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/Linux-v6.1/kernel/irq/
Dcpuhotplug.c1 // SPDX-License-Identifier: GPL-2.0
19 /* For !GENERIC_IRQ_EFFECTIVE_AFF_MASK this looks at general affinity mask */
28 * which do not implement effective affinity, but the architecture has in irq_needs_fixup()
29 * enabled the config switch. Use the general affinity mask instead. in irq_needs_fixup()
45 pr_warn("Eff. affinity %*pbl of IRQ %u contains only offline CPUs after offlining CPU %u\n", in irq_needs_fixup()
46 cpumask_pr_args(m), d->irq, cpu); in irq_needs_fixup()
58 const struct cpumask *affinity; in migrate_one_irq() local
64 * still in the radix tree. Also if the chip has no affinity setter, in migrate_one_irq()
67 if (!chip || !chip->irq_set_affinity) { in migrate_one_irq()
68 pr_debug("IRQ %u: Unable to migrate away\n", d->irq); in migrate_one_irq()
[all …]
Dirqdesc.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
4 * Copyright (C) 2005-2006, Thomas Gleixner, Russell King
7 * information is available in Documentation/core-api/genericirq.rst
15 #include <linux/radix-tree.h>
23 * lockdep: we want to handle all irq_desc locks as a single lock-class:
57 if (!zalloc_cpumask_var_node(&desc->irq_common_data.affinity, in alloc_masks()
59 return -ENOMEM; in alloc_masks()
62 if (!zalloc_cpumask_var_node(&desc->irq_common_data.effective_affinity, in alloc_masks()
64 free_cpumask_var(desc->irq_common_data.affinity); in alloc_masks()
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Dmsi.c1 // SPDX-License-Identifier: GPL-2.0
25 * msi_alloc_desc - Allocate an initialized msi_desc
28 * @affinity: Optional pointer to an affinity mask array size of @nvec
30 * If @affinity is not %NULL then an affinity array[@nvec] is allocated
31 * and the affinity masks and flags from @affinity are copied.
36 const struct irq_affinity_desc *affinity) in msi_alloc_desc() argument
43 desc->dev = dev; in msi_alloc_desc()
44 desc->nvec_used = nvec; in msi_alloc_desc()
45 if (affinity) { in msi_alloc_desc()
46 desc->affinity = kmemdup(affinity, nvec * sizeof(*desc->affinity), GFP_KERNEL); in msi_alloc_desc()
[all …]
/Linux-v6.1/Documentation/arm64/
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
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
25 running legacy 32-bit binaries. Unsurprisingly, that doesn't work very
28 It seems inevitable that future SoCs will drop 32-bit support
[all …]
/Linux-v6.1/lib/
Dcpu_rmap.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * cpu_rmap.c: CPU affinity reverse-map support
13 * objects with CPU affinities. This can be seen as a reverse-map of
14 * CPU affinity. However, we do not assume that the object affinities
21 * alloc_cpu_rmap - allocate CPU affinity reverse-map
39 rmap = kzalloc(obj_offset + size * sizeof(rmap->obj[0]), flags); in alloc_cpu_rmap()
43 kref_init(&rmap->refcount); in alloc_cpu_rmap()
44 rmap->obj = (void **)((char *)rmap + obj_offset); in alloc_cpu_rmap()
50 * any newly-hotplugged CPUs to have some object assigned. in alloc_cpu_rmap()
53 rmap->near[cpu].index = cpu % size; in alloc_cpu_rmap()
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/Linux-v6.1/tools/perf/util/
Daffinity.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Manage affinity to optimize IPIs inside the kernel perf API. */
10 #include "affinity.h"
14 int sz = cpu__max_cpu().cpu + 8 - 1; in get_cpu_set_size()
24 int affinity__setup(struct affinity *a) in affinity__setup()
28 a->orig_cpus = bitmap_zalloc(cpu_set_size * 8); in affinity__setup()
29 if (!a->orig_cpus) in affinity__setup()
30 return -1; in affinity__setup()
31 sched_getaffinity(0, cpu_set_size, (cpu_set_t *)a->orig_cpus); in affinity__setup()
32 a->sched_cpus = bitmap_zalloc(cpu_set_size * 8); in affinity__setup()
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Daffinity.h1 // SPDX-License-Identifier: GPL-2.0
7 struct affinity { struct
13 void affinity__cleanup(struct affinity *a); argument
14 void affinity__set(struct affinity *a, int cpu);
15 int affinity__setup(struct affinity *a);
Devlist.h1 /* SPDX-License-Identifier: GPL-2.0 */
28 * NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY
201 int affinity, int flush, int comp_level);
239 return list_empty(&evlist->core.entries); in evlist__empty()
244 struct perf_evsel *evsel = perf_evlist__first(&evlist->core); in evlist__first()
251 struct perf_evsel *evsel = perf_evlist__last(&evlist->core); in evlist__last()
263 * __evlist__for_each_entry - iterate thru all the evsels
271 * evlist__for_each_entry - iterate thru all the evsels
276 __evlist__for_each_entry(&(evlist)->core.entries, evsel)
279 * __evlist__for_each_entry_continue - continue iteration thru all the evsels
[all …]
/Linux-v6.1/tools/virtio/ringtest/
Drun-on-all.sh2 # SPDX-License-Identifier: GPL-2.0
4 CPUS_ONLINE=$(lscpu --online -p=cpu|grep -v -e '#')
8 HOST_AFFINITY=$(echo "${CPUS_ONLINE}"|tail -n 1)
16 (echo "$@" | grep -e "--sleep" > /dev/null) || \
19 echo "GUEST AFFINITY $cpu"
20 "$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu
23 echo "NO GUEST AFFINITY"
24 "$@" --host-affinity $HOST_AFFINITY
25 echo "NO AFFINITY"
/Linux-v6.1/drivers/infiniband/hw/hfi1/
Daffinity.h1 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
3 * Copyright(c) 2015 - 2020 Intel Corporation.
35 /* Initialize non-HT cpu cores mask */
37 /* Initialize driver affinity data */
40 * Set IRQ affinity to a CPU. The function will determine the
41 * CPU and set the affinity to it.
46 * Remove the IRQ's CPU affinity. This function also updates
52 * Determine a CPU affinity for a user process, if the process does not
53 * have an affinity set yet.
77 struct mutex lock; /* protects affinity nodes */
Daffinity.c1 // SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
3 * Copyright(c) 2015 - 2020 Intel Corporation.
12 #include "affinity.h"
35 cpumask_clear(&set->mask); in init_cpu_mask_set()
36 cpumask_clear(&set->used); in init_cpu_mask_set()
37 set->gen = 0; in init_cpu_mask_set()
43 if (cpumask_equal(&set->mask, &set->used)) { in _cpu_mask_set_gen_inc()
48 set->gen++; in _cpu_mask_set_gen_inc()
49 cpumask_clear(&set->used); in _cpu_mask_set_gen_inc()
55 if (cpumask_empty(&set->used) && set->gen) { in _cpu_mask_set_gen_dec()
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/Linux-v6.1/tools/testing/selftests/rseq/
Dbasic_test.c1 // SPDX-License-Identifier: LGPL-2.1
18 cpu_set_t affinity, test_affinity; in test_cpu_pointer() local
21 sched_getaffinity(0, sizeof(affinity), &affinity); in test_cpu_pointer()
24 if (CPU_ISSET(i, &affinity)) { in test_cpu_pointer()
35 sched_setaffinity(0, sizeof(affinity), &affinity); in test_cpu_pointer()
55 return -1; in main()
/Linux-v6.1/tools/power/cpupower/bench/
Dsystem.c1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* cpufreq-bench CPUFreq microbenchmark
43 * @retval -1 when failed
54 return -1; in set_cpufreq_governor()
60 return -1; in set_cpufreq_governor()
67 * sets cpu affinity for the process
69 * @param cpu cpu# to which the affinity should be set
72 * @retval -1 when setting the affinity failed
82 dprintf("set affinity to cpu #%u\n", cpu); in set_cpu_affinity()
86 fprintf(stderr, "warning: unable to set cpu affinity\n"); in set_cpu_affinity()
[all …]
/Linux-v6.1/include/linux/
Dcpu_rmap.h1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * cpu_rmap.c: CPU affinity reverse-map support
16 * struct cpu_rmap - CPU affinity reverse-map
18 * @size: Number of objects to be reverse-mapped
22 * based on affinity masks
40 const struct cpumask *affinity);
44 return rmap->near[cpu].index; in cpu_rmap_lookup_index()
49 return rmap->obj[rmap->near[cpu].index]; in cpu_rmap_lookup_obj()
53 * alloc_irq_cpu_rmap - allocate CPU affinity reverse-map for IRQs
Dirq.h1 /* SPDX-License-Identifier: GPL-2.0 */
10 * Thanks. --rmk
36 * Bits 0-7 are the same as the IRQF_* bits in linux/interrupt.h
38 * IRQ_TYPE_NONE - default, unspecified type
39 * IRQ_TYPE_EDGE_RISING - rising edge triggered
40 * IRQ_TYPE_EDGE_FALLING - falling edge triggered
41 * IRQ_TYPE_EDGE_BOTH - rising and falling edge triggered
42 * IRQ_TYPE_LEVEL_HIGH - high level triggered
43 * IRQ_TYPE_LEVEL_LOW - low level triggered
44 * IRQ_TYPE_LEVEL_MASK - Mask to filter out the level bits
[all …]
Dinterrupt.h1 /* SPDX-License-Identifier: GPL-2.0 */
43 * IRQF_SHARED - allow sharing the irq among several devices
44 * IRQF_PROBE_SHARED - set by callers when they expect sharing mismatches to occur
45 * IRQF_TIMER - Flag to mark this interrupt as timer interrupt
46 * IRQF_PERCPU - Interrupt is per cpu
47 * IRQF_NOBALANCING - Flag to exclude this interrupt from irq balancing
48 * IRQF_IRQPOLL - Interrupt is used for polling (only the interrupt that is
51 * IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished.
54 * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend. Does not guarantee
56 * state. See Documentation/power/suspend-and-interrupts.rst
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/Linux-v6.1/Documentation/devicetree/bindings/interrupt-controller/
Dapple,aic.yaml1 # 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)
[all …]
/Linux-v6.1/drivers/md/
Ddm-ps-io-affinity.c1 // SPDX-License-Identifier: GPL-2.0-only
7 #include "dm-path-selector.h"
9 #include <linux/device-mapper.h>
12 #define DM_MSG_PREFIX "multipath io-affinity"
29 struct path_info *pi = s->path_map[cpu]; in ioa_free_path()
34 if (refcount_dec_and_test(&pi->refcount)) { in ioa_free_path()
35 cpumask_clear_cpu(cpu, s->path_mask); in ioa_free_path()
36 free_cpumask_var(pi->cpumask); in ioa_free_path()
39 s->path_map[cpu] = NULL; in ioa_free_path()
46 struct selector *s = ps->context; in ioa_add_path()
[all …]
/Linux-v6.1/arch/mips/kernel/
Dmips-mt-fpaff.c1 // SPDX-License-Identifier: GPL-2.0
20 * CPU mask used to set process affinity for MT VPEs/TCs with FPUs
24 static int fpaff_threshold = -1;
30 * FPU affinity with the user's requested processor affinity.
37 * find_process_by_pid - find a process with a matching PID value.
56 match = (uid_eq(cred->euid, pcred->euid) || in check_same_owner()
57 uid_eq(cred->euid, pcred->uid)); in check_same_owner()
63 * mipsmt_sys_sched_setaffinity - set the cpu affinity of a process
74 return -EINVAL; in mipsmt_sys_sched_setaffinity()
77 return -EFAULT; in mipsmt_sys_sched_setaffinity()
[all …]
/Linux-v6.1/arch/arm64/kernel/
Dsetup.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1995-2001 Russell King
102 * smp_build_mpidr_hash - Pre-compute shifts required at each affinity
109 u32 i, affinity, fs[4], bits[4], ls; in smp_build_mpidr_hash() local
112 * Pre-scan the list of MPIDRS and filter out bits that do in smp_build_mpidr_hash()
113 * not contribute to affinity levels, ie they never toggle. in smp_build_mpidr_hash()
119 * Find and stash the last and first bit set at all affinity levels to in smp_build_mpidr_hash()
123 affinity = MPIDR_AFFINITY_LEVEL(mask, i); in smp_build_mpidr_hash()
127 * to express the affinity level. in smp_build_mpidr_hash()
129 ls = fls(affinity); in smp_build_mpidr_hash()
[all …]
/Linux-v6.1/drivers/perf/
Darm_pmu_platform.c1 // SPDX-License-Identifier: GPL-2.0
31 int ret = -ENODEV; in probe_current_pmu()
35 for (; info->init != NULL; info++) { in probe_current_pmu()
36 if ((cpuid & info->mask) != info->cpuid) in probe_current_pmu()
38 ret = info->init(pmu); in probe_current_pmu()
49 struct pmu_hw_events __percpu *hw_events = pmu->hw_events; in pmu_parse_percpu_irq()
51 ret = irq_get_percpu_devid_partition(irq, &pmu->supported_cpus); in pmu_parse_percpu_irq()
55 for_each_cpu(cpu, &pmu->supported_cpus) in pmu_parse_percpu_irq()
56 per_cpu(hw_events->irq, cpu) = irq; in pmu_parse_percpu_irq()
63 return !!of_find_property(node, "interrupt-affinity", NULL); in pmu_has_irq_affinity()
[all …]
/Linux-v6.1/drivers/gpu/drm/amd/amdkfd/
Dkfd_crat.h1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
3 * Copyright 2014-2022 Advanced Micro Devices, Inc.
46 #define CRAT_OEMID_64BIT_MASK ((1ULL << (CRAT_OEMID_LENGTH * 8)) - 1)
86 * ComputeUnit Affinity structure and definitions
121 * HSA Memory Affinity structure and definitions
142 uint8_t reserved2[CRAT_MEMORY_RESERVED_LENGTH - 1];
146 * HSA Cache Affinity structure and definitions
175 * HSA TLB Affinity structure and definitions
210 * HSA CCompute/APU Affinity structure and definitions
229 * HSA IO Link Affinity structure and definitions
[all …]
/Linux-v6.1/Documentation/core-api/irq/
Dirq-affinity.rst2 SMP IRQ affinity
6 - Started by Ingo Molnar <mingo@redhat.com>
7 - Update by Max Krasnyansky <maxk@qualcomm.com>
14 IRQ affinity then the value will not change from the default of all cpus.
16 /proc/irq/default_smp_affinity specifies default affinity mask that applies
17 to all non-active IRQs. Once IRQ is allocated/activated its affinity bitmask
21 Here is an example of restricting IRQ44 (eth1) to CPU0-3 then restricting
22 it to CPU4-7 (this is an 8-CPU SMP box)::
31 [root@moon 44]# ping -f h
34 --- hell ping statistics ---
[all …]
/Linux-v6.1/tools/testing/selftests/bpf/
Dbench.c1 // SPDX-License-Identifier: GPL-2.0
18 .affinity = false,
39 long total = res->false_hits + res->hits + res->drops; in false_hits_report_progress()
42 iter, (delta_ns - 1000000000) / 1000.0); in false_hits_report_progress()
45 res->false_hits, total, ((float)res->false_hits / total) * 100); in false_hits_report_progress()
71 hits_per_sec = res->hits / 1000000.0 / (delta_ns / 1000000000.0); in hits_drops_report_progress()
73 drops_per_sec = res->drops / 1000000.0 / (delta_ns / 1000000000.0); in hits_drops_report_progress()
76 iter, (delta_ns - 1000000000) / 1000.0); in hits_drops_report_progress()
90 gp_stat->mean += res[i].gp_ns / 1000.0 / (double)res[i].gp_ct / (0.0 + res_cnt); in grace_period_latency_basic_stats()
92 #define IT_MEAN_DIFF (res[i].gp_ns / 1000.0 / (double)res[i].gp_ct - gp_stat->mean) in grace_period_latency_basic_stats()
[all …]
/Linux-v6.1/block/
Dblk-mq-rdma.c1 // SPDX-License-Identifier: GPL-2.0
5 #include <linux/blk-mq.h>
6 #include <linux/blk-mq-rdma.h>
10 * blk_mq_rdma_map_queues - provide a default queue mapping for rdma device
16 * interrupt vetors as @set has queues. It will then query it's affinity mask
17 * and built queue mapping that maps a queue to the CPUs that have irq affinity
21 * @set->nr_hw_queues, or @dev does not provide an affinity mask for a
30 for (queue = 0; queue < map->nr_queues; queue++) { in blk_mq_rdma_map_queues()
36 map->mq_map[cpu] = map->queue_offset + queue; in blk_mq_rdma_map_queues()

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