mirror of
https://github.com/morgan9e/systemd
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0f30bf5886
Takes a list of CPU indices or ranges separated by either whitespace or commas. Alternatively, takes the special value "all" in which will include all available CPUs in the mask. CPU ranges are specified by the lower and upper CPU indices separated by a dash (e.g. "2-6"). This option may be specified more than once, in which case the specified CPU affinity masks are merged. If an empty string is assigned, the mask is reset, all assignments prior to this will have no effect. Defaults to unset and RPS CPU list is unchanged. To disable RPS when it was previously enabled, use the special value "disable". Currently, this will set CPU mask to all `rx` queue of matched device (if it has multiple queues). The `/sys/class/net/<dev>/queues/rx-<n>/rps_cpus` only accept cpu bitmap mask in hexadecimal. Fix: #30323
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <sched.h>
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#include "macro.h"
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#include "missing_syscall.h"
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/* This wraps the libc interface with a variable to keep the allocated size. */
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typedef struct CPUSet {
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cpu_set_t *set;
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size_t allocated; /* in bytes */
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} CPUSet;
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static inline void cpu_set_reset(CPUSet *a) {
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assert((a->allocated > 0) == !!a->set);
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if (a->set)
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CPU_FREE(a->set);
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*a = (CPUSet) {};
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}
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CPUSet* cpu_set_free(CPUSet *c);
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DEFINE_TRIVIAL_CLEANUP_FUNC(CPUSet*, cpu_set_free);
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int cpu_set_add_all(CPUSet *a, const CPUSet *b);
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int cpu_set_add(CPUSet *a, unsigned cpu);
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char* cpu_set_to_string(const CPUSet *a);
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char *cpu_set_to_range_string(const CPUSet *a);
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char* cpu_set_to_mask_string(const CPUSet *a);
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int cpu_set_realloc(CPUSet *cpu_set, unsigned ncpus);
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int parse_cpu_set_full(
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const char *rvalue,
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CPUSet *cpu_set,
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bool warn,
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const char *unit,
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const char *filename, unsigned line,
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const char *lvalue);
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int parse_cpu_set_extend(
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const char *rvalue,
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CPUSet *old,
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bool warn,
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const char *unit,
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const char *filename,
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unsigned line,
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const char *lvalue);
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static inline int parse_cpu_set(const char *rvalue, CPUSet *cpu_set){
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return parse_cpu_set_full(rvalue, cpu_set, false, NULL, NULL, 0, NULL);
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}
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int cpu_set_to_dbus(const CPUSet *set, uint8_t **ret, size_t *allocated);
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int cpu_set_from_dbus(const uint8_t *bits, size_t size, CPUSet *set);
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int cpus_in_affinity_mask(void);
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int cpu_mask_add_all(CPUSet *mask);
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