From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id E52FFA0546; Wed, 26 May 2021 13:58:55 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 4D323410E1; Wed, 26 May 2021 13:58:55 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by mails.dpdk.org (Postfix) with ESMTP id 19C0240041 for ; Wed, 26 May 2021 13:58:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1622030332; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=C37YYLkAc0KfW2bvUtAeoL1ZOg/0Bp3Su+2UxIgR45Q=; b=WwrSk50mA8uIlOlnxvXzQPcqnPOtc64VTptDJ+wo0C1pYxA5UhCr1oUdg8YdlqDeg0B+xd kZmm1IHgqPr+11AvU+qFR4/WM6K5+ICH8x7TdiC4u0c+rRAkRgfE9qah+4M1NzLkUKANZl 4uDSukk5dvhsb4mcz42Gc97BR3iQU0E= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-345-x1Ov2IJnMuCDO03JMj4fuA-1; Wed, 26 May 2021 07:58:48 -0400 X-MC-Unique: x1Ov2IJnMuCDO03JMj4fuA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CF70C8189DA; Wed, 26 May 2021 11:58:46 +0000 (UTC) Received: from RHTPC1VM0NT (ovpn-116-248.rdu2.redhat.com [10.10.116.248]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 45D0E60C5A; Wed, 26 May 2021 11:58:42 +0000 (UTC) From: Aaron Conole To: dev@dpdk.org Cc: David Marchand , ci@dpdk.org, Michael Santana , Ilya Maximets , Thomas Monjalon In-Reply-To: References: Date: Wed, 26 May 2021 07:58:40 -0400 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=aconole@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Subject: [dpdk-dev] [PATCH v2] test: remove strict timing requirements from alarm and cycles tests X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The tests 'alarm_autotest' and 'cycles_autotest' rely on the underlying system having very accurate and precise timing. On systems where the timing isn't as rigid, or the load is particularly high, these tests are unreliable since the wake latency from the scheduler can be high enough to miss the timing window. Remove the timing related tests from the test suites. These tests now ensure the add/remove callback infrastructure unit tests, but drop the waits and reliance on system timing and load. This avoids FAIL on various testing infrastructures. Signed-off-by: Aaron Conole --- v2: Drop the timing requirements, but keep the API calls app/test/test_alarm.c | 165 ----------------------------------------- app/test/test_cycles.c | 78 ------------------- 2 files changed, 243 deletions(-) diff --git a/app/test/test_alarm.c b/app/test/test_alarm.c index 951b7f07b3..6eea751cae 100644 --- a/app/test/test_alarm.c +++ b/app/test/test_alarm.c @@ -28,175 +28,13 @@ test_alarm_callback(void *cb_arg) printf("Callback setting flag - OK. [cb_arg = %p]\n", cb_arg); } -static rte_atomic32_t cb_count; - -static void -test_multi_cb(void *arg) -{ - rte_atomic32_inc(&cb_count); - printf("In %s - arg = %p\n", __func__, arg); -} - -static volatile int recursive_error = 0; - -static void -test_remove_in_callback(void *arg) -{ - printf("In %s - arg = %p\n", __func__, arg); - if (rte_eal_alarm_cancel(test_remove_in_callback, arg) || - rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1)) { - printf("Error - cancelling callback from within function succeeded!\n"); - recursive_error = 1; - } - flag = (int)((uintptr_t)arg); -} - -static volatile int flag_2; - -static void -test_remove_in_callback_2(void *arg) -{ - if (rte_eal_alarm_cancel(test_remove_in_callback_2, arg) || rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1)) { - printf("Error - cancelling callback of test_remove_in_callback_2\n"); - return; - } - flag_2 = 1; -} - -static int -test_multi_alarms(void) -{ - int rm_count = 0; - int count = 0; - cb_count.cnt = 0; - - printf("Expect 6 callbacks in order...\n"); - /* add two alarms in order */ - rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1); - rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2); - - /* now add in reverse order */ - rte_eal_alarm_set(60 * US_PER_MS, test_multi_cb, (void *)6); - rte_eal_alarm_set(50 * US_PER_MS, test_multi_cb, (void *)5); - rte_eal_alarm_set(40 * US_PER_MS, test_multi_cb, (void *)4); - rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3); - - /* wait for expiry */ - rte_delay_ms(65); - if (cb_count.cnt != 6) { - printf("Missing callbacks\n"); - /* remove any callbacks that might remain */ - rte_eal_alarm_cancel(test_multi_cb, (void *)-1); - return -1; - } - - cb_count.cnt = 0; - printf("Expect only callbacks with args 1 and 3...\n"); - /* Add 3 flags, then delete one */ - rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3); - rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2); - rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1); - rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *)2); - - rte_delay_ms(35); - if (cb_count.cnt != 2 || rm_count != 1) { - printf("Error: invalid flags count or alarm removal failure" - " - flags value = %d, expected = %d\n", - (int)cb_count.cnt, 2); - /* remove any callbacks that might remain */ - rte_eal_alarm_cancel(test_multi_cb, (void *)-1); - return -1; - } - - printf("Testing adding and then removing multiple alarms\n"); - /* finally test that no callbacks are called if we delete them all*/ - rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1); - rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)2); - rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)3); - rm_count = rte_eal_alarm_cancel(test_alarm_callback, (void *)-1); - if (rm_count != 0) { - printf("Error removing non-existant alarm succeeded\n"); - rte_eal_alarm_cancel(test_multi_cb, (void *) -1); - return -1; - } - rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *) -1); - if (rm_count != 3) { - printf("Error removing all pending alarm callbacks\n"); - return -1; - } - - /* Test that we cannot cancel an alarm from within the callback itself - * Also test that we can cancel head-of-line callbacks ok.*/ - flag = 0; - recursive_error = 0; - rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1); - rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback, (void *)2); - rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)1); - if (rm_count != 1) { - printf("Error cancelling head-of-list callback\n"); - return -1; - } - rte_delay_ms(15); - if (flag != 0) { - printf("Error, cancelling head-of-list leads to premature callback\n"); - return -1; - } - - while (flag != 2 && count++ < RTE_TEST_MAX_REPEAT) - rte_delay_ms(10); - - if (flag != 2) { - printf("Error - expected callback not called\n"); - rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1); - return -1; - } - if (recursive_error == 1) - return -1; - - /* Check if it can cancel all for the same callback */ - printf("Testing canceling all for the same callback\n"); - flag_2 = 0; - rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1); - rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback_2, (void *)2); - rte_eal_alarm_set(30 * US_PER_MS, test_remove_in_callback_2, (void *)3); - rte_eal_alarm_set(40 * US_PER_MS, test_remove_in_callback, (void *)4); - rm_count = rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1); - if (rm_count != 2) { - printf("Error, cannot cancel all for the same callback\n"); - return -1; - } - rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1); - if (rm_count != 2) { - printf("Error, cannot cancel all for the same callback\n"); - return -1; - } - - return 0; -} - static int test_alarm(void) { - int count = 0; #ifdef RTE_EXEC_ENV_FREEBSD printf("The alarm API is not supported on FreeBSD\n"); return 0; #endif - /* check if the callback will be called */ - printf("check if the callback will be called\n"); - flag = 0; - if (rte_eal_alarm_set(RTE_TEST_ALARM_TIMEOUT * US_PER_MS, - test_alarm_callback, NULL) < 0) { - printf("fail to set alarm callback\n"); - return -1; - } - while (flag == 0 && count++ < RTE_TEST_MAX_REPEAT) - rte_delay_ms(RTE_TEST_CHECK_PERIOD); - - if (flag == 0){ - printf("Callback not called\n"); - return -1; - } /* check if it will fail to set alarm with wrong us value */ printf("check if it will fail to set alarm with wrong ms values\n"); @@ -225,9 +63,6 @@ test_alarm(void) return -1; } - if (test_multi_alarms() != 0) - return -1; - return 0; } diff --git a/app/test/test_cycles.c b/app/test/test_cycles.c index 97d42f3032..4765f11722 100644 --- a/app/test/test_cycles.c +++ b/app/test/test_cycles.c @@ -12,84 +12,6 @@ #define N 10000 -/* - * Cycles test - * =========== - * - * - Loop N times and check that the timer always increments and - * never decrements during this loop. - * - * - Wait one second using rte_usleep() and check that the increment - * of cycles is correct with regard to the frequency of the timer. - */ - -static int -check_wait_one_second(void) -{ - uint64_t cycles, prev_cycles; - uint64_t hz = rte_get_timer_hz(); - uint64_t max_inc = (hz / 100); /* 10 ms max between 2 reads */ - - /* check that waiting 1 second is precise */ - prev_cycles = rte_get_timer_cycles(); - rte_delay_us(1000000); - cycles = rte_get_timer_cycles(); - - if ((uint64_t)(cycles - prev_cycles) > (hz + max_inc)) { - printf("delay_us is not accurate: too long\n"); - return -1; - } - if ((uint64_t)(cycles - prev_cycles) < (hz - max_inc)) { - printf("delay_us is not accurate: too short\n"); - return -1; - } - - return 0; -} - -static int -test_cycles(void) -{ - unsigned i; - uint64_t start_cycles, cycles, prev_cycles; - uint64_t hz = rte_get_timer_hz(); - uint64_t max_inc = (hz / 100); /* 10 ms max between 2 reads */ - - /* check that the timer is always incrementing */ - start_cycles = rte_get_timer_cycles(); - prev_cycles = start_cycles; - for (i=0; i max_inc) { - printf("increment too high or going backwards\n"); - return -1; - } - prev_cycles = cycles; - } - - return check_wait_one_second(); -} - -REGISTER_TEST_COMMAND(cycles_autotest, test_cycles); - -/* - * One second precision test with rte_delay_us_sleep. - */ - -static int -test_delay_us_sleep(void) -{ - int rv; - - rte_delay_us_callback_register(rte_delay_us_sleep); - rv = check_wait_one_second(); - /* restore original delay function */ - rte_delay_us_callback_register(rte_delay_us_block); - - return rv; -} - -REGISTER_TEST_COMMAND(delay_us_sleep_autotest, test_delay_us_sleep); /* * rte_delay_us_callback test -- 2.31.1