Orange Pi5 kernel

Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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// SPDX-License-Identifier: GPL-2.0-only
/*
* idr-test.c: Test the IDR API
* Copyright (c) 2016 Matthew Wilcox <willy@infradead.org>
*/
#include <linux/bitmap.h>
#include <linux/idr.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include "test.h"
#define DUMMY_PTR ((void *)0x10)
int item_idr_free(int id, void *p, void *data)
{
<------>struct item *item = p;
<------>assert(item->index == id);
<------>free(p);
<------>return 0;
}
void item_idr_remove(struct idr *idr, int id)
{
<------>struct item *item = idr_find(idr, id);
<------>assert(item->index == id);
<------>idr_remove(idr, id);
<------>free(item);
}
void idr_alloc_test(void)
{
<------>unsigned long i;
<------>DEFINE_IDR(idr);
<------>assert(idr_alloc_cyclic(&idr, DUMMY_PTR, 0, 0x4000, GFP_KERNEL) == 0);
<------>assert(idr_alloc_cyclic(&idr, DUMMY_PTR, 0x3ffd, 0x4000, GFP_KERNEL) == 0x3ffd);
<------>idr_remove(&idr, 0x3ffd);
<------>idr_remove(&idr, 0);
<------>for (i = 0x3ffe; i < 0x4003; i++) {
<------><------>int id;
<------><------>struct item *item;
<------><------>if (i < 0x4000)
<------><------><------>item = item_create(i, 0);
<------><------>else
<------><------><------>item = item_create(i - 0x3fff, 0);
<------><------>id = idr_alloc_cyclic(&idr, item, 1, 0x4000, GFP_KERNEL);
<------><------>assert(id == item->index);
<------>}
<------>idr_for_each(&idr, item_idr_free, &idr);
<------>idr_destroy(&idr);
}
void idr_replace_test(void)
{
<------>DEFINE_IDR(idr);
<------>idr_alloc(&idr, (void *)-1, 10, 11, GFP_KERNEL);
<------>idr_replace(&idr, &idr, 10);
<------>idr_destroy(&idr);
}
/*
* Unlike the radix tree, you can put a NULL pointer -- with care -- into
* the IDR. Some interfaces, like idr_find() do not distinguish between
* "present, value is NULL" and "not present", but that's exactly what some
* users want.
*/
void idr_null_test(void)
{
<------>int i;
<------>DEFINE_IDR(idr);
<------>assert(idr_is_empty(&idr));
<------>assert(idr_alloc(&idr, NULL, 0, 0, GFP_KERNEL) == 0);
<------>assert(!idr_is_empty(&idr));
<------>idr_remove(&idr, 0);
<------>assert(idr_is_empty(&idr));
<------>assert(idr_alloc(&idr, NULL, 0, 0, GFP_KERNEL) == 0);
<------>assert(!idr_is_empty(&idr));
<------>idr_destroy(&idr);
<------>assert(idr_is_empty(&idr));
<------>for (i = 0; i < 10; i++) {
<------><------>assert(idr_alloc(&idr, NULL, 0, 0, GFP_KERNEL) == i);
<------>}
<------>assert(idr_replace(&idr, DUMMY_PTR, 3) == NULL);
<------>assert(idr_replace(&idr, DUMMY_PTR, 4) == NULL);
<------>assert(idr_replace(&idr, NULL, 4) == DUMMY_PTR);
<------>assert(idr_replace(&idr, DUMMY_PTR, 11) == ERR_PTR(-ENOENT));
<------>idr_remove(&idr, 5);
<------>assert(idr_alloc(&idr, NULL, 0, 0, GFP_KERNEL) == 5);
<------>idr_remove(&idr, 5);
<------>for (i = 0; i < 9; i++) {
<------><------>idr_remove(&idr, i);
<------><------>assert(!idr_is_empty(&idr));
<------>}
<------>idr_remove(&idr, 8);
<------>assert(!idr_is_empty(&idr));
<------>idr_remove(&idr, 9);
<------>assert(idr_is_empty(&idr));
<------>assert(idr_alloc(&idr, NULL, 0, 0, GFP_KERNEL) == 0);
<------>assert(idr_replace(&idr, DUMMY_PTR, 3) == ERR_PTR(-ENOENT));
<------>assert(idr_replace(&idr, DUMMY_PTR, 0) == NULL);
<------>assert(idr_replace(&idr, NULL, 0) == DUMMY_PTR);
<------>idr_destroy(&idr);
<------>assert(idr_is_empty(&idr));
<------>for (i = 1; i < 10; i++) {
<------><------>assert(idr_alloc(&idr, NULL, 1, 0, GFP_KERNEL) == i);
<------>}
<------>idr_destroy(&idr);
<------>assert(idr_is_empty(&idr));
}
void idr_nowait_test(void)
{
<------>unsigned int i;
<------>DEFINE_IDR(idr);
<------>idr_preload(GFP_KERNEL);
<------>for (i = 0; i < 3; i++) {
<------><------>struct item *item = item_create(i, 0);
<------><------>assert(idr_alloc(&idr, item, i, i + 1, GFP_NOWAIT) == i);
<------>}
<------>idr_preload_end();
<------>idr_for_each(&idr, item_idr_free, &idr);
<------>idr_destroy(&idr);
}
void idr_get_next_test(int base)
{
<------>unsigned long i;
<------>int nextid;
<------>DEFINE_IDR(idr);
<------>idr_init_base(&idr, base);
<------>int indices[] = {4, 7, 9, 15, 65, 128, 1000, 99999, 0};
<------>for(i = 0; indices[i]; i++) {
<------><------>struct item *item = item_create(indices[i], 0);
<------><------>assert(idr_alloc(&idr, item, indices[i], indices[i+1],
<------><------><------><------> GFP_KERNEL) == indices[i]);
<------>}
<------>for(i = 0, nextid = 0; indices[i]; i++) {
<------><------>idr_get_next(&idr, &nextid);
<------><------>assert(nextid == indices[i]);
<------><------>nextid++;
<------>}
<------>idr_for_each(&idr, item_idr_free, &idr);
<------>idr_destroy(&idr);
}
int idr_u32_cb(int id, void *ptr, void *data)
{
<------>BUG_ON(id < 0);
<------>BUG_ON(ptr != DUMMY_PTR);
<------>return 0;
}
void idr_u32_test1(struct idr *idr, u32 handle)
{
<------>static bool warned = false;
<------>u32 id = handle;
<------>int sid = 0;
<------>void *ptr;
<------>BUG_ON(idr_alloc_u32(idr, DUMMY_PTR, &id, id, GFP_KERNEL));
<------>BUG_ON(id != handle);
<------>BUG_ON(idr_alloc_u32(idr, DUMMY_PTR, &id, id, GFP_KERNEL) != -ENOSPC);
<------>BUG_ON(id != handle);
<------>if (!warned && id > INT_MAX)
<------><------>printk("vvv Ignore these warnings\n");
<------>ptr = idr_get_next(idr, &sid);
<------>if (id > INT_MAX) {
<------><------>BUG_ON(ptr != NULL);
<------><------>BUG_ON(sid != 0);
<------>} else {
<------><------>BUG_ON(ptr != DUMMY_PTR);
<------><------>BUG_ON(sid != id);
<------>}
<------>idr_for_each(idr, idr_u32_cb, NULL);
<------>if (!warned && id > INT_MAX) {
<------><------>printk("^^^ Warnings over\n");
<------><------>warned = true;
<------>}
<------>BUG_ON(idr_remove(idr, id) != DUMMY_PTR);
<------>BUG_ON(!idr_is_empty(idr));
}
void idr_u32_test(int base)
{
<------>DEFINE_IDR(idr);
<------>idr_init_base(&idr, base);
<------>idr_u32_test1(&idr, 10);
<------>idr_u32_test1(&idr, 0x7fffffff);
<------>idr_u32_test1(&idr, 0x80000000);
<------>idr_u32_test1(&idr, 0x80000001);
<------>idr_u32_test1(&idr, 0xffe00000);
<------>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);
<------>BUG_ON(idr_alloc(&find_idr, xa_mk_value(anchor_id), anchor_id,
<------><------><------><------>anchor_id + 1, GFP_KERNEL) != anchor_id);
<------>pthread_create(&throbber, NULL, idr_throbber, &throbber_id);
<------>rcu_read_lock();
<------>do {
<------><------>int id = 0;
<------><------>void *entry = idr_get_next(&find_idr, &id);
<------><------>rcu_read_unlock();
<------><------>BUG_ON(entry != xa_mk_value(id));
<------><------>rcu_read_lock();
<------>} while (time(NULL) < start + 11);
<------>rcu_read_unlock();
<------>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;
<------>DEFINE_IDR(idr);
<------>for (i = 0; i < 10000; i++) {
<------><------>struct item *item = item_create(i, 0);
<------><------>assert(idr_alloc(&idr, item, 0, 20000, GFP_KERNEL) == i);
<------>}
<------>assert(idr_alloc(&idr, DUMMY_PTR, 5, 30, GFP_KERNEL) < 0);
<------>for (i = 0; i < 5000; i++)
<------><------>item_idr_remove(&idr, i);
<------>idr_remove(&idr, 3);
<------>idr_for_each(&idr, item_idr_free, &idr);
<------>idr_destroy(&idr);
<------>assert(idr_is_empty(&idr));
<------>idr_remove(&idr, 3);
<------>idr_remove(&idr, 0);
<------>assert(idr_alloc(&idr, DUMMY_PTR, 0, 0, GFP_KERNEL) == 0);
<------>idr_remove(&idr, 1);
<------>for (i = 1; i < RADIX_TREE_MAP_SIZE; i++)
<------><------>assert(idr_alloc(&idr, DUMMY_PTR, 0, 0, GFP_KERNEL) == i);
<------>idr_remove(&idr, 1 << 30);
<------>idr_destroy(&idr);
<------>for (i = INT_MAX - 3UL; i < INT_MAX + 1UL; i++) {
<------><------>struct item *item = item_create(i, 0);
<------><------>assert(idr_alloc(&idr, item, i, i + 10, GFP_KERNEL) == i);
<------>}
<------>assert(idr_alloc(&idr, DUMMY_PTR, i - 2, i, GFP_KERNEL) == -ENOSPC);
<------>assert(idr_alloc(&idr, DUMMY_PTR, i - 2, i + 10, GFP_KERNEL) == -ENOSPC);
<------>idr_for_each(&idr, item_idr_free, &idr);
<------>idr_destroy(&idr);
<------>idr_destroy(&idr);
<------>assert(idr_is_empty(&idr));
<------>idr_set_cursor(&idr, INT_MAX - 3UL);
<------>for (i = INT_MAX - 3UL; i < INT_MAX + 3UL; i++) {
<------><------>struct item *item;
<------><------>unsigned int id;
<------><------>if (i <= INT_MAX)
<------><------><------>item = item_create(i, 0);
<------><------>else
<------><------><------>item = item_create(i - INT_MAX - 1, 0);
<------><------>id = idr_alloc_cyclic(&idr, item, 0, 0, GFP_KERNEL);
<------><------>assert(id == item->index);
<------>}
<------>idr_for_each(&idr, item_idr_free, &idr);
<------>idr_destroy(&idr);
<------>assert(idr_is_empty(&idr));
<------>for (i = 1; i < 10000; i++) {
<------><------>struct item *item = item_create(i, 0);
<------><------>assert(idr_alloc(&idr, item, 1, 20000, GFP_KERNEL) == i);
<------>}
<------>idr_for_each(&idr, item_idr_free, &idr);
<------>idr_destroy(&idr);
<------>idr_replace_test();
<------>idr_alloc_test();
<------>idr_null_test();
<------>idr_nowait_test();
<------>idr_get_next_test(0);
<------>idr_get_next_test(1);
<------>idr_get_next_test(4);
<------>idr_u32_test(4);
<------>idr_u32_test(1);
<------>idr_u32_test(0);
<------>idr_align_test(&idr);
<------>idr_find_test();
}
#define module_init(x)
#define module_exit(x)
#define MODULE_AUTHOR(x)
#define MODULE_LICENSE(x)
#define dump_stack() assert(0)
void ida_dump(struct ida *);
#include "../../../lib/test_ida.c"
/*
* Check that we get the correct error when we run out of memory doing
* allocations. In userspace, GFP_NOWAIT will always fail an allocation.
* The first test is for not having a bitmap available, and the second test
* is for not being able to allocate a level of the radix tree.
*/
void ida_check_nomem(void)
{
<------>DEFINE_IDA(ida);
<------>int id;
<------>id = ida_alloc_min(&ida, 256, GFP_NOWAIT);
<------>IDA_BUG_ON(&ida, id != -ENOMEM);
<------>id = ida_alloc_min(&ida, 1UL << 30, GFP_NOWAIT);
<------>IDA_BUG_ON(&ida, id != -ENOMEM);
<------>IDA_BUG_ON(&ida, !ida_is_empty(&ida));
}
/*
* Check handling of conversions between exceptional entries and full bitmaps.
*/
void ida_check_conv_user(void)
{
<------>DEFINE_IDA(ida);
<------>unsigned long i;
<------>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_XA_VALUE) &&
<------><------><------><------><------> ((i % IDA_BITMAP_BITS) != 0));
<------><------><------>id = ida_alloc(&ida, GFP_KERNEL);
<------><------>} else {
<------><------><------>IDA_BUG_ON(&ida, (i % IDA_BITMAP_BITS) ==
<------><------><------><------><------>BITS_PER_XA_VALUE);
<------><------>}
<------><------>IDA_BUG_ON(&ida, id != i);
<------>}
<------>ida_destroy(&ida);
}
void ida_check_random(void)
{
<------>DEFINE_IDA(ida);
<------>DECLARE_BITMAP(bitmap, 2048);
<------>unsigned int i;
<------>time_t s = time(NULL);
repeat:
<------>memset(bitmap, 0, sizeof(bitmap));
<------>for (i = 0; i < 100000; i++) {
<------><------>int i = rand();
<------><------>int bit = i & 2047;
<------><------>if (test_bit(bit, bitmap)) {
<------><------><------>__clear_bit(bit, bitmap);
<------><------><------>ida_free(&ida, bit);
<------><------>} else {
<------><------><------>__set_bit(bit, bitmap);
<------><------><------>IDA_BUG_ON(&ida, ida_alloc_min(&ida, bit, GFP_KERNEL)
<------><------><------><------><------>!= bit);
<------><------>}
<------>}
<------>ida_destroy(&ida);
<------>if (time(NULL) < s + 10)
<------><------>goto repeat;
}
void ida_simple_get_remove_test(void)
{
<------>DEFINE_IDA(ida);
<------>unsigned long i;
<------>for (i = 0; i < 10000; i++) {
<------><------>assert(ida_simple_get(&ida, 0, 20000, GFP_KERNEL) == i);
<------>}
<------>assert(ida_simple_get(&ida, 5, 30, GFP_KERNEL) < 0);
<------>for (i = 0; i < 10000; i++) {
<------><------>ida_simple_remove(&ida, i);
<------>}
<------>assert(ida_is_empty(&ida));
<------>ida_destroy(&ida);
}
void user_ida_checks(void)
{
<------>radix_tree_cpu_dead(1);
<------>ida_check_nomem();
<------>ida_check_conv_user();
<------>ida_check_random();
<------>ida_simple_get_remove_test();
<------>radix_tree_cpu_dead(1);
}
static void *ida_random_fn(void *arg)
{
<------>rcu_register_thread();
<------>ida_check_random();
<------>rcu_unregister_thread();
<------>return NULL;
}
static void *ida_leak_fn(void *arg)
{
<------>struct ida *ida = arg;
<------>time_t s = time(NULL);
<------>int i, ret;
<------>rcu_register_thread();
<------>do for (i = 0; i < 1000; i++) {
<------><------>ret = ida_alloc_range(ida, 128, 128, GFP_KERNEL);
<------><------>if (ret >= 0)
<------><------><------>ida_free(ida, 128);
<------>} while (time(NULL) < s + 2);
<------>rcu_unregister_thread();
<------>return NULL;
}
void ida_thread_tests(void)
{
<------>DEFINE_IDA(ida);
<------>pthread_t threads[20];
<------>int i;
<------>for (i = 0; i < ARRAY_SIZE(threads); i++)
<------><------>if (pthread_create(&threads[i], NULL, ida_random_fn, NULL)) {
<------><------><------>perror("creating ida thread");
<------><------><------>exit(1);
<------><------>}
<------>while (i--)
<------><------>pthread_join(threads[i], NULL);
<------>for (i = 0; i < ARRAY_SIZE(threads); i++)
<------><------>if (pthread_create(&threads[i], NULL, ida_leak_fn, &ida)) {
<------><------><------>perror("creating ida thread");
<------><------><------>exit(1);
<------><------>}
<------>while (i--)
<------><------>pthread_join(threads[i], NULL);
<------>assert(ida_is_empty(&ida));
}
void ida_tests(void)
{
<------>user_ida_checks();
<------>ida_checks();
<------>ida_exit();
<------>ida_thread_tests();
}
int __weak main(void)
{
<------>rcu_register_thread();
<------>radix_tree_init();
<------>idr_checks();
<------>ida_tests();
<------>radix_tree_cpu_dead(1);
<------>rcu_barrier();
<------>if (nr_allocated)
<------><------>printf("nr_allocated = %d\n", nr_allocated);
<------>rcu_unregister_thread();
<------>return 0;
}