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From: Andre Przywara <andre.przywara@arm.com>
To: Andrew Jones <drjones@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>
Cc: Marc Zyngier <maz@kernel.org>,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: [kvm-unit-tests PATCH 04/17] arm: gic: Support no IRQs test case
Date: Fri,  8 Nov 2019 14:42:27 +0000
Message-ID: <20191108144240.204202-5-andre.przywara@arm.com> (raw)
In-Reply-To: <20191108144240.204202-1-andre.przywara@arm.com>

For some tests it would be important to check that an IRQ was *not*
triggered, for instance to test certain masking operations.

Extend the check_added() function to recognise an empty cpumask to
detect this situation. The timeout duration is reduced, and the "no IRQs
triggered" case is actually reported as a success in this case.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 arm/gic.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/arm/gic.c b/arm/gic.c
index a114009..eca9188 100644
--- a/arm/gic.c
+++ b/arm/gic.c
@@ -66,9 +66,10 @@ static void check_acked(const char *testname, cpumask_t *mask)
 	int missing = 0, extra = 0, unexpected = 0;
 	int nr_pass, cpu, i;
 	bool bad = false;
+	bool noirqs = cpumask_empty(mask);
 
 	/* Wait up to 5s for all interrupts to be delivered */
-	for (i = 0; i < 50; ++i) {
+	for (i = 0; i < (noirqs ? 15 : 50); ++i) {
 		mdelay(100);
 		nr_pass = 0;
 		for_each_present_cpu(cpu) {
@@ -88,7 +89,7 @@ static void check_acked(const char *testname, cpumask_t *mask)
 				bad = true;
 			}
 		}
-		if (nr_pass == nr_cpus) {
+		if (!noirqs && nr_pass == nr_cpus) {
 			report("%s", !bad, testname);
 			if (i)
 				report_info("took more than %d ms", i * 100);
@@ -96,6 +97,11 @@ static void check_acked(const char *testname, cpumask_t *mask)
 		}
 	}
 
+	if (noirqs && nr_pass == nr_cpus) {
+		report("%s", !bad, testname);
+		return;
+	}
+
 	for_each_present_cpu(cpu) {
 		if (cpumask_test_cpu(cpu, mask)) {
 			if (!acked[cpu])
-- 
2.17.1

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  parent reply index

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-08 14:42 [kvm-unit-tests PATCH 00/17] arm: gic: Test SPIs and interrupt groups Andre Przywara
2019-11-08 14:42 ` [kvm-unit-tests PATCH 01/17] arm: gic: Enable GIC MMIO tests for GICv3 as well Andre Przywara
2019-11-08 17:28   ` Alexandru Elisei
2019-11-12 12:49   ` Auger Eric
2019-11-08 14:42 ` [kvm-unit-tests PATCH 02/17] arm: gic: Generalise function names Andre Przywara
2019-11-12 11:11   ` Alexandru Elisei
2019-11-12 12:49   ` Auger Eric
2019-11-08 14:42 ` [kvm-unit-tests PATCH 03/17] arm: gic: Provide per-IRQ helper functions Andre Przywara
2019-11-12 12:51   ` Alexandru Elisei
2019-11-12 15:53     ` Auger Eric
2019-11-12 16:53       ` Alexandru Elisei
2019-11-12 13:49   ` Auger Eric
2019-11-08 14:42 ` Andre Przywara [this message]
2019-11-12 13:26   ` [kvm-unit-tests PATCH 04/17] arm: gic: Support no IRQs test case Alexandru Elisei
2019-11-12 21:14     ` Auger Eric
2019-11-08 14:42 ` [kvm-unit-tests PATCH 05/17] arm: gic: Prepare IRQ handler for handling SPIs Andre Przywara
2019-11-12 13:36   ` Alexandru Elisei
2019-11-12 20:56   ` Auger Eric
2019-11-08 14:42 ` [kvm-unit-tests PATCH 06/17] arm: gic: Add simple shared IRQ test Andre Przywara
2019-11-12 13:54   ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 07/17] arm: gic: Extend check_acked() to allow silent call Andre Przywara
2019-11-12 15:23   ` Alexandru Elisei
2019-11-14 12:32     ` Andrew Jones
2019-11-15 11:32       ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 08/17] arm: gic: Add simple SPI MP test Andre Przywara
2019-11-12 15:41   ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 09/17] arm: gic: Add test for flipping GICD_CTLR.DS Andre Przywara
2019-11-12 16:42   ` Alexandru Elisei
2019-11-14 13:39     ` Vladimir Murzin
2019-11-14 14:17       ` Andre Przywara
2019-11-14 14:50         ` Vladimir Murzin
2019-11-14 15:21           ` Alexandru Elisei
2019-11-14 15:27             ` Peter Maydell
2019-11-14 15:47               ` Alexandru Elisei
2019-11-14 15:56                 ` Peter Maydell
2019-11-08 14:42 ` [kvm-unit-tests PATCH 10/17] arm: gic: Check for writable IGROUPR registers Andre Przywara
2019-11-12 16:51   ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 11/17] arm: gic: Check for validity of both group enable bits Andre Przywara
2019-11-12 16:58   ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 12/17] arm: gic: Change gic_read_iar() to take group parameter Andre Przywara
2019-11-12 17:19   ` Alexandru Elisei
2019-11-14 12:50     ` Andrew Jones
2019-11-08 14:42 ` [kvm-unit-tests PATCH 13/17] arm: gic: Change write_eoir() " Andre Przywara
2019-11-08 14:42 ` [kvm-unit-tests PATCH 14/17] arm: gic: Prepare for receiving GIC group 0 interrupts via FIQs Andre Przywara
2019-11-12 17:30   ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 15/17] arm: gic: Provide FIQ handler Andre Przywara
2019-11-13 10:14   ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 16/17] arm: gic: Prepare interrupt statistics for both groups Andre Przywara
2019-11-13 10:44   ` Alexandru Elisei
2019-11-08 14:42 ` [kvm-unit-tests PATCH 17/17] arm: gic: Test Group0 SPIs Andre Przywara
2019-11-13 11:26   ` Alexandru Elisei

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