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380b0e5e0e
Add a utility, proc_irq_set_smp_affinity(), to set the CPU affinity of a Linux host IRQ via the proc filesystem. Use smp_affinity_list instead of smp_affinity to avoid having to convert the single CPU to a bitmask. The helper will be used by the eventfd IRQ test to verify delivery of IRQs when the affinity is randomized/modified. Signed-off-by: Josh Hilke <jrhilke@google.com> [sean: make the utility self-contained, drop "list", massage changelog] Link: https://patch.msgid.link/20260626213534.3866178-11-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
12 lines
306 B
C
12 lines
306 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef SELFTEST_KVM_PROC_UTIL_H
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#define SELFTEST_KVM_PROC_UTIL_H
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#include <stdint.h>
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unsigned int vfio_msix_to_host_irq(const char *vfio_device_bdf, int msix);
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void proc_irq_set_smp_affinity(unsigned int irq, int cpu);
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#endif /* SELFTEST_KVM_PROC_UTIL_H */
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