From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 578D8C433DF for ; Fri, 31 Jul 2020 08:09:40 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 9E2732074B for ; Fri, 31 Jul 2020 08:09:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E2732074B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 2B9614A588; Fri, 31 Jul 2020 04:09:39 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 47B7znLVxmZU; Fri, 31 Jul 2020 04:09:38 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 31FE64B3E0; Fri, 31 Jul 2020 04:09:38 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 21A9B4B3DB for ; Fri, 31 Jul 2020 04:09:37 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mE3jCp30zEry for ; Fri, 31 Jul 2020 04:09:35 -0400 (EDT) Received: from huawei.com (szxga06-in.huawei.com [45.249.212.32]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 3E94C4A588 for ; Fri, 31 Jul 2020 04:09:35 -0400 (EDT) Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id C5525B7A01AD3F83687B; Fri, 31 Jul 2020 15:43:36 +0800 (CST) Received: from DESKTOP-FPN2511.china.huawei.com (10.174.187.42) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.487.0; Fri, 31 Jul 2020 15:43:26 +0800 From: Jingyi Wang To: , , Subject: [kvm-unit-tests PATCH v3 05/10] arm64: microbench: its: Add LPI latency test Date: Fri, 31 Jul 2020 15:42:39 +0800 Message-ID: <20200731074244.20432-6-wangjingyi11@huawei.com> X-Mailer: git-send-email 2.14.1.windows.1 In-Reply-To: <20200731074244.20432-1-wangjingyi11@huawei.com> References: <20200731074244.20432-1-wangjingyi11@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.187.42] X-CFilter-Loop: Reflected Cc: maz@kernel.org, prime.zeng@hisilicon.com X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Archived-At: List-Archive: 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 Reviewed-by: Eric Auger --- 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 #include +#include #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 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm