Imported Upstream version 17.05

Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 0 insertions, 629 deletions

diff --git a/app/test/test_timer.c b/app/test/test_timer.c
deleted file mode 100644
index 2f6525a5..00000000
--- a/app/test/test_timer.c
+++ /dev/null
@@ -1,629 +0,0 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "test.h"
-
-/*
- * Timer
- * =====
- *
- * #. Stress test 1.
- *
- *    The objective of the timer stress tests is to check that there are no
- *    race conditions in list and status management. This test launches,
- *    resets and stops the timer very often on many cores at the same
- *    time.
- *
- *    - Only one timer is used for this test.
- *    - On each core, the rte_timer_manage() function is called from the main
- *      loop every 3 microseconds.
- *    - In the main loop, the timer may be reset (randomly, with a
- *      probability of 0.5 %) 100 microseconds later on a random core, or
- *      stopped (with a probability of 0.5 % also).
- *    - In callback, the timer is can be reset (randomly, with a
- *      probability of 0.5 %) 100 microseconds later on the same core or
- *      on another core (same probability), or stopped (same
- *      probability).
- *
- * # Stress test 2.
- *
- *    The objective of this test is similar to the first in that it attempts
- *    to find if there are any race conditions in the timer library. However,
- *    it is less complex in terms of operations performed and duration, as it
- *    is designed to have a predictable outcome that can be tested.
- *
- *    - A set of timers is initialized for use by the test
- *    - All cores then simultaneously are set to schedule all the timers at
- *      the same time, so conflicts should occur.
- *    - Then there is a delay while we wait for the timers to expire
- *    - Then the master lcore calls timer_manage() and we check that all
- *      timers have had their callbacks called exactly once - no more no less.
- *    - Then we repeat the process, except after setting up the timers, we have
- *      all cores randomly reschedule them.
- *    - Again we check that the expected number of callbacks has occurred when
- *      we call timer-manage.
- *
- * #. Basic test.
- *
- *    This test performs basic functional checks of the timers. The test
- *    uses four different timers that are loaded and stopped under
- *    specific conditions in specific contexts.
- *
- *    - Four timers are used for this test.
- *    - On each core, the rte_timer_manage() function is called from main loop
- *      every 3 microseconds.
- *
- *    The autotest python script checks that the behavior is correct:
- *
- *    - timer0
- *
- *      - At initialization, timer0 is loaded by the master core, on master core
- *        in "single" mode (time = 1 second).
- *      - In the first 19 callbacks, timer0 is reloaded on the same core,
- *        then, it is explicitly stopped at the 20th call.
- *      - At t=25s, timer0 is reloaded once by timer2.
- *
- *    - timer1
- *
- *      - At initialization, timer1 is loaded by the master core, on the
- *        master core in "single" mode (time = 2 seconds).
- *      - In the first 9 callbacks, timer1 is reloaded on another
- *        core. After the 10th callback, timer1 is not reloaded anymore.
- *
- *    - timer2
- *
- *      - At initialization, timer2 is loaded by the master core, on the
- *        master core in "periodical" mode (time = 1 second).
- *      - In the callback, when t=25s, it stops timer3 and reloads timer0
- *        on the current core.
- *
- *    - timer3
- *
- *      - At initialization, timer3 is loaded by the master core, on
- *        another core in "periodical" mode (time = 1 second).
- *      - It is stopped at t=25s by timer2.
- */
-
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <sys/queue.h>
-#include <math.h>
-
-#include <rte_common.h>
-#include <rte_log.h>
-#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_launch.h>
-#include <rte_cycles.h>
-#include <rte_eal.h>
-#include <rte_per_lcore.h>
-#include <rte_lcore.h>
-#include <rte_atomic.h>
-#include <rte_timer.h>
-#include <rte_random.h>
-#include <rte_malloc.h>
-
-#define TEST_DURATION_S 1 /* in seconds */
-#define NB_TIMER 4
-
-#define RTE_LOGTYPE_TESTTIMER RTE_LOGTYPE_USER3
-
-static volatile uint64_t end_time;
-static volatile int test_failed;
-
-struct mytimerinfo {
-	struct rte_timer tim;
-	unsigned id;
-	unsigned count;
-};
-
-static struct mytimerinfo mytiminfo[NB_TIMER];
-
-static void timer_basic_cb(struct rte_timer *tim, void *arg);
-
-static void
-mytimer_reset(struct mytimerinfo *timinfo, uint64_t ticks,
-	      enum rte_timer_type type, unsigned tim_lcore,
-	      rte_timer_cb_t fct)
-{
-	rte_timer_reset_sync(&timinfo->tim, ticks, type, tim_lcore,
-			     fct, timinfo);
-}
-
-/* timer callback for stress tests */
-static void
-timer_stress_cb(__attribute__((unused)) struct rte_timer *tim,
-		__attribute__((unused)) void *arg)
-{
-	long r;
-	unsigned lcore_id = rte_lcore_id();
-	uint64_t hz = rte_get_timer_hz();
-
-	if (rte_timer_pending(tim))
-		return;
-
-	r = rte_rand();
-	if ((r & 0xff) == 0) {
-		mytimer_reset(&mytiminfo[0], hz, SINGLE, lcore_id,
-			      timer_stress_cb);
-	}
-	else if ((r & 0xff) == 1) {
-		mytimer_reset(&mytiminfo[0], hz, SINGLE,
-			      rte_get_next_lcore(lcore_id, 0, 1),
-			      timer_stress_cb);
-	}
-	else if ((r & 0xff) == 2) {
-		rte_timer_stop(&mytiminfo[0].tim);
-	}
-}
-
-static int
-timer_stress_main_loop(__attribute__((unused)) void *arg)
-{
-	uint64_t hz = rte_get_timer_hz();
-	unsigned lcore_id = rte_lcore_id();
-	uint64_t cur_time;
-	int64_t diff = 0;
-	long r;
-
-	while (diff >= 0) {
-
-		/* call the timer handler on each core */
-		rte_timer_manage();
-
-		/* simulate the processing of a packet
-		 * (1 us = 2000 cycles at 2 Ghz) */
-		rte_delay_us(1);
-
-		/* randomly stop or reset timer */
-		r = rte_rand();
-		lcore_id = rte_get_next_lcore(lcore_id, 0, 1);
-		if ((r & 0xff) == 0) {
-			/* 100 us */
-			mytimer_reset(&mytiminfo[0], hz/10000, SINGLE, lcore_id,
-				      timer_stress_cb);
-		}
-		else if ((r & 0xff) == 1) {
-			rte_timer_stop_sync(&mytiminfo[0].tim);
-		}
-		cur_time = rte_get_timer_cycles();
-		diff = end_time - cur_time;
-	}
-
-	lcore_id = rte_lcore_id();
-	RTE_LOG(INFO, TESTTIMER, "core %u finished\n", lcore_id);
-
-	return 0;
-}
-
-/* Need to synchronize slave lcores through multiple steps. */
-enum { SLAVE_WAITING = 1, SLAVE_RUN_SIGNAL, SLAVE_RUNNING, SLAVE_FINISHED };
-static rte_atomic16_t slave_state[RTE_MAX_LCORE];
-
-static void
-master_init_slaves(void)
-{
-	unsigned i;
-
-	RTE_LCORE_FOREACH_SLAVE(i) {
-		rte_atomic16_set(&slave_state[i], SLAVE_WAITING);
-	}
-}
-
-static void
-master_start_slaves(void)
-{
-	unsigned i;
-
-	RTE_LCORE_FOREACH_SLAVE(i) {
-		rte_atomic16_set(&slave_state[i], SLAVE_RUN_SIGNAL);
-	}
-	RTE_LCORE_FOREACH_SLAVE(i) {
-		while (rte_atomic16_read(&slave_state[i]) != SLAVE_RUNNING)
-			rte_pause();
-	}
-}
-
-static void
-master_wait_for_slaves(void)
-{
-	unsigned i;
-
-	RTE_LCORE_FOREACH_SLAVE(i) {
-		while (rte_atomic16_read(&slave_state[i]) != SLAVE_FINISHED)
-			rte_pause();
-	}
-}
-
-static void
-slave_wait_to_start(void)
-{
-	unsigned lcore_id = rte_lcore_id();
-
-	while (rte_atomic16_read(&slave_state[lcore_id]) != SLAVE_RUN_SIGNAL)
-		rte_pause();
-	rte_atomic16_set(&slave_state[lcore_id], SLAVE_RUNNING);
-}
-
-static void
-slave_finish(void)
-{
-	unsigned lcore_id = rte_lcore_id();
-
-	rte_atomic16_set(&slave_state[lcore_id], SLAVE_FINISHED);
-}
-
-
-static volatile int cb_count = 0;
-
-/* callback for second stress test. will only be called
- * on master lcore */
-static void
-timer_stress2_cb(struct rte_timer *tim __rte_unused, void *arg __rte_unused)
-{
-	cb_count++;
-}
-
-#define NB_STRESS2_TIMERS 8192
-
-static int
-timer_stress2_main_loop(__attribute__((unused)) void *arg)
-{
-	static struct rte_timer *timers;
-	int i, ret;
-	uint64_t delay = rte_get_timer_hz() / 20;
-	unsigned lcore_id = rte_lcore_id();
-	unsigned master = rte_get_master_lcore();
-	int32_t my_collisions = 0;
-	static rte_atomic32_t collisions;
-
-	if (lcore_id == master) {
-		cb_count = 0;
-		test_failed = 0;
-		rte_atomic32_set(&collisions, 0);
-		master_init_slaves();
-		timers = rte_malloc(NULL, sizeof(*timers) * NB_STRESS2_TIMERS, 0);
-		if (timers == NULL) {
-			printf("Test Failed\n");
-			printf("- Cannot allocate memory for timers\n" );
-			test_failed = 1;
-			master_start_slaves();
-			goto cleanup;
-		}
-		for (i = 0; i < NB_STRESS2_TIMERS; i++)
-			rte_timer_init(&timers[i]);
-		master_start_slaves();
-	} else {
-		slave_wait_to_start();
-		if (test_failed)
-			goto cleanup;
-	}
-
-	/* have all cores schedule all timers on master lcore */
-	for (i = 0; i < NB_STRESS2_TIMERS; i++) {
-		ret = rte_timer_reset(&timers[i], delay, SINGLE, master,
-				timer_stress2_cb, NULL);
-		/* there will be collisions when multiple cores simultaneously
-		 * configure the same timers */
-		if (ret != 0)
-			my_collisions++;
-	}
-	if (my_collisions != 0)
-		rte_atomic32_add(&collisions, my_collisions);
-
-	/* wait long enough for timers to expire */
-	rte_delay_ms(100);
-
-	/* all cores rendezvous */
-	if (lcore_id == master) {
-		master_wait_for_slaves();
-	} else {
-		slave_finish();
-	}
-
-	/* now check that we get the right number of callbacks */
-	if (lcore_id == master) {
-		my_collisions = rte_atomic32_read(&collisions);
-		if (my_collisions != 0)
-			printf("- %d timer reset collisions (OK)\n", my_collisions);
-		rte_timer_manage();
-		if (cb_count != NB_STRESS2_TIMERS) {
-			printf("Test Failed\n");
-			printf("- Stress test 2, part 1 failed\n");
-			printf("- Expected %d callbacks, got %d\n", NB_STRESS2_TIMERS,
-					cb_count);
-			test_failed = 1;
-			master_start_slaves();
-			goto cleanup;
-		}
-		cb_count = 0;
-
-		/* proceed */
-		master_start_slaves();
-	} else {
-		/* proceed */
-		slave_wait_to_start();
-		if (test_failed)
-			goto cleanup;
-	}
-
-	/* now test again, just stop and restart timers at random after init*/
-	for (i = 0; i < NB_STRESS2_TIMERS; i++)
-		rte_timer_reset(&timers[i], delay, SINGLE, master,
-				timer_stress2_cb, NULL);
-
-	/* pick random timer to reset, stopping them first half the time */
-	for (i = 0; i < 100000; i++) {
-		int r = rand() % NB_STRESS2_TIMERS;
-		if (i % 2)
-			rte_timer_stop(&timers[r]);
-		rte_timer_reset(&timers[r], delay, SINGLE, master,
-				timer_stress2_cb, NULL);
-	}
-
-	/* wait long enough for timers to expire */
-	rte_delay_ms(100);
-
-	/* now check that we get the right number of callbacks */
-	if (lcore_id == master) {
-		master_wait_for_slaves();
-
-		rte_timer_manage();
-		if (cb_count != NB_STRESS2_TIMERS) {
-			printf("Test Failed\n");
-			printf("- Stress test 2, part 2 failed\n");
-			printf("- Expected %d callbacks, got %d\n", NB_STRESS2_TIMERS,
-					cb_count);
-			test_failed = 1;
-		} else {
-			printf("Test OK\n");
-		}
-	}
-
-cleanup:
-	if (lcore_id == master) {
-		master_wait_for_slaves();
-		if (timers != NULL) {
-			rte_free(timers);
-			timers = NULL;
-		}
-	} else {
-		slave_finish();
-	}
-
-	return 0;
-}
-
-/* timer callback for basic tests */
-static void
-timer_basic_cb(struct rte_timer *tim, void *arg)
-{
-	struct mytimerinfo *timinfo = arg;
-	uint64_t hz = rte_get_timer_hz();
-	unsigned lcore_id = rte_lcore_id();
-	uint64_t cur_time = rte_get_timer_cycles();
-
-	if (rte_timer_pending(tim))
-		return;
-
-	timinfo->count ++;
-
-	RTE_LOG(INFO, TESTTIMER,
-		"%"PRIu64": callback id=%u count=%u on core %u\n",
-		cur_time, timinfo->id, timinfo->count, lcore_id);
-
-	/* reload timer 0 on same core */
-	if (timinfo->id == 0 && timinfo->count < 20) {
-		mytimer_reset(timinfo, hz, SINGLE, lcore_id, timer_basic_cb);
-		return;
-	}
-
-	/* reload timer 1 on next core */
-	if (timinfo->id == 1 && timinfo->count < 10) {
-		mytimer_reset(timinfo, hz*2, SINGLE,
-			      rte_get_next_lcore(lcore_id, 0, 1),
-			      timer_basic_cb);
-		return;
-	}
-
-	/* Explicitelly stop timer 0. Once stop() called, we can even
-	 * erase the content of the structure: it is not referenced
-	 * anymore by any code (in case of dynamic structure, it can
-	 * be freed) */
-	if (timinfo->id == 0 && timinfo->count == 20) {
-
-		/* stop_sync() is not needed, because we know that the
-		 * status of timer is only modified by this core */
-		rte_timer_stop(tim);
-		memset(tim, 0xAA, sizeof(struct rte_timer));
-		return;
-	}
-
-	/* stop timer3, and restart a new timer0 (it was removed 5
-	 * seconds ago) for a single shot */
-	if (timinfo->id == 2 && timinfo->count == 25) {
-		rte_timer_stop_sync(&mytiminfo[3].tim);
-
-		/* need to reinit because structure was erased with 0xAA */
-		rte_timer_init(&mytiminfo[0].tim);
-		mytimer_reset(&mytiminfo[0], hz, SINGLE, lcore_id,
-			      timer_basic_cb);
-	}
-}
-
-static int
-timer_basic_main_loop(__attribute__((unused)) void *arg)
-{
-	uint64_t hz = rte_get_timer_hz();
-	unsigned lcore_id = rte_lcore_id();
-	uint64_t cur_time;
-	int64_t diff = 0;
-
-	/* launch all timers on core 0 */
-	if (lcore_id == rte_get_master_lcore()) {
-		mytimer_reset(&mytiminfo[0], hz/4, SINGLE, lcore_id,
-			      timer_basic_cb);
-		mytimer_reset(&mytiminfo[1], hz/2, SINGLE, lcore_id,
-			      timer_basic_cb);
-		mytimer_reset(&mytiminfo[2], hz/4, PERIODICAL, lcore_id,
-			      timer_basic_cb);
-		mytimer_reset(&mytiminfo[3], hz/4, PERIODICAL,
-			      rte_get_next_lcore(lcore_id, 0, 1),
-			      timer_basic_cb);
-	}
-
-	while (diff >= 0) {
-
-		/* call the timer handler on each core */
-		rte_timer_manage();
-
-		/* simulate the processing of a packet
-		 * (3 us = 6000 cycles at 2 Ghz) */
-		rte_delay_us(3);
-
-		cur_time = rte_get_timer_cycles();
-		diff = end_time - cur_time;
-	}
-	RTE_LOG(INFO, TESTTIMER, "core %u finished\n", lcore_id);
-
-	return 0;
-}
-
-static int
-timer_sanity_check(void)
-{
-#ifdef RTE_LIBEAL_USE_HPET
-	if (eal_timer_source != EAL_TIMER_HPET) {
-		printf("Not using HPET, can't sanity check timer sources\n");
-		return 0;
-	}
-
-	const uint64_t t_hz = rte_get_tsc_hz();
-	const uint64_t h_hz = rte_get_hpet_hz();
-	printf("Hertz values: TSC = %"PRIu64", HPET = %"PRIu64"\n", t_hz, h_hz);
-
-	const uint64_t tsc_start = rte_get_tsc_cycles();
-	const uint64_t hpet_start = rte_get_hpet_cycles();
-	rte_delay_ms(100); /* delay 1/10 second */
-	const uint64_t tsc_end = rte_get_tsc_cycles();
-	const uint64_t hpet_end = rte_get_hpet_cycles();
-	printf("Measured cycles: TSC = %"PRIu64", HPET = %"PRIu64"\n",
-			tsc_end-tsc_start, hpet_end-hpet_start);
-
-	const double tsc_time = (double)(tsc_end - tsc_start)/t_hz;
-	const double hpet_time = (double)(hpet_end - hpet_start)/h_hz;
-	/* get the percentage that the times differ by */
-	const double time_diff = fabs(tsc_time - hpet_time)*100/tsc_time;
-	printf("Measured time: TSC = %.4f, HPET = %.4f\n", tsc_time, hpet_time);
-
-	printf("Elapsed time measured by TSC and HPET differ by %f%%\n",
-			time_diff);
-	if (time_diff > 0.1) {
-		printf("Error times differ by >0.1%%");
-		return -1;
-	}
-#endif
-	return 0;
-}
-
-static int
-test_timer(void)
-{
-	unsigned i;
-	uint64_t cur_time;
-	uint64_t hz;
-
-	/* sanity check our timer sources and timer config values */
-	if (timer_sanity_check() < 0) {
-		printf("Timer sanity checks failed\n");
-		return TEST_FAILED;
-	}
-
-	if (rte_lcore_count() < 2) {
-		printf("not enough lcores for this test\n");
-		return TEST_FAILED;
-	}
-
-	/* init timer */
-	for (i=0; i<NB_TIMER; i++) {
-		memset(&mytiminfo[i], 0, sizeof(struct mytimerinfo));
-		mytiminfo[i].id = i;
-		rte_timer_init(&mytiminfo[i].tim);
-	}
-
-	/* calculate the "end of test" time */
-	cur_time = rte_get_timer_cycles();
-	hz = rte_get_timer_hz();
-	end_time = cur_time + (hz * TEST_DURATION_S);
-
-	/* start other cores */
-	printf("Start timer stress tests\n");
-	rte_eal_mp_remote_launch(timer_stress_main_loop, NULL, CALL_MASTER);
-	rte_eal_mp_wait_lcore();
-
-	/* stop timer 0 used for stress test */
-	rte_timer_stop_sync(&mytiminfo[0].tim);
-
-	/* run a second, slightly different set of stress tests */
-	printf("\nStart timer stress tests 2\n");
-	test_failed = 0;
-	rte_eal_mp_remote_launch(timer_stress2_main_loop, NULL, CALL_MASTER);
-	rte_eal_mp_wait_lcore();
-	if (test_failed)
-		return TEST_FAILED;
-
-	/* calculate the "end of test" time */
-	cur_time = rte_get_timer_cycles();
-	hz = rte_get_timer_hz();
-	end_time = cur_time + (hz * TEST_DURATION_S);
-
-	/* start other cores */
-	printf("\nStart timer basic tests\n");
-	rte_eal_mp_remote_launch(timer_basic_main_loop, NULL, CALL_MASTER);
-	rte_eal_mp_wait_lcore();
-
-	/* stop all timers */
-	for (i=0; i<NB_TIMER; i++) {
-		rte_timer_stop_sync(&mytiminfo[i].tim);
-	}
-
-	rte_timer_dump_stats(stdout);
-
-	return TEST_SUCCESS;
-}
-
-REGISTER_TEST_COMMAND(timer_autotest, test_timer);