| /openbmc/linux/drivers/cpufreq/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
16 <file:Documentation/admin-guide/pm/cpufreq.rst>.
41 default CPU_FREQ_DEFAULT_GOV_SCHEDUTIL if (X86_INTEL_PSTATE || X86_AMD_PSTATE) && SMP
74 depends on !(X86_INTEL_PSTATE && SMP)
79 you to get a full dynamic frequency capable system by simply
80 loading your cpufreq low-level hardware driver.
87 depends on !(X86_INTEL_PSTATE && SMP)
92 you to get a full dynamic frequency capable system by simply
93 loading your cpufreq low-level hardware driver.
100 depends on SMP
[all …]
|
| H A D | Kconfig.x86 | 1 # SPDX-License-Identifier: GPL-2.0-only
12 select CPU_FREQ_GOV_SCHEDUTIL if SMP
30 <file:Documentation/admin-guide/pm/cpufreq_drivers.rst>.
33 module will be called pcc-cpufreq.
38 bool "AMD Processor P-State driver"
42 select CPU_FREQ_GOV_SCHEDUTIL if SMP
50 <file:Documentation/admin-guide/pm/amd-pstate.rst>.
55 int "AMD Processor P-State default mode"
60 Select the default mode the amd-pstate driver will use on
63 1 -> Disabled
[all …]
|
| /openbmc/linux/Documentation/devicetree/bindings/sram/ |
| H A D | sram.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic on-chip SRAM
10 - Rob Herring <robh@kernel.org>
19 Following the generic-names recommended practice, node names should
30 - mmio-sram
31 - amlogic,meson-gxbb-sram
32 - arm,juno-sram-ns
33 - atmel,sama5d2-securam
[all …]
|
| /openbmc/linux/arch/parisc/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
43 select GENERIC_ARCH_TOPOLOGY if SMP
44 select GENERIC_CPU_DEVICES if !SMP
69 select GENERIC_IRQ_MIGRATION if SMP
70 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
79 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
90 The PA-RISC microprocessor is designed by Hewlett-Packard and used
92 and later HP3000 series). The PA-RISC Linux project home page is
107 depends on SMP && PREEMPTION
135 depends on SMP
[all …]
|
| /openbmc/linux/arch/mips/include/asm/ |
| H A D | timex.h | 17 #include <asm/cpu-features.h>
19 #include <asm/cpu-type.h>
31 * Currently only used on SMP for scheduling.
37 * We know that all SMP capable CPUs have cycle counters.
82 * Like get_cycles - but where c0_count is not available we desperately
96 return (random_get_entropy_fallback() << 6) | (0x3f - c0_random); in random_get_entropy()
|
| /openbmc/linux/arch/ia64/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
45 select GENERIC_PENDING_IRQ if SMP
72 The Itanium Processor Family is Intel's 64-bit successor to
73 the 32-bit X86 line. The IA-64 Linux project has a home
75 <linux-ia64@vger.kernel.org>.
129 Select your IA-64 processor type. The default is Itanium.
130 This choice is safe for all IA-64 systems, but may not perform
147 This lets you select the page size of the kernel. For best IA-64
149 IA-32 compatibility, a page size of 4KB should be selected (the vast
150 majority of IA-32 binaries work perfectly fine with a larger page
[all …]
|
| /openbmc/linux/drivers/cpuidle/ |
| H A D | Kconfig.arm | 1 # SPDX-License-Identifier: GPL-2.0-only
13 at run-time through DT nodes. The CPUidle suspend backend is
24 It provides an idle driver that is capable of detecting and
28 - If the idle states are described with the non-hierarchical layout,
31 - If the idle states are described with the hierarchical layout,
56 define different C-states for little and big cores through the
85 bool "Cpu Idle Driver for the ST-E u8500 processors"
88 Select this to enable cpuidle for ST-E u8500 processors.
100 select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
114 select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
|
| /openbmc/linux/arch/arm/mach-omap2/ |
| H A D | omap-smp.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * OMAP4 SMP source file. It contains platform specific functions
4 * needed for the linux smp kernel.
11 * Platform file needed for the OMAP4 SMP. This file is based on arm
12 * realview smp platform.
17 #include <linux/smp.h>
19 #include <linux/irqchip/arm-gic.h>
25 #include "omap-secure.h"
26 #include "omap-wakeupgen.h"
87 * BIT(27) - Disables streaming. All write-allocate lines allocate in in omap5_erratum_workaround_801819()
[all …]
|
| /openbmc/linux/arch/arm/mach-exynos/ |
| H A D | exynos.c | 1 // SPDX-License-Identifier: GPL-2.0
5 // Copyright (c) 2010-2014 Samsung Electronics Co., Ltd.
15 #include <linux/soc/samsung/exynos-regs-pmu.h>
18 #include <asm/hardware/cache-l2x0.h>
33 .id = -1,
52 for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram") { in exynos_sysram_init()
64 for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram-ns") { in exynos_sysram_init()
80 if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid")) in exynos_fdt_map_chipid()
88 iodesc.length = be32_to_cpu(reg[1]) - 1; in exynos_fdt_map_chipid()
110 * Set or clear the USE_DELAYED_RESET_ASSERTION option. Used by smp code
[all …]
|
| /openbmc/linux/net/unix/ |
| H A D | scm.c | 1 // SPDX-License-Identifier: GPL-2.0
30 if (S_ISSOCK(inode->i_mode) && !(filp->f_mode & FMODE_PATH)) { in unix_get_socket()
32 const struct proto_ops *ops = READ_ONCE(sock->ops); in unix_get_socket()
33 struct sock *s = sock->sk; in unix_get_socket()
36 if (s && ops && ops->family == PF_UNIX) in unix_get_socket()
56 if (!u->inflight) { in unix_inflight()
57 BUG_ON(!list_empty(&u->link)); in unix_inflight()
58 list_add_tail(&u->link, &gc_inflight_list); in unix_inflight()
60 BUG_ON(list_empty(&u->link)); in unix_inflight()
62 u->inflight++; in unix_inflight()
[all …]
|
| /openbmc/u-boot/doc/ |
| H A D | README.arm64 | 1 U-Boot for arm64
5 The initial arm64 U-Boot port was developed before hardware was available,
7 These days U-Boot runs on a variety of 64-bit capable ARM hardware, from
13 1. U-Boot can run at any exception level it is entered in, it is
14 recommened to enter it in EL3 if U-Boot takes some responsibilities of a
16 or SMP bringup). U-Boot can be entered in EL2 when its main purpose is
20 2. U-Boot for arm64 is compiled with AArch64-gcc. AArch64-gcc
21 use rela relocation format, a tool(tools/relocate-rela) by Scott Wood
22 is used to encode the initial addend of rela to u-boot.bin. After running,
23 the U-Boot will be relocated to destination again.
[all …]
|
| /openbmc/linux/arch/xtensa/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
58 Xtensa processors are 32-bit RISC machines designed by Tensilica
63 a home page at <http://www.linux-xtensa.org/>.
102 def_bool $(success,test "$(shell,echo __XTENSA_EB__ | $(CC) -E -P -)" = 1)
108 …def_bool $(success,test "$(shell,echo __XTENSA_CALL0_ABI__ | $(CC) -mabi=call0 -E -P - 2>/dev/null…
117 bool "fsf - default (not generic) configuration"
121 bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
128 bool "dc233c - Diamond 233L Standard Core Rev.C (LE)"
164 ie: it supports a TLB with auto-loading, page protection.
221 byte and 2-byte access to memory attached to instruction bus.
[all …]
|
| /openbmc/linux/arch/sh/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
81 <http://www.linux-sh.org/>.
95 depends on SMP && PREEMPTION
214 prompt "Processor sub-type selection"
220 # SH-2 Processor Support
231 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
233 # SH-2A Processor Support
279 bool "Support MX-G processor"
283 Select MX-G if running on an R8A03022BG part.
285 # SH-3 Processor Support
[all …]
|
| /openbmc/linux/arch/arm64/kernel/ |
| H A D | hyp-stub.S | 1 /* SPDX-License-Identifier: GPL-2.0-only */
35 ventry elx_sync // Synchronous 64-bit EL1
36 ventry el1_irq_invalid // IRQ 64-bit EL1
37 ventry el1_fiq_invalid // FIQ 64-bit EL1
38 ventry el1_error_invalid // Error 64-bit EL1
40 ventry el1_sync_invalid // Synchronous 32-bit EL1
41 ventry el1_irq_invalid // IRQ 32-bit EL1
42 ventry el1_fiq_invalid // FIQ 32-bit EL1
43 ventry el1_error_invalid // Error 32-bit EL1
68 /* Someone called kvm_call_hyp() against the hyp-stub... */
[all …]
|
| /openbmc/linux/arch/powerpc/kvm/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
52 depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
122 processor, including emulating 32-bit processors on a 64-bit
148 bool "Detailed timing for hypervisor real-mode code (for POWER8)"
152 Calculate time taken for each vcpu in the real-mode guest entry,
157 kvm/vm#/vcpu#/timings. The overhead is of the order of 30 - 40
167 Old nested HV capable Linux guests have a bug where they don't
168 reflect the PMU in-use status of their L2 guest to the L0 host
175 in all nested-capable guest entry/exit.
184 Calculate elapsed time for every exit/enter cycle. A per-vcpu
[all …]
|
| /openbmc/linux/arch/powerpc/platforms/ |
| H A D | Kconfig.cputype | 1 # SPDX-License-Identifier: GPL-2.0
7 bool "64-bit kernel"
10 This option selects whether a 32-bit or a 64-bit kernel
282 default "-mtune=power10" if $(cc-option,-mtune=power10)
283 default "-mtune=power9" if $(cc-option,-mtune=power9)
284 default "-mtune=power8" if $(cc-option,-mtune=power8)
366 This option enables kernel support for larger than 32-bit physical
371 is platform-dependent.
387 any affect on a non-altivec cpu (it does, however add code to the
403 VSX (P7 and above), but does not have any affect on a non-VSX
[all …]
|
| /openbmc/linux/arch/powerpc/include/asm/ |
| H A D | mpic_msgr.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright 2011-2012, Meador Inge, Mentor Graphics Corporation.
11 #include <asm/smp.h>
69 * The given 32-bit message is written to the given message
75 out_be32(msgr->base, message); in mpic_msgr_write()
82 * Returns the 32-bit value currently in the given message register.
88 return in_be32(msgr->base); in mpic_msgr_read()
113 out_be32(msgr->base, 1 << get_hard_smp_processor_id(cpu_num)); in mpic_msgr_set_destination()
120 * 0 is returned if this message register is not capable of receiving
126 return msgr->irq; in mpic_msgr_get_irq()
|
| /openbmc/linux/arch/arm/mach-mstar/ |
| H A D | mstarv7.c | 1 // SPDX-License-Identifier: GPL-2.0
17 * In the u-boot code the area these registers are in is
22 * for both u-boot and linux share calls to "flush the miu pipe".
24 * the state is right before DMA capable devices try to read
85 return -EINVAL; in mstarv7_boot_secondary()
91 return -ENODEV; in mstarv7_boot_secondary()
128 .smp = smp_ops(mstarv7_smp_ops),
|
| /openbmc/linux/arch/x86/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
4 bool "64-bit kernel" if "$(ARCH)" = "x86"
7 Say yes to build a 64-bit kernel - formerly known as x86_64
8 Say no to build a 32-bit kernel - formerly known as i386
13 # Options that are inherently 32-bit kernel only:
27 # Options that are inherently 64-bi
423 config SMP global() config
[all...] |
| /openbmc/qemu/docs/about/ |
| H A D | deprecated.rst | 21 for pre-existing VM deployments. They should be scheduled for updating to a
23 should exclusively use a non-deprecated machine type, with use of the most
24 recent version highly recommended. Non-versioned machine types follow the
37 --------------------------------------
39 Short-form boolean options (since 6.0)
49 The replacement for the ``nodelay`` short-form boolean option is ``nodelay=on``
56 command-line less readable, especially when the argument itself consist of a
57 name and a value, e.g. ``-plugin plugin_name,arg="arg_name=arg_value"``.
58 Therefore, the usage of ``arg`` is redundant. Single-word arguments are treated
59 as short-form boolean values, and passed to plugins as ``arg_name=on``.
[all …]
|
| /openbmc/linux/arch/x86/kernel/ |
| H A D | vsmp_64.c | 1 // SPDX-License-Identifier: GPL-2.0-only
15 #include <linux/smp.h>
19 #include <asm/pci-direct.h>
32 /* set vSMP magic bits to indicate vSMP capable kernel */ in set_vsmp_ctl()
58 static int is_vsmp = -1;
75 if (is_vsmp != -1) in is_vsmp_box()
121 maxcpus = (topology & ((1 << node_shift) - 1)) + 1; in vsmp_cap_cpus()
138 apic->phys_pkg_id = apicid_phys_pkg_id; in vsmp_apic_post_init()
|
| /openbmc/qemu/docs/system/ |
| H A D | introduction.rst | 7 ---------------------------
12 Tiny Code Generator (TCG) capable of emulating many CPUs.
14 .. list-table:: Supported Accelerators
15 :header-rows: 1
17 * - Accelerator
18 - Host OS
19 - Host Architectures
20 * - KVM
21 - Linux
22 - Arm (64 bit only), MIPS, PPC, RISC-V, s390x, x86
[all …]
|
| /openbmc/linux/Documentation/admin-guide/ |
| H A D | tainted-kernels.rst | 2 ---------------
16 ('kernel oops') or a non-recoverable error ('kernel panic') and writes debug
29 Oops: 0002 [#1] SMP PTI
30 CPU: 0 PID: 4424 Comm: insmod Tainted: P W O 4.20.0-0.rc6.fc30 #1
43 a warning occurred (``W``), and an externally-built module was loaded (``O``).
53 decode that number is the script ``tools/debugging/kernel-chktaint``, which your
54 distribution might ship as part of a package called ``linux-tools`` or
55 ``kernel-tools``; if it doesn't you can download the script from
56 …git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/tools/debugging/kernel-chktaint>`_
57 and execute it with ``sh kernel-chktaint``, which would print something like
[all …]
|
| /openbmc/linux/kernel/time/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
21 # cycle update - x86/TSC misfeature
33 # Architecture can handle broadcast in a driver-agnostic way
113 will only trigger on an as-needed basis when the system is idle.
122 depends on SMP
139 the expense of some overhead in user <-> kernel transitions:
163 The major pre-requirement for full dynticks to work is to
196 hardware is not capable then this option only increases
207 The default is based on a half-second clocksource watchdog
|
| /openbmc/linux/Documentation/core-api/ |
| H A D | genericirq.rst | 7 :Copyright: |copy| 2005-2010: Thomas Gleixner
8 :Copyright: |copy| 2005-2006: Ingo Molnar
29 __do_IRQ() super-handler, which is able to deal with every type of
36 - Level type
38 - Edge type
40 - Simple type
44 - Fast EOI type
46 In the SMP world of the __do_IRQ() super-handler another type was
49 - Per CPU type
51 This split implementation of high-level IRQ handlers allows us to
[all …]
|