Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/testing/radix-tree/idr-test.c b/tools/testing/radix-tree/idr-test.c
index 321ba92..8995092 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* idr-test.c: Test the IDR API
* Copyright (c) 2016 Matthew Wilcox <willy@infradead.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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.
*/
#include <linux/bitmap.h>
#include <linux/idr.h>
@@ -19,7 +11,7 @@
#include "test.h"
-#define DUMMY_PTR ((void *)0x12)
+#define DUMMY_PTR ((void *)0x10)
int item_idr_free(int id, void *p, void *data)
{
@@ -227,6 +219,111 @@
idr_u32_test1(&idr, 0xffffffff);
}
+static void idr_align_test(struct idr *idr)
+{
+ char name[] = "Motorola 68000";
+ int i, id;
+ void *entry;
+
+ for (i = 0; i < 9; i++) {
+ BUG_ON(idr_alloc(idr, &name[i], 0, 0, GFP_KERNEL) != i);
+ idr_for_each_entry(idr, entry, id);
+ }
+ idr_destroy(idr);
+
+ for (i = 1; i < 10; i++) {
+ BUG_ON(idr_alloc(idr, &name[i], 0, 0, GFP_KERNEL) != i - 1);
+ idr_for_each_entry(idr, entry, id);
+ }
+ idr_destroy(idr);
+
+ for (i = 2; i < 11; i++) {
+ BUG_ON(idr_alloc(idr, &name[i], 0, 0, GFP_KERNEL) != i - 2);
+ idr_for_each_entry(idr, entry, id);
+ }
+ idr_destroy(idr);
+
+ for (i = 3; i < 12; i++) {
+ BUG_ON(idr_alloc(idr, &name[i], 0, 0, GFP_KERNEL) != i - 3);
+ idr_for_each_entry(idr, entry, id);
+ }
+ idr_destroy(idr);
+
+ for (i = 0; i < 8; i++) {
+ BUG_ON(idr_alloc(idr, &name[i], 0, 0, GFP_KERNEL) != 0);
+ BUG_ON(idr_alloc(idr, &name[i + 1], 0, 0, GFP_KERNEL) != 1);
+ idr_for_each_entry(idr, entry, id);
+ idr_remove(idr, 1);
+ idr_for_each_entry(idr, entry, id);
+ idr_remove(idr, 0);
+ BUG_ON(!idr_is_empty(idr));
+ }
+
+ for (i = 0; i < 8; i++) {
+ BUG_ON(idr_alloc(idr, NULL, 0, 0, GFP_KERNEL) != 0);
+ idr_for_each_entry(idr, entry, id);
+ idr_replace(idr, &name[i], 0);
+ idr_for_each_entry(idr, entry, id);
+ BUG_ON(idr_find(idr, 0) != &name[i]);
+ idr_remove(idr, 0);
+ }
+
+ for (i = 0; i < 8; i++) {
+ BUG_ON(idr_alloc(idr, &name[i], 0, 0, GFP_KERNEL) != 0);
+ BUG_ON(idr_alloc(idr, NULL, 0, 0, GFP_KERNEL) != 1);
+ idr_remove(idr, 1);
+ idr_for_each_entry(idr, entry, id);
+ idr_replace(idr, &name[i + 1], 0);
+ idr_for_each_entry(idr, entry, id);
+ idr_remove(idr, 0);
+ }
+}
+
+DEFINE_IDR(find_idr);
+
+static void *idr_throbber(void *arg)
+{
+ time_t start = time(NULL);
+ int id = *(int *)arg;
+
+ rcu_register_thread();
+ do {
+ idr_alloc(&find_idr, xa_mk_value(id), id, id + 1, GFP_KERNEL);
+ idr_remove(&find_idr, id);
+ } while (time(NULL) < start + 10);
+ rcu_unregister_thread();
+
+ return NULL;
+}
+
+void idr_find_test_1(int anchor_id, int throbber_id)
+{
+ pthread_t throbber;
+ time_t start = time(NULL);
+
+ pthread_create(&throbber, NULL, idr_throbber, &throbber_id);
+
+ BUG_ON(idr_alloc(&find_idr, xa_mk_value(anchor_id), anchor_id,
+ anchor_id + 1, GFP_KERNEL) != anchor_id);
+
+ do {
+ int id = 0;
+ void *entry = idr_get_next(&find_idr, &id);
+ BUG_ON(entry != xa_mk_value(id));
+ } while (time(NULL) < start + 11);
+
+ pthread_join(throbber, NULL);
+
+ idr_remove(&find_idr, anchor_id);
+ BUG_ON(!idr_is_empty(&find_idr));
+}
+
+void idr_find_test(void)
+{
+ idr_find_test_1(100000, 0);
+ idr_find_test_1(0, 100000);
+}
+
void idr_checks(void)
{
unsigned long i;
@@ -307,6 +404,8 @@
idr_u32_test(4);
idr_u32_test(1);
idr_u32_test(0);
+ idr_align_test(&idr);
+ idr_find_test();
}
#define module_init(x)
@@ -344,16 +443,16 @@
DEFINE_IDA(ida);
unsigned long i;
- radix_tree_cpu_dead(1);
for (i = 0; i < 1000000; i++) {
int id = ida_alloc(&ida, GFP_NOWAIT);
if (id == -ENOMEM) {
- IDA_BUG_ON(&ida, (i % IDA_BITMAP_BITS) !=
- BITS_PER_LONG - 2);
+ IDA_BUG_ON(&ida, ((i % IDA_BITMAP_BITS) !=
+ BITS_PER_XA_VALUE) &&
+ ((i % IDA_BITMAP_BITS) != 0));
id = ida_alloc(&ida, GFP_KERNEL);
} else {
IDA_BUG_ON(&ida, (i % IDA_BITMAP_BITS) ==
- BITS_PER_LONG - 2);
+ BITS_PER_XA_VALUE);
}
IDA_BUG_ON(&ida, id != i);
}