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/rcutorture.c | 460 ------------------------------------------------ 1 file changed, 460 deletions(-) delete mode 100644 qemu/tests/rcutorture.c (limited to 'qemu/tests/rcutorture.c') diff --git a/qemu/tests/rcutorture.c b/qemu/tests/rcutorture.c deleted file mode 100644 index 244f0f28b..000000000 --- a/qemu/tests/rcutorture.c +++ /dev/null @@ -1,460 +0,0 @@ -/* - * rcutorture.c: simple user-level performance/stress test of RCU. - * - * Usage: - * ./rcu rperf [ ] - * Run a read-side performance test with the specified - * number of readers for seconds. - * ./rcu uperf [ ] - * Run an update-side performance test with the specified - * number of updaters and specified duration. - * ./rcu perf [ ] - * Run a combined read/update performance test with the specified - * number of readers and one updater and specified duration. - * - * The above tests produce output as follows: - * - * n_reads: 46008000 n_updates: 146026 nreaders: 2 nupdaters: 1 duration: 1 - * ns/read: 43.4707 ns/update: 6848.1 - * - * The first line lists the total number of RCU reads and updates executed - * during the test, the number of reader threads, the number of updater - * threads, and the duration of the test in seconds. The second line - * lists the average duration of each type of operation in nanoseconds, - * or "nan" if the corresponding type of operation was not performed. - * - * ./rcu stress [ ] - * Run a stress test with the specified number of readers and - * one updater. - * - * This test produces output as follows: - * - * n_reads: 114633217 n_updates: 3903415 n_mberror: 0 - * rcu_stress_count: 114618391 14826 0 0 0 0 0 0 0 0 0 - * - * The first line lists the number of RCU read and update operations - * executed, followed by the number of memory-ordering violations - * (which will be zero in a correct RCU implementation). The second - * line lists the number of readers observing progressively more stale - * data. A correct RCU implementation will have all but the first two - * numbers non-zero. - * - * 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) 2008 Paul E. McKenney, IBM Corporation. - */ - -/* - * Test variables. - */ - -#include "qemu/osdep.h" -#include -#include "qemu/atomic.h" -#include "qemu/rcu.h" -#include "qemu/thread.h" - -long long n_reads = 0LL; -long n_updates = 0L; -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 NR_THREADS 100 -static QemuMutex counts_mutex; -static QemuThread threads[NR_THREADS]; -static struct rcu_reader_data *data[NR_THREADS]; -static int n_threads; - -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; -} - -/* - * Performance test. - */ - -static void *rcu_read_perf_test(void *arg) -{ - int i; - long long n_reads_local = 0; - - rcu_register_thread(); - - *(struct rcu_reader_data **)arg = &rcu_reader; - atomic_inc(&nthreadsrunning); - while (goflag == GOFLAG_INIT) { - g_usleep(1000); - } - while (goflag == GOFLAG_RUN) { - for (i = 0; i < RCU_READ_RUN; i++) { - rcu_read_lock(); - rcu_read_unlock(); - } - n_reads_local += RCU_READ_RUN; - } - qemu_mutex_lock(&counts_mutex); - n_reads += n_reads_local; - qemu_mutex_unlock(&counts_mutex); - - rcu_unregister_thread(); - return NULL; -} - -static void *rcu_update_perf_test(void *arg) -{ - long long n_updates_local = 0; - - rcu_register_thread(); - - *(struct rcu_reader_data **)arg = &rcu_reader; - atomic_inc(&nthreadsrunning); - while (goflag == GOFLAG_INIT) { - g_usleep(1000); - } - while (goflag == GOFLAG_RUN) { - synchronize_rcu(); - n_updates_local++; - } - qemu_mutex_lock(&counts_mutex); - n_updates += n_updates_local; - qemu_mutex_unlock(&counts_mutex); - - rcu_unregister_thread(); - return NULL; -} - -static void perftestinit(void) -{ - nthreadsrunning = 0; -} - -static void perftestrun(int nthreads, int duration, int nreaders, int nupdaters) -{ - while (atomic_read(&nthreadsrunning) < nthreads) { - g_usleep(1000); - } - goflag = GOFLAG_RUN; - g_usleep(duration * G_USEC_PER_SEC); - goflag = GOFLAG_STOP; - wait_all_threads(); - printf("n_reads: %lld n_updates: %ld nreaders: %d nupdaters: %d duration: %d\n", - n_reads, n_updates, nreaders, nupdaters, duration); - printf("ns/read: %g ns/update: %g\n", - ((duration * 1000*1000*1000.*(double)nreaders) / - (double)n_reads), - ((duration * 1000*1000*1000.*(double)nupdaters) / - (double)n_updates)); - exit(0); -} - -static void perftest(int nreaders, int duration) -{ - int i; - - perftestinit(); - for (i = 0; i < nreaders; i++) { - create_thread(rcu_read_perf_test); - } - create_thread(rcu_update_perf_test); - perftestrun(i + 1, duration, nreaders, 1); -} - -static void rperftest(int nreaders, int duration) -{ - int i; - - perftestinit(); - for (i = 0; i < nreaders; i++) { - create_thread(rcu_read_perf_test); - } - perftestrun(i, duration, nreaders, 0); -} - -static void uperftest(int nupdaters, int duration) -{ - int i; - - perftestinit(); - for (i = 0; i < nupdaters; i++) { - create_thread(rcu_update_perf_test); - } - perftestrun(i, duration, 0, nupdaters); -} - -/* - * Stress test. - */ - -#define RCU_STRESS_PIPE_LEN 10 - -struct rcu_stress { - int pipe_count; - int mbtest; -}; - -struct rcu_stress rcu_stress_array[RCU_STRESS_PIPE_LEN] = { { 0 } }; -struct rcu_stress *rcu_stress_current; -int rcu_stress_idx; - -int n_mberror; -long long rcu_stress_count[RCU_STRESS_PIPE_LEN + 1]; - - -static void *rcu_read_stress_test(void *arg) -{ - int i; - int itercnt = 0; - struct rcu_stress *p; - int pc; - long long n_reads_local = 0; - long long rcu_stress_local[RCU_STRESS_PIPE_LEN + 1] = { 0 }; - volatile int garbage = 0; - - rcu_register_thread(); - - *(struct rcu_reader_data **)arg = &rcu_reader; - while (goflag == GOFLAG_INIT) { - g_usleep(1000); - } - while (goflag == GOFLAG_RUN) { - rcu_read_lock(); - p = atomic_rcu_read(&rcu_stress_current); - if (p->mbtest == 0) { - n_mberror++; - } - rcu_read_lock(); - for (i = 0; i < 100; i++) { - garbage++; - } - rcu_read_unlock(); - pc = p->pipe_count; - rcu_read_unlock(); - if ((pc > RCU_STRESS_PIPE_LEN) || (pc < 0)) { - pc = RCU_STRESS_PIPE_LEN; - } - rcu_stress_local[pc]++; - n_reads_local++; - if ((++itercnt % 0x1000) == 0) { - synchronize_rcu(); - } - } - qemu_mutex_lock(&counts_mutex); - n_reads += n_reads_local; - for (i = 0; i <= RCU_STRESS_PIPE_LEN; i++) { - rcu_stress_count[i] += rcu_stress_local[i]; - } - qemu_mutex_unlock(&counts_mutex); - - rcu_unregister_thread(); - return NULL; -} - -static void *rcu_update_stress_test(void *arg) -{ - int i; - struct rcu_stress *p; - - rcu_register_thread(); - - *(struct rcu_reader_data **)arg = &rcu_reader; - while (goflag == GOFLAG_INIT) { - g_usleep(1000); - } - while (goflag == GOFLAG_RUN) { - i = rcu_stress_idx + 1; - if (i >= RCU_STRESS_PIPE_LEN) { - i = 0; - } - p = &rcu_stress_array[i]; - p->mbtest = 0; - smp_mb(); - p->pipe_count = 0; - p->mbtest = 1; - atomic_rcu_set(&rcu_stress_current, p); - rcu_stress_idx = i; - for (i = 0; i < RCU_STRESS_PIPE_LEN; i++) { - if (i != rcu_stress_idx) { - rcu_stress_array[i].pipe_count++; - } - } - synchronize_rcu(); - n_updates++; - } - - rcu_unregister_thread(); - return NULL; -} - -static void *rcu_fake_update_stress_test(void *arg) -{ - rcu_register_thread(); - - *(struct rcu_reader_data **)arg = &rcu_reader; - while (goflag == GOFLAG_INIT) { - g_usleep(1000); - } - while (goflag == GOFLAG_RUN) { - synchronize_rcu(); - g_usleep(1000); - } - - rcu_unregister_thread(); - return NULL; -} - -static void stresstest(int nreaders, int duration) -{ - int i; - - rcu_stress_current = &rcu_stress_array[0]; - rcu_stress_current->pipe_count = 0; - rcu_stress_current->mbtest = 1; - for (i = 0; i < nreaders; i++) { - create_thread(rcu_read_stress_test); - } - create_thread(rcu_update_stress_test); - for (i = 0; i < 5; i++) { - create_thread(rcu_fake_update_stress_test); - } - goflag = GOFLAG_RUN; - g_usleep(duration * G_USEC_PER_SEC); - goflag = GOFLAG_STOP; - wait_all_threads(); - printf("n_reads: %lld n_updates: %ld n_mberror: %d\n", - n_reads, n_updates, n_mberror); - printf("rcu_stress_count:"); - for (i = 0; i <= RCU_STRESS_PIPE_LEN; i++) { - printf(" %lld", rcu_stress_count[i]); - } - printf("\n"); - exit(0); -} - -/* GTest interface */ - -static void gtest_stress(int nreaders, int duration) -{ - int i; - - rcu_stress_current = &rcu_stress_array[0]; - rcu_stress_current->pipe_count = 0; - rcu_stress_current->mbtest = 1; - for (i = 0; i < nreaders; i++) { - create_thread(rcu_read_stress_test); - } - create_thread(rcu_update_stress_test); - for (i = 0; i < 5; i++) { - create_thread(rcu_fake_update_stress_test); - } - goflag = GOFLAG_RUN; - g_usleep(duration * G_USEC_PER_SEC); - goflag = GOFLAG_STOP; - wait_all_threads(); - g_assert_cmpint(n_mberror, ==, 0); - for (i = 2; i <= RCU_STRESS_PIPE_LEN; i++) { - g_assert_cmpint(rcu_stress_count[i], ==, 0); - } -} - -static void gtest_stress_1_1(void) -{ - gtest_stress(1, 1); -} - -static void gtest_stress_10_1(void) -{ - gtest_stress(10, 1); -} - -static void gtest_stress_1_5(void) -{ - gtest_stress(1, 5); -} - -static void gtest_stress_10_5(void) -{ - gtest_stress(10, 5); -} - -/* - * Mainprogram. - */ - -static void usage(int argc, char *argv[]) -{ - fprintf(stderr, "Usage: %s [nreaders [ perf | stress ] ]\n", argv[0]); - exit(-1); -} - -int main(int argc, char *argv[]) -{ - int nreaders = 1; - int duration = 1; - - qemu_mutex_init(&counts_mutex); - if (argc >= 2 && argv[1][0] == '-') { - g_test_init(&argc, &argv, NULL); - if (g_test_quick()) { - g_test_add_func("/rcu/torture/1reader", gtest_stress_1_1); - g_test_add_func("/rcu/torture/10readers", gtest_stress_10_1); - } else { - g_test_add_func("/rcu/torture/1reader", gtest_stress_1_5); - g_test_add_func("/rcu/torture/10readers", gtest_stress_10_5); - } - return g_test_run(); - } - - if (argc >= 2) { - nreaders = strtoul(argv[1], NULL, 0); - } - if (argc > 3) { - duration = strtoul(argv[3], NULL, 0); - } - if (argc < 3 || strcmp(argv[2], "stress") == 0) { - stresstest(nreaders, duration); - } else if (strcmp(argv[2], "rperf") == 0) { - rperftest(nreaders, duration); - } else if (strcmp(argv[2], "uperf") == 0) { - uperftest(nreaders, duration); - } else if (strcmp(argv[2], "perf") == 0) { - perftest(nreaders, duration); - } - usage(argc, argv); - return 0; -} -- cgit 1.2.3-korg