From bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 Mon Sep 17 00:00:00 2001 From: RajithaY Date: Tue, 25 Apr 2017 03:31:15 -0700 Subject: Adding qemu as a submodule of KVMFORNFV This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY --- qemu/tests/test-rcu-list.c | 312 --------------------------------------------- 1 file changed, 312 deletions(-) delete mode 100644 qemu/tests/test-rcu-list.c (limited to 'qemu/tests/test-rcu-list.c') diff --git a/qemu/tests/test-rcu-list.c b/qemu/tests/test-rcu-list.c deleted file mode 100644 index 79d375014..000000000 --- a/qemu/tests/test-rcu-list.c +++ /dev/null @@ -1,312 +0,0 @@ -/* - * rcuq_test.c - * - * usage: rcuq_test - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - * Copyright (c) 2013 Mike D. Day, IBM Corporation. - */ - -#include "qemu/osdep.h" -#include -#include "qemu/atomic.h" -#include "qemu/rcu.h" -#include "qemu/thread.h" -#include "qemu/rcu_queue.h" - -/* - * Test variables. - */ - -static QemuMutex counts_mutex; -static long long n_reads = 0LL; -static long long n_updates = 0LL; -static long long n_reclaims = 0LL; -static long long n_nodes_removed = 0LL; -static long long n_nodes = 0LL; -static int g_test_in_charge = 0; - -static int nthreadsrunning; - -#define GOFLAG_INIT 0 -#define GOFLAG_RUN 1 -#define GOFLAG_STOP 2 - -static volatile int goflag = GOFLAG_INIT; - -#define RCU_READ_RUN 1000 -#define RCU_UPDATE_RUN 10 -#define NR_THREADS 100 -#define RCU_Q_LEN 100 - -static QemuThread threads[NR_THREADS]; -static struct rcu_reader_data *data[NR_THREADS]; -static int n_threads; - -static int select_random_el(int max) -{ - return (rand() % max); -} - - -static void create_thread(void *(*func)(void *)) -{ - if (n_threads >= NR_THREADS) { - fprintf(stderr, "Thread limit of %d exceeded!\n", NR_THREADS); - exit(-1); - } - qemu_thread_create(&threads[n_threads], "test", func, &data[n_threads], - QEMU_THREAD_JOINABLE); - n_threads++; -} - -static void wait_all_threads(void) -{ - int i; - - for (i = 0; i < n_threads; i++) { - qemu_thread_join(&threads[i]); - } - n_threads = 0; -} - - -struct list_element { - QLIST_ENTRY(list_element) entry; - struct rcu_head rcu; -}; - -static void reclaim_list_el(struct rcu_head *prcu) -{ - struct list_element *el = container_of(prcu, struct list_element, rcu); - g_free(el); - /* Accessed only from call_rcu thread. */ - n_reclaims++; -} - -static QLIST_HEAD(q_list_head, list_element) Q_list_head; - -static void *rcu_q_reader(void *arg) -{ - long long n_reads_local = 0; - struct list_element *el; - - rcu_register_thread(); - - *(struct rcu_reader_data **)arg = &rcu_reader; - atomic_inc(&nthreadsrunning); - while (goflag == GOFLAG_INIT) { - g_usleep(1000); - } - - while (goflag == GOFLAG_RUN) { - rcu_read_lock(); - QLIST_FOREACH_RCU(el, &Q_list_head, entry) { - n_reads_local++; - if (goflag == GOFLAG_STOP) { - break; - } - } - rcu_read_unlock(); - - g_usleep(100); - } - qemu_mutex_lock(&counts_mutex); - n_reads += n_reads_local; - qemu_mutex_unlock(&counts_mutex); - - rcu_unregister_thread(); - return NULL; -} - - -static void *rcu_q_updater(void *arg) -{ - int j, target_el; - long long n_nodes_local = 0; - long long n_updates_local = 0; - long long n_removed_local = 0; - struct list_element *el, *prev_el; - - *(struct rcu_reader_data **)arg = &rcu_reader; - atomic_inc(&nthreadsrunning); - while (goflag == GOFLAG_INIT) { - g_usleep(1000); - } - - while (goflag == GOFLAG_RUN) { - target_el = select_random_el(RCU_Q_LEN); - j = 0; - /* FOREACH_RCU could work here but let's use both macros */ - QLIST_FOREACH_SAFE_RCU(prev_el, &Q_list_head, entry, el) { - j++; - if (target_el == j) { - QLIST_REMOVE_RCU(prev_el, entry); - /* may be more than one updater in the future */ - call_rcu1(&prev_el->rcu, reclaim_list_el); - n_removed_local++; - break; - } - } - if (goflag == GOFLAG_STOP) { - break; - } - target_el = select_random_el(RCU_Q_LEN); - j = 0; - QLIST_FOREACH_RCU(el, &Q_list_head, entry) { - j++; - if (target_el == j) { - prev_el = g_new(struct list_element, 1); - n_nodes += n_nodes_local; - QLIST_INSERT_BEFORE_RCU(el, prev_el, entry); - break; - } - } - - n_updates_local += 2; - synchronize_rcu(); - } - synchronize_rcu(); - qemu_mutex_lock(&counts_mutex); - n_nodes += n_nodes_local; - n_updates += n_updates_local; - n_nodes_removed += n_removed_local; - qemu_mutex_unlock(&counts_mutex); - return NULL; -} - -static void rcu_qtest_init(void) -{ - struct list_element *new_el; - int i; - nthreadsrunning = 0; - srand(time(0)); - for (i = 0; i < RCU_Q_LEN; i++) { - new_el = g_new(struct list_element, 1); - QLIST_INSERT_HEAD_RCU(&Q_list_head, new_el, entry); - } - qemu_mutex_lock(&counts_mutex); - n_nodes += RCU_Q_LEN; - qemu_mutex_unlock(&counts_mutex); -} - -static void rcu_qtest_run(int duration, int nreaders) -{ - int nthreads = nreaders + 1; - while (atomic_read(&nthreadsrunning) < nthreads) { - g_usleep(1000); - } - - goflag = GOFLAG_RUN; - sleep(duration); - goflag = GOFLAG_STOP; - wait_all_threads(); -} - - -static void rcu_qtest(const char *test, int duration, int nreaders) -{ - int i; - long long n_removed_local = 0; - - struct list_element *el, *prev_el; - - rcu_qtest_init(); - for (i = 0; i < nreaders; i++) { - create_thread(rcu_q_reader); - } - create_thread(rcu_q_updater); - rcu_qtest_run(duration, nreaders); - - QLIST_FOREACH_SAFE_RCU(prev_el, &Q_list_head, entry, el) { - QLIST_REMOVE_RCU(prev_el, entry); - call_rcu1(&prev_el->rcu, reclaim_list_el); - n_removed_local++; - } - qemu_mutex_lock(&counts_mutex); - n_nodes_removed += n_removed_local; - qemu_mutex_unlock(&counts_mutex); - synchronize_rcu(); - while (n_nodes_removed > n_reclaims) { - g_usleep(100); - synchronize_rcu(); - } - if (g_test_in_charge) { - g_assert_cmpint(n_nodes_removed, ==, n_reclaims); - } else { - printf("%s: %d readers; 1 updater; nodes read: " \ - "%lld, nodes removed: %lld; nodes reclaimed: %lld\n", - test, nthreadsrunning - 1, n_reads, n_nodes_removed, n_reclaims); - exit(0); - } -} - -static void usage(int argc, char *argv[]) -{ - fprintf(stderr, "Usage: %s duration nreaders\n", argv[0]); - exit(-1); -} - -static int gtest_seconds; - -static void gtest_rcuq_one(void) -{ - rcu_qtest("rcuqtest", gtest_seconds / 4, 1); -} - -static void gtest_rcuq_few(void) -{ - rcu_qtest("rcuqtest", gtest_seconds / 4, 5); -} - -static void gtest_rcuq_many(void) -{ - rcu_qtest("rcuqtest", gtest_seconds / 2, 20); -} - - -int main(int argc, char *argv[]) -{ - int duration = 0, readers = 0; - - qemu_mutex_init(&counts_mutex); - if (argc >= 2) { - if (argv[1][0] == '-') { - g_test_init(&argc, &argv, NULL); - if (g_test_quick()) { - gtest_seconds = 4; - } else { - gtest_seconds = 20; - } - g_test_add_func("/rcu/qlist/single-threaded", gtest_rcuq_one); - g_test_add_func("/rcu/qlist/short-few", gtest_rcuq_few); - g_test_add_func("/rcu/qlist/long-many", gtest_rcuq_many); - g_test_in_charge = 1; - return g_test_run(); - } - duration = strtoul(argv[1], NULL, 0); - } - if (argc >= 3) { - readers = strtoul(argv[2], NULL, 0); - } - if (duration && readers) { - rcu_qtest(argv[0], duration, readers); - return 0; - } - - usage(argc, argv); - return -1; -} -- cgit 1.2.3-korg