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/linux/drivers/irqchip/
H A Dqcom-pdc.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
47 #define pin_to_hwirq(r, p) ((r)->parent_base + (p) - (r)->pin_base)
78 case 0 ... 1: in pdc_x1e_irq_enable_write()
79 /* Use previous DRV (client) region and shift to bank 3-4 */ in pdc_x1e_irq_enable_write()
83 case 2 ... 4: in pdc_x1e_irq_enable_write()
84 /* Use our own region and shift to bank 0-2 */ in pdc_x1e_irq_enable_write()
86 bank -= 2; in pdc_x1e_irq_enable_write()
88 case 5: in pdc_x1e_irq_enable_write()
129 __pdc_enable_intr(d->hwirq, on); in pdc_enable_intr()
[all …]
H A Dirq-mst-intc.c1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
4 * Author Mark-PK Tsai <mark-pk.tsai@mediatek.com>
49 raw_spin_lock_irqsave(&cd->lock, flags); in mst_set_irq()
50 val = readw_relaxed(cd->base + offset) | mask; in mst_set_irq()
51 writew_relaxed(val, cd->base + offset); in mst_set_irq()
52 raw_spin_unlock_irqrestore(&cd->lock, flags); in mst_set_irq()
65 raw_spin_lock_irqsave(&cd->lock, flags); in mst_clear_irq()
66 val = readw_relaxed(cd->base + offset) & ~mask; in mst_clear_irq()
67 writew_relaxed(val, cd->base + offset); in mst_clear_irq()
68 raw_spin_unlock_irqrestore(&cd->lock, flags); in mst_clear_irq()
[all …]
/linux/Documentation/security/
H A Dself-protection.rst2 Kernel Self-Protection
5 Kernel self-protection is the design and implementation of systems and
13 In the worst-case scenario, we assume an unprivileged local attacker
16 but with systems in place that defend against the worst case we'll
23 The goals for successful self-protection systems would be that they
24 are effective, on by default, require no opt-in by developers, have no
36 from limiting the exposed APIs available to userspace, making in-kernel
41 --------------------------------
47 Executable code and read-only data must not be writable
61 writable, data is not executable, and read-only data is neither writable
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/linux/Documentation/userspace-api/media/v4l/
H A Dcolorspaces.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
21 the human eye has color receptors that are sensitive to three different
23 color. Be glad you are not a mantis shrimp as those are sensitive to 12
60 colors are specified with lower case 'x' and 'y', then the CIE xyY
61 colorspace is used. Upper case 'X' and 'Y' refer to the CIE XYZ
98 the non-linear component value, which is a closer match to the
99 non-linear performance of both the eye and displays. Linear component
100 values are denoted RGB, non-linear are denoted as R'G'B'. In general
103 provide linear RGB colors or to use the built-in openGL support to apply
107 non-linear R'G'B' to non-linear Y'CbCr. This function is determined by
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H A Dext-ctrls-image-source.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _image-source-controls:
10 The Image Source control class is intended for low-level control of
16 .. _image-source-control-id:
29 same sub-device.
59 The unit cell consists of the whole area of the pixel, sensitive and
60 non-sensitive.
65 .. flat-table:: struct v4l2_area
66 :header-rows: 0
67 :stub-columns: 0
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/linux/Documentation/power/
H A Dswsusp.rst17 [this is actually same case as above]
47 - If you feel ACPI works pretty well on your system, you might try::
51 - If you would like to write hibernation image to swap and then suspend
56 - If you have SATA disks, you'll need recent kernels with SATA suspend
58 are built into kernel -- not modules. [There's way to make
68 - The resume process checks for the presence of the resume device,
72 - The resume process may be triggered in two ways:
81 read-only) otherwise data may be corrupted.
87 Last revised: 2003-10-20 by Pavel Machek
90 -------------------------
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/linux/fs/efivarfs/
H A Dsuper.c1 // SPDX-License-Identifier: GPL-2.0-only
32 case EFIVAR_OPS_RDONLY: in efivarfs_ops_notifier()
33 sfi->sb->s_flags |= SB_RDONLY; in efivarfs_ops_notifier()
35 case EFIVAR_OPS_RDWR: in efivarfs_ops_notifier()
36 sfi->sb->s_flags &= ~SB_RDONLY; in efivarfs_ops_notifier()
52 inode_init_once(&entry->vfs_inode); in efivarfs_alloc_inode()
53 entry->removed = false; in efivarfs_alloc_inode()
55 return &entry->vfs_inode; in efivarfs_alloc_inode()
67 struct super_block *sb = root->d_sb; in efivarfs_show_options()
68 struct efivarfs_fs_info *sbi = sb->s_fs_info; in efivarfs_show_options()
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/linux/arch/arm64/kvm/vgic/
H A Dvgic-v2.c1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/irqchip/arm-gic.h>
12 #include "vgic-mmio.h"
33 struct vgic_v2_cpu_if *cpuif = &vcpu->arch.vgic_cpu.vgic_v2; in vgic_v2_configure_hcr()
35 cpuif->vgic_hcr = GICH_HCR_EN; in vgic_v2_configure_hcr()
38 cpuif->vgic_hcr |= GICH_HCR_NPIE; in vgic_v2_configure_hcr()
40 cpuif->vgic_hcr |= GICH_HCR_LRENPIE; in vgic_v2_configure_hcr()
42 cpuif->vgic_hcr |= GICH_HCR_UIE; in vgic_v2_configure_hcr()
44 cpuif->vgic_hcr |= (cpuif->vgic_vmcr & GICH_VMCR_ENABLE_GRP0_MASK) ? in vgic_v2_configure_hcr()
46 cpuif->vgic_hcr |= (cpuif->vgic_vmcr & GICH_VMCR_ENABLE_GRP1_MASK) ? in vgic_v2_configure_hcr()
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/linux/fs/ntfs3/
H A Dupcase.c1 // SPDX-License-Identifier: GPL-2.0
4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
19 return chr - ('a' - 'A'); in upcase_unicode_char()
30 * - Case insensitive
31 * - If name equals and 'bothcases' then
32 * - Case sensitive
33 * 'Straight way' code scans input names twice in worst case.
46 for (; len; s1++, s2++, len--) { in ntfs_cmp_names()
47 diff1 = le16_to_cpu(*s1) - le16_to_cpu(*s2); in ntfs_cmp_names()
55 return l1 - l2; in ntfs_cmp_names()
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/linux/Documentation/admin-guide/pm/
H A Dintel_uncore_frequency_scaling.rst1 .. SPDX-License-Identifier: GPL-2.0
8 :Copyright: |copy| 2022-2023 Intel Corporation
13 ------------
23 Users may have some latency sensitive workloads where they do not want any
30 ---------------
45 This is a read-only attribute. If users adjust max_freq_khz,
50 This is a read-only attribute. If users adjust min_freq_khz,
63 -----------------------------------------------------------------
119 directory with the same package id will be updated. In this case user can
128 -------------------------------
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/linux/fs/ntfs/
H A Ddir.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2001-2007 Anton Altaparmakov
27 * ntfs_lookup_inode_by_name - find an inode in a directory given its name
37 * is a 64-bit number containing the sequence number.
40 * particular if the inode is not found -ENOENT is returned. Note that you
47 * Note, we look for a case sensitive match first but we also look for a case
48 * insensitive match at the same time. If we find a case insensitive match, we
49 * save that for the case that we don't find an exact match, where we return
50 * the case insensitive match and setup @res (which we allocate!) with the mft
59 * Locking: - Caller must hold i_mutex on the directory.
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/linux/arch/arm/kernel/
H A Dsigreturn_codes.S1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * sigreturn_codes.S - code sinpets for sigreturn syscalls
5 * Created by: Victor Kamensky, 2013-08-13
10 #include <asm/asm-offsets.h>
19 * need two 16-bit instructions in .thumb encoding
23 * arch/arm/kernel/signal.c is very sensitive to layout of these code
28 * In CPU_THUMBONLY case kernel arm opcodes are not allowed.
29 * Note in this case codes skips those instructions but it uses .org
80 ARM_OK( mov r7, #(__NR_sigreturn - __NR_SYSCALL_BASE) )
85 movs r7, #(__NR_sigreturn - __NR_SYSCALL_BASE)
[all …]
/linux/arch/x86/kernel/
H A Dmpparse.c1 // SPDX-License-Identifier: GPL-2.0
4 * compliant MP-table parsing routines.
45 while (len--) in mpf_checksum()
55 topology_register_apic(m->apicid, CPU_ACPIID_INVALID, m->cpuflag & CPU_ENABLED); in MP_processor_info()
56 if (!(m->cpuflag & CPU_ENABLED)) in MP_processor_info()
59 if (m->cpuflag & CPU_BOOTPROCESSOR) in MP_processor_info()
60 bootup_cpu = " (Bootup-CPU)"; in MP_processor_info()
62 pr_info("Processor #%d%s\n", m->apicid, bootup_cpu); in MP_processor_info()
69 memcpy(str, m->bustype, 6); in mpc_oem_bus_info()
71 apic_pr_verbose("Bus #%d is %s\n", m->busid, str); in mpc_oem_bus_info()
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/linux/Documentation/virt/hyperv/
H A Dcoco.rst1 .. SPDX-License-Identifier: GPL-2.0
5 Hyper-V can create and run Linux guests that are Confidential Computing
9 CoCo VMs on Hyper-V share the generic CoCo VM threat model and security
10 objectives described in Documentation/security/snp-tdx-threat-model.rst. Note
11 that Hyper-V specific code in Linux refers to CoCo VMs as "isolated VMs" or
14 A Linux CoCo VM on Hyper-V requires the cooperation and interaction of the
19 * The hardware runs a version of Windows/Hyper-V with support for CoCo VMs
25 * AMD processor with SEV-SNP. Hyper-V does not run guest VMs with AMD SME,
26 SEV, or SEV-ES encryption, and such encryption is not sufficient for a CoCo
27 VM on Hyper-V.
[all …]
/linux/Documentation/filesystems/nfs/
H A Dnfsd-maintainer-entry-profile.rst4 A Maintainer Entry Profile supplements the top-level process
12 --------
14 protocols that enable access to files across a set of network-
20 kernel. An in-kernel NFS server has fast access to files stored
26 ------------
27 The linux-nfs@vger.kernel.org mailing list is a public list. Its
32 The linux-nfs mailing list is archived on `lore.kernel.org <https://lore.kernel.org/linux-nfs/>`_.
37 --------------
38 If you experience an NFSD-related bug on a distribution-built
42 linux-nfs@vger.kernel.org mailing list, where some active triage
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/linux/Documentation/admin-guide/
H A Dkernel-parameters.rst1 .. SPDX-License-Identifier: GPL-2.0
5 The kernel's command-line parameters
11 punctuation and sorting digits before letters in a case insensitive
14 The kernel parses parameters from the kernel command line up to "``--``";
18 Everything after "``--``" is passed as an argument to init.
33 "modinfo -p ${modulename}" shows a current list of all parameters of a loadable
37 ``echo -n ${value} > /sys/module/${modulename}/parameters/${parm}``.
40 ----------------
44 log_buf_len=1M print-fatal-signals=1
48 log-buf-len=1M print_fatal_signals=1
[all …]
/linux/arch/x86/kvm/
H A Di8259.c4 * Copyright (c) 2003-2004 Fabrice Bellard
47 __acquires(&s->lock) in pic_lock()
49 spin_lock(&s->lock); in pic_lock()
53 __releases(&s->lock) in pic_unlock()
55 bool wakeup = s->wakeup_needed; in pic_unlock()
59 s->wakeup_needed = false; in pic_unlock()
61 spin_unlock(&s->lock); in pic_unlock()
64 kvm_for_each_vcpu(i, vcpu, s->kvm) { in pic_unlock()
76 s->isr &= ~(1 << irq); in pic_clear_isr()
77 if (s != &s->pics_state->pics[0]) in pic_clear_isr()
[all …]
/linux/tools/testing/selftests/kvm/arm64/
H A Dvgic_irq.c1 // SPDX-License-Identifier: GPL-2.0
3 * vgic_irq.c - Test userspace injection of IRQs
37 * 0x00 (highest priority) - 0xF8 (lowest priority), in steps of 8
39 * Note that these macros will still be correct in the case that KVM implements
45 #define LOWEST_PRIO (KVM_NUM_PRIOS - 1)
47 #define IRQ_DEFAULT_PRIO (LOWEST_PRIO - 1)
82 kvm_inject_call(cmd, intid, num, -1 /* not used */, expect_failure)
126 for ((f) = (t); (f)->cmd; (f)++)
130 if ((args)->kvm_supports_irqfd || (f)->cmd != KVM_INJECT_IRQFD)
236 for (i = 0; i < args->nr_irqs; i++) in reset_priorities()
[all …]
/linux/arch/powerpc/platforms/pseries/
H A Dhvcserver.c1 // SPDX-License-Identifier: GPL-2.0-or-later
28 * functions aren't performance sensitive, so this conversion isn't an
34 case H_SUCCESS: in hvcs_convert()
36 case H_PARAMETER: in hvcs_convert()
37 return -EINVAL; in hvcs_convert()
38 case H_HARDWARE: in hvcs_convert()
39 return -EIO; in hvcs_convert()
40 case H_BUSY: in hvcs_convert()
41 case H_LONG_BUSY_ORDER_1_MSEC: in hvcs_convert()
42 case H_LONG_BUSY_ORDER_10_MSEC: in hvcs_convert()
[all …]
/linux/Documentation/devicetree/bindings/iio/pressure/
H A Dhoneywell,mprls0025pa.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andreas Klinger <ak@it-klinger.de>
11 - Petre Rodan <petre.rodan@subdimension.ro>
26 the pressure values can be specified manually via honeywell,pmin-pascal and
27 honeywell,pmax-pascal.
35 https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/
36 products/sensors/pressure-sensors/board-mount-pressure-sensors/
37 micropressure-mpr-series/documents/
[all …]
H A Dhoneywell,hsc030pa.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
23 pressure-triplet (directly extracted from the part number) or in case it's
27 by the sensor. pmin-pascal and pmax-pascal corespond to the minimum and
30 Please note that in case of an SPI-based sensor, the clock signal should not
34 …-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/bo…
35 …-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/bo…
38 - Petre Rodan <petre.rodan@subdimension.ro>
47 honeywell,transfer-function:
[all …]
/linux/drivers/gpio/
H A Dgpio-rcar.c1 // SPDX-License-Identifier: GPL-2.0
3 * Renesas R-Car GPIO Support
71 return ioread32(p->base + offs); in gpio_rcar_read()
77 iowrite32(value, p->base + offs); in gpio_rcar_write()
122 * "Setting Edge-Sensitive Interrupt Input Mode" and in gpio_rcar_config_interrupt_input_mode()
123 * "Setting Level-Sensitive Interrupt Input Mode" in gpio_rcar_config_interrupt_input_mode()
126 raw_spin_lock_irqsave(&p->lock, flags); in gpio_rcar_config_interrupt_input_mode()
135 if (p->info.has_both_edge_trigger) in gpio_rcar_config_interrupt_input_mode()
141 /* Write INTCLR in case of edge trigger */ in gpio_rcar_config_interrupt_input_mode()
145 raw_spin_unlock_irqrestore(&p->lock, flags); in gpio_rcar_config_interrupt_input_mode()
[all …]
/linux/drivers/gpu/drm/etnaviv/
H A Detnaviv_cmd_parser.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2015-2018 Etnaviv Project
93 if (state->num_relocs && state->relocs->submit_offset < buf_offset) { in etnaviv_warn_if_non_sensitive()
94 dev_warn_once(state->gpu->dev, in etnaviv_warn_if_non_sensitive()
95 "%s: relocation for non-sensitive state 0x%x at offset %u\n", in etnaviv_warn_if_non_sensitive()
97 state->relocs->submit_offset); in etnaviv_warn_if_non_sensitive()
98 while (state->num_relocs && in etnaviv_warn_if_non_sensitive()
99 state->relocs->submit_offset < buf_offset) { in etnaviv_warn_if_non_sensitive()
100 state->relocs++; in etnaviv_warn_if_non_sensitive()
101 state->num_relocs--; in etnaviv_warn_if_non_sensitive()
[all …]
/linux/Documentation/misc-devices/
H A Dlis3lv02d.rst12 - Yan Burman <burman.yan@gmail.com>
13 - Eric Piel <eric.piel@tremplin-utc.net>
17 -----------
31 - 3D position that the accelerometer reports. Format: "(x,y,z)"
33 - read reports the sampling rate of the accelerometer device in HZ.
37 - performs selftest for the chip as specified by chip manufacturer.
40 the laptop to act as a pinball machine-esque joystick. Joystick device can be
42 By default output values are scaled between -32768 .. 32767. In joystick raw
63 acts similar to /dev/rtc and reacts on free-fall interrupts received
66 result is number of free-fall interrupts since the last successful
[all …]
/linux/tools/perf/scripts/python/
H A Dexported-sql-viewer.py2 # SPDX-License-Identifier: GPL-2.0
3 # exported-sql-viewer.py: view data from sql database
4 # Copyright (c) 2014-2018, Intel Corporation.
7 # export-to-sqlite.py or the export-to-postgresql.py script. Refer to those
11 # call-graph can be displayed for the pt_example database like this:
13 # python tools/perf/scripts/python/exported-sql-viewer.py pt_example
18 # python tools/perf/scripts/python/exported-sql-viewer.py "hostname=myhost username=myuser password…
20 # The result is a GUI window with a tree representing a context-sensitive
21 # call-graph. Expanding a couple of levels of the tree and adjusting column
26 # v- ls
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