->locality); in tpm_relinquish_locality()
64 dev_err(&chip->dev, "%s: : error %d\n", __func__, rc); in tpm_relinquish_locality()
66 chip->locality = -1; in tpm_relinquish_locality()
71 if (!chip->ops->cmd_ready) in tpm_cmd_ready()
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/linux/include/uapi/linux/
H A Dvtpm_proxy.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
24 * enum vtpm_proxy_flags - flags for the proxy TPM
32 * struct vtpm_proxy_new_dev - parameter structure for the
50 /* vendor specific commands to set locality */
/linux/drivers/acpi/numa/
H A Dhmat.c1 // SPDX-License-Identifier: GPL-2.0
27 #include <linux/memory-tiers.h>
95 if (initiator->processor_pxm == cpu_pxm) in find_mem_initiator()
105 if (target->memory_pxm == mem_pxm) in find_mem_target()
111 * hmat_get_extended_linear_cache_size - Retrieve the extended linear cache size
129 return -ENOENT; in hmat_get_extended_linear_cache_size()
131 list_for_each_entry(tcache, &target->caches, node) { in hmat_get_extended_linear_cache_size()
132 if (tcache->cache_attrs.address_mode != in hmat_get_extended_linear_cache_size()
136 res = &target->memregions; in hmat_get_extended_linear_cache_size()
140 *cache_size = tcache->cache_attrs.size; in hmat_get_extended_linear_cache_size()
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/linux/fs/ext4/
H A Dmballoc.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2003-2006, Cluster File Systems, Inc, info@clusterfs.com
18 #include <linux/backing-dev.h>
25 * - test ext4_ext_search_left() and ext4_ext_search_right()
26 * - search for metadata in few groups
29 * - normalization should take into account whether file is still open
30 * - discard preallocations if no free space left (policy?)
31 * - don't normalize tails
32 * - quota
33 * - reservation for superuser
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/linux/drivers/pci/
H A Dtph.c1 // SPDX-License-Identifier: GPL-2.0
10 #include <linux/pci-acpi.h>
13 #include <linux/pci-tph.h>
17 /* System-wide TPH disabled */
24 * Locality TPH Features"), as specified in the approved ECN for PCI Firmware
25 * Spec and available at https://members.pcisig.com/wg/PCI-SIG/document/15470.
27 * @vm_st_valid: 8-bit ST for volatile memory is valid
28 * @vm_xst_valid: 16-bit extended ST for volatile memory is valid
30 * @vm_st: 8-bit ST for volatile mem
31 * @vm_xst: 16-bit extended ST for volatile mem
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/linux/fs/xfs/libxfs/
H A Dxfs_alloc.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
38 struct xfs_perag *pag; /* per-ag struct for this agno */
41 xfs_agblock_t agbno; /* allocation group-relative block # */
102 * Allocate an extent anywhere in the specific AG given. If there is no
124 * Locality aware allocation will be attempted in the initial AG, but on failure
125 * non-localised attempts will be made. The AGs are constrained by previous
126 * allocations in the current transaction. Two passes will be made - the first
127 * non-blocking, the second blocking.
133 * Iterate from the AG indicated from args->fsbno through to the end of the
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/linux/drivers/usb/musb/
H A Dmusb_core.h1 /* SPDX-License-Identifier: GPL-2.0 */
6 * Copyright (C) 2005-2006 by Texas Instruments
7 * Copyright (C) 2006-2007 Nokia Corporation
32 /* Helper defines for struct musb->hwvers */
51 /* NOTE: otg and peripheral-only state machines start at B_IDLE.
52 * OTG or host-only go to A_IDLE when ID is sensed.
54 #define is_peripheral_active(m) (!(m)->is_host)
55 #define is_host_active(m) ((m)->is_host)
99 { (_musb)->is_host = true; }
101 { (_musb)->is_host = false; }
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/linux/Documentation/core-api/real-time/
H A Dhardware.rst1 .. SPDX-License-Identifier: GPL-2.0
18 -----------------------
31 user space. Tools such as **lstopo** from the Portable Hardware Locality (hwloc)
32 project (https://www.open-mpi.org/projects/hwloc/) can visualize the hierarchy.
52 c2c tool can help identify cache-to-cache issues, where multiple CPU
56 --------------
58 Real-time systems often need to access hardware directly to perform their work.
76 requirements of certain real-time use cases.
82 is not limited to PCIe; internal buses within a System-on-Chip (SoC) can also be
86 --------------
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/linux/include/drm/intel/
H A Di915_hdcp_interface.h1 /* SPDX-License-Identifier: (GPL-2.0+) */
3 * Copyright © 2017-2019 Intel Corporation
17 * enum hdcp_port_type - HDCP port implementation type defined by ME/GSC FW
19 * @HDCP_PORT_TYPE_INTEGRATED: In-Host HDCP2.x port
33 * enum hdcp_wired_protocol - HDCP adaptation used on the port
57 * enum hdcp_transcoder - ME/GSC Firmware defined index for transcoders
79 * struct hdcp_port_data - intel specific HDCP port data
88 * over re-Auth has to be triggered.
103 * struct i915_hdcp_ops- ops for HDCP2.2 services.
171 * struct i915_hdcp_arbiter - Used for communication between i915
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/linux/Documentation/arch/arm64/
H A Dacpi_object_usage.rst16 - Required: DSDT, FADT, GTDT, MADT, MCFG, RSDP, SPCR, XSDT
18 - Recommended: BERT, EINJ, ERST, HEST, PCCT, SSDT
20 - Optional: AGDI, BGRT, CEDT, CPEP, CSRT, DBG2, DRTM, ECDT, FACS, FPDT,
24 - Not supported: AEST, APMT, BOOT, DBGP, DMAR, ETDT, HPET, IVRS, LPIT,
41 This table describes a non-maskable event, that is used by the platform
68 Optional, not currently supported, with no real use-case for an
83 time as ARM-compatible hardware is available, and the specification
151 UEFI-based; if it is UEFI-based, this table may be supplied. When this
167 the hardware reduced profile, and only 64-bit address fields will
184 filled in properly - that the PSCI_COMPLIANT flag is set and that
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/linux/drivers/perf/hisilicon/
H A Dhisi_uncore_pmu.c1 // SPDX-License-Identifier: GPL-2.0-only
9 * This code is based on the uncore PMUs like arm-cci and arm-ccn.
24 #define HISI_MAX_PERIOD(nr) (GENMASK_ULL((nr) - 1, 0))
36 return sysfs_emit(page, "config=0x%lx\n", (unsigned long)eattr->var); in hisi_event_sysfs_show()
48 return sysfs_emit(buf, "%d\n", hisi_pmu->on_cpu); in hisi_cpumask_sysfs_show()
59 return sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(&hisi_pmu->associated_cpus)); in hisi_associated_cpus_sysfs_show()
80 return sysfs_emit(page, "0x%08x\n", hisi_pmu->identifier); in hisi_uncore_pmu_identifier_attr_show()
99 struct perf_event *sibling, *leader = event->group_leader; in hisi_validate_event_group()
100 struct hisi_pmu *hisi_pmu = to_hisi_pmu(event->pmu); in hisi_validate_event_group()
109 if (leader->pmu != event->pmu) in hisi_validate_event_group()
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/linux/kernel/sched/ext/
H A Didle.c1 // SPDX-License-Identifier: GPL-2.0
3 * BPF extensible scheduler class: Documentation/scheduler/sched-ext.rst
5 * Built-in idle CPU tracking policy.
17 /* Enable/disable built-in idle CPU selection policy */
20 /* Enable/disable per-node idle cpumasks */
41 * Global host-wide idle cpumasks (used when SCX_OPS_BUILTIN_IDLE_PER_NODE
47 * Per-node idle cpumasks.
52 * Local per-CP
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H A Dinternal.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * BPF extensible scheduler class: Documentation/scheduler/sched-ext.rst
17 * scx_add_event - Increase an event counter for 'name' by 'cnt'
25 this_cpu_add((sch)->pcpu->event_stats.name, (cnt)); \
30 * __scx_add_event - Increase an event counter for 'name' by 'cnt'
38 __this_cpu_add((sch)->pcpu->event_stat
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/linux/drivers/md/bcache/
H A Dalloc.c1 // SPDX-License-Identifier: GPL-2.0
10 * btree pointers - they must match for the pointer to be considered valid.
20 * for that write to complete before we use it - otherwise after a crash we
29 * free_inc isn't the only freelist - if it was, we'd often to sleep while
30 * priorities and gens were being written before we could allocate. c->free is a
34 * have nothing pointing into them - these we can reuse without waiting for
37 * them (because they were overwritten). That's the unused list - buckets on the
40 * It's also important to ensure that gens don't wrap around - with respect to
42 * difficult to do in practice, but we explicitly guard against it anyways - if
47 * bch_bucket_alloc() allocates a single bucket from a specific cache.
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/linux/Documentation/devicetree/bindings/riscv/
H A Dextensions.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RISC-V ISA extensions
10 - Paul Walmsley <paul.walmsley@sifive.com>
11 - Palmer Dabbelt <palmer@sifive.com>
12 - Conor Dooley <conor@kernel.org>
15 RISC-V has a large number of extensions, some of which are "standard"
16 extensions, meaning they are ratified by RISC-V International, and others
30 Identifies the specific RISC-V instruction set architecture
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/linux/drivers/net/ethernet/via/
H A Dvia-velocity.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
6 * File: via-velocity.h
10 * Author: Chuang Liang-Shing, AJ Jiang
21 #define VELOCITY_NAME "via-velocity"
30 #define OPTION_DEFAULT { [0 ... MAX_UNITS-1] = -1}
167 __le16 len; /* bits 0--13; bit 15 - owner */
185 __le16 size; /* bits 0--14 - frame size, bit 15 - enable int. */
194 __le16 len; /* bits 0--13 - size of frame, bit 15 - owner */
200 u8 cmd; /* bits 0--1 - TCPLS, bits 4--7 - CMDZ */
210 __le16 size; /* bits 0--13 - size, bit 15 - queue */
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/linux/net/sunrpc/
H A Dsched.c1 // SPDX-License-Identifier: GPL-2.0-only
54 * rpciod-related stuff
62 if (current->flags & PF_WQ_WORKER) in rpc_task_gfp_mask()
70 if (cmpxchg(&task->tk_rpc_status, 0, rpc_status) == 0) in rpc_task_set_rpc_status()
78 unsigned long timeout = READ_ONCE(task->tk_timeout); in rpc_task_timeout()
83 return timeout - now; in rpc_task_timeout()
91 * queue->lock and bh_disabled in order to avoid races within
97 if (list_empty(&task->u.tk_wait.timer_list)) in __rpc_disable_timer()
99 task->tk_timeout = 0; in __rpc_disable_timer()
100 list_del(&task->u.tk_wait.timer_list); in __rpc_disable_timer()
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H A Dsvc.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * High-level RPC service routines
60 * only so that writing a previously-valid value still succeeds.
75 * sunrpc_get_pool_mode - get the current pool_mode for the host
112 m->to_pool = kcalloc(maxpools, sizeof(unsigned int), GFP_KERNEL); in svc_pool_map_alloc_arrays()
113 if (!m->to_pool) in svc_pool_map_alloc_arrays()
115 m->pool_to = kcalloc(maxpools, sizeof(unsigned int), GFP_KERNEL); in svc_pool_map_alloc_arrays()
116 if (!m->pool_to) in svc_pool_map_alloc_arrays()
122 kfree(m->to_pool); in svc_pool_map_alloc_arrays()
123 m->to_pool = NULL; in svc_pool_map_alloc_arrays()
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/linux/kernel/sched/
H A Dfair.c1 // SPDX-License-Identifier: GPL-2.0
47 #include <linux/memory-tiers.h>
65 * The initial- and re-scaling of tunables is configurable
69 * SCHED_TUNABLESCALING_NONE - unscaled, always *1
70 * SCHED_TUNABLESCALING_LOG - scaled logarithmically, *1+ilog(ncpus)
71 * SCHED_TUNABLESCALING_LINEAR - scaled linear, *ncpus
102 return -cp in arch_asym_cpu_priority()
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/linux/Documentation/admin-guide/
H A Dcgroup-v2.rst1 .. _cgroup-v2:
11 conventions of cgroup v2. It describes all userland-visible aspects
12 of cgroup including core and specific controller behaviors. All
14 v1 is available under :ref:`Documentation/admin-guide/cgroup-v1/index.rst <cgroup-v1>`.
22 1-1. Terminology
23 1-2. What is cgroup?
25 2-1. Mounting
26 2-2. Organizing Processes and Threads
27 2-2-1. Processes
28 2-2-2. Threads
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/linux/fs/xfs/
H A Dxfs_rtalloc.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
50 uint8_t *rsum_cache = args->rtg->rtg_rsum_cache; in xfs_rtany_summary()
57 high = min(high, rsum_cache[bbno] - 1); in xfs_rtany_summary()
59 *maxlog = -1; in xfs_rtany_summary()
67 for (log = high; log >= low; log--) { in xfs_rtany_summary()
86 *maxlog = -1; in xfs_rtany_summary()
108 for (log = oargs->mp->m_rsumlevels - 1; log >= 0; log--) { in xfs_rtcopy_summary()
109 for (bbno = oargs->mp->m_sb.sb_rbmblocks - 1; in xfs_rtcopy_summary()
111 bbno--) { in xfs_rtcopy_summary()
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