From: Jingyi Wang <wangjingyi11@huawei.com>
To: <drjones@redhat.com>, <kvm@vger.kernel.org>,
<kvmarm@lists.cs.columbia.edu>
Cc: maz@kernel.org, prime.zeng@hisilicon.com
Subject: [kvm-unit-tests PATCH v3 05/10] arm64: microbench: its: Add LPI latency test
Date: Fri, 31 Jul 2020 15:42:39 +0800 [thread overview]
Message-ID: <20200731074244.20432-6-wangjingyi11@huawei.com> (raw)
In-Reply-To: <20200731074244.20432-1-wangjingyi11@huawei.com>
Triggers LPIs through the INT command and test the latency.
Mostly inherited form commit 0ef02cd6cbaa(arm/arm64: ITS: INT
functional tests).
Signed-off-by: Jingyi Wang <wangjingyi11@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
---
arm/micro-bench.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/arm/micro-bench.c b/arm/micro-bench.c
index f8314db..82f3c07 100644
--- a/arm/micro-bench.c
+++ b/arm/micro-bench.c
@@ -20,6 +20,7 @@
*/
#include <libcflat.h>
#include <asm/gic.h>
+#include <asm/gic-v3-its.h>
#define NTIMES (1U << 16)
@@ -156,6 +157,48 @@ static void ipi_exec(void)
assert_msg(irq_received, "failed to receive IPI in time, but received %d successfully\n", nr_ipi_received);
}
+static bool lpi_prep(void)
+{
+ struct its_collection *col1;
+ struct its_device *dev2;
+
+ if (!gicv3_its_base())
+ return false;
+
+ its_enable_defaults();
+ dev2 = its_create_device(2 /* dev id */, 8 /* nb_ites */);
+ col1 = its_create_collection(1 /* col id */, 1 /* target PE */);
+ gicv3_lpi_set_config(8199, LPI_PROP_DEFAULT);
+
+ its_send_mapd_nv(dev2, true);
+ its_send_mapc_nv(col1, true);
+ its_send_invall_nv(col1);
+ its_send_mapti_nv(dev2, 8199 /* lpi id */, 20 /* event id */, col1);
+
+ gic_prep_common();
+ return true;
+}
+
+static void lpi_exec(void)
+{
+ struct its_device *dev2;
+ unsigned tries = 1 << 28;
+ static int received = 0;
+
+ irq_received = false;
+
+ dev2 = its_get_device(2);
+ its_send_int_nv(dev2, 20);
+
+ while (!irq_received && tries--)
+ cpu_relax();
+
+ if (irq_received)
+ ++received;
+
+ assert_msg(irq_received, "failed to receive LPI in time, but received %d successfully\n", received);
+}
+
static void hvc_exec(void)
{
asm volatile("mov w0, #0x4b000000; hvc #0" ::: "w0");
@@ -201,6 +244,7 @@ static struct exit_test tests[] = {
{"eoi", NULL, eoi_exec, true},
{"ipi", ipi_prep, ipi_exec, true},
{"ipi_hw", ipi_hw_prep, ipi_exec, true},
+ {"lpi", lpi_prep, lpi_exec, true},
};
struct ns_time {
--
2.19.1
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next prev parent reply other threads:[~2020-07-31 8:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-31 7:42 [kvm-unit-tests PATCH v3 00/10] arm/arm64: Add IPI/LPI/vtimer latency test Jingyi Wang
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 01/10] arm64: microbench: get correct ipi received num Jingyi Wang
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 02/10] arm64: microbench: Generalize ipi test names Jingyi Wang
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 03/10] arm64: microbench: gic: Add ipi latency test for gicv4.1 support kvm Jingyi Wang
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 04/10] arm64: its: Handle its command queue wrapping Jingyi Wang
2020-07-31 7:42 ` Jingyi Wang [this message]
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 06/10] arm64: microbench: Allow each test to specify its running times Jingyi Wang
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 07/10] arm64: microbench: Add time limit for each individual test Jingyi Wang
2020-08-01 16:13 ` Andrew Jones
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 08/10] arm64: microbench: Add vtimer latency test Jingyi Wang
2020-08-01 16:22 ` Andrew Jones
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 09/10] arm64: microbench: Add test->post() to further process test results Jingyi Wang
2020-08-01 17:03 ` Andrew Jones
2020-07-31 7:42 ` [kvm-unit-tests PATCH v3 10/10] arm64: microbench: Add timer_post() to get actual PPI latency Jingyi Wang
2020-07-31 12:01 ` [kvm-unit-tests PATCH v3 00/10] arm/arm64: Add IPI/LPI/vtimer latency test Andrew Jones
2020-08-03 2:15 ` Jingyi Wang
2020-08-01 17:40 ` Andrew Jones
2020-08-05 11:54 ` Jingyi Wang
2020-08-05 12:13 ` Marc Zyngier
2020-08-11 1:48 ` Jingyi Wang
2020-08-11 7:49 ` Marc Zyngier
2020-08-17 1:46 ` Jingyi Wang
2020-08-17 8:26 ` Marc Zyngier
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