From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- tools/testing/radix-tree/iteration_check_2.c | 87 ++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 tools/testing/radix-tree/iteration_check_2.c (limited to 'tools/testing/radix-tree/iteration_check_2.c') diff --git a/tools/testing/radix-tree/iteration_check_2.c b/tools/testing/radix-tree/iteration_check_2.c new file mode 100644 index 000000000..aac5c50a3 --- /dev/null +++ b/tools/testing/radix-tree/iteration_check_2.c @@ -0,0 +1,87 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * iteration_check_2.c: Check that deleting a tagged entry doesn't cause + * an RCU walker to finish early. + * Copyright (c) 2020 Oracle + * Author: Matthew Wilcox + */ +#include +#include "test.h" + +static volatile bool test_complete; + +static void *iterator(void *arg) +{ + XA_STATE(xas, arg, 0); + void *entry; + + rcu_register_thread(); + + while (!test_complete) { + xas_set(&xas, 0); + rcu_read_lock(); + xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0) + ; + rcu_read_unlock(); + assert(xas.xa_index >= 100); + } + + rcu_unregister_thread(); + return NULL; +} + +static void *throbber(void *arg) +{ + struct xarray *xa = arg; + + rcu_register_thread(); + + while (!test_complete) { + int i; + + for (i = 0; i < 100; i++) { + xa_store(xa, i, xa_mk_value(i), GFP_KERNEL); + xa_set_mark(xa, i, XA_MARK_0); + } + for (i = 0; i < 100; i++) + xa_erase(xa, i); + } + + rcu_unregister_thread(); + return NULL; +} + +void iteration_test2(unsigned test_duration) +{ + pthread_t threads[2]; + DEFINE_XARRAY(array); + int i; + + printv(1, "Running iteration test 2 for %d seconds\n", test_duration); + + test_complete = false; + + xa_store(&array, 100, xa_mk_value(100), GFP_KERNEL); + xa_set_mark(&array, 100, XA_MARK_0); + + if (pthread_create(&threads[0], NULL, iterator, &array)) { + perror("create iterator thread"); + exit(1); + } + if (pthread_create(&threads[1], NULL, throbber, &array)) { + perror("create throbber thread"); + exit(1); + } + + sleep(test_duration); + test_complete = true; + + for (i = 0; i < 2; i++) { + if (pthread_join(threads[i], NULL)) { + perror("pthread_join"); + exit(1); + } + } + + xa_destroy(&array); +} -- cgit v1.2.3