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/openbmc/linux/drivers/usb/gadget/function/
H A Df_subset.c1 // SPDX-License-Identifier: GPL-2.0+
3 * f_subset.c -- "CDC Subset" Ethernet link function driver
5 * Copyright (C) 2003-2005,2008 David Brownell
20 * This function packages a simple "CDC Subset" Ethernet port with no real
22 * The data transfer model is exactly that of CDC Ethernet, which is
23 * why we call it the "CDC Subset".
27 * so simple (CDC Ethernet). The original versions of this protocol used
29 * SA-1100 "Itsy" board, which could run Linux 2.4 kernels and supported
37 * Subset" in terms of data transfer and lack of control model. This was
42 * descriptors to the CDC Subset code, making this code look like a SAFE
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/openbmc/linux/Documentation/arch/arm64/
H A Dasymmetric-32bit.rst2 Asymmetric 32-bit SoCs
7 This document describes the impact of asymmetric 32-bit SoCs on the
8 execution of 32-bit (``AArch32``) applications.
10 Date: 2021-05-17
15 Some Armv9 SoCs suffer from a big.LITTLE misfeature where only a subset
16 of the CPUs are capable of executing 32-bit user applications. On such
19 ``execve(2)`` of 32-bit ELF binaries, with the latter returning
20 ``-ENOEXEC``. If the mismatch is detected during late onlining of a
21 64-bit-only CPU, then the onlining operation fails and the new CPU is
24 Surprisingly, these SoCs have been produced with the intention of
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/openbmc/linux/Documentation/userspace-api/media/
H A Dglossary.rst1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
9 The goal of this section is to standardize the terms used within the media
29 Part of the Linux Kernel that implements support for a hardware
34 transfer data in and out of a Kernel driver.
39 An API designed to control a subset of the :term:`Media Hardware`
48 optimized for the operational needs of digital signal processing.
51 **Field-programmable Gate Array**
56 See https://en.wikipedia.org/wiki/Field-programmable_gate_array.
59 A subset of the :term:`Media Hardware`. For example an :term:`I²C` or
64 A group of :term:`hardware components <Hardware Component>` that
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/openbmc/qemu/docs/specs/
H A Dppc-spapr-hcalls.rst5 When used with the ``pseries`` machine type, ``qemu-system-ppc64`` implements
6 a set of hypervisor calls (a.k.a. hcalls) defined in the Linux on Power
7 Architecture Reference ([LoPAR]_) document. This document is a subset of the
11 The subset in LoPAR is selected based on the requirements of Linux as a guest.
23 RTAS stands for Run-Time Abstraction Sercies and is a set of runtime services
25 predates the existence of hypervisors (it was originally an extension to Open
30 "firmware" blob in the guest is a small stub of a few instructions which
37 ``r4``: Guest physical address of RTAS parameter block.
51 only has access to a subset of memory and no I/Os.
53 PAPR and LoPAR provides a set of hypervisor calls to perform cacheable or
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/openbmc/linux/drivers/irqchip/
H A Dirq-mvebu-icu.c5 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
7 * This file is licensed under the terms of the GNU General Public
9 * warranty of any kind, whether express or implied.
23 #include <dt-bindings/interrupt-controller/mvebu-icu.h>
75 const struct mvebu_icu_subset_data *subset = msi_data->subset_data; in mvebu_icu_init() local
77 if (atomic_cmpxchg(&msi_data->initialized, false, true)) in mvebu_icu_init()
81 writel_relaxed(msg[0].address_hi, icu->base + subset->offset_set_ah); in mvebu_icu_init()
82 writel_relaxed(msg[0].address_lo, icu->base + subset->offset_set_al); in mvebu_icu_init()
84 if (subset->icu_group != ICU_GRP_NSR) in mvebu_icu_init()
87 /* Set 'CLEAR' ICU SPI message address in AP (level-MSI only) */ in mvebu_icu_init()
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/openbmc/linux/security/apparmor/
H A Dfile.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * This file contains AppArmor mediation of files
7 * Copyright (C) 1998-2008 Novell/SUSE
8 * Copyright 2009-2010 Canonical Ltd.
40 * file_audit_cb - call back for file specific audit fields
42 * @va: audit struct to audit values of (NOT NULL)
48 kuid_t fsuid = ad->subj_cred ? ad->subj_cred->fsuid : current_fsuid(); in file_audit_cb()
51 if (ad->request & AA_AUDIT_FILE_MASK) { in file_audit_cb()
53 map_mask_to_chr_mask(ad->request)); in file_audit_cb()
56 if (ad->denied & AA_AUDIT_FILE_MASK) { in file_audit_cb()
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/openbmc/linux/drivers/net/ethernet/mellanox/mlx5/core/
H A Dirq_affinity.c1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
10 pool->irqs_per_cpu[cpu]--; in cpu_put()
15 pool->irqs_per_cpu[cpu]++; in cpu_get()
22 int best_cpu = -1; in cpu_get_least_loaded()
27 if (!pool->irqs_per_cpu[cpu]) { in cpu_get_least_loaded()
33 if (pool->irqs_per_cpu[cpu] < pool->irqs_per_cpu[best_cpu]) in cpu_get_least_loaded()
36 if (best_cpu == -1) { in cpu_get_least_loaded()
38 mlx5_core_err(pool->dev, "NO online CPUs in req_mask (%*pbl)\n", in cpu_get_least_loaded()
42 pool->irqs_per_cpu[best_cpu]++; in cpu_get_least_loaded()
55 err = xa_alloc(&pool->irqs, &irq_index, NULL, pool->xa_num_irqs, GFP_KERNEL); in irq_pool_request_irq()
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/openbmc/linux/tools/perf/pmu-events/arch/x86/graniterapids/
H A Dfrontend.json3 … a subset of the Topdown Slots event that were no operation was delivered to the back-end pipeline…
6subset of the Topdown Slots event that were no operation was delivered to the back-end pipeline du…
H A Dpipeline.json15 …sprediction occurs when the processor incorrectly predicts the destination of the branch. When th…
21 …"PublicDescription": "Counts the number of reference cycles when the core is not in a halt state. …
29 …"PublicDescription": "Counts the number of reference cycles when the core is not in a halt state. …
36 …"PublicDescription": "Counts the number of core cycles while the thread is not in a halt state. Th…
44 …"PublicDescription": "This is an architectural event that counts the number of thread cycles while…
48 "BriefDescription": "Number of instructions retired. Fixed Counter - architectural event",
51 …"PublicDescription": "Counts the number of X86 instructions retired - an Architectural PerfMon eve…
56 "BriefDescription": "Number of instructions retired. General Counter - architectural event",
60 …"PublicDescription": "Counts the number of X86 instructions retired - an Architectural PerfMon eve…
67of times where store forwarding was prevented for a load operation. The most common case is a load…
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/openbmc/linux/tools/testing/selftests/net/forwarding/
H A Dethtool.sh2 # SPDX-License-Identifier: GPL-2.0
55 # Check that when each of the reported speeds is forced, the links come
57 local -a speeds_arr=($(common_speeds_get $h1 $h2 0 0))
68 log_test "force of same speed autoneg off"
72 ethtool -s $h2 autoneg on
73 ethtool -s $h1 autoneg on
82 local -a speeds_arr=($(different_speeds_get $h1 $h2 0 0))
94 log_test "force of different speeds autoneg off"
96 ethtool -s $h2 autoneg on
97 ethtool -s $h1 autoneg on
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/openbmc/linux/drivers/usb/gadget/legacy/
H A Dether.c1 // SPDX-License-Identifier: GPL-2.0+
3 * ether.c -- Ethernet gadget driver, with CDC and non-CDC options
5 * Copyright (C) 2003-2005,2008 David Brownell
6 * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger
26 * Ethernet gadget driver -- with CDC and non-CDC options
32 * this USB-IF standard as its open-systems interoperability solution;
36 * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new
40 * implement a "minimalist" vendor-agnostic CDC core: same framing, but
41 * link-level setup only requires activating the configuration. Only the
44 * systems may not. (This is a subset of CDC Ethernet.)
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/openbmc/linux/include/uapi/linux/sched/
H A Dtypes.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
17 * However, the possibility of specifying more than just a priority for
18 * the tasks may be useful for a wide variety of application fields, e.g.,
27 * A subset of sched_attr attributes specifies the
30 * @size size of the structure, for fwd/bwd compat.
37 * predefined set of flags via the attribute:
41 * Sporadic Time-Constrained Task Attributes
44 * A subset of sched_attr attributes allows to describe a so-called
45 * sporadic time-constrained task.
48 * - the activation period or minimum instance inter-arrival time;
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/openbmc/qemu/docs/devel/
H A Dkconfig.rst7 QEMU is a very versatile emulator; it can be built for a variety of
9 time different targets can share large amounts of code. For example,
13 SCSI adapters. Arm, s390 and x86 boards can all present a virtio-blk
16 Each QEMU target enables a subset of the boards, devices and buses that
18 only links a small subset of the files that form QEMU's source code;
21 QEMU uses a simple domain-specific language to describe the dependencies
25 architecture of the hardware emulation subsystems. Boards only have
30 * users can easily build reduced versions of QEMU that support only a subset
31 of boards or devices. For example, by default most targets will include
36 This domain-specific language is based on the Kconfig language that
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/openbmc/qemu/target/i386/whpx/
H A Dwhpx-accel-ops.h6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
26 /* state subset only touched by the VCPU itself during runtime */
28 /* state subset modified during VCPU reset */
/openbmc/linux/tools/perf/pmu-events/arch/x86/broadwellx/
H A Duncore-cache.json8of entries successfully inserted into the TOR that match qualifications specified by the subevent…
19of entries successfully inserted into the TOR that match qualifications specified by the subevent…
25 …"BriefDescription": "LLC misses - demand and prefetch data reads - excludes LLC prefetches. Derive…
30of entries successfully inserted into the TOR that match qualifications specified by the subevent…
41of entries successfully inserted into the TOR that match qualifications specified by the subevent…
52of entries successfully inserted into the TOR that match qualifications specified by the subevent…
63of entries successfully inserted into the TOR that match qualifications specified by the subevent…
74of entries successfully inserted into the TOR that match qualifications specified by the subevent…
80 …"BriefDescription": "ItoM write misses (as part of fast string memcpy stores) + PCIe full line wri…
85of entries successfully inserted into the TOR that match qualifications specified by the subevent…
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/openbmc/linux/tools/perf/pmu-events/arch/x86/haswellx/
H A Duncore-cache.json8of entries successfully inserted into the TOR that match qualifications specified by the subevent…
19of entries successfully inserted into the TOR that match qualifications specified by the subevent…
25 …"BriefDescription": "LLC misses - demand and prefetch data reads - excludes LLC prefetches. Derive…
30of entries successfully inserted into the TOR that match qualifications specified by the subevent…
41of entries successfully inserted into the TOR that match qualifications specified by the subevent…
52of entries successfully inserted into the TOR that match qualifications specified by the subevent…
63of entries successfully inserted into the TOR that match qualifications specified by the subevent…
74of entries successfully inserted into the TOR that match qualifications specified by the subevent…
80 …"BriefDescription": "ItoM write misses (as part of fast string memcpy stores) + PCIe full line wri…
85of entries successfully inserted into the TOR that match qualifications specified by the subevent…
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/openbmc/linux/Documentation/netlink/specs/
H A Ddevlink.yaml1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
5 protocol: genetlink-legacy
10 -
12 name: sb-pool-type
14 -
16 -
19 attribute-sets:
20 -
22 name-prefix: devlink-attr-
24 -
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/openbmc/linux/kernel/
H A Dcred.c1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Task credentials management - see Documentation/security/credentials.rst
25 printk("[%-5.5s%5u] " FMT "\n", \
26 current->comm, current->pid, ##__VA_ARGS__)
31 no_printk("[%-5.5s%5u] " FMT "\n", \
32 current->comm, current->pid, ##__VA_ARGS__); \
38 /* init to 2 - one for init_task, one to ensure it is never freed */
66 * The RCU callback to actually dispose of a set of credentials
74 if (atomic_long_read(&cred->usage) != 0) in put_cred_rcu()
76 cred, atomic_long_read(&cred->usage)); in put_cred_rcu()
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/openbmc/linux/include/linux/ceph/
H A Dceph_frag.h1 /* SPDX-License-Identifier: GPL-2.0 */
6 * "Frags" are a way to describe a subset of a 32-bit number space,
8 * (subset of the number space) can be partitioned into 2^n sub-frags.
10 * Frags are encoded into a 32-bit word:
15 * We use the _most_ significant bits of the 24 bit value. This makes
25 (v & (0xffffffu << (24-b)) & 0xffffffu); in ceph_frag_make()
37 return (0xffffffu << (24-ceph_frag_bits(f))) & 0xffffffu; in ceph_frag_mask()
41 return 24 - ceph_frag_bits(f); in ceph_frag_mask_shift()
53 ceph_frag_value(f) | (i << (24 - newbits))); in ceph_frag_make_child()
/openbmc/qemu/qapi/
H A Dmachine-target.json1 # -*- Mode: Python -*-
4 # This work is licensed under the terms of the GNU GPL, version 2 or later.
5 # See the COPYING file in the top-level directory.
7 { 'include': 'machine-common.json' }
14 # A CPU model consists of the name of a CPU definition, to which delta
20 # @name: the name of the CPU definition the model is based on
22 # @props: a dictionary of QOM properties to be applied
33 # An enumeration of CPU model expansion types.
35 # @static: Expand to a static CPU model, a combination of a static
38 # same, independent of QEMU version, machine type, machine
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/openbmc/linux/Documentation/i2c/
H A Dsummary.rst6 a protocol developed by Philips. It is a slow two-wire protocol (variable
8 an inexpensive bus for connecting many types of devices with infrequent or
14 The latest official I2C specification is the `"I2C-bus specification and user
16 published by NXP Semiconductors. However, you need to log-in to the site to
17 access the PDF. An older version of the specification (revision 6) is archived
18 `here <https://web.archive.org/web/20210813122132/https://www.nxp.com/docs/en/user-guide/UM10204.pd…
21 a subset of I2C protocols and signaling. Many I2C devices will work on an
27 Because the SMBus is mostly a subset of the generalized I2C bus, we can
39 .. kernel-figure:: i2c_bus.svg
49 whole class of I2C adapters. Each specific adapter driver either depends on
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/openbmc/linux/Documentation/dev-tools/
H A Dkselftest.rst5 The kernel contains a set of "self tests" under the tools/testing/selftests/
23 On some systems, hot-plug tests could hang forever waiting for cpu and
24 memory to be ready to be offlined. A special hot-plug target is created
25 to run the full range of hot-plug tests. In default mode, hot-plug tests run
26 in safe mode with a limited scope. In limited mode, cpu-hotplug test is
28 hotplug test is run on 2% of hotplug capable memory instead of 10%.
40 $ make -C tools/testing/selftests
44 $ make -C tools/testing/selftests run_tests
54 are supported. In both cases the working directory must be the root of the
55 kernel src. This is applicable to "Running a subset of selftests" section
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/openbmc/linux/tools/perf/pmu-events/arch/x86/jaketown/
H A Duncore-cache.json13 …ed in Counter 0. The filtering available is found in the control register - threshold, invert an…
27 …er of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. …
36 …er of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. …
45 …er of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. …
54 …er of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. …
63 …"PublicDescription": "Counts the number of lines that were victimized on a fill. This can be filt…
72 …"PublicDescription": "Counts the number of lines that were victimized on a fill. This can be filt…
81 …"PublicDescription": "Counts the number of lines that were victimized on a fill. This can be filt…
90 …"PublicDescription": "Counts the number of lines that were victimized on a fill. This can be filt…
99 …"PublicDescription": "Counts the number of lines that were victimized on a fill. This can be filt…
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/openbmc/linux/Documentation/netlink/
H A Dgenetlink.yaml1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
3 ---
4 $id: http://kernel.org/schemas/netlink/genetlink-legacy.yaml#
5 $schema: https://json-schema.org/draft-07/schema
12 len-or-define:
14 pattern: ^[0-9A-Za-z_]+( - 1)?$
19 description: Specification of a genetlink protocol
21 required: [ name, doc, attribute-sets, operations ]
25 description: Name of the genetlink family.
36 uapi-header:
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/openbmc/linux/tools/testing/selftests/proc/
H A Dproc-subset-pid.c9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * Test that "mount -t proc -o subset=pid" hides everything but pids,
18 * /proc/self and /proc/thread-self.
42 if (unshare(CLONE_NEWNS) == -1) { in make_private_proc()
48 if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) == -1) { in make_private_proc()
51 if (mount(NULL, "/proc", "proc", 0, "subset=pid") == -1) { in make_private_proc()
88 if (streq(de->d_name, ".")) { in main()
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