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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.
45 #define pin_to_hwirq(r, p) ((r)->parent_base + (p) - (r)->pin_base)
88 __pdc_enable_intr(d->hwirq, on); in pdc_enable_intr()
110 * Level sensitive active low LOW
111 * Rising edge sensitive NOT USED
112 * Falling edge sensitive LOW
113 * Dual Edge sensitive NOT USED
114 * Level sensitive active High HIGH
115 * Falling Edge sensitive NOT USED
[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
[all …]
/linux/fs/efivarfs/
H A Dsuper.c1 // SPDX-License-Identifier: GPL-2.0-only
29 case EFIVAR_OPS_RDONLY: in efivarfs_ops_notifier()
30 sfi->sb->s_flags |= SB_RDONLY; in efivarfs_ops_notifier()
32 case EFIVAR_OPS_RDWR: in efivarfs_ops_notifier()
33 sfi->sb->s_flags &= ~SB_RDONLY; in efivarfs_ops_notifier()
49 struct super_block *sb = root->d_sb; in efivarfs_show_options()
50 struct efivarfs_fs_info *sbi = sb->s_fs_info; in efivarfs_show_options()
51 struct efivarfs_mount_opts *opts = &sbi->mount_opts; in efivarfs_show_options()
53 if (!uid_eq(opts->uid, GLOBAL_ROOT_UID)) in efivarfs_show_options()
55 from_kuid_munged(&init_user_ns, opts->uid)); in efivarfs_show_options()
[all …]
/linux/Documentation/userspace-api/media/v4l/
H A Dext-ctrls-image-source.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _image-source-controls:
9 The Image Source control class is intended for low-level control of
15 .. _image-source-control-id:
28 same sub-device.
58 The unit cell consists of the whole area of the pixel, sensitive and
59 non-sensitive.
64 .. flat-table:: struct v4l2_area
65 :header-rows: 0
66 :stub-columns: 0
[all …]
H A Dcolorspaces.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
20 the human eye has color receptors that are sensitive to three different
22 color. Be glad you are not a mantis shrimp as those are sensitive to 12
59 colors are specified with lower case 'x' and 'y', then the CIE xyY
60 colorspace is used. Upper case 'X' and 'Y' refer to the CIE XYZ
97 the non-linear component value, which is a closer match to the
98 non-linear performance of both the eye and displays. Linear component
99 values are denoted RGB, non-linear are denoted as R'G'B'. In general
102 provide linear RGB colors or to use the built-in openGL support to apply
106 non-linear R'G'B' to non-linear Y'CbCr. This function is determined by
[all …]
/linux/arch/arm64/kvm/vgic/
H A Dvgic-v2.c1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/irqchip/arm-gic.h>
31 struct vgic_v2_cpu_if *cpuif = &vcpu->arch.vgic_cpu.vgic_v2; in vgic_v2_set_underflow()
33 cpuif->vgic_hcr |= GICH_HCR_UIE; in vgic_v2_set_underflow()
44 * - active bit is transferred as is
45 * - pending bit is
46 * - transferred as is in case of edge sensitive IRQs
47 * - set to the line-level (resample time) for level sensitive IRQs
51 struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu; in vgic_v2_fold_lr_state()
52 struct vgic_v2_cpu_if *cpuif = &vgic_cpu->vgic_v2; in vgic_v2_fold_lr_state()
[all …]
/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 -------------------------
[all …]
/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()
[all …]
/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 -----------------------------------------------------------------
109 directory with the same package id will be updated. In this case user can
118 -------------------------------
[all …]
/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)
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/linux/Documentation/staging/
H A Drpmsg.rst17 flavor of real-time OS.
19 OMAP4, for example, has dual Cortex-A9, dual Cortex-M3 and a C64x+ DSP.
20 Typically, the dual cortex-A9 is running Linux in a SMP configuration,
25 hardware accelerators, and therefore are often used to offload CPU-intensive
28 These remote processors could also be used to control latency-sensitive
34 hardware accessible only by the remote processor, reserving kernel-controlled
37 Rpmsg is a virtio-based messaging bus that allows kernel drivers to communicate
43 system's physical memory and other sensitive hardware resources (e.g. on
60 a unique rpmsg local address (a 32-bit integer). This way when inbound messages
80 In case there are no TX buffers available, the function will block until
[all …]
/linux/arch/loongarch/vdso/
H A Dvgetrandom-chacha.S1 // SPDX-License-Identifier: GPL-2.0
22 * 8-byte counter. Importantly does not spill to the stack. Its arguments
26 * a1: 32-byte key input
27 * a2: 8-byte counter input/output
28 * a3: number of 64-byte blocks to write to output
83 * The ABI requires s0-s9 saved, and sp aligned to 16-byte.
84 * This does not violate the stack-less requirement: no sensitive data
87 PTR_ADDI sp, sp, (-SZREG * 10) & STACK_ALIGN
107 /* state[0,1,2,3] = "expand 32-byte k" */
167 addi.w i, i, -1
[all …]
/linux/tools/testing/selftests/kvm/aarch64/
H A Dvgic_irq.c1 // SPDX-License-Identifier: GPL-2.0
3 * vgic_irq.c - Test userspace injection of IRQs
36 * 0x00 (highest priority) - 0xF8 (lowest priority), in steps of 8
38 * Note that these macros will still be correct in the case that KVM implements
44 #define LOWEST_PRIO (KVM_NUM_PRIOS - 1)
46 #define IRQ_DEFAULT_PRIO (LOWEST_PRIO - 1)
81 kvm_inject_call(cmd, intid, num, -1 /* not used */, expect_failure)
125 for ((f) = (t); (f)->cmd; (f)++)
129 if ((args)->kvm_supports_irqfd || (f)->cmd != KVM_INJECT_IRQFD)
235 for (i = 0; i < args->nr_irqs; i++) in reset_priorities()
[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()
[all …]
/linux/crypto/
H A Djitterentropy.c2 * Non-physical true random number generator based on timing jitter --
5 * Copyright Stephan Mueller <smueller@chronox.de>, 2015 - 2023
29 * the GNU General Public License, in which case the provisions of the GPL2 are
32 * the restrictions contained in a BSD-style copyright.)
54 … be compiled with optimizations. See documentation. Use the compiler switch -O0 for compiling jitt…
65 /* SHA3-256 is used as conditioner */
68 * of the RNG are marked as SENSITIVE. A user must not
71 void *hash_state; /* SENSITIVE hash state entropy pool */
72 __u64 prev_time; /* SENSITIVE Previous time stamp */
73 __u64 last_delta; /* SENSITIVE stuck test */
[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/arch/x86/kvm/
H A Di8259.c4 * Copyright (c) 2003-2004 Fabrice Bellard
45 __acquires(&s->lock) in pic_lock()
47 spin_lock(&s->lock); in pic_lock()
51 __releases(&s->lock) in pic_unlock()
53 bool wakeup = s->wakeup_needed; in pic_unlock()
57 s->wakeup_needed = false; in pic_unlock()
59 spin_unlock(&s->lock); in pic_unlock()
62 kvm_for_each_vcpu(i, vcpu, s->kvm) { in pic_unlock()
74 s->isr &= ~(1 << irq); in pic_clear_isr()
75 if (s != &s->pics_state->pics[0]) in pic_clear_isr()
[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 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 spin_unlock_irqrestore(&p->lock, flags); in gpio_rcar_config_interrupt_input_mode()
[all …]
/linux/include/linux/
H A Dgenl_magic_struct.h1 /* SPDX-License-Identifier: GPL-2.0 */
30 * know about. This flag can be set in nlattr->nla_type to indicate that this
45 * @DRBD_F_SENSITIVE: Attribute includes sensitive information and must not be
59 * multi-include macro expansion magic starts here
172 * Magic: -"- unique numbers for top level attributes
173 * Magic: -"- unique numbers for nested attributes
182 case op_name:
186 case op_name:
192 case 0: in ct_assert_unique_operations()
205 case tag_number:
[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/arch/x86/entry/vdso/
H A Dvgetrandom-chacha.S1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2022-2024 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
16 * of blocks of output with a nonce of 0, taking an input key and 8-byte
20 * rsi: 32-byte key input
21 * rdx: 8-byte counter input/output
22 * rcx: number of 64-byte blocks to write to output
31 /* xmm registers are *not* callee-save. */
43 /* copy0 = "expand 32-byte k" */
160 /* output += 64, --nblocks */
168 /* Zero out the potentially sensitive regs, in case nothing uses these again. */

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