| /kernel/linux/linux-5.10/kernel/ |
| D | cpu.c | 1 /* CPU control.
17 #include <linux/cpu.h>
35 #include <linux/percpu-rwsem.h>
46 * cpuhp_cpu_state - Per cpu hotplug state storage
47 * @state: The current cpu state
52 * @single: Single callback invocation
53 * @bringup: Single callback bringup or teardown selector
54 * @cb_state: The state for a single callback (install/uninstall)
56 * @done_up: Signal completion to the issuer of the task for cpu-up
57 * @done_down: Signal completion to the issuer of the task for cpu-down
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| /kernel/linux/linux-6.6/kernel/ |
| D | cpu.c | 1 /* CPU control.
17 #include <linux/cpu.h>
36 #include <linux/percpu-rwsem.h>
48 * struct cpuhp_cpu_state - Per cpu hotplug state storage
49 * @state: The current cpu state
51 * @fail: Current CPU hotplug callback state
55 * @single: Single callback invocation
56 * @bringup: Single callback bringup or teardown selector
57 * @cpu: CPU number
58 * @node: Remote CPU node; for multi-instance, do a
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| /kernel/linux/linux-6.6/include/linux/ |
| D | cpu_pm.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
16 * When a CPU goes to a low power state that turns off power to the CPU's
25 * The notifications are split into two classes: CPU notifications and CPU
28 * CPU notifications apply to a single CPU and must be called on the affected
29 * CPU. They are used to save per-cpu context for affected blocks.
31 * CPU cluster notifications apply to all CPUs in a single power domain. They
41 /* A single cpu is entering a low power state */
44 /* A single cpu failed to enter a low power state */
47 /* A single cpu is exiting a low power state */
50 /* A cpu power domain is entering a low power state */
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| /kernel/linux/linux-5.10/include/linux/ |
| D | cpu_pm.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
16 * When a CPU goes to a low power state that turns off power to the CPU's
25 * The notifications are split into two classes: CPU notifications and CPU
28 * CPU notifications apply to a single CPU and must be called on the affected
29 * CPU. They are used to save per-cpu context for affected blocks.
31 * CPU cluster notifications apply to all CPUs in a single power domain. They
41 /* A single cpu is entering a low power state */
44 /* A single cpu failed to enter a low power state */
47 /* A single cpu is exiting a low power state */
50 /* A cpu power domain is entering a low power state */
[all …]
|
| /kernel/linux/linux-6.6/Documentation/tools/rtla/ |
| D | rtla-hwnoise.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 rtla-hwnoise
6 ------------------------------------------
7 Detect and quantify hardware-related noise
8 ------------------------------------------
22 of threads as a consequence, only non-maskable interrupts and hardware-related
38 In the example below, the **rtla hwnoise** tool is set to run on CPUs *1-7*
39 on a system with 8 cores/16 threads with hyper-threading enabled.
45 # rtla hwnoise -c 1-7 -T 1 -d 10m -q
46 Hardware-related Noise
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| /kernel/linux/linux-6.6/Documentation/driver-api/ |
| D | edac.rst | 5 ----------------------------------------
8 *sockets, *socket sets*, *banks*, *rows*, *chip-select rows*, *channels*,
32 A physical connector on the motherboard that accepts a single memory
43 It is typically the highest hierarchy on a Fully-Buffered DIMM memory
45 same branch can be used in single mode or in lockstep mode. When
50 of correcting more errors than on single mode.
52 * Single-channel
55 only. E. g. if the data is 64 bits-wide, the data flows to the CPU using
57 memories. FB-DIMM and RAMBUS use a different concept for channel, so
60 * Double-channel
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| /kernel/linux/linux-5.10/Documentation/driver-api/ |
| D | edac.rst | 5 ----------------------------------------
8 *sockets, *socket sets*, *banks*, *rows*, *chip-select rows*, *channels*,
32 A physical connector on the motherboard that accepts a single memory
43 It is typically the highest hierarchy on a Fully-Buffered DIMM memory
45 same branch can be used in single mode or in lockstep mode. When
50 of correcting more errors than on single mode.
52 * Single-channel
55 only. E. g. if the data is 64 bits-wide, the data flows to the CPU using
57 memories. FB-DIMM and RAMBUS use a different concept for channel, so
60 * Double-channel
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|
| /kernel/linux/linux-6.6/Documentation/arch/x86/ |
| D | topology.rst | 1 .. SPDX-License-Identifier: GPL-2.0
11 The architecture-agnostic topology definitions are in
12 Documentation/admin-guide/cputopology.rst. This file holds x86-specific
17 Needless to say, code should use the generic functions - this file is *only*
28 the past a socket always contained a single package (see below), but with the
35 - packages
36 - cores
37 - threads
48 Package-related topology information in the kernel:
50 - cpuinfo_x86.x86_max_cores:
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| D | tlb.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 1. Flush the entire TLB with a two-instruction sequence. This is
14 2. Use the invlpg instruction to invalidate a single page at a
32 4. The microarchitecture. The TLB has become a multi-level
34 expensive relative to single-page flushes.
53 Despite the fact that a single individual flush on x86 is
67 perf stat -e
68 cpu/event=0x8,umask=0x84,name=dtlb_load_misses_walk_duration/,
69 cpu/event=0x8,umask=0x82,name=dtlb_load_misses_walk_completed/,
70 cpu/event=0x49,umask=0x4,name=dtlb_store_misses_walk_duration/,
[all …]
|
| /kernel/linux/linux-5.10/Documentation/x86/ |
| D | topology.rst | 1 .. SPDX-License-Identifier: GPL-2.0
11 The architecture-agnostic topology definitions are in
12 Documentation/admin-guide/cputopology.rst. This file holds x86-specific
17 Needless to say, code should use the generic functions - this file is *only*
28 the past a socket always contained a single package (see below), but with the
35 - packages
36 - cores
37 - threads
48 Package-related topology information in the kernel:
50 - cpuinfo_x86.x86_max_cores:
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|
| D | tlb.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 1. Flush the entire TLB with a two-instruction sequence. This is
14 2. Use the invlpg instruction to invalidate a single page at a
32 4. The microarchitecture. The TLB has become a multi-level
34 expensive relative to single-page flushes.
53 Despite the fact that a single individual flush on x86 is
67 perf stat -e
68 cpu/event=0x8,umask=0x84,name=dtlb_load_misses_walk_duration/,
69 cpu/event=0x8,umask=0x82,name=dtlb_load_misses_walk_completed/,
70 cpu/event=0x49,umask=0x4,name=dtlb_store_misses_walk_duration/,
[all …]
|
| /kernel/linux/linux-5.10/arch/sparc/kernel/ |
| D | sun4d_smp.c | 1 // SPDX-License-Identifier: GPL-2.0
15 #include <linux/cpu.h>
73 /* Unblock the master CPU _only_ when the scheduler state in sun4d_cpu_pre_online()
74 * of all secondary CPUs will be up-to-date, so after in sun4d_cpu_pre_online()
79 local_ops->cache_all(); in sun4d_cpu_pre_online()
80 local_ops->tlb_all(); in sun4d_cpu_pre_online()
85 while (current_set[cpuid]->cpu != cpuid) in sun4d_cpu_pre_online()
98 current->active_mm = &init_mm; in sun4d_cpu_pre_online()
100 local_ops->cache_all(); in sun4d_cpu_pre_online()
101 local_ops->tlb_all(); in sun4d_cpu_pre_online()
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| D | leon_smp.c | 1 // SPDX-License-Identifier: GPL-2.0
2 /* leon_smp.c: Sparc-Leon SMP support.
27 #include <linux/cpu.h>
81 * go-ahead by setting the smp_commenced_mask and will wait without in leon_cpu_pre_online()
87 local_ops->cache_all(); in leon_cpu_pre_online()
88 local_ops->tlb_all(); in leon_cpu_pre_online()
96 current->active_mm = &init_mm; in leon_cpu_pre_online()
114 …printk(KERN_INFO "Note: SMP with snooping only works on 4k cache, found %dk(0x%x) on cpu %d, disab… in leon_configure_cache_smp()
122 … printk(KERN_INFO "Note: You have to enable snooping in the vhdl model cpu %d, disabling caches\n", in leon_configure_cache_smp()
128 local_ops->cache_all(); in leon_configure_cache_smp()
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| /kernel/linux/linux-6.6/arch/sparc/kernel/ |
| D | sun4d_smp.c | 1 // SPDX-License-Identifier: GPL-2.0
15 #include <linux/cpu.h>
73 /* Unblock the master CPU _only_ when the scheduler state in sun4d_cpu_pre_online()
74 * of all secondary CPUs will be up-to-date, so after in sun4d_cpu_pre_online()
79 local_ops->cache_all(); in sun4d_cpu_pre_online()
80 local_ops->tlb_all(); in sun4d_cpu_pre_online()
85 while (current_set[cpuid]->cpu != cpuid) in sun4d_cpu_pre_online()
98 current->active_mm = &init_mm; in sun4d_cpu_pre_online()
100 local_ops->cache_all(); in sun4d_cpu_pre_online()
101 local_ops->tlb_all(); in sun4d_cpu_pre_online()
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| D | leon_smp.c | 1 // SPDX-License-Identifier: GPL-2.0
2 /* leon_smp.c: Sparc-Leon SMP support.
27 #include <linux/cpu.h>
81 * go-ahead by setting the smp_commenced_mask and will wait without in leon_cpu_pre_online()
87 local_ops->cache_all(); in leon_cpu_pre_online()
88 local_ops->tlb_all(); in leon_cpu_pre_online()
96 current->active_mm = &init_mm; in leon_cpu_pre_online()
114 …printk(KERN_INFO "Note: SMP with snooping only works on 4k cache, found %dk(0x%x) on cpu %d, disab… in leon_configure_cache_smp()
122 … printk(KERN_INFO "Note: You have to enable snooping in the vhdl model cpu %d, disabling caches\n", in leon_configure_cache_smp()
128 local_ops->cache_all(); in leon_configure_cache_smp()
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| /kernel/linux/linux-6.6/fs/squashfs/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "SquashFS 4.0 - Squashed file system support"
7 Read-Only File System). Squashfs is a highly compressed read-only
16 Squashfs is intended for general read-only filesystem use, for
53 on the single buffer.
88 decompression. Each one exhibits various trade-offs between
89 decompression performance and CPU and memory usage.
91 If in doubt, select "Single threaded compression"
94 bool "Single threaded compression"
97 Traditionally Squashfs has used single-threaded decompression.
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| /kernel/linux/linux-5.10/fs/squashfs/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "SquashFS 4.0 - Squashed file system support"
7 Read-Only File System). Squashfs is a highly compressed read-only
16 Squashfs is intended for general read-only filesystem use, for
53 on the single buffer.
62 decompression. Each one exhibits various trade-offs between
63 decompression performance and CPU and memory usage.
65 If in doubt, select "Single threaded compression"
68 bool "Single threaded compression"
70 Traditionally Squashfs has used single-threaded decompression.
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| /kernel/linux/linux-5.10/tools/memory-model/Documentation/ |
| D | simple.txt | 2 memory-ordering lives simple, as is necessary for those whose domain
3 is complex. After all, there are bugs other than memory-ordering bugs,
4 and the time spent gaining memory-ordering knowledge is not available
5 for gaining domain knowledge. Furthermore Linux-kernel memory model
15 of MMIO-based device drivers will often need to use mb(), rmb(), and
22 Single-threaded code
25 In single-threaded code, there is no reordering, at least assuming
27 it is generally a mistake to assume your code will only run in a single
33 your code really is executed within a single thread that does not access
38 this lock at a given time, your code will be executed single-threaded.
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|
| /kernel/linux/linux-6.6/tools/memory-model/Documentation/ |
| D | simple.txt | 2 memory-ordering lives simple, as is necessary for those whose domain
3 is complex. After all, there are bugs other than memory-ordering bugs,
4 and the time spent gaining memory-ordering knowledge is not available
5 for gaining domain knowledge. Furthermore Linux-kernel memory model
15 of MMIO-based device drivers will often need to use mb(), rmb(), and
22 Single-threaded code
25 In single-threaded code, there is no reordering, at least assuming
27 it is generally a mistake to assume your code will only run in a single
33 your code really is executed within a single thread that does not access
38 this lock at a given time, your code will be executed single-threaded.
[all …]
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| /kernel/linux/linux-6.6/Documentation/devicetree/bindings/interrupt-controller/ |
| D | apple,aic.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/interrupt-controller/apple,aic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Hector Martin <marcan@marcan.st>
19 - Level-triggered hardware IRQs wired to SoC blocks
20 - Single mask bit per IRQ
21 - Per-IRQ affinity setting
22 - Automatic masking on event delivery (auto-ack)
23 - Software triggering (ORed with hw line)
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| /kernel/linux/linux-6.6/Documentation/networking/ |
| D | scaling.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 multi-processor systems.
17 - RSS: Receive Side Scaling
18 - RPS: Receive Packet Steering
19 - RFS: Receive Flow Steering
20 - Accelerated Receive Flow Steering
21 - XPS: Transmit Packet Steering
28 (multi-queue). On reception, a NIC can send different packets to different
33 generally known as “Receive-side Scaling” (RSS). The goal of RSS and
35 Multi-queue distribution can also be used for traffic prioritization, but
[all …]
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| /kernel/linux/linux-5.10/Documentation/networking/ |
| D | scaling.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 multi-processor systems.
17 - RSS: Receive Side Scaling
18 - RPS: Receive Packet Steering
19 - RFS: Receive Flow Steering
20 - Accelerated Receive Flow Steering
21 - XPS: Transmit Packet Steering
28 (multi-queue). On reception, a NIC can send different packets to different
33 generally known as “Receive-side Scaling” (RSS). The goal of RSS and
35 Multi-queue distribution can also be used for traffic prioritization, but
[all …]
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| /kernel/linux/linux-6.6/kernel/debug/kdb/ |
| D | kdb_debugger.c | 40 kdb_current_task = kgdb_info[ks->cpu].task; in kdb_common_init_state()
41 kdb_current_regs = kgdb_info[ks->cpu].debuggerinfo; in kdb_common_init_state()
47 kdb_initial_cpu = -1; in kdb_common_deinit_state()
57 unsigned long addr = kgdb_arch_pc(ks->ex_vector, ks->linux_regs); in kdb_stub()
66 addr = instruction_pointer(ks->linux_regs); in kdb_stub()
68 ks->pass_exception = 0; in kdb_stub()
72 if (ks->err_code == KDB_REASON_SYSTEM_NMI && ks->signo == SIGTRAP) in kdb_stub()
79 if ((bp->bp_enabled) && (bp->bp_addr == addr)) { in kdb_stub()
82 if (addr != instruction_pointer(ks->linux_regs)) in kdb_stub()
83 kgdb_arch_set_pc(ks->linux_regs, addr); in kdb_stub()
[all …]
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| /kernel/linux/linux-5.10/kernel/debug/kdb/ |
| D | kdb_debugger.c | 40 kdb_current_task = kgdb_info[ks->cpu].task; in kdb_common_init_state()
41 kdb_current_regs = kgdb_info[ks->cpu].debuggerinfo; in kdb_common_init_state()
47 kdb_initial_cpu = -1; in kdb_common_deinit_state()
57 unsigned long addr = kgdb_arch_pc(ks->ex_vector, ks->linux_regs); in kdb_stub()
66 addr = instruction_pointer(ks->linux_regs); in kdb_stub()
68 ks->pass_exception = 0; in kdb_stub()
72 if (ks->err_code == KDB_REASON_SYSTEM_NMI && ks->signo == SIGTRAP) in kdb_stub()
79 if ((bp->bp_enabled) && (bp->bp_addr == addr)) { in kdb_stub()
82 if (addr != instruction_pointer(ks->linux_regs)) in kdb_stub()
83 kgdb_arch_set_pc(ks->linux_regs, addr); in kdb_stub()
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| /kernel/linux/linux-5.10/arch/mips/boot/dts/ralink/ |
| D | mt7628a.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
4 #address-cells = <1>;
5 #size-cells = <1>;
6 compatible = "ralink,mt7628a-soc";
9 #address-cells = <1>;
10 #size-cells = <0>;
12 cpu@0 {
14 device_type = "cpu";
19 resetc: reset-controller {
20 compatible = "ralink,rt2880-reset";
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|