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Tue, 09 Jun 2026 17:53:55 -0700 (PDT) Date: Tue, 9 Jun 2026 17:53:31 -0700 In-Reply-To: <20260610005338.2967132-1-seanjc@google.com> Mime-Version: 1.0 References: <20260610005338.2967132-1-seanjc@google.com> X-Mailer: git-send-email 2.54.0.1099.g489fc7bff1-goog Message-ID: <20260610005338.2967132-12-seanjc@google.com> Subject: [PATCH v6 11/18] KVM: selftests: Make number of IRQs configurable in IRQ test From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Oliver Upton , Sean Christopherson Cc: Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, David Matlack , Josh Hilke Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260609_175357_815941_E1334F6B X-CRM114-Status: GOOD ( 12.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: David Matlack Extend the eventfd IRQ test with a '-i' flag to let the user specify the the number of IRQs to generate (instead of hardcoding the test to always generate 1000 interrupts). Signed-off-by: David Matlack Co-developed-by: Josh Hilke Signed-off-by: Josh Hilke [sean: massage changelog] Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/irq_test.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/irq_test.c b/tools/testing/selftests/kvm/irq_test.c index 2ad9efd9abc7..15791ba0a2f9 100644 --- a/tools/testing/selftests/kvm/irq_test.c +++ b/tools/testing/selftests/kvm/irq_test.c @@ -134,12 +134,13 @@ static const char *probe_iommu_type(void) static void help(const char *name) { - printf("Usage: %s [-a] [-d ] [-e] [-h] [-t iommu_type]\n", name); + printf("Usage: %s [-a] [-d ] [-e] [-h] [-i nr_irqs] [-t iommu_type]\n", name); printf("\n"); printf("Tests KVM interrupt routing and delivery via irqfd.\n"); printf("-a Affine the device's host IRQ to a random physical CPU\n"); printf("-d Use a VFIO device to send MSI-X interrupts instead of manually signaling the eventfd\n"); printf("-e Set empty GSI routing in-between some interrupts\n"); + printf("-i The number of IRQs to generate during the test\n"); printf("-t Override the IOMMU type to use (vfio_type1_iommu or iommufd)\n"); printf("\n"); exit(KSFT_FAIL); @@ -174,7 +175,7 @@ int main(int argc, char **argv) struct kvm_vm *vm; int irq, irq_cpu; - while ((c = getopt(argc, argv, "ad:eht:")) != -1) { + while ((c = getopt(argc, argv, "ad:ehi:t:")) != -1) { switch (c) { case 'a': irq_affinity = true; @@ -185,6 +186,9 @@ int main(int argc, char **argv) case 'e': set_empty_routing = true; break; + case 'i': + nr_irqs = atoi_positive("Number of IRQs", optarg); + break; case 't': iommu_type = optarg; break; -- 2.54.0.1099.g489fc7bff1-goog