test/timer: exercise new APIs in secondary process

This commit adds an autotest which exercises new timer reset/stop APIs
in a secondary process. Timers are created, and sometimes stopped, in
the secondary process, and their expiration is checked for and handled
in the primary process.

Signed-off-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>

diff --git a/app/test/Makefile b/app/test/Makefile
index b28bed2d47858d47b2fbeb6a4d603835f487970b..54f70679286eae52c4f8fcd2093d04d66650b399 100644 (file)
--- a/app/test/Makefile
+++ b/app/test/Makefile
@@ -96,6 +96,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_STACK) += test_stack_perf.c
 SRCS-$(CONFIG_RTE_LIBRTE_TIMER) += test_timer.c
 SRCS-$(CONFIG_RTE_LIBRTE_TIMER) += test_timer_perf.c
 SRCS-$(CONFIG_RTE_LIBRTE_TIMER) += test_timer_racecond.c
+SRCS-$(CONFIG_RTE_LIBRTE_TIMER) += test_timer_secondary.c
 
 SRCS-y += test_mempool.c
 SRCS-y += test_mempool_perf.c

diff --git a/app/test/meson.build b/app/test/meson.build
index 5e056eb5995c9d7ec6ce83e250aed4f2ca727e9e..80cdea5d13aba91b8c9711b5b1648497132525f7 100644 (file)
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -109,6 +109,7 @@ test_sources = files('commands.c',
        'test_timer.c',
        'test_timer_perf.c',
        'test_timer_racecond.c',
+       'test_timer_secondary.c',
        'test_ticketlock.c',
        'test_version.c',
        'virtual_pmd.c'

diff --git a/app/test/test.c b/app/test/test.c
index 1c91ed675c42972787bbd0fa49b4f580b0ba8e16..fbe446440f85f69891c190c18b1646b60ece64ad 100644 (file)
--- a/app/test/test.c
+++ b/app/test/test.c
@@ -67,6 +67,7 @@ do_recursive_call(void)
                        { "test_memory_flags", no_action },
                        { "test_file_prefix", no_action },
                        { "test_no_huge_flag", no_action },
+                       { "timer_secondary_spawn_wait", test_timer_secondary },
        };
 
        if (recursive_call == NULL)
@@ -130,7 +131,10 @@ main(int argc, char **argv)
        }
 
 #ifdef RTE_LIBRTE_TIMER
-       rte_timer_subsystem_init();
+       if (rte_timer_subsystem_init() < 0) {
+               ret = -1;
+               goto out;
+       }
 #endif
 
        if (commands_init() < 0) {

diff --git a/app/test/test.h b/app/test/test.h
index 9b3846b1ed466ab0f3f042444c800b93c48b8e70..ac0c50616c541c9af89f363169b91e6495000f49 100644 (file)
--- a/app/test/test.h
+++ b/app/test/test.h
@@ -156,6 +156,7 @@ extern const char *prgname;
 int commands_init(void);
 
 int test_mp_secondary(void);
+int test_timer_secondary(void);
 
 int test_set_rxtx_conf(cmdline_fixed_string_t mode);
 int test_set_rxtx_anchor(cmdline_fixed_string_t type);

diff --git a/app/test/test_timer_secondary.c b/app/test/test_timer_secondary.c
new file mode 100644 (file)
index 0000000..31e4a7f
--- /dev/null
+++ b/app/test/test_timer_secondary.c
@@ -0,0 +1,215 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <rte_eal.h>
+#include <rte_lcore.h>
+#include <rte_debug.h>
+#include <rte_memzone.h>
+#include <rte_atomic.h>
+#include <rte_timer.h>
+#include <rte_cycles.h>
+#include <rte_mempool.h>
+#include <rte_random.h>
+
+#include "test.h"
+#include "process.h"
+
+#define NUM_TIMERS             (1 << 20) /* ~1M timers */
+#define NUM_LCORES_NEEDED      3
+#define TEST_INFO_MZ_NAME      "test_timer_info_mz"
+#define MSECPERSEC             1E3
+
+#define launch_proc(ARGV) \
+       process_dup(ARGV, sizeof(ARGV)/(sizeof(ARGV[0])), __func__)
+
+struct test_info {
+       unsigned int mstr_lcore;
+       unsigned int mgr_lcore;
+       unsigned int sec_lcore;
+       uint32_t timer_data_id;
+       volatile int expected_count;
+       volatile int expired_count;
+       struct rte_mempool *tim_mempool;
+       struct rte_timer *expired_timers[NUM_TIMERS];
+       int expired_timers_idx;
+       volatile int exit_flag;
+};
+
+static int
+timer_secondary_spawn_wait(unsigned int lcore)
+{
+       char coremask[10];
+#ifdef RTE_EXEC_ENV_LINUXAPP
+       char tmp[PATH_MAX] = {0};
+       char prefix[PATH_MAX] = {0};
+
+       get_current_prefix(tmp, sizeof(tmp));
+
+       snprintf(prefix, sizeof(prefix), "--file-prefix=%s", tmp);
+#else
+       const char *prefix = "";
+#endif
+       char const *argv[] = {
+               prgname,
+               "-c", coremask,
+               "--proc-type=secondary",
+               prefix
+       };
+
+       snprintf(coremask, sizeof(coremask), "%x", (1 << lcore));
+
+       return launch_proc(argv);
+}
+
+static void
+handle_expired_timer(struct rte_timer *tim)
+{
+       struct test_info *test_info = tim->arg;
+
+       test_info->expired_count++;
+       test_info->expired_timers[test_info->expired_timers_idx++] = tim;
+}
+
+static int
+timer_manage_loop(void *arg)
+{
+#define TICK_MSECS 1
+       uint64_t tick_cycles = TICK_MSECS * rte_get_timer_hz() / MSECPERSEC;
+       uint64_t prev_tsc = 0, cur_tsc, diff_tsc;
+       struct test_info *test_info = arg;
+
+       while (!test_info->exit_flag) {
+               cur_tsc = rte_rdtsc();
+               diff_tsc = cur_tsc - prev_tsc;
+
+               if (diff_tsc > tick_cycles) {
+                       /* Scan timer list for expired timers */
+                       rte_timer_alt_manage(test_info->timer_data_id,
+                                            NULL,
+                                            0,
+                                            handle_expired_timer);
+
+                       /* Return expired timer objects back to mempool */
+                       rte_mempool_put_bulk(test_info->tim_mempool,
+                                            (void **)test_info->expired_timers,
+                                            test_info->expired_timers_idx);
+
+                       test_info->expired_timers_idx = 0;
+
+                       prev_tsc = cur_tsc;
+               }
+
+               rte_pause();
+       }
+
+       return 0;
+}
+
+int
+test_timer_secondary(void)
+{
+       int proc_type = rte_eal_process_type();
+       const struct rte_memzone *mz;
+       struct test_info *test_info;
+       int ret;
+
+       if (proc_type == RTE_PROC_PRIMARY) {
+               mz = rte_memzone_reserve(TEST_INFO_MZ_NAME, sizeof(*test_info),
+                                        SOCKET_ID_ANY, 0);
+               test_info = mz->addr;
+               TEST_ASSERT_NOT_NULL(test_info, "Couldn't allocate memory for "
+                                    "test data");
+
+               TEST_ASSERT(rte_lcore_count() >= NUM_LCORES_NEEDED,
+                           "at least %d lcores needed to run tests",
+                           NUM_LCORES_NEEDED);
+
+               test_info->tim_mempool = rte_mempool_create("test_timer_mp",
+                               NUM_TIMERS, sizeof(struct rte_timer), 0, 0,
+                               NULL, NULL, NULL, NULL, rte_socket_id(), 0);
+
+               ret = rte_timer_data_alloc(&test_info->timer_data_id);
+               TEST_ASSERT_SUCCESS(ret, "Failed to allocate timer data "
+                                   "instance");
+
+               unsigned int *mstr_lcorep = &test_info->mstr_lcore;
+               unsigned int *mgr_lcorep = &test_info->mgr_lcore;
+               unsigned int *sec_lcorep = &test_info->sec_lcore;
+
+               *mstr_lcorep = rte_get_master_lcore();
+               *mgr_lcorep = rte_get_next_lcore(*mstr_lcorep, 1, 1);
+               *sec_lcorep = rte_get_next_lcore(*mgr_lcorep, 1, 1);
+
+               ret = rte_eal_remote_launch(timer_manage_loop,
+                                           (void *)test_info,
+                                           *mgr_lcorep);
+               TEST_ASSERT_SUCCESS(ret, "Failed to launch timer manage loop");
+
+               ret = timer_secondary_spawn_wait(*sec_lcorep);
+               TEST_ASSERT_SUCCESS(ret, "Secondary process execution failed");
+
+               rte_delay_ms(2000);
+
+               test_info->exit_flag = 1;
+               rte_eal_wait_lcore(*mgr_lcorep);
+
+#ifdef RTE_LIBRTE_TIMER_DEBUG
+               rte_timer_alt_dump_stats(test_info->timer_data_id, stdout);
+#endif
+
+               return test_info->expected_count == test_info->expired_count ?
+                       TEST_SUCCESS : TEST_FAILED;
+
+       } else if (proc_type == RTE_PROC_SECONDARY) {
+               uint64_t ticks, timeout_ms;
+               struct rte_timer *tim;
+               int i;
+
+               mz = rte_memzone_lookup(TEST_INFO_MZ_NAME);
+               test_info = mz->addr;
+               TEST_ASSERT_NOT_NULL(test_info, "Couldn't lookup memzone for "
+                                    "test info");
+
+               for (i = 0; i < NUM_TIMERS; i++) {
+                       rte_mempool_get(test_info->tim_mempool, (void **)&tim);
+
+                       rte_timer_init(tim);
+
+                       /* generate timeouts between 10 and 160 ms */
+                       timeout_ms = ((rte_rand() & 0xF) + 1) * 10;
+                       ticks = timeout_ms * rte_get_timer_hz() / MSECPERSEC;
+
+                       ret = rte_timer_alt_reset(test_info->timer_data_id,
+                                                 tim, ticks, SINGLE,
+                                                 test_info->mgr_lcore, NULL,
+                                                 test_info);
+                       if (ret < 0)
+                               return TEST_FAILED;
+
+                       test_info->expected_count++;
+
+                       /* randomly leave timer running or stop it */
+                       if (rte_rand() & 1)
+                               continue;
+
+                       ret = rte_timer_alt_stop(test_info->timer_data_id,
+                                                tim);
+                       if (ret == 0) {
+                               test_info->expected_count--;
+                               rte_mempool_put(test_info->tim_mempool,
+                                               (void *)tim);
+                       }
+
+               }
+
+               return TEST_SUCCESS;
+       }
+
+       return TEST_FAILED;
+}
+
+REGISTER_TEST_COMMAND(timer_secondary_autotest, test_timer_secondary);

diff --git a/lib/librte_timer/rte_timer.c b/lib/librte_timer/rte_timer.c
index ae5d2369ce03c5b71952271f8fb612e3cc4a8bcb..eb460098b6bf86bfefc07ade4ee4605bc4c4bea5 100644 (file)
--- a/lib/librte_timer/rte_timer.c
+++ b/lib/librte_timer/rte_timer.c
@@ -582,11 +582,6 @@ rte_timer_alt_reset(uint32_t timer_data_id, struct rte_timer *tim,
 
        TIMER_DATA_VALID_GET_OR_ERR_RET(timer_data_id, timer_data, -EINVAL);
 
-       if (unlikely((tim_lcore != (unsigned int)LCORE_ID_ANY) &&
-                       !(rte_lcore_is_enabled(tim_lcore) ||
-                         rte_lcore_has_role(tim_lcore, ROLE_SERVICE))))
-               return -1;
-
        if (type == PERIODICAL)
                period = ticks;
        else