diff options
Diffstat (limited to 'app/test/test_timer_racecond.c')
| -rw-r--r-- | app/test/test_timer_racecond.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/app/test/test_timer_racecond.c b/app/test/test_timer_racecond.c deleted file mode 100644 index 7824ec4b..00000000 --- a/app/test/test_timer_racecond.c +++ /dev/null @@ -1,205 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2015 Akamai Technologies. - * 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" - -#include <stdio.h> -#include <unistd.h> -#include <inttypes.h> -#include <rte_cycles.h> -#include <rte_timer.h> -#include <rte_common.h> -#include <rte_lcore.h> -#include <rte_random.h> -#include <rte_malloc.h> - -#undef TEST_TIMER_RACECOND_VERBOSE - -#ifdef RTE_EXEC_ENV_LINUXAPP -#define usec_delay(us) usleep(us) -#else -#define usec_delay(us) rte_delay_us(us) -#endif - -#define BILLION (1UL << 30) - -#define TEST_DURATION_S 20 /* in seconds */ -#define N_TIMERS 50 - -static struct rte_timer timer[N_TIMERS]; -static unsigned timer_lcore_id[N_TIMERS]; - -static unsigned master; -static volatile unsigned stop_slaves; - -static int reload_timer(struct rte_timer *tim); - -static void -timer_cb(struct rte_timer *tim, void *arg __rte_unused) -{ - /* Simulate slow callback function, 100 us. */ - rte_delay_us(100); - -#ifdef TEST_TIMER_RACECOND_VERBOSE - if (tim == &timer[0]) - printf("------------------------------------------------\n"); - printf("timer_cb: core %u timer %lu\n", - rte_lcore_id(), tim - timer); -#endif - (void)reload_timer(tim); -} - -RTE_DEFINE_PER_LCORE(unsigned, n_reset_collisions); - -static int -reload_timer(struct rte_timer *tim) -{ - /* Make timer expire roughly when the TSC hits the next BILLION - * multiple. Add in timer's index to make them expire in nearly - * sorted order. This makes all timers somewhat synchronized, - * firing ~2-3 times per second, assuming 2-3 GHz TSCs. - */ - uint64_t ticks = BILLION - (rte_get_timer_cycles() % BILLION) + - (tim - timer); - int ret; - - ret = rte_timer_reset(tim, ticks, PERIODICAL, master, timer_cb, NULL); - if (ret != 0) { -#ifdef TEST_TIMER_RACECOND_VERBOSE - printf("- core %u failed to reset timer %lu (OK)\n", - rte_lcore_id(), tim - timer); -#endif - RTE_PER_LCORE(n_reset_collisions) += 1; - } - return ret; -} - -static int -slave_main_loop(__attribute__((unused)) void *arg) -{ - unsigned lcore_id = rte_lcore_id(); - unsigned i; - - RTE_PER_LCORE(n_reset_collisions) = 0; - - printf("Starting main loop on core %u\n", lcore_id); - - while (!stop_slaves) { - /* Wait until the timer manager is running. - * We know it's running when we see timer[0] NOT pending. - */ - if (rte_timer_pending(&timer[0])) { - rte_pause(); - continue; - } - - /* Now, go cause some havoc! - * Reload our timers. - */ - for (i = 0; i < N_TIMERS; i++) { - if (timer_lcore_id[i] == lcore_id) - (void)reload_timer(&timer[i]); - } - usec_delay(100*1000); /* sleep 100 ms */ - } - - if (RTE_PER_LCORE(n_reset_collisions) != 0) { - printf("- core %u, %u reset collisions (OK)\n", - lcore_id, RTE_PER_LCORE(n_reset_collisions)); - } - return 0; -} - -static int -test_timer_racecond(void) -{ - int ret; - uint64_t hz; - uint64_t cur_time; - uint64_t end_time; - int64_t diff = 0; - unsigned lcore_id; - unsigned i; - - master = lcore_id = rte_lcore_id(); - hz = rte_get_timer_hz(); - - /* init and start timers */ - for (i = 0; i < N_TIMERS; i++) { - rte_timer_init(&timer[i]); - ret = reload_timer(&timer[i]); - TEST_ASSERT(ret == 0, "reload_timer failed"); - - /* Distribute timers to slaves. - * Note that we assign timer[0] to the master. - */ - timer_lcore_id[i] = lcore_id; - lcore_id = rte_get_next_lcore(lcore_id, 1, 1); - } - - /* calculate the "end of test" time */ - cur_time = rte_get_timer_cycles(); - end_time = cur_time + (hz * TEST_DURATION_S); - - /* start slave cores */ - stop_slaves = 0; - printf("Start timer manage race condition test (%u seconds)\n", - TEST_DURATION_S); - rte_eal_mp_remote_launch(slave_main_loop, NULL, SKIP_MASTER); - - while (diff >= 0) { - /* run the timers */ - rte_timer_manage(); - - /* wait 100 ms */ - usec_delay(100*1000); - - cur_time = rte_get_timer_cycles(); - diff = end_time - cur_time; - } - - /* stop slave cores */ - printf("Stopping timer manage race condition test\n"); - stop_slaves = 1; - rte_eal_mp_wait_lcore(); - - /* stop timers */ - for (i = 0; i < N_TIMERS; i++) { - ret = rte_timer_stop(&timer[i]); - TEST_ASSERT(ret == 0, "rte_timer_stop failed"); - } - - return TEST_SUCCESS; -} - -REGISTER_TEST_COMMAND(timer_racecond_autotest, test_timer_racecond); |