| /kernel/linux/linux-6.6/kernel/irq/ |
| D | cpuhotplug.c | 20 /* For !GENERIC_IRQ_EFFECTIVE_AFF_MASK this looks at general affinity mask */
29 * which do not implement effective affinity, but the architecture has in irq_needs_fixup()
30 * enabled the config switch. Use the general affinity mask instead. in irq_needs_fixup()
46 pr_warn("Eff. affinity %*pbl of IRQ %u contains only offline CPUs after offlining CPU %u\n", in irq_needs_fixup()
59 const struct cpumask *affinity; in migrate_one_irq() local
68 * still in the radix tree. Also if the chip has no affinity setter, in migrate_one_irq()
88 * - Affinity mask does not include this CPU. in migrate_one_irq()
104 * mask, so the last change of the affinity does not get lost. If in migrate_one_irq()
106 * any online CPU, use the current affinity mask. in migrate_one_irq()
109 affinity = irq_desc_get_pending_mask(desc); in migrate_one_irq()
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| D | irqdesc.c | 56 if (!zalloc_cpumask_var_node(&desc->irq_common_data.affinity, in alloc_masks()
63 free_cpumask_var(desc->irq_common_data.affinity); in alloc_masks()
73 free_cpumask_var(desc->irq_common_data.affinity); in alloc_masks()
81 const struct cpumask *affinity) in desc_smp_init() argument
83 if (!affinity) in desc_smp_init()
84 affinity = irq_default_affinity; in desc_smp_init()
85 cpumask_copy(desc->irq_common_data.affinity, affinity); in desc_smp_init()
99 desc_smp_init(struct irq_desc *desc, int node, const struct cpumask *affinity) { } in desc_smp_init() argument
103 const struct cpumask *affinity, struct module *owner) in desc_set_defaults() argument
126 desc_smp_init(desc, node, affinity); in desc_set_defaults()
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| /kernel/linux/linux-5.10/kernel/irq/ |
| D | cpuhotplug.c | 20 /* For !GENERIC_IRQ_EFFECTIVE_AFF_MASK this looks at general affinity mask */
29 * which do not implement effective affinity, but the architecture has in irq_needs_fixup()
30 * enabled the config switch. Use the general affinity mask instead. in irq_needs_fixup()
46 pr_warn("Eff. affinity %*pbl of IRQ %u contains only offline CPUs after offlining CPU %u\n", in irq_needs_fixup()
59 const struct cpumask *affinity; in migrate_one_irq() local
68 * still in the radix tree. Also if the chip has no affinity setter, in migrate_one_irq()
80 * - Affinity mask does not include this CPU. in migrate_one_irq()
104 * mask, so the last change of the affinity does not get lost. If in migrate_one_irq()
106 * any online CPU, use the current affinity mask. in migrate_one_irq()
109 affinity = irq_desc_get_pending_mask(desc); in migrate_one_irq()
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| D | irqdesc.c | 57 if (!zalloc_cpumask_var_node(&desc->irq_common_data.affinity, in alloc_masks()
64 free_cpumask_var(desc->irq_common_data.affinity); in alloc_masks()
74 free_cpumask_var(desc->irq_common_data.affinity); in alloc_masks()
82 const struct cpumask *affinity) in desc_smp_init() argument
84 if (!affinity) in desc_smp_init()
85 affinity = irq_default_affinity; in desc_smp_init()
86 cpumask_copy(desc->irq_common_data.affinity, affinity); in desc_smp_init()
100 desc_smp_init(struct irq_desc *desc, int node, const struct cpumask *affinity) { } in desc_smp_init() argument
104 const struct cpumask *affinity, struct module *owner) in desc_set_defaults() argument
127 desc_smp_init(desc, node, affinity); in desc_set_defaults()
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| /kernel/linux/linux-6.6/Documentation/arch/arm64/ |
| D | asymmetric-32bit.rst | 51 CPU affinity.
68 On a homogeneous system, the CPU affinity of a task is preserved across
71 affinity mask contains 64-bit-only CPUs. In this situation, the kernel
72 determines the new affinity mask as follows:
74 1. If the 32-bit-capable subset of the affinity mask is not empty,
75 then the affinity is restricted to that subset and the old affinity
84 affinity of the task is then changed to match the 32-bit-capable
87 3. On failure (i.e. out of memory), the affinity is changed to the set
91 invalidate the affinity mask saved in (1) and attempt to restore the CPU
92 affinity of the task using the saved mask if it was previously valid.
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| /kernel/linux/linux-6.6/lib/ |
| D | cpu_rmap.c | 3 * cpu_rmap.c: CPU affinity reverse-map support
14 * CPU affinity. However, we do not assume that the object affinities
21 * alloc_cpu_rmap - allocate CPU affinity reverse-map
162 * cpu_rmap_update - update CPU rmap following a change of object affinity
164 * @index: Index of object whose affinity changed
165 * @affinity: New CPU affinity of object
168 const struct cpumask *affinity) in cpu_rmap_update() argument
188 /* Set distance to 0 for all CPUs in the new affinity mask. in cpu_rmap_update()
191 for_each_cpu(cpu, affinity) { in cpu_rmap_update()
223 /* Glue between IRQ affinity notifiers and CPU rmaps */
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| /kernel/linux/linux-5.10/lib/ |
| D | cpu_rmap.c | 3 * cpu_rmap.c: CPU affinity reverse-map support
14 * CPU affinity. However, we do not assume that the object affinities
21 * alloc_cpu_rmap - allocate CPU affinity reverse-map
150 * cpu_rmap_update - update CPU rmap following a change of object affinity
152 * @index: Index of object whose affinity changed
153 * @affinity: New CPU affinity of object
156 const struct cpumask *affinity) in cpu_rmap_update() argument
176 /* Set distance to 0 for all CPUs in the new affinity mask. in cpu_rmap_update()
179 for_each_cpu(cpu, affinity) { in cpu_rmap_update()
211 /* Glue between IRQ affinity notifiers and CPU rmaps */
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| /kernel/linux/linux-6.6/tools/perf/util/ |
| D | affinity.c | 2 /* Manage affinity to optimize IPIs inside the kernel perf API. */
10 #include "affinity.h"
24 int affinity__setup(struct affinity *a) in affinity__setup()
44 * It is more efficient to change perf's affinity to the target
48 void affinity__set(struct affinity *a, int cpu) in affinity__set()
63 * We ignore errors because affinity is just an optimization. in affinity__set()
71 static void __affinity__cleanup(struct affinity *a) in __affinity__cleanup()
81 void affinity__cleanup(struct affinity *a) in affinity__cleanup()
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| D | affinity.h | 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);
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| /kernel/linux/linux-5.10/tools/virtio/ringtest/ |
| D | run-on-all.sh | 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"
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| /kernel/linux/linux-6.6/tools/virtio/ringtest/ |
| D | run-on-all.sh | 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"
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| /kernel/linux/linux-6.6/drivers/infiniband/hw/hfi1/ |
| D | affinity.h | 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 */
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| D | affinity.c | 12 #include "affinity.h"
145 * The real cpu mask is part of the affinity struct but it has to be in node_affinity_init()
386 hfi1_cdbg(AFFINITY, in _dev_comp_vect_mappings_destroy()
436 hfi1_cdbg(AFFINITY, in _dev_comp_vect_mappings_create()
512 … "Number of kernel receive queues is too large for completion vector affinity to be effective\n"); in _dev_comp_vect_cpu_mask_init()
541 hfi1_cdbg(AFFINITY, in _dev_comp_vect_cpu_mask_init()
542 "[%s] Completion vector affinity CPU set(s) %*pbl", in _dev_comp_vect_cpu_mask_init()
581 * Interrupt affinity.
606 * If this is the first time this NUMA node's affinity is used, in hfi1_dev_affinity_init()
607 * create an entry in the global affinity structure and initialize it. in hfi1_dev_affinity_init()
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| /kernel/linux/linux-5.10/tools/perf/util/ |
| D | affinity.c | 2 /* Manage affinity to optimize IPIs inside the kernel perf API. */
10 #include "affinity.h"
24 int affinity__setup(struct affinity *a) in affinity__setup()
44 * It is more efficient to change perf's affinity to the target
48 void affinity__set(struct affinity *a, int cpu) in affinity__set()
57 * We ignore errors because affinity is just an optimization. in affinity__set()
65 void affinity__cleanup(struct affinity *a) in affinity__cleanup()
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| D | affinity.h | 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);
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| /kernel/linux/linux-5.10/tools/testing/selftests/rseq/ |
| D | basic_test.c | 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()
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| /kernel/linux/linux-6.6/tools/testing/selftests/rseq/ |
| D | basic_test.c | 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()
39 sched_setaffinity(0, sizeof(affinity), &affinity); in test_cpu_pointer()
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| /kernel/linux/common_modules/tzdriver/core/ |
| D | Kconfig | 3 int "Default Cpu Affinity"
7 Default Cpu Affinity
17 bool "TA affinity"
21 TA Cpu Affinity bind range, consistent with CONFIG_MAX_NUM_NODES in TEE
24 int "TA affinity max support cpus"
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| /kernel/linux/linux-5.10/drivers/infiniband/hw/hfi1/ |
| D | affinity.h | 78 /* Initialize driver affinity data */
81 * Set IRQ affinity to a CPU. The function will determine the
82 * CPU and set the affinity to it.
87 * Remove the IRQ's CPU affinity. This function also updates
93 * Determine a CPU affinity for a user process, if the process does not
94 * have an affinity set yet.
118 struct mutex lock; /* protects affinity nodes */
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| D | affinity.c | 54 #include "affinity.h"
187 * The real cpu mask is part of the affinity struct but it has to be in node_affinity_init()
430 hfi1_cdbg(AFFINITY, in _dev_comp_vect_mappings_destroy()
480 hfi1_cdbg(AFFINITY, in _dev_comp_vect_mappings_create()
556 … "Number of kernel receive queues is too large for completion vector affinity to be effective\n"); in _dev_comp_vect_cpu_mask_init()
585 hfi1_cdbg(AFFINITY, in _dev_comp_vect_cpu_mask_init()
586 "[%s] Completion vector affinity CPU set(s) %*pbl", in _dev_comp_vect_cpu_mask_init()
625 * Interrupt affinity.
650 * If this is the first time this NUMA node's affinity is used, in hfi1_dev_affinity_init()
651 * create an entry in the global affinity structure and initialize it. in hfi1_dev_affinity_init()
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| /kernel/linux/linux-6.6/tools/power/cpupower/bench/ |
| D | system.c | 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()
146 * sets up the cpu affinity and scheduler priority
155 printf("set cpu affinity to cpu #%u\n", config->cpu); in prepare_system()
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| /kernel/linux/linux-5.10/tools/power/cpupower/bench/ |
| D | system.c | 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()
146 * sets up the cpu affinity and scheduler priority
155 printf("set cpu affinity to cpu #%u\n", config->cpu); in prepare_system()
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| /kernel/linux/linux-5.10/include/linux/ |
| D | cpu_rmap.h | 6 * cpu_rmap.c: CPU affinity reverse-map support
16 * struct cpu_rmap - CPU affinity reverse-map
22 * based on affinity masks
40 const struct cpumask *affinity);
53 * alloc_irq_cpu_rmap - allocate CPU affinity reverse-map for IRQs
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| /kernel/linux/linux-6.6/include/linux/ |
| D | cpu_rmap.h | 6 * cpu_rmap.c: CPU affinity reverse-map support
16 * struct cpu_rmap - CPU affinity reverse-map
21 * based on affinity masks
39 const struct cpumask *affinity);
52 * alloc_irq_cpu_rmap - allocate CPU affinity reverse-map for IRQs
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| /kernel/linux/linux-6.6/Documentation/core-api/ |
| D | workqueue.rst | 350 Affinity Scopes
353 An unbound workqueue groups CPUs according to its affinity scope to improve
354 cache locality. For example, if a workqueue is using the default affinity
361 Workqueue currently supports the following affinity scopes.
379 cases. This is the default affinity scope.
388 The default affinity scope can be changed with the module parameter
389 ``workqueue.default_affinity_scope`` and a specific workqueue's affinity
392 If ``WQ_SYSFS`` is set, the workqueue will have the following affinity scope
397 Read to see the current affinity scope. Write to change.
403 0 by default indicating that affinity scopes are not strict. When a work
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