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linux-stable/lib/test_maple_tree.c
Liam R. Howlett 4bd6dded63 test_maple_tree: add more testing for mas_empty_area() 
Test robust filling of an entire area of the tree, then test one beyond. 
This is to test the walking back up the tree at the end of nodes and error
condition.  Test inspired by the reproducer code provided by Snild Dolkow.

The last test in the function tests for the case of a corrupted maple
state caused by the incorrect limits set during mas_skip_node().  There
needs to be a gap in the second last child and last child, but the search
must rule out the second last child's gap.  This would avoid correcting
the maple state to the correct max limit and return an error.

Link: https://lkml.kernel.org/r/20230307180247.2220303-3-Liam.Howlett@oracle.com
Cc: Snild Dolkow <snild@sony.com>
Link: https://lore.kernel.org/linux-mm/cb8dc31a-fef2-1d09-f133-e9f7b9f9e77a@sony.com/
Fixes: e15e06a839 ("lib/test_maple_tree: add testing for maple tree")
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-03-23 17:18:32 -07:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* test_maple_tree.c: Test the maple tree API
* Copyright (c) 2018-2022 Oracle Corporation
* Author: Liam R. Howlett <Liam.Howlett@Oracle.com>
*
* Any tests that only require the interface of the tree.
*/
#include <linux/maple_tree.h>
#include <linux/module.h>
#define MTREE_ALLOC_MAX 0x2000000000000Ul
#ifndef CONFIG_DEBUG_MAPLE_TREE
#define CONFIG_DEBUG_MAPLE_TREE
#endif
#define CONFIG_MAPLE_SEARCH
#define MAPLE_32BIT (MAPLE_NODE_SLOTS > 31)
/* #define BENCH_SLOT_STORE */
/* #define BENCH_NODE_STORE */
/* #define BENCH_AWALK */
/* #define BENCH_WALK */
/* #define BENCH_MT_FOR_EACH */
/* #define BENCH_FORK */
#ifdef __KERNEL__
#define mt_set_non_kernel(x) do {} while (0)
#define mt_zero_nr_tallocated(x) do {} while (0)
#else
#define cond_resched() do {} while (0)
#endif
static
int mtree_insert_index(struct maple_tree *mt, unsigned long index, gfp_t gfp)
{
return mtree_insert(mt, index, xa_mk_value(index & LONG_MAX), gfp);
}
static void mtree_erase_index(struct maple_tree *mt, unsigned long index)
{
MT_BUG_ON(mt, mtree_erase(mt, index) != xa_mk_value(index & LONG_MAX));
MT_BUG_ON(mt, mtree_load(mt, index) != NULL);
}
static int mtree_test_insert(struct maple_tree *mt, unsigned long index,
void *ptr)
{
return mtree_insert(mt, index, ptr, GFP_KERNEL);
}
static int mtree_test_store_range(struct maple_tree *mt, unsigned long start,
unsigned long end, void *ptr)
{
return mtree_store_range(mt, start, end, ptr, GFP_KERNEL);
}
static int mtree_test_store(struct maple_tree *mt, unsigned long start,
void *ptr)
{
return mtree_test_store_range(mt, start, start, ptr);
}
static int mtree_test_insert_range(struct maple_tree *mt, unsigned long start,
unsigned long end, void *ptr)
{
return mtree_insert_range(mt, start, end, ptr, GFP_KERNEL);
}
static void *mtree_test_load(struct maple_tree *mt, unsigned long index)
{
return mtree_load(mt, index);
}
static void *mtree_test_erase(struct maple_tree *mt, unsigned long index)
{
return mtree_erase(mt, index);
}
#if defined(CONFIG_64BIT)
static noinline void check_mtree_alloc_range(struct maple_tree *mt,
unsigned long start, unsigned long end, unsigned long size,
unsigned long expected, int eret, void *ptr)
{
unsigned long result = expected + 1;
int ret;
ret = mtree_alloc_range(mt, &result, ptr, size, start, end,
GFP_KERNEL);
MT_BUG_ON(mt, ret != eret);
if (ret)
return;
MT_BUG_ON(mt, result != expected);
}
static noinline void check_mtree_alloc_rrange(struct maple_tree *mt,
unsigned long start, unsigned long end, unsigned long size,
unsigned long expected, int eret, void *ptr)
{
unsigned long result = expected + 1;
int ret;
ret = mtree_alloc_rrange(mt, &result, ptr, size, start, end - 1,
GFP_KERNEL);
MT_BUG_ON(mt, ret != eret);
if (ret)
return;
MT_BUG_ON(mt, result != expected);
}
#endif
static noinline void check_load(struct maple_tree *mt, unsigned long index,
void *ptr)
{
void *ret = mtree_test_load(mt, index);
if (ret != ptr)
pr_err("Load %lu returned %p expect %p\n", index, ret, ptr);
MT_BUG_ON(mt, ret != ptr);
}
static noinline void check_store_range(struct maple_tree *mt,
unsigned long start, unsigned long end, void *ptr, int expected)
{
int ret = -EINVAL;
unsigned long i;
ret = mtree_test_store_range(mt, start, end, ptr);
MT_BUG_ON(mt, ret != expected);
if (ret)
return;
for (i = start; i <= end; i++)
check_load(mt, i, ptr);
}
static noinline void check_insert_range(struct maple_tree *mt,
unsigned long start, unsigned long end, void *ptr, int expected)
{
int ret = -EINVAL;
unsigned long i;
ret = mtree_test_insert_range(mt, start, end, ptr);
MT_BUG_ON(mt, ret != expected);
if (ret)
return;
for (i = start; i <= end; i++)
check_load(mt, i, ptr);
}
static noinline void check_insert(struct maple_tree *mt, unsigned long index,
void *ptr)
{
int ret = -EINVAL;
ret = mtree_test_insert(mt, index, ptr);
MT_BUG_ON(mt, ret != 0);
}
static noinline void check_dup_insert(struct maple_tree *mt,
unsigned long index, void *ptr)
{
int ret = -EINVAL;
ret = mtree_test_insert(mt, index, ptr);
MT_BUG_ON(mt, ret != -EEXIST);
}
static noinline
void check_index_load(struct maple_tree *mt, unsigned long index)
{
return check_load(mt, index, xa_mk_value(index & LONG_MAX));
}
static inline int not_empty(struct maple_node *node)
{
int i;
if (node->parent)
return 1;
for (i = 0; i < ARRAY_SIZE(node->slot); i++)
if (node->slot[i])
return 1;
return 0;
}
static noinline void check_rev_seq(struct maple_tree *mt, unsigned long max,
bool verbose)
{
unsigned long i = max, j;
MT_BUG_ON(mt, !mtree_empty(mt));
mt_zero_nr_tallocated();
while (i) {
MT_BUG_ON(mt, mtree_insert_index(mt, i, GFP_KERNEL));
for (j = i; j <= max; j++)
check_index_load(mt, j);
check_load(mt, i - 1, NULL);
mt_set_in_rcu(mt);
MT_BUG_ON(mt, !mt_height(mt));
mt_clear_in_rcu(mt);
MT_BUG_ON(mt, !mt_height(mt));
i--;
}
check_load(mt, max + 1, NULL);
#ifndef __KERNEL__
if (verbose) {
rcu_barrier();
mt_dump(mt);
pr_info(" %s test of 0-%lu %luK in %d active (%d total)\n",
__func__, max, mt_get_alloc_size()/1024, mt_nr_allocated(),
mt_nr_tallocated());
}
#endif
}
static noinline void check_seq(struct maple_tree *mt, unsigned long max,
bool verbose)
{
unsigned long i, j;
MT_BUG_ON(mt, !mtree_empty(mt));
mt_zero_nr_tallocated();
for (i = 0; i <= max; i++) {
MT_BUG_ON(mt, mtree_insert_index(mt, i, GFP_KERNEL));
for (j = 0; j <= i; j++)
check_index_load(mt, j);
if (i)
MT_BUG_ON(mt, !mt_height(mt));
check_load(mt, i + 1, NULL);
}
#ifndef __KERNEL__
if (verbose) {
rcu_barrier();
mt_dump(mt);
pr_info(" seq test of 0-%lu %luK in %d active (%d total)\n",
max, mt_get_alloc_size()/1024, mt_nr_allocated(),
mt_nr_tallocated());
}
#endif
}
static noinline void check_lb_not_empty(struct maple_tree *mt)
{
unsigned long i, j;
unsigned long huge = 4000UL * 1000 * 1000;
i = huge;
while (i > 4096) {
check_insert(mt, i, (void *) i);
for (j = huge; j >= i; j /= 2) {
check_load(mt, j-1, NULL);
check_load(mt, j, (void *) j);
check_load(mt, j+1, NULL);
}
i /= 2;
}
mtree_destroy(mt);
}
static noinline void check_lower_bound_split(struct maple_tree *mt)
{
MT_BUG_ON(mt, !mtree_empty(mt));
check_lb_not_empty(mt);
}
static noinline void check_upper_bound_split(struct maple_tree *mt)
{
unsigned long i, j;
unsigned long huge;
MT_BUG_ON(mt, !mtree_empty(mt));
if (MAPLE_32BIT)
huge = 2147483647UL;
else
huge = 4000UL * 1000 * 1000;
i = 4096;
while (i < huge) {
check_insert(mt, i, (void *) i);
for (j = i; j >= huge; j *= 2) {
check_load(mt, j-1, NULL);
check_load(mt, j, (void *) j);
check_load(mt, j+1, NULL);
}
i *= 2;
}
mtree_destroy(mt);
}
static noinline void check_mid_split(struct maple_tree *mt)
{
unsigned long huge = 8000UL * 1000 * 1000;
check_insert(mt, huge, (void *) huge);
check_insert(mt, 0, xa_mk_value(0));
check_lb_not_empty(mt);
}
static noinline void check_rev_find(struct maple_tree *mt)
{
int i, nr_entries = 200;
void *val;
MA_STATE(mas, mt, 0, 0);
for (i = 0; i <= nr_entries; i++)
mtree_store_range(mt, i*10, i*10 + 5,
xa_mk_value(i), GFP_KERNEL);
rcu_read_lock();
mas_set(&mas, 1000);
val = mas_find_rev(&mas, 1000);
MT_BUG_ON(mt, val != xa_mk_value(100));
val = mas_find_rev(&mas, 1000);
MT_BUG_ON(mt, val != NULL);
mas_set(&mas, 999);
val = mas_find_rev(&mas, 997);
MT_BUG_ON(mt, val != NULL);
mas_set(&mas, 1000);
val = mas_find_rev(&mas, 900);
MT_BUG_ON(mt, val != xa_mk_value(100));
val = mas_find_rev(&mas, 900);
MT_BUG_ON(mt, val != xa_mk_value(99));
mas_set(&mas, 20);
val = mas_find_rev(&mas, 0);
MT_BUG_ON(mt, val != xa_mk_value(2));
val = mas_find_rev(&mas, 0);
MT_BUG_ON(mt, val != xa_mk_value(1));
val = mas_find_rev(&mas, 0);
MT_BUG_ON(mt, val != xa_mk_value(0));
val = mas_find_rev(&mas, 0);
MT_BUG_ON(mt, val != NULL);
rcu_read_unlock();
}
static noinline void check_find(struct maple_tree *mt)
{
unsigned long val = 0;
unsigned long count;
unsigned long max;
unsigned long top;
unsigned long last = 0, index = 0;
void *entry, *entry2;
MA_STATE(mas, mt, 0, 0);
/* Insert 0. */
MT_BUG_ON(mt, mtree_insert_index(mt, val++, GFP_KERNEL));
#if defined(CONFIG_64BIT)
top = 4398046511104UL;
#else
top = ULONG_MAX;
#endif
if (MAPLE_32BIT) {
count = 15;
} else {
count = 20;
}
for (int i = 0; i <= count; i++) {
if (val != 64)
MT_BUG_ON(mt, mtree_insert_index(mt, val, GFP_KERNEL));
else
MT_BUG_ON(mt, mtree_insert(mt, val,
XA_ZERO_ENTRY, GFP_KERNEL));
val <<= 2;
}
val = 0;
mas_set(&mas, val);
mas_lock(&mas);
while ((entry = mas_find(&mas, 268435456)) != NULL) {
if (val != 64)
MT_BUG_ON(mt, xa_mk_value(val) != entry);
else
MT_BUG_ON(mt, entry != XA_ZERO_ENTRY);
val <<= 2;
/* For zero check. */
if (!val)
val = 1;
}
mas_unlock(&mas);
val = 0;
mas_set(&mas, val);
mas_lock(&mas);
mas_for_each(&mas, entry, ULONG_MAX) {
if (val != 64)
MT_BUG_ON(mt, xa_mk_value(val) != entry);
else
MT_BUG_ON(mt, entry != XA_ZERO_ENTRY);
val <<= 2;
/* For zero check. */
if (!val)
val = 1;
}
mas_unlock(&mas);
/* Test mas_pause */
val = 0;
mas_set(&mas, val);
mas_lock(&mas);
mas_for_each(&mas, entry, ULONG_MAX) {
if (val != 64)
MT_BUG_ON(mt, xa_mk_value(val) != entry);
else
MT_BUG_ON(mt, entry != XA_ZERO_ENTRY);
val <<= 2;
/* For zero check. */
if (!val)
val = 1;
mas_pause(&mas);
mas_unlock(&mas);
mas_lock(&mas);
}
mas_unlock(&mas);
val = 0;
max = 300; /* A value big enough to include XA_ZERO_ENTRY at 64. */
mt_for_each(mt, entry, index, max) {
MT_BUG_ON(mt, xa_mk_value(val) != entry);
val <<= 2;
if (val == 64) /* Skip zero entry. */
val <<= 2;
/* For zero check. */
if (!val)
val = 1;
}
val = 0;
max = 0;
index = 0;
MT_BUG_ON(mt, mtree_insert_index(mt, ULONG_MAX, GFP_KERNEL));
mt_for_each(mt, entry, index, ULONG_MAX) {
if (val == top)
MT_BUG_ON(mt, entry != xa_mk_value(LONG_MAX));
else
MT_BUG_ON(mt, xa_mk_value(val) != entry);
/* Workaround for 32bit */
if ((val << 2) < val)
val = ULONG_MAX;
else
val <<= 2;
if (val == 64) /* Skip zero entry. */
val <<= 2;
/* For zero check. */
if (!val)
val = 1;
max++;
MT_BUG_ON(mt, max > 25);
}
mtree_erase_index(mt, ULONG_MAX);
mas_reset(&mas);
index = 17;
entry = mt_find(mt, &index, 512);
MT_BUG_ON(mt, xa_mk_value(256) != entry);
mas_reset(&mas);
index = 17;
entry = mt_find(mt, &index, 20);
MT_BUG_ON(mt, entry != NULL);
/* Range check.. */
/* Insert ULONG_MAX */
MT_BUG_ON(mt, mtree_insert_index(mt, ULONG_MAX, GFP_KERNEL));
val = 0;
mas_set(&mas, 0);
mas_lock(&mas);
mas_for_each(&mas, entry, ULONG_MAX) {
if (val == 64)
MT_BUG_ON(mt, entry != XA_ZERO_ENTRY);
else if (val == top)
MT_BUG_ON(mt, entry != xa_mk_value(LONG_MAX));
else
MT_BUG_ON(mt, xa_mk_value(val) != entry);
/* Workaround for 32bit */
if ((val << 2) < val)
val = ULONG_MAX;
else
val <<= 2;
/* For zero check. */
if (!val)
val = 1;
mas_pause(&mas);
mas_unlock(&mas);
mas_lock(&mas);
}
mas_unlock(&mas);
mas_set(&mas, 1048576);
mas_lock(&mas);
entry = mas_find(&mas, 1048576);
mas_unlock(&mas);
MT_BUG_ON(mas.tree, entry == NULL);
/*
* Find last value.
* 1. get the expected value, leveraging the existence of an end entry
* 2. delete end entry
* 3. find the last value but searching for ULONG_MAX and then using
* prev
*/
/* First, get the expected result. */
mas_lock(&mas);
mas_reset(&mas);
mas.index = ULONG_MAX; /* start at max.. */
entry = mas_find(&mas, ULONG_MAX);
entry = mas_prev(&mas, 0);
index = mas.index;
last = mas.last;
/* Erase the last entry. */
mas_reset(&mas);
mas.index = ULONG_MAX;
mas.last = ULONG_MAX;
mas_erase(&mas);
/* Get the previous value from MAS_START */
mas_reset(&mas);
entry2 = mas_prev(&mas, 0);
/* Check results. */
MT_BUG_ON(mt, entry != entry2);
MT_BUG_ON(mt, index != mas.index);
MT_BUG_ON(mt, last != mas.last);
mas.node = MAS_NONE;
mas.index = ULONG_MAX;
mas.last = ULONG_MAX;
entry2 = mas_prev(&mas, 0);
MT_BUG_ON(mt, entry != entry2);
mas_set(&mas, 0);
MT_BUG_ON(mt, mas_prev(&mas, 0) != NULL);
mas_unlock(&mas);
mtree_destroy(mt);
}
static noinline void check_find_2(struct maple_tree *mt)
{
unsigned long i, j;
void *entry;
MA_STATE(mas, mt, 0, 0);
rcu_read_lock();
mas_for_each(&mas, entry, ULONG_MAX)
MT_BUG_ON(mt, true);
rcu_read_unlock();
for (i = 0; i < 256; i++) {
mtree_insert_index(mt, i, GFP_KERNEL);
j = 0;
mas_set(&mas, 0);
rcu_read_lock();
mas_for_each(&mas, entry, ULONG_MAX) {
MT_BUG_ON(mt, entry != xa_mk_value(j));
j++;
}
rcu_read_unlock();
MT_BUG_ON(mt, j != i + 1);
}
for (i = 0; i < 256; i++) {
mtree_erase_index(mt, i);
j = i + 1;
mas_set(&mas, 0);
rcu_read_lock();
mas_for_each(&mas, entry, ULONG_MAX) {
if (xa_is_zero(entry))
continue;
MT_BUG_ON(mt, entry != xa_mk_value(j));
j++;
}
rcu_read_unlock();
MT_BUG_ON(mt, j != 256);
}
/*MT_BUG_ON(mt, !mtree_empty(mt)); */
}
#if defined(CONFIG_64BIT)
static noinline void check_alloc_rev_range(struct maple_tree *mt)
{
/*
* Generated by:
* cat /proc/self/maps | awk '{print $1}'|
* awk -F "-" '{printf "0x%s, 0x%s, ", $1, $2}'
*/
unsigned long range[] = {
/* Inclusive , Exclusive. */
0x565234af2000, 0x565234af4000,
0x565234af4000, 0x565234af9000,
0x565234af9000, 0x565234afb000,
0x565234afc000, 0x565234afd000,
0x565234afd000, 0x565234afe000,
0x565235def000, 0x565235e10000,
0x7f36d4bfd000, 0x7f36d4ee2000,
0x7f36d4ee2000, 0x7f36d4f04000,
0x7f36d4f04000, 0x7f36d504c000,
0x7f36d504c000, 0x7f36d5098000,
0x7f36d5098000, 0x7f36d5099000,
0x7f36d5099000, 0x7f36d509d000,
0x7f36d509d000, 0x7f36d509f000,
0x7f36d509f000, 0x7f36d50a5000,
0x7f36d50b9000, 0x7f36d50db000,
0x7f36d50db000, 0x7f36d50dc000,
0x7f36d50dc000, 0x7f36d50fa000,
0x7f36d50fa000, 0x7f36d5102000,
0x7f36d5102000, 0x7f36d5103000,
0x7f36d5103000, 0x7f36d5104000,
0x7f36d5104000, 0x7f36d5105000,
0x7fff5876b000, 0x7fff5878d000,
0x7fff5878e000, 0x7fff58791000,
0x7fff58791000, 0x7fff58793000,
};
unsigned long holes[] = {
/*
* Note: start of hole is INCLUSIVE
* end of hole is EXCLUSIVE
* (opposite of the above table.)
* Start of hole, end of hole, size of hole (+1)
*/
0x565234afb000, 0x565234afc000, 0x1000,
0x565234afe000, 0x565235def000, 0x12F1000,
0x565235e10000, 0x7f36d4bfd000, 0x28E49EDED000,
};
/*
* req_range consists of 4 values.
* 1. min index
* 2. max index
* 3. size
* 4. number that should be returned.
* 5. return value
*/
unsigned long req_range[] = {
0x565234af9000, /* Min */
0x7fff58791000, /* Max */
0x1000, /* Size */
0x7fff5878d << 12, /* First rev hole of size 0x1000 */
0, /* Return value success. */
0x0, /* Min */
0x565234AF1 << 12, /* Max */
0x3000, /* Size */
0x565234AEE << 12, /* max - 3. */
0, /* Return value success. */
0x0, /* Min */
-1, /* Max */
0x1000, /* Size */
562949953421311 << 12,/* First rev hole of size 0x1000 */
0, /* Return value success. */
0x0, /* Min */
0x7F36D510A << 12, /* Max */
0x4000, /* Size */
0x7F36D5106 << 12, /* First rev hole of size 0x4000 */
0, /* Return value success. */
/* Ascend test. */
0x0,
34148798629 << 12,
19 << 12,
34148797418 << 12,
0x0,
/* Too big test. */
0x0,
18446744073709551615UL,
562915594369134UL << 12,
0x0,
-EBUSY,
};
int i, range_count = ARRAY_SIZE(range);
int req_range_count = ARRAY_SIZE(req_range);
unsigned long min = 0;
MA_STATE(mas, mt, 0, 0);
mtree_store_range(mt, MTREE_ALLOC_MAX, ULONG_MAX, XA_ZERO_ENTRY,
GFP_KERNEL);
#define DEBUG_REV_RANGE 0
for (i = 0; i < range_count; i += 2) {
/* Inclusive, Inclusive (with the -1) */
#if DEBUG_REV_RANGE
pr_debug("\t%s: Insert %lu-%lu\n", __func__, range[i] >> 12,
(range[i + 1] >> 12) - 1);
#endif
check_insert_range(mt, range[i] >> 12, (range[i + 1] >> 12) - 1,
xa_mk_value(range[i] >> 12), 0);
mt_validate(mt);
}
mas_lock(&mas);
for (i = 0; i < ARRAY_SIZE(holes); i += 3) {
#if DEBUG_REV_RANGE
pr_debug("Search from %lu-%lu for gap %lu should be at %lu\n",
min, holes[i+1]>>12, holes[i+2]>>12,
holes[i] >> 12);
#endif
MT_BUG_ON(mt, mas_empty_area_rev(&mas, min,
holes[i+1] >> 12,
holes[i+2] >> 12));
#if DEBUG_REV_RANGE
pr_debug("Found %lu %lu\n", mas.index, mas.last);
pr_debug("gap %lu %lu\n", (holes[i] >> 12),
(holes[i+1] >> 12));
#endif
MT_BUG_ON(mt, mas.last + 1 != (holes[i+1] >> 12));
MT_BUG_ON(mt, mas.index != (holes[i+1] >> 12) - (holes[i+2] >> 12));
min = holes[i+1] >> 12;
mas_reset(&mas);
}
mas_unlock(&mas);
for (i = 0; i < req_range_count; i += 5) {
#if DEBUG_REV_RANGE
pr_debug("\tReverse request between %lu-%lu size %lu, should get %lu\n",
req_range[i] >> 12,
(req_range[i + 1] >> 12) - 1,
req_range[i+2] >> 12,
req_range[i+3] >> 12);
#endif
check_mtree_alloc_rrange(mt,
req_range[i] >> 12, /* start */
req_range[i+1] >> 12, /* end */
req_range[i+2] >> 12, /* size */
req_range[i+3] >> 12, /* expected address */
req_range[i+4], /* expected return */
xa_mk_value(req_range[i] >> 12)); /* pointer */
mt_validate(mt);
}
mt_set_non_kernel(1);
mtree_erase(mt, 34148798727); /* create a deleted range. */
check_mtree_alloc_rrange(mt, 0, 34359052173, 210253414,
34148798725, 0, mt);
mtree_destroy(mt);
}
static noinline void check_alloc_range(struct maple_tree *mt)
{
/*
* Generated by:
* cat /proc/self/maps|awk '{print $1}'|
* awk -F "-" '{printf "0x%s, 0x%s, ", $1, $2}'
*/
unsigned long range[] = {
/* Inclusive , Exclusive. */
0x565234af2000, 0x565234af4000,
0x565234af4000, 0x565234af9000,
0x565234af9000, 0x565234afb000,
0x565234afc000, 0x565234afd000,
0x565234afd000, 0x565234afe000,
0x565235def000, 0x565235e10000,
0x7f36d4bfd000, 0x7f36d4ee2000,
0x7f36d4ee2000, 0x7f36d4f04000,
0x7f36d4f04000, 0x7f36d504c000,
0x7f36d504c000, 0x7f36d5098000,
0x7f36d5098000, 0x7f36d5099000,
0x7f36d5099000, 0x7f36d509d000,
0x7f36d509d000, 0x7f36d509f000,
0x7f36d509f000, 0x7f36d50a5000,
0x7f36d50b9000, 0x7f36d50db000,
0x7f36d50db000, 0x7f36d50dc000,
0x7f36d50dc000, 0x7f36d50fa000,
0x7f36d50fa000, 0x7f36d5102000,
0x7f36d5102000, 0x7f36d5103000,
0x7f36d5103000, 0x7f36d5104000,
0x7f36d5104000, 0x7f36d5105000,
0x7fff5876b000, 0x7fff5878d000,
0x7fff5878e000, 0x7fff58791000,
0x7fff58791000, 0x7fff58793000,
};
unsigned long holes[] = {
/* Start of hole, end of hole, size of hole (+1) */
0x565234afb000, 0x565234afc000, 0x1000,
0x565234afe000, 0x565235def000, 0x12F1000,
0x565235e10000, 0x7f36d4bfd000, 0x28E49EDED000,
};
/*
* req_range consists of 4 values.
* 1. min index
* 2. max index
* 3. size
* 4. number that should be returned.
* 5. return value
*/
unsigned long req_range[] = {
0x565234af9000, /* Min */
0x7fff58791000, /* Max */
0x1000, /* Size */
0x565234afb000, /* First hole in our data of size 1000. */
0, /* Return value success. */
0x0, /* Min */
0x7fff58791000, /* Max */
0x1F00, /* Size */
0x0, /* First hole in our data of size 2000. */
0, /* Return value success. */
/* Test ascend. */
34148797436 << 12, /* Min */
0x7fff587AF000, /* Max */
0x3000, /* Size */
34148798629 << 12, /* Expected location */
0, /* Return value success. */
/* Test failing. */
34148798623 << 12, /* Min */
34148798683 << 12, /* Max */
0x15000, /* Size */
0, /* Expected location */
-EBUSY, /* Return value failed. */
/* Test filling entire gap. */
34148798623 << 12, /* Min */
0x7fff587AF000, /* Max */
0x10000, /* Size */
34148798632 << 12, /* Expected location */
0, /* Return value success. */
/* Test walking off the end of root. */
0, /* Min */
-1, /* Max */
-1, /* Size */
0, /* Expected location */
-EBUSY, /* Return value failure. */
/* Test looking for too large a hole across entire range. */
0, /* Min */
-1, /* Max */
4503599618982063UL << 12, /* Size */
34359052178 << 12, /* Expected location */
-EBUSY, /* Return failure. */
};
int i, range_count = ARRAY_SIZE(range);
int req_range_count = ARRAY_SIZE(req_range);
unsigned long min = 0x565234af2000;
MA_STATE(mas, mt, 0, 0);
mtree_store_range(mt, MTREE_ALLOC_MAX, ULONG_MAX, XA_ZERO_ENTRY,
GFP_KERNEL);
for (i = 0; i < range_count; i += 2) {
#define DEBUG_ALLOC_RANGE 0
#if DEBUG_ALLOC_RANGE
pr_debug("\tInsert %lu-%lu\n", range[i] >> 12,
(range[i + 1] >> 12) - 1);
mt_dump(mt);
#endif
check_insert_range(mt, range[i] >> 12, (range[i + 1] >> 12) - 1,
xa_mk_value(range[i] >> 12), 0);
mt_validate(mt);
}
mas_lock(&mas);
for (i = 0; i < ARRAY_SIZE(holes); i += 3) {
#if DEBUG_ALLOC_RANGE
pr_debug("\tGet empty %lu-%lu size %lu (%lx-%lx)\n", min >> 12,
holes[i+1] >> 12, holes[i+2] >> 12,
min, holes[i+1]);
#endif
MT_BUG_ON(mt, mas_empty_area(&mas, min >> 12,
holes[i+1] >> 12,
holes[i+2] >> 12));
MT_BUG_ON(mt, mas.index != holes[i] >> 12);
min = holes[i+1];
mas_reset(&mas);
}
mas_unlock(&mas);
for (i = 0; i < req_range_count; i += 5) {
#if DEBUG_ALLOC_RANGE
pr_debug("\tTest %d: %lu-%lu size %lu expected %lu (%lu-%lu)\n",
i/5, req_range[i] >> 12, req_range[i + 1] >> 12,
req_range[i + 2] >> 12, req_range[i + 3] >> 12,
req_range[i], req_range[i+1]);
#endif
check_mtree_alloc_range(mt,
req_range[i] >> 12, /* start */
req_range[i+1] >> 12, /* end */
req_range[i+2] >> 12, /* size */
req_range[i+3] >> 12, /* expected address */
req_range[i+4], /* expected return */
xa_mk_value(req_range[i] >> 12)); /* pointer */
mt_validate(mt);
#if DEBUG_ALLOC_RANGE
mt_dump(mt);
#endif
}
mtree_destroy(mt);
}
#endif
static noinline void check_ranges(struct maple_tree *mt)
{
int i, val, val2;
unsigned long r[] = {
10, 15,
20, 25,
17, 22, /* Overlaps previous range. */
9, 1000, /* Huge. */
100, 200,
45, 168,
118, 128,
};
MT_BUG_ON(mt, !mtree_empty(mt));
check_insert_range(mt, r[0], r[1], xa_mk_value(r[0]), 0);
check_insert_range(mt, r[2], r[3], xa_mk_value(r[2]), 0);
check_insert_range(mt, r[4], r[5], xa_mk_value(r[4]), -EEXIST);
MT_BUG_ON(mt, !mt_height(mt));
/* Store */
check_store_range(mt, r[4], r[5], xa_mk_value(r[4]), 0);
check_store_range(mt, r[6], r[7], xa_mk_value(r[6]), 0);
check_store_range(mt, r[8], r[9], xa_mk_value(r[8]), 0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
MT_BUG_ON(mt, mt_height(mt));
check_seq(mt, 50, false);
mt_set_non_kernel(4);
check_store_range(mt, 5, 47, xa_mk_value(47), 0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
/* Create tree of 1-100 */
check_seq(mt, 100, false);
/* Store 45-168 */
mt_set_non_kernel(10);
check_store_range(mt, r[10], r[11], xa_mk_value(r[10]), 0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
/* Create tree of 1-200 */
check_seq(mt, 200, false);
/* Store 45-168 */
check_store_range(mt, r[10], r[11], xa_mk_value(r[10]), 0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
check_seq(mt, 30, false);
check_store_range(mt, 6, 18, xa_mk_value(6), 0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
/* Overwrite across multiple levels. */
/* Create tree of 1-400 */
check_seq(mt, 400, false);
mt_set_non_kernel(50);
/* Store 118-128 */
check_store_range(mt, r[12], r[13], xa_mk_value(r[12]), 0);
mt_set_non_kernel(50);
mtree_test_erase(mt, 140);
mtree_test_erase(mt, 141);
mtree_test_erase(mt, 142);
mtree_test_erase(mt, 143);
mtree_test_erase(mt, 130);
mtree_test_erase(mt, 131);
mtree_test_erase(mt, 132);
mtree_test_erase(mt, 133);
mtree_test_erase(mt, 134);
mtree_test_erase(mt, 135);
check_load(mt, r[12], xa_mk_value(r[12]));
check_load(mt, r[13], xa_mk_value(r[12]));
check_load(mt, r[13] - 1, xa_mk_value(r[12]));
check_load(mt, r[13] + 1, xa_mk_value(r[13] + 1));
check_load(mt, 135, NULL);
check_load(mt, 140, NULL);
mt_set_non_kernel(0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
/* Overwrite multiple levels at the end of the tree (slot 7) */
mt_set_non_kernel(50);
check_seq(mt, 400, false);
check_store_range(mt, 353, 361, xa_mk_value(353), 0);
check_store_range(mt, 347, 352, xa_mk_value(347), 0);
check_load(mt, 346, xa_mk_value(346));
for (i = 347; i <= 352; i++)
check_load(mt, i, xa_mk_value(347));
for (i = 353; i <= 361; i++)
check_load(mt, i, xa_mk_value(353));
check_load(mt, 362, xa_mk_value(362));
mt_set_non_kernel(0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
mt_set_non_kernel(50);
check_seq(mt, 400, false);
check_store_range(mt, 352, 364, NULL, 0);
check_store_range(mt, 351, 363, xa_mk_value(352), 0);
check_load(mt, 350, xa_mk_value(350));
check_load(mt, 351, xa_mk_value(352));
for (i = 352; i <= 363; i++)
check_load(mt, i, xa_mk_value(352));
check_load(mt, 364, NULL);
check_load(mt, 365, xa_mk_value(365));
mt_set_non_kernel(0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
mt_set_non_kernel(5);
check_seq(mt, 400, false);
check_store_range(mt, 352, 364, NULL, 0);
check_store_range(mt, 351, 364, xa_mk_value(352), 0);
check_load(mt, 350, xa_mk_value(350));
check_load(mt, 351, xa_mk_value(352));
for (i = 352; i <= 364; i++)
check_load(mt, i, xa_mk_value(352));
check_load(mt, 365, xa_mk_value(365));
mt_set_non_kernel(0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
mt_set_non_kernel(50);
check_seq(mt, 400, false);
check_store_range(mt, 362, 367, xa_mk_value(362), 0);
check_store_range(mt, 353, 361, xa_mk_value(353), 0);
mt_set_non_kernel(0);
mt_validate(mt);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
/*
* Interesting cases:
* 1. Overwrite the end of a node and end in the first entry of the next
* node.
* 2. Split a single range
* 3. Overwrite the start of a range
* 4. Overwrite the end of a range
* 5. Overwrite the entire range
* 6. Overwrite a range that causes multiple parent nodes to be
* combined
* 7. Overwrite a range that causes multiple parent nodes and part of
* root to be combined
* 8. Overwrite the whole tree
* 9. Try to overwrite the zero entry of an alloc tree.
* 10. Write a range larger than a nodes current pivot
*/
mt_set_non_kernel(50);
for (i = 0; i <= 500; i++) {
val = i*5;
val2 = (i+1)*5;
check_store_range(mt, val, val2, xa_mk_value(val), 0);
}
check_store_range(mt, 2400, 2400, xa_mk_value(2400), 0);
check_store_range(mt, 2411, 2411, xa_mk_value(2411), 0);
check_store_range(mt, 2412, 2412, xa_mk_value(2412), 0);
check_store_range(mt, 2396, 2400, xa_mk_value(4052020), 0);
check_store_range(mt, 2402, 2402, xa_mk_value(2402), 0);
mtree_destroy(mt);
mt_set_non_kernel(0);
mt_set_non_kernel(50);
for (i = 0; i <= 500; i++) {
val = i*5;
val2 = (i+1)*5;
check_store_range(mt, val, val2, xa_mk_value(val), 0);
}
check_store_range(mt, 2422, 2422, xa_mk_value(2422), 0);
check_store_range(mt, 2424, 2424, xa_mk_value(2424), 0);
check_store_range(mt, 2425, 2425, xa_mk_value(2), 0);
check_store_range(mt, 2460, 2470, NULL, 0);
check_store_range(mt, 2435, 2460, xa_mk_value(2435), 0);
check_store_range(mt, 2461, 2470, xa_mk_value(2461), 0);
mt_set_non_kernel(0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
/* Test rebalance gaps */
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
mt_set_non_kernel(50);
for (i = 0; i <= 50; i++) {
val = i*10;
val2 = (i+1)*10;
check_store_range(mt, val, val2, xa_mk_value(val), 0);
}
check_store_range(mt, 161, 161, xa_mk_value(161), 0);
check_store_range(mt, 162, 162, xa_mk_value(162), 0);
check_store_range(mt, 163, 163, xa_mk_value(163), 0);
check_store_range(mt, 240, 249, NULL, 0);
mtree_erase(mt, 200);
mtree_erase(mt, 210);
mtree_erase(mt, 220);
mtree_erase(mt, 230);
mt_set_non_kernel(0);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
for (i = 0; i <= 500; i++) {
val = i*10;
val2 = (i+1)*10;
check_store_range(mt, val, val2, xa_mk_value(val), 0);
}
check_store_range(mt, 4600, 4959, xa_mk_value(1), 0);
mt_validate(mt);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
for (i = 0; i <= 500; i++) {
val = i*10;
val2 = (i+1)*10;
check_store_range(mt, val, val2, xa_mk_value(val), 0);
}
check_store_range(mt, 4811, 4811, xa_mk_value(4811), 0);
check_store_range(mt, 4812, 4812, xa_mk_value(4812), 0);
check_store_range(mt, 4861, 4861, xa_mk_value(4861), 0);
check_store_range(mt, 4862, 4862, xa_mk_value(4862), 0);
check_store_range(mt, 4842, 4849, NULL, 0);
mt_validate(mt);
MT_BUG_ON(mt, !mt_height(mt));
mtree_destroy(mt);
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
for (i = 0; i <= 1300; i++) {
val = i*10;
val2 = (i+1)*10;
check_store_range(mt, val, val2, xa_mk_value(val), 0);
MT_BUG_ON(mt, mt_height(mt) >= 4);
}
/* Cause a 3 child split all the way up the tree. */
for (i = 5; i < 215; i += 10)
check_store_range(mt, 11450 + i, 11450 + i + 1, NULL, 0);
for (i = 5; i < 65; i += 10)
check_store_range(mt, 11770 + i, 11770 + i + 1, NULL, 0);
MT_BUG_ON(mt, mt_height(mt) >= 4);
for (i = 5; i < 45; i += 10)
check_store_range(mt, 11700 + i, 11700 + i + 1, NULL, 0);
if (!MAPLE_32BIT)
MT_BUG_ON(mt, mt_height(mt) < 4);
mtree_destroy(mt);
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
for (i = 0; i <= 1200; i++) {
val = i*10;
val2 = (i+1)*10;
check_store_range(mt, val, val2, xa_mk_value(val), 0);
MT_BUG_ON(mt, mt_height(mt) >= 4);
}
/* Fill parents and leaves before split. */
for (i = 5; i < 455; i += 10)
check_store_range(mt, 7800 + i, 7800 + i + 1, NULL, 0);
for (i = 1; i < 16; i++)
check_store_range(mt, 8185 + i, 8185 + i + 1,
xa_mk_value(8185+i), 0);
MT_BUG_ON(mt, mt_height(mt) >= 4);
/* triple split across multiple levels. */
check_store_range(mt, 8184, 8184, xa_mk_value(8184), 0);
if (!MAPLE_32BIT)
MT_BUG_ON(mt, mt_height(mt) != 4);
}
static noinline void check_next_entry(struct maple_tree *mt)
{
void *entry = NULL;
unsigned long limit = 30, i = 0;
MA_STATE(mas, mt, i, i);
MT_BUG_ON(mt, !mtree_empty(mt));
check_seq(mt, limit, false);
rcu_read_lock();
/* Check the first one and get ma_state in the correct state. */
MT_BUG_ON(mt, mas_walk(&mas) != xa_mk_value(i++));
for ( ; i <= limit + 1; i++) {
entry = mas_next(&mas, limit);
if (i > limit)
MT_BUG_ON(mt, entry != NULL);
else
MT_BUG_ON(mt, xa_mk_value(i) != entry);
}
rcu_read_unlock();
mtree_destroy(mt);
}
static noinline void check_prev_entry(struct maple_tree *mt)
{
unsigned long index = 16;
void *value;
int i;
MA_STATE(mas, mt, index, index);
MT_BUG_ON(mt, !mtree_empty(mt));
check_seq(mt, 30, false);
rcu_read_lock();
value = mas_find(&mas, ULONG_MAX);
MT_BUG_ON(mt, value != xa_mk_value(index));
value = mas_prev(&mas, 0);
MT_BUG_ON(mt, value != xa_mk_value(index - 1));
rcu_read_unlock();
mtree_destroy(mt);
/* Check limits on prev */
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
mas_lock(&mas);
for (i = 0; i <= index; i++) {
mas_set_range(&mas, i*10, i*10+5);
mas_store_gfp(&mas, xa_mk_value(i), GFP_KERNEL);
}
mas_set(&mas, 20);
value = mas_walk(&mas);
MT_BUG_ON(mt, value != xa_mk_value(2));
value = mas_prev(&mas, 19);
MT_BUG_ON(mt, value != NULL);
mas_set(&mas, 80);
value = mas_walk(&mas);
MT_BUG_ON(mt, value != xa_mk_value(8));
value = mas_prev(&mas, 76);
MT_BUG_ON(mt, value != NULL);
mas_unlock(&mas);
}
static noinline void check_root_expand(struct maple_tree *mt)
{
MA_STATE(mas, mt, 0, 0);
void *ptr;
mas_lock(&mas);
mas_set(&mas, 3);
ptr = mas_walk(&mas);
MT_BUG_ON(mt, ptr != NULL);
MT_BUG_ON(mt, mas.index != 0);
MT_BUG_ON(mt, mas.last != ULONG_MAX);
ptr = &check_prev_entry;
mas_set(&mas, 1);
mas_store_gfp(&mas, ptr, GFP_KERNEL);
mas_set(&mas, 0);
ptr = mas_walk(&mas);
MT_BUG_ON(mt, ptr != NULL);
mas_set(&mas, 1);
ptr = mas_walk(&mas);
MT_BUG_ON(mt, ptr != &check_prev_entry);
mas_set(&mas, 2);
ptr = mas_walk(&mas);
MT_BUG_ON(mt, ptr != NULL);
mas_unlock(&mas);
mtree_destroy(mt);
mt_init_flags(mt, 0);
mas_lock(&mas);
mas_set(&mas, 0);
ptr = &check_prev_entry;
mas_store_gfp(&mas, ptr, GFP_KERNEL);
mas_set(&mas, 5);
ptr = mas_walk(&mas);
MT_BUG_ON(mt, ptr != NULL);
MT_BUG_ON(mt, mas.index != 1);
MT_BUG_ON(mt, mas.last != ULONG_MAX);
mas_set_range(&mas, 0, 100);
ptr = mas_walk(&mas);
MT_BUG_ON(mt, ptr != &check_prev_entry);
MT_BUG_ON(mt, mas.last != 0);
mas_unlock(&mas);
mtree_destroy(mt);
mt_init_flags(mt, 0);
mas_lock(&mas);
mas_set(&mas, 0);
ptr = (void *)((unsigned long) check_prev_entry | 1UL);
mas_store_gfp(&mas, ptr, GFP_KERNEL);
ptr = mas_next(&mas, ULONG_MAX);
MT_BUG_ON(mt, ptr != NULL);
MT_BUG_ON(mt, (mas.index != 1) && (mas.last != ULONG_MAX));
mas_set(&mas, 1);
ptr = mas_prev(&mas, 0);
MT_BUG_ON(mt, (mas.index != 0) && (mas.last != 0));
MT_BUG_ON(mt, ptr != (void *)((unsigned long) check_prev_entry | 1UL));
mas_unlock(&mas);
mtree_destroy(mt);
mt_init_flags(mt, 0);
mas_lock(&mas);
mas_set(&mas, 0);
ptr = (void *)((unsigned long) check_prev_entry | 2UL);
mas_store_gfp(&mas, ptr, GFP_KERNEL);
ptr = mas_next(&mas, ULONG_MAX);
MT_BUG_ON(mt, ptr != NULL);
MT_BUG_ON(mt, (mas.index != 1) && (mas.last != ULONG_MAX));
mas_set(&mas, 1);
ptr = mas_prev(&mas, 0);
MT_BUG_ON(mt, (mas.index != 0) && (mas.last != 0));
MT_BUG_ON(mt, ptr != (void *)((unsigned long) check_prev_entry | 2UL));
mas_unlock(&mas);
}
static noinline void check_gap_combining(struct maple_tree *mt)
{
struct maple_enode *mn1, *mn2;
void *entry;
unsigned long singletons = 100;
unsigned long *seq100;
unsigned long seq100_64[] = {
/* 0-5 */
74, 75, 76,
50, 100, 2,
/* 6-12 */
44, 45, 46, 43,
20, 50, 3,
/* 13-20*/
80, 81, 82,
76, 2, 79, 85, 4,
};
unsigned long seq100_32[] = {
/* 0-5 */
61, 62, 63,
50, 100, 2,
/* 6-12 */
31, 32, 33, 30,
20, 50, 3,
/* 13-20*/
80, 81, 82,
76, 2, 79, 85, 4,
};
unsigned long seq2000[] = {
1152, 1151,
1100, 1200, 2,
};
unsigned long seq400[] = {
286, 318,
256, 260, 266, 270, 275, 280, 290, 398,
286, 310,
};
unsigned long index;
MA_STATE(mas, mt, 0, 0);
if (MAPLE_32BIT)
seq100 = seq100_32;
else
seq100 = seq100_64;
index = seq100[0];
mas_set(&mas, index);
MT_BUG_ON(mt, !mtree_empty(mt));
check_seq(mt, singletons, false); /* create 100 singletons. */
mt_set_non_kernel(1);
mtree_test_erase(mt, seq100[2]);
check_load(mt, seq100[2], NULL);
mtree_test_erase(mt, seq100[1]);
check_load(mt, seq100[1], NULL);
rcu_read_lock();
entry = mas_find(&mas, ULONG_MAX);
MT_BUG_ON(mt, entry != xa_mk_value(index));
mn1 = mas.node;
mas_next(&mas, ULONG_MAX);
entry = mas_next(&mas, ULONG_MAX);
MT_BUG_ON(mt, entry != xa_mk_value(index + 4));
mn2 = mas.node;
MT_BUG_ON(mt, mn1 == mn2); /* test the test. */
/*
* At this point, there is a gap of 2 at index + 1 between seq100[3] and
* seq100[4]. Search for the gap.
*/
mt_set_non_kernel(1);
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, seq100[3], seq100[4],
seq100[5]));
MT_BUG_ON(mt, mas.index != index + 1);
rcu_read_unlock();
mtree_test_erase(mt, seq100[6]);
check_load(mt, seq100[6], NULL);
mtree_test_erase(mt, seq100[7]);
check_load(mt, seq100[7], NULL);
mtree_test_erase(mt, seq100[8]);
index = seq100[9];
rcu_read_lock();
mas.index = index;
mas.last = index;
mas_reset(&mas);
entry = mas_find(&mas, ULONG_MAX);
MT_BUG_ON(mt, entry != xa_mk_value(index));
mn1 = mas.node;
entry = mas_next(&mas, ULONG_MAX);
MT_BUG_ON(mt, entry != xa_mk_value(index + 4));
mas_next(&mas, ULONG_MAX); /* go to the next entry. */
mn2 = mas.node;
MT_BUG_ON(mt, mn1 == mn2); /* test the next entry is in the next node. */
/*
* At this point, there is a gap of 3 at seq100[6]. Find it by
* searching 20 - 50 for size 3.
*/
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, seq100[10], seq100[11],
seq100[12]));
MT_BUG_ON(mt, mas.index != seq100[6]);
rcu_read_unlock();
mt_set_non_kernel(1);
mtree_store(mt, seq100[13], NULL, GFP_KERNEL);
check_load(mt, seq100[13], NULL);
check_load(mt, seq100[14], xa_mk_value(seq100[14]));
mtree_store(mt, seq100[14], NULL, GFP_KERNEL);
check_load(mt, seq100[13], NULL);
check_load(mt, seq100[14], NULL);
mas_reset(&mas);
rcu_read_lock();
MT_BUG_ON(mt, mas_empty_area_rev(&mas, seq100[16], seq100[15],
seq100[17]));
MT_BUG_ON(mt, mas.index != seq100[13]);
mt_validate(mt);
rcu_read_unlock();
/*
* *DEPRECATED: no retries anymore* Test retry entry in the start of a
* gap.
*/
mt_set_non_kernel(2);
mtree_test_store_range(mt, seq100[18], seq100[14], NULL);
mtree_test_erase(mt, seq100[15]);
mas_reset(&mas);
rcu_read_lock();
MT_BUG_ON(mt, mas_empty_area_rev(&mas, seq100[16], seq100[19],
seq100[20]));
rcu_read_unlock();
MT_BUG_ON(mt, mas.index != seq100[18]);
mt_validate(mt);
mtree_destroy(mt);
/* seq 2000 tests are for multi-level tree gaps */
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_seq(mt, 2000, false);
mt_set_non_kernel(1);
mtree_test_erase(mt, seq2000[0]);
mtree_test_erase(mt, seq2000[1]);
mt_set_non_kernel(2);
mas_reset(&mas);
rcu_read_lock();
MT_BUG_ON(mt, mas_empty_area_rev(&mas, seq2000[2], seq2000[3],
seq2000[4]));
MT_BUG_ON(mt, mas.index != seq2000[1]);
rcu_read_unlock();
mt_validate(mt);
mtree_destroy(mt);
/* seq 400 tests rebalancing over two levels. */
mt_set_non_kernel(99);
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_seq(mt, 400, false);
mtree_test_store_range(mt, seq400[0], seq400[1], NULL);
mt_set_non_kernel(0);
mtree_destroy(mt);
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_seq(mt, 400, false);
mt_set_non_kernel(50);
mtree_test_store_range(mt, seq400[2], seq400[9],
xa_mk_value(seq400[2]));
mtree_test_store_range(mt, seq400[3], seq400[9],
xa_mk_value(seq400[3]));
mtree_test_store_range(mt, seq400[4], seq400[9],
xa_mk_value(seq400[4]));
mtree_test_store_range(mt, seq400[5], seq400[9],
xa_mk_value(seq400[5]));
mtree_test_store_range(mt, seq400[0], seq400[9],
xa_mk_value(seq400[0]));
mtree_test_store_range(mt, seq400[6], seq400[9],
xa_mk_value(seq400[6]));
mtree_test_store_range(mt, seq400[7], seq400[9],
xa_mk_value(seq400[7]));
mtree_test_store_range(mt, seq400[8], seq400[9],
xa_mk_value(seq400[8]));
mtree_test_store_range(mt, seq400[10], seq400[11],
xa_mk_value(seq400[10]));
mt_validate(mt);
mt_set_non_kernel(0);
mtree_destroy(mt);
}
static noinline void check_node_overwrite(struct maple_tree *mt)
{
int i, max = 4000;
for (i = 0; i < max; i++)
mtree_test_store_range(mt, i*100, i*100 + 50, xa_mk_value(i*100));
mtree_test_store_range(mt, 319951, 367950, NULL);
/*mt_dump(mt); */
mt_validate(mt);
}
#if defined(BENCH_SLOT_STORE)
static noinline void bench_slot_store(struct maple_tree *mt)
{
int i, brk = 105, max = 1040, brk_start = 100, count = 20000000;
for (i = 0; i < max; i += 10)
mtree_store_range(mt, i, i + 5, xa_mk_value(i), GFP_KERNEL);
for (i = 0; i < count; i++) {
mtree_store_range(mt, brk, brk, NULL, GFP_KERNEL);
mtree_store_range(mt, brk_start, brk, xa_mk_value(brk),
GFP_KERNEL);
}
}
#endif
#if defined(BENCH_NODE_STORE)
static noinline void bench_node_store(struct maple_tree *mt)
{
int i, overwrite = 76, max = 240, count = 20000000;
for (i = 0; i < max; i += 10)
mtree_store_range(mt, i, i + 5, xa_mk_value(i), GFP_KERNEL);
for (i = 0; i < count; i++) {
mtree_store_range(mt, overwrite, overwrite + 15,
xa_mk_value(overwrite), GFP_KERNEL);
overwrite += 5;
if (overwrite >= 135)
overwrite = 76;
}
}
#endif
#if defined(BENCH_AWALK)
static noinline void bench_awalk(struct maple_tree *mt)
{
int i, max = 2500, count = 50000000;
MA_STATE(mas, mt, 1470, 1470);
for (i = 0; i < max; i += 10)
mtree_store_range(mt, i, i + 5, xa_mk_value(i), GFP_KERNEL);
mtree_store_range(mt, 1470, 1475, NULL, GFP_KERNEL);
for (i = 0; i < count; i++) {
mas_empty_area_rev(&mas, 0, 2000, 10);
mas_reset(&mas);
}
}
#endif
#if defined(BENCH_WALK)
static noinline void bench_walk(struct maple_tree *mt)
{
int i, max = 2500, count = 550000000;
MA_STATE(mas, mt, 1470, 1470);
for (i = 0; i < max; i += 10)
mtree_store_range(mt, i, i + 5, xa_mk_value(i), GFP_KERNEL);
for (i = 0; i < count; i++) {
mas_walk(&mas);
mas_reset(&mas);
}
}
#endif
#if defined(BENCH_MT_FOR_EACH)
static noinline void bench_mt_for_each(struct maple_tree *mt)
{
int i, count = 1000000;
unsigned long max = 2500, index = 0;
void *entry;
for (i = 0; i < max; i += 5)
mtree_store_range(mt, i, i + 4, xa_mk_value(i), GFP_KERNEL);
for (i = 0; i < count; i++) {
unsigned long j = 0;
mt_for_each(mt, entry, index, max) {
MT_BUG_ON(mt, entry != xa_mk_value(j));
j += 5;
}
index = 0;
}
}
#endif
/* check_forking - simulate the kernel forking sequence with the tree. */
static noinline void check_forking(struct maple_tree *mt)
{
struct maple_tree newmt;
int i, nr_entries = 134;
void *val;
MA_STATE(mas, mt, 0, 0);
MA_STATE(newmas, mt, 0, 0);
for (i = 0; i <= nr_entries; i++)
mtree_store_range(mt, i*10, i*10 + 5,
xa_mk_value(i), GFP_KERNEL);
mt_set_non_kernel(99999);
mt_init_flags(&newmt, MT_FLAGS_ALLOC_RANGE);
newmas.tree = &newmt;
mas_reset(&newmas);
mas_reset(&mas);
mas_lock(&newmas);
mas.index = 0;
mas.last = 0;
if (mas_expected_entries(&newmas, nr_entries)) {
pr_err("OOM!");
BUG_ON(1);
}
rcu_read_lock();
mas_for_each(&mas, val, ULONG_MAX) {
newmas.index = mas.index;
newmas.last = mas.last;
mas_store(&newmas, val);
}
rcu_read_unlock();
mas_destroy(&newmas);
mas_unlock(&newmas);
mt_validate(&newmt);
mt_set_non_kernel(0);
mtree_destroy(&newmt);
}
static noinline void check_iteration(struct maple_tree *mt)
{
int i, nr_entries = 125;
void *val;
MA_STATE(mas, mt, 0, 0);
for (i = 0; i <= nr_entries; i++)
mtree_store_range(mt, i * 10, i * 10 + 9,
xa_mk_value(i), GFP_KERNEL);
mt_set_non_kernel(99999);
i = 0;
mas_lock(&mas);
mas_for_each(&mas, val, 925) {
MT_BUG_ON(mt, mas.index != i * 10);
MT_BUG_ON(mt, mas.last != i * 10 + 9);
/* Overwrite end of entry 92 */
if (i == 92) {
mas.index = 925;
mas.last = 929;
mas_store(&mas, val);
}
i++;
}
/* Ensure mas_find() gets the next value */
val = mas_find(&mas, ULONG_MAX);
MT_BUG_ON(mt, val != xa_mk_value(i));
mas_set(&mas, 0);
i = 0;
mas_for_each(&mas, val, 785) {
MT_BUG_ON(mt, mas.index != i * 10);
MT_BUG_ON(mt, mas.last != i * 10 + 9);
/* Overwrite start of entry 78 */
if (i == 78) {
mas.index = 780;
mas.last = 785;
mas_store(&mas, val);
} else {
i++;
}
}
val = mas_find(&mas, ULONG_MAX);
MT_BUG_ON(mt, val != xa_mk_value(i));
mas_set(&mas, 0);
i = 0;
mas_for_each(&mas, val, 765) {
MT_BUG_ON(mt, mas.index != i * 10);
MT_BUG_ON(mt, mas.last != i * 10 + 9);
/* Overwrite end of entry 76 and advance to the end */
if (i == 76) {
mas.index = 760;
mas.last = 765;
mas_store(&mas, val);
mas_next(&mas, ULONG_MAX);
}
i++;
}
/* Make sure the next find returns the one after 765, 766-769 */
val = mas_find(&mas, ULONG_MAX);
MT_BUG_ON(mt, val != xa_mk_value(76));
mas_unlock(&mas);
mas_destroy(&mas);
mt_set_non_kernel(0);
}
static noinline void check_mas_store_gfp(struct maple_tree *mt)
{
struct maple_tree newmt;
int i, nr_entries = 135;
void *val;
MA_STATE(mas, mt, 0, 0);
MA_STATE(newmas, mt, 0, 0);
for (i = 0; i <= nr_entries; i++)
mtree_store_range(mt, i*10, i*10 + 5,
xa_mk_value(i), GFP_KERNEL);
mt_set_non_kernel(99999);
mt_init_flags(&newmt, MT_FLAGS_ALLOC_RANGE);
newmas.tree = &newmt;
rcu_read_lock();
mas_lock(&newmas);
mas_reset(&newmas);
mas_set(&mas, 0);
mas_for_each(&mas, val, ULONG_MAX) {
newmas.index = mas.index;
newmas.last = mas.last;
mas_store_gfp(&newmas, val, GFP_KERNEL);
}
mas_unlock(&newmas);
rcu_read_unlock();
mt_validate(&newmt);
mt_set_non_kernel(0);
mtree_destroy(&newmt);
}
#if defined(BENCH_FORK)
static noinline void bench_forking(struct maple_tree *mt)
{
struct maple_tree newmt;
int i, nr_entries = 134, nr_fork = 80000;
void *val;
MA_STATE(mas, mt, 0, 0);
MA_STATE(newmas, mt, 0, 0);
for (i = 0; i <= nr_entries; i++)
mtree_store_range(mt, i*10, i*10 + 5,
xa_mk_value(i), GFP_KERNEL);
for (i = 0; i < nr_fork; i++) {
mt_set_non_kernel(99999);
mt_init_flags(&newmt, MT_FLAGS_ALLOC_RANGE);
newmas.tree = &newmt;
mas_reset(&newmas);
mas_reset(&mas);
mas.index = 0;
mas.last = 0;
rcu_read_lock();
mas_lock(&newmas);
if (mas_expected_entries(&newmas, nr_entries)) {
printk("OOM!");
BUG_ON(1);
}
mas_for_each(&mas, val, ULONG_MAX) {
newmas.index = mas.index;
newmas.last = mas.last;
mas_store(&newmas, val);
}
mas_destroy(&newmas);
mas_unlock(&newmas);
rcu_read_unlock();
mt_validate(&newmt);
mt_set_non_kernel(0);
mtree_destroy(&newmt);
}
}
#endif
static noinline void next_prev_test(struct maple_tree *mt)
{
int i, nr_entries;
void *val;
MA_STATE(mas, mt, 0, 0);
struct maple_enode *mn;
unsigned long *level2;
unsigned long level2_64[] = {707, 1000, 710, 715, 720, 725};
unsigned long level2_32[] = {1747, 2000, 1750, 1755, 1760, 1765};
if (MAPLE_32BIT) {
nr_entries = 500;
level2 = level2_32;
} else {
nr_entries = 200;
level2 = level2_64;
}
for (i = 0; i <= nr_entries; i++)
mtree_store_range(mt, i*10, i*10 + 5,
xa_mk_value(i), GFP_KERNEL);
mas_lock(&mas);
for (i = 0; i <= nr_entries / 2; i++) {
mas_next(&mas, 1000);
if (mas_is_none(&mas))
break;
}
mas_reset(&mas);
mas_set(&mas, 0);
i = 0;
mas_for_each(&mas, val, 1000) {
i++;
}
mas_reset(&mas);
mas_set(&mas, 0);
i = 0;
mas_for_each(&mas, val, 1000) {
mas_pause(&mas);
i++;
}
/*
* 680 - 685 = 0x61a00001930c
* 686 - 689 = NULL;
* 690 - 695 = 0x61a00001930c
* Check simple next/prev
*/
mas_set(&mas, 686);
val = mas_walk(&mas);
MT_BUG_ON(mt, val != NULL);
val = mas_next(&mas, 1000);
MT_BUG_ON(mt, val != xa_mk_value(690 / 10));
MT_BUG_ON(mt, mas.index != 690);
MT_BUG_ON(mt, mas.last != 695);
val = mas_prev(&mas, 0);
MT_BUG_ON(mt, val != xa_mk_value(680 / 10));
MT_BUG_ON(mt, mas.index != 680);
MT_BUG_ON(mt, mas.last != 685);
val = mas_next(&mas, 1000);
MT_BUG_ON(mt, val != xa_mk_value(690 / 10));
MT_BUG_ON(mt, mas.index != 690);
MT_BUG_ON(mt, mas.last != 695);
val = mas_next(&mas, 1000);
MT_BUG_ON(mt, val != xa_mk_value(700 / 10));
MT_BUG_ON(mt, mas.index != 700);
MT_BUG_ON(mt, mas.last != 705);
/* Check across node boundaries of the tree */
mas_set(&mas, 70);
val = mas_walk(&mas);
MT_BUG_ON(mt, val != xa_mk_value(70 / 10));
MT_BUG_ON(mt, mas.index != 70);
MT_BUG_ON(mt, mas.last != 75);
val = mas_next(&mas, 1000);
MT_BUG_ON(mt, val != xa_mk_value(80 / 10));
MT_BUG_ON(mt, mas.index != 80);
MT_BUG_ON(mt, mas.last != 85);
val = mas_prev(&mas, 70);
MT_BUG_ON(mt, val != xa_mk_value(70 / 10));
MT_BUG_ON(mt, mas.index != 70);
MT_BUG_ON(mt, mas.last != 75);
/* Check across two levels of the tree */
mas_reset(&mas);
mas_set(&mas, level2[0]);
val = mas_walk(&mas);
MT_BUG_ON(mt, val != NULL);
val = mas_next(&mas, level2[1]);
MT_BUG_ON(mt, val != xa_mk_value(level2[2] / 10));
MT_BUG_ON(mt, mas.index != level2[2]);
MT_BUG_ON(mt, mas.last != level2[3]);
mn = mas.node;
val = mas_next(&mas, level2[1]);
MT_BUG_ON(mt, val != xa_mk_value(level2[4] / 10));
MT_BUG_ON(mt, mas.index != level2[4]);
MT_BUG_ON(mt, mas.last != level2[5]);
MT_BUG_ON(mt, mn == mas.node);
val = mas_prev(&mas, 0);
MT_BUG_ON(mt, val != xa_mk_value(level2[2] / 10));
MT_BUG_ON(mt, mas.index != level2[2]);
MT_BUG_ON(mt, mas.last != level2[3]);
/* Check running off the end and back on */
mas_set(&mas, nr_entries * 10);
val = mas_walk(&mas);
MT_BUG_ON(mt, val != xa_mk_value(nr_entries));
MT_BUG_ON(mt, mas.index != (nr_entries * 10));
MT_BUG_ON(mt, mas.last != (nr_entries * 10 + 5));
val = mas_next(&mas, ULONG_MAX);
MT_BUG_ON(mt, val != NULL);
MT_BUG_ON(mt, mas.index != ULONG_MAX);
MT_BUG_ON(mt, mas.last != ULONG_MAX);
val = mas_prev(&mas, 0);
MT_BUG_ON(mt, val != xa_mk_value(nr_entries));
MT_BUG_ON(mt, mas.index != (nr_entries * 10));
MT_BUG_ON(mt, mas.last != (nr_entries * 10 + 5));
/* Check running off the start and back on */
mas_reset(&mas);
mas_set(&mas, 10);
val = mas_walk(&mas);
MT_BUG_ON(mt, val != xa_mk_value(1));
MT_BUG_ON(mt, mas.index != 10);
MT_BUG_ON(mt, mas.last != 15);
val = mas_prev(&mas, 0);
MT_BUG_ON(mt, val != xa_mk_value(0));
MT_BUG_ON(mt, mas.index != 0);
MT_BUG_ON(mt, mas.last != 5);
val = mas_prev(&mas, 0);
MT_BUG_ON(mt, val != NULL);
MT_BUG_ON(mt, mas.index != 0);
MT_BUG_ON(mt, mas.last != 0);
mas.index = 0;
mas.last = 5;
mas_store(&mas, NULL);
mas_reset(&mas);
mas_set(&mas, 10);
mas_walk(&mas);
val = mas_prev(&mas, 0);
MT_BUG_ON(mt, val != NULL);
MT_BUG_ON(mt, mas.index != 0);
MT_BUG_ON(mt, mas.last != 0);
mas_unlock(&mas);
mtree_destroy(mt);
mt_init(mt);
mtree_store_range(mt, 0, 0, xa_mk_value(0), GFP_KERNEL);
mtree_store_range(mt, 5, 5, xa_mk_value(5), GFP_KERNEL);
rcu_read_lock();
mas_set(&mas, 5);
val = mas_prev(&mas, 4);
MT_BUG_ON(mt, val != NULL);
rcu_read_unlock();
}
/* Test spanning writes that require balancing right sibling or right cousin */
static noinline void check_spanning_relatives(struct maple_tree *mt)
{
unsigned long i, nr_entries = 1000;
for (i = 0; i <= nr_entries; i++)
mtree_store_range(mt, i*10, i*10 + 5,
xa_mk_value(i), GFP_KERNEL);
mtree_store_range(mt, 9365, 9955, NULL, GFP_KERNEL);
}
static noinline void check_fuzzer(struct maple_tree *mt)
{
/*
* 1. Causes a spanning rebalance of a single root node.
* Fixed by setting the correct limit in mast_cp_to_nodes() when the
* entire right side is consumed.
*/
mtree_test_insert(mt, 88, (void *)0xb1);
mtree_test_insert(mt, 84, (void *)0xa9);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, 4, (void *)0x9);
mtree_test_insert(mt, 14, (void *)0x1d);
mtree_test_insert(mt, 7, (void *)0xf);
mtree_test_insert(mt, 12, (void *)0x19);
mtree_test_insert(mt, 18, (void *)0x25);
mtree_test_store_range(mt, 8, 18, (void *)0x11);
mtree_destroy(mt);
/*
* 2. Cause a spanning rebalance of two nodes in root.
* Fixed by setting mast->r->max correctly.
*/
mt_init_flags(mt, 0);
mtree_test_store(mt, 87, (void *)0xaf);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_load(mt, 4);
mtree_test_insert(mt, 4, (void *)0x9);
mtree_test_store(mt, 8, (void *)0x11);
mtree_test_store(mt, 44, (void *)0x59);
mtree_test_store(mt, 68, (void *)0x89);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_insert(mt, 43, (void *)0x57);
mtree_test_insert(mt, 24, (void *)0x31);
mtree_test_insert(mt, 844, (void *)0x699);
mtree_test_store(mt, 84, (void *)0xa9);
mtree_test_store(mt, 4, (void *)0x9);
mtree_test_erase(mt, 4);
mtree_test_load(mt, 5);
mtree_test_erase(mt, 0);
mtree_destroy(mt);
/*
* 3. Cause a node overflow on copy
* Fixed by using the correct check for node size in mas_wr_modify()
* Also discovered issue with metadata setting.
*/
mt_init_flags(mt, 0);
mtree_test_store_range(mt, 0, ULONG_MAX, (void *)0x1);
mtree_test_store(mt, 4, (void *)0x9);
mtree_test_erase(mt, 5);
mtree_test_erase(mt, 0);
mtree_test_erase(mt, 4);
mtree_test_store(mt, 5, (void *)0xb);
mtree_test_erase(mt, 5);
mtree_test_store(mt, 5, (void *)0xb);
mtree_test_erase(mt, 5);
mtree_test_erase(mt, 4);
mtree_test_store(mt, 4, (void *)0x9);
mtree_test_store(mt, 444, (void *)0x379);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_load(mt, 0);
mtree_test_store(mt, 5, (void *)0xb);
mtree_test_erase(mt, 0);
mtree_destroy(mt);
/*
* 4. spanning store failure due to writing incorrect pivot value at
* last slot.
* Fixed by setting mast->r->max correctly in mast_cp_to_nodes()
*
*/
mt_init_flags(mt, 0);
mtree_test_insert(mt, 261, (void *)0x20b);
mtree_test_store(mt, 516, (void *)0x409);
mtree_test_store(mt, 6, (void *)0xd);
mtree_test_insert(mt, 5, (void *)0xb);
mtree_test_insert(mt, 1256, (void *)0x9d1);
mtree_test_store(mt, 4, (void *)0x9);
mtree_test_erase(mt, 1);
mtree_test_store(mt, 56, (void *)0x71);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_store(mt, 24, (void *)0x31);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 2263, (void *)0x11af);
mtree_test_insert(mt, 446, (void *)0x37d);
mtree_test_store_range(mt, 6, 45, (void *)0xd);
mtree_test_store_range(mt, 3, 446, (void *)0x7);
mtree_destroy(mt);
/*
* 5. mas_wr_extend_null() may overflow slots.
* Fix by checking against wr_mas->node_end.
*/
mt_init_flags(mt, 0);
mtree_test_store(mt, 48, (void *)0x61);
mtree_test_store(mt, 3, (void *)0x7);
mtree_test_load(mt, 0);
mtree_test_store(mt, 88, (void *)0xb1);
mtree_test_store(mt, 81, (void *)0xa3);
mtree_test_insert(mt, 0, (void *)0x1);
mtree_test_insert(mt, 8, (void *)0x11);
mtree_test_insert(mt, 4, (void *)0x9);
mtree_test_insert(mt, 2480, (void *)0x1361);
mtree_test_insert(mt, ULONG_MAX,
(void *)0xffffffffffffffff);
mtree_test_erase(mt, ULONG_MAX);
mtree_destroy(mt);
/*
* 6. When reusing a node with an implied pivot and the node is
* shrinking, old data would be left in the implied slot
* Fixed by checking the last pivot for the mas->max and clear
* accordingly. This only affected the left-most node as that node is
* the only one allowed to end in NULL.
*/
mt_init_flags(mt, 0);
mtree_test_erase(mt, 3);
mtree_test_insert(mt, 22, (void *)0x2d);
mtree_test_insert(mt, 15, (void *)0x1f);
mtree_test_load(mt, 2);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert(mt, 5, (void *)0xb);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert(mt, 4, (void *)0x9);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 3);
mtree_test_insert(mt, 22, (void *)0x2d);
mtree_test_insert(mt, 15, (void *)0x1f);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert(mt, 8, (void *)0x11);
mtree_test_load(mt, 2);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_store(mt, 1, (void *)0x3);
mtree_test_insert(mt, 5, (void *)0xb);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert(mt, 4, (void *)0x9);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 3);
mtree_test_insert(mt, 22, (void *)0x2d);
mtree_test_insert(mt, 15, (void *)0x1f);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert(mt, 8, (void *)0x11);
mtree_test_insert(mt, 12, (void *)0x19);
mtree_test_erase(mt, 1);
mtree_test_store_range(mt, 4, 62, (void *)0x9);
mtree_test_erase(mt, 62);
mtree_test_store_range(mt, 1, 0, (void *)0x3);
mtree_test_insert(mt, 11, (void *)0x17);
mtree_test_insert(mt, 3, (void *)0x7);
mtree_test_insert(mt, 3, (void *)0x7);
mtree_test_store(mt, 62, (void *)0x7d);
mtree_test_erase(mt, 62);
mtree_test_store_range(mt, 1, 15, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 22, (void *)0x2d);
mtree_test_insert(mt, 12, (void *)0x19);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 3, (void *)0x7);
mtree_test_store(mt, 62, (void *)0x7d);
mtree_test_erase(mt, 62);
mtree_test_insert(mt, 122, (void *)0xf5);
mtree_test_store(mt, 3, (void *)0x7);
mtree_test_insert(mt, 0, (void *)0x1);
mtree_test_store_range(mt, 0, 1, (void *)0x1);
mtree_test_insert(mt, 85, (void *)0xab);
mtree_test_insert(mt, 72, (void *)0x91);
mtree_test_insert(mt, 81, (void *)0xa3);
mtree_test_insert(mt, 726, (void *)0x5ad);
mtree_test_insert(mt, 0, (void *)0x1);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_store(mt, 51, (void *)0x67);
mtree_test_insert(mt, 611, (void *)0x4c7);
mtree_test_insert(mt, 485, (void *)0x3cb);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 0, (void *)0x1);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert_range(mt, 26, 1, (void *)0x35);
mtree_test_load(mt, 1);
mtree_test_store_range(mt, 1, 22, (void *)0x3);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_load(mt, 53);
mtree_test_load(mt, 1);
mtree_test_store_range(mt, 1, 1, (void *)0x3);
mtree_test_insert(mt, 222, (void *)0x1bd);
mtree_test_insert(mt, 485, (void *)0x3cb);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_load(mt, 0);
mtree_test_insert(mt, 21, (void *)0x2b);
mtree_test_insert(mt, 3, (void *)0x7);
mtree_test_store(mt, 621, (void *)0x4db);
mtree_test_insert(mt, 0, (void *)0x1);
mtree_test_erase(mt, 5);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_store(mt, 62, (void *)0x7d);
mtree_test_erase(mt, 62);
mtree_test_store_range(mt, 1, 0, (void *)0x3);
mtree_test_insert(mt, 22, (void *)0x2d);
mtree_test_insert(mt, 12, (void *)0x19);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_store_range(mt, 4, 62, (void *)0x9);
mtree_test_erase(mt, 62);
mtree_test_erase(mt, 1);
mtree_test_load(mt, 1);
mtree_test_store_range(mt, 1, 22, (void *)0x3);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_load(mt, 53);
mtree_test_load(mt, 1);
mtree_test_store_range(mt, 1, 1, (void *)0x3);
mtree_test_insert(mt, 222, (void *)0x1bd);
mtree_test_insert(mt, 485, (void *)0x3cb);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_load(mt, 0);
mtree_test_load(mt, 0);
mtree_destroy(mt);
/*
* 7. Previous fix was incomplete, fix mas_resuse_node() clearing of old
* data by overwriting it first - that way metadata is of no concern.
*/
mt_init_flags(mt, 0);
mtree_test_load(mt, 1);
mtree_test_insert(mt, 102, (void *)0xcd);
mtree_test_erase(mt, 2);
mtree_test_erase(mt, 0);
mtree_test_load(mt, 0);
mtree_test_insert(mt, 4, (void *)0x9);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, 110, (void *)0xdd);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_insert_range(mt, 5, 0, (void *)0xb);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_store(mt, 112, (void *)0xe1);
mtree_test_insert(mt, 21, (void *)0x2b);
mtree_test_store(mt, 1, (void *)0x3);
mtree_test_insert_range(mt, 110, 2, (void *)0xdd);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_load(mt, 22);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 210, (void *)0x1a5);
mtree_test_store_range(mt, 0, 2, (void *)0x1);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_erase(mt, 2);
mtree_test_erase(mt, 22);
mtree_test_erase(mt, 1);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_load(mt, 112);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 1, (void *)0x3);
mtree_test_insert_range(mt, 1, 2, (void *)0x3);
mtree_test_erase(mt, 0);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_erase(mt, 0);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_erase(mt, 2);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert_range(mt, 1, 2, (void *)0x3);
mtree_test_erase(mt, 0);
mtree_test_erase(mt, 2);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_load(mt, 112);
mtree_test_store_range(mt, 110, 12, (void *)0xdd);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_load(mt, 110);
mtree_test_insert_range(mt, 4, 71, (void *)0x9);
mtree_test_load(mt, 2);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_insert_range(mt, 11, 22, (void *)0x17);
mtree_test_erase(mt, 12);
mtree_test_store(mt, 2, (void *)0x5);
mtree_test_load(mt, 22);
mtree_destroy(mt);
/*
* 8. When rebalancing or spanning_rebalance(), the max of the new node
* may be set incorrectly to the final pivot and not the right max.
* Fix by setting the left max to orig right max if the entire node is
* consumed.
*/
mt_init_flags(mt, 0);
mtree_test_store(mt, 6, (void *)0xd);
mtree_test_store(mt, 67, (void *)0x87);
mtree_test_insert(mt, 15, (void *)0x1f);
mtree_test_insert(mt, 6716, (void *)0x3479);
mtree_test_store(mt, 61, (void *)0x7b);
mtree_test_insert(mt, 13, (void *)0x1b);
mtree_test_store(mt, 8, (void *)0x11);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_load(mt, 0);
mtree_test_erase(mt, 67167);
mtree_test_insert_range(mt, 6, 7167, (void *)0xd);
mtree_test_insert(mt, 6, (void *)0xd);
mtree_test_erase(mt, 67);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 667167);
mtree_test_insert(mt, 6, (void *)0xd);
mtree_test_store(mt, 67, (void *)0x87);
mtree_test_insert(mt, 5, (void *)0xb);
mtree_test_erase(mt, 1);
mtree_test_insert(mt, 6, (void *)0xd);
mtree_test_erase(mt, 67);
mtree_test_insert(mt, 15, (void *)0x1f);
mtree_test_insert(mt, 67167, (void *)0x20cbf);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_load(mt, 7);
mtree_test_insert(mt, 16, (void *)0x21);
mtree_test_insert(mt, 36, (void *)0x49);
mtree_test_store(mt, 67, (void *)0x87);
mtree_test_store(mt, 6, (void *)0xd);
mtree_test_insert(mt, 367, (void *)0x2df);
mtree_test_insert(mt, 115, (void *)0xe7);
mtree_test_store(mt, 0, (void *)0x1);
mtree_test_store_range(mt, 1, 3, (void *)0x3);
mtree_test_store(mt, 1, (void *)0x3);
mtree_test_erase(mt, 67167);
mtree_test_insert_range(mt, 6, 47, (void *)0xd);
mtree_test_store(mt, 1, (void *)0x3);
mtree_test_insert_range(mt, 1, 67, (void *)0x3);
mtree_test_load(mt, 67);
mtree_test_insert(mt, 1, (void *)0x3);
mtree_test_erase(mt, 67167);
mtree_destroy(mt);
/*
* 9. spanning store to the end of data caused an invalid metadata
* length which resulted in a crash eventually.
* Fix by checking if there is a value in pivot before incrementing the
* metadata end in mab_mas_cp(). To ensure this doesn't happen again,
* abstract the two locations this happens into a function called
* mas_leaf_set_meta().
*/
mt_init_flags(mt, 0);
mtree_test_insert(mt, 21, (void *)0x2b);
mtree_test_insert(mt, 12, (void *)0x19);
mtree_test_insert(mt, 6, (void *)0xd);
mtree_test_insert(mt, 8, (void *)0x11);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, 91, (void *)0xb7);
mtree_test_insert(mt, 18, (void *)0x25);
mtree_test_insert(mt, 81, (void *)0xa3);
mtree_test_store_range(mt, 0, 128, (void *)0x1);
mtree_test_store(mt, 1, (void *)0x3);
mtree_test_erase(mt, 8);
mtree_test_insert(mt, 11, (void *)0x17);
mtree_test_insert(mt, 8, (void *)0x11);
mtree_test_insert(mt, 21, (void *)0x2b);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, ULONG_MAX - 10, (void *)0xffffffffffffffeb);
mtree_test_erase(mt, ULONG_MAX - 10);
mtree_test_store_range(mt, 0, 281, (void *)0x1);
mtree_test_erase(mt, 2);
mtree_test_insert(mt, 1211, (void *)0x977);
mtree_test_insert(mt, 111, (void *)0xdf);
mtree_test_insert(mt, 13, (void *)0x1b);
mtree_test_insert(mt, 211, (void *)0x1a7);
mtree_test_insert(mt, 11, (void *)0x17);
mtree_test_insert(mt, 5, (void *)0xb);
mtree_test_insert(mt, 1218, (void *)0x985);
mtree_test_insert(mt, 61, (void *)0x7b);
mtree_test_store(mt, 1, (void *)0x3);
mtree_test_insert(mt, 121, (void *)0xf3);
mtree_test_insert(mt, 8, (void *)0x11);
mtree_test_insert(mt, 21, (void *)0x2b);
mtree_test_insert(mt, 2, (void *)0x5);
mtree_test_insert(mt, ULONG_MAX - 10, (void *)0xffffffffffffffeb);
mtree_test_erase(mt, ULONG_MAX - 10);
}
/* duplicate the tree with a specific gap */
static noinline void check_dup_gaps(struct maple_tree *mt,
unsigned long nr_entries, bool zero_start,
unsigned long gap)
{
unsigned long i = 0;
struct maple_tree newmt;
int ret;
void *tmp;
MA_STATE(mas, mt, 0, 0);
MA_STATE(newmas, &newmt, 0, 0);
if (!zero_start)
i = 1;
mt_zero_nr_tallocated();
for (; i <= nr_entries; i++)
mtree_store_range(mt, i*10, (i+1)*10 - gap,
xa_mk_value(i), GFP_KERNEL);
mt_init_flags(&newmt, MT_FLAGS_ALLOC_RANGE);
mt_set_non_kernel(99999);
mas_lock(&newmas);
ret = mas_expected_entries(&newmas, nr_entries);
mt_set_non_kernel(0);
MT_BUG_ON(mt, ret != 0);
rcu_read_lock();
mas_for_each(&mas, tmp, ULONG_MAX) {
newmas.index = mas.index;
newmas.last = mas.last;
mas_store(&newmas, tmp);
}
rcu_read_unlock();
mas_destroy(&newmas);
mas_unlock(&newmas);
mtree_destroy(&newmt);
}
/* Duplicate many sizes of trees. Mainly to test expected entry values */
static noinline void check_dup(struct maple_tree *mt)
{
int i;
int big_start = 100010;
/* Check with a value at zero */
for (i = 10; i < 1000; i++) {
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_dup_gaps(mt, i, true, 5);
mtree_destroy(mt);
rcu_barrier();
}
cond_resched();
mt_cache_shrink();
/* Check with a value at zero, no gap */
for (i = 1000; i < 2000; i++) {
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_dup_gaps(mt, i, true, 0);
mtree_destroy(mt);
rcu_barrier();
}
cond_resched();
mt_cache_shrink();
/* Check with a value at zero and unreasonably large */
for (i = big_start; i < big_start + 10; i++) {
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_dup_gaps(mt, i, true, 5);
mtree_destroy(mt);
rcu_barrier();
}
cond_resched();
mt_cache_shrink();
/* Small to medium size not starting at zero*/
for (i = 200; i < 1000; i++) {
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_dup_gaps(mt, i, false, 5);
mtree_destroy(mt);
rcu_barrier();
}
cond_resched();
mt_cache_shrink();
/* Unreasonably large not starting at zero*/
for (i = big_start; i < big_start + 10; i++) {
mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
check_dup_gaps(mt, i, false, 5);
mtree_destroy(mt);
rcu_barrier();
cond_resched();
mt_cache_shrink();
}
/* Check non-allocation tree not starting at zero */
for (i = 1500; i < 3000; i++) {
mt_init_flags(mt, 0);
check_dup_gaps(mt, i, false, 5);
mtree_destroy(mt);
rcu_barrier();
cond_resched();
if (i % 2 == 0)
mt_cache_shrink();
}
mt_cache_shrink();
/* Check non-allocation tree starting at zero */
for (i = 200; i < 1000; i++) {
mt_init_flags(mt, 0);
check_dup_gaps(mt, i, true, 5);
mtree_destroy(mt);
rcu_barrier();
cond_resched();
}
mt_cache_shrink();
/* Unreasonably large */
for (i = big_start + 5; i < big_start + 10; i++) {
mt_init_flags(mt, 0);
check_dup_gaps(mt, i, true, 5);
mtree_destroy(mt);
rcu_barrier();
mt_cache_shrink();
cond_resched();
}
}
static noinline void check_bnode_min_spanning(struct maple_tree *mt)
{
int i = 50;
MA_STATE(mas, mt, 0, 0);
mt_set_non_kernel(9999);
mas_lock(&mas);
do {
mas_set_range(&mas, i*10, i*10+9);
mas_store(&mas, check_bnode_min_spanning);
} while (i--);
mas_set_range(&mas, 240, 509);
mas_store(&mas, NULL);
mas_unlock(&mas);
mas_destroy(&mas);
mt_set_non_kernel(0);
}
static noinline void check_empty_area_window(struct maple_tree *mt)
{
unsigned long i, nr_entries = 20;
MA_STATE(mas, mt, 0, 0);
for (i = 1; i <= nr_entries; i++)
mtree_store_range(mt, i*10, i*10 + 9,
xa_mk_value(i), GFP_KERNEL);
/* Create another hole besides the one at 0 */
mtree_store_range(mt, 160, 169, NULL, GFP_KERNEL);
/* Check lower bounds that don't fit */
rcu_read_lock();
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 5, 90, 10) != -EBUSY);
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 6, 90, 5) != -EBUSY);
/* Check lower bound that does fit */
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 5, 90, 5) != 0);
MT_BUG_ON(mt, mas.index != 5);
MT_BUG_ON(mt, mas.last != 9);
rcu_read_unlock();
/* Check one gap that doesn't fit and one that does */
rcu_read_lock();
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 5, 217, 9) != 0);
MT_BUG_ON(mt, mas.index != 161);
MT_BUG_ON(mt, mas.last != 169);
/* Check one gap that does fit above the min */
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 100, 218, 3) != 0);
MT_BUG_ON(mt, mas.index != 216);
MT_BUG_ON(mt, mas.last != 218);
/* Check size that doesn't fit any gap */
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 100, 218, 16) != -EBUSY);
/*
* Check size that doesn't fit the lower end of the window but
* does fit the gap
*/
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 167, 200, 4) != -EBUSY);
/*
* Check size that doesn't fit the upper end of the window but
* does fit the gap
*/
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area_rev(&mas, 100, 162, 4) != -EBUSY);
/* Check mas_empty_area forward */
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area(&mas, 0, 100, 9) != 0);
MT_BUG_ON(mt, mas.index != 0);
MT_BUG_ON(mt, mas.last != 8);
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area(&mas, 0, 100, 4) != 0);
MT_BUG_ON(mt, mas.index != 0);
MT_BUG_ON(mt, mas.last != 3);
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area(&mas, 0, 100, 11) != -EBUSY);
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area(&mas, 5, 100, 6) != -EBUSY);
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area(&mas, 0, 8, 10) != -EBUSY);
mas_reset(&mas);
mas_empty_area(&mas, 100, 165, 3);
mas_reset(&mas);
MT_BUG_ON(mt, mas_empty_area(&mas, 100, 163, 6) != -EBUSY);
rcu_read_unlock();
}
static noinline void check_empty_area_fill(struct maple_tree *mt)
{
const unsigned long max = 0x25D78000;
unsigned long size;
int loop, shift;
MA_STATE(mas, mt, 0, 0);
mt_set_non_kernel(99999);
for (shift = 12; shift <= 16; shift++) {
loop = 5000;
size = 1 << shift;
while (loop--) {
mas_set(&mas, 0);
mas_lock(&mas);
MT_BUG_ON(mt, mas_empty_area(&mas, 0, max, size) != 0);
MT_BUG_ON(mt, mas.last != mas.index + size - 1);
mas_store_gfp(&mas, (void *)size, GFP_KERNEL);
mas_unlock(&mas);
mas_reset(&mas);
}
}
/* No space left. */
size = 0x1000;
rcu_read_lock();
MT_BUG_ON(mt, mas_empty_area(&mas, 0, max, size) != -EBUSY);
rcu_read_unlock();
/* Fill a depth 3 node to the maximum */
for (unsigned long i = 629440511; i <= 629440800; i += 6)
mtree_store_range(mt, i, i + 5, (void *)i, GFP_KERNEL);
/* Make space in the second-last depth 4 node */
mtree_erase(mt, 631668735);
/* Make space in the last depth 4 node */
mtree_erase(mt, 629506047);
mas_reset(&mas);
/* Search from just after the gap in the second-last depth 4 */
rcu_read_lock();
MT_BUG_ON(mt, mas_empty_area(&mas, 629506048, 690000000, 0x5000) != 0);
rcu_read_unlock();
mt_set_non_kernel(0);
}
static DEFINE_MTREE(tree);
static int maple_tree_seed(void)
{
unsigned long set[] = {5015, 5014, 5017, 25, 1000,
1001, 1002, 1003, 1005, 0,
5003, 5002};
void *ptr = &set;
pr_info("\nTEST STARTING\n\n");
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_root_expand(&tree);
mtree_destroy(&tree);
#if defined(BENCH_SLOT_STORE)
#define BENCH
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
bench_slot_store(&tree);
mtree_destroy(&tree);
goto skip;
#endif
#if defined(BENCH_NODE_STORE)
#define BENCH
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
bench_node_store(&tree);
mtree_destroy(&tree);
goto skip;
#endif
#if defined(BENCH_AWALK)
#define BENCH
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
bench_awalk(&tree);
mtree_destroy(&tree);
goto skip;
#endif
#if defined(BENCH_WALK)
#define BENCH
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
bench_walk(&tree);
mtree_destroy(&tree);
goto skip;
#endif
#if defined(BENCH_FORK)
#define BENCH
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
bench_forking(&tree);
mtree_destroy(&tree);
goto skip;
#endif
#if defined(BENCH_MT_FOR_EACH)
#define BENCH
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
bench_mt_for_each(&tree);
mtree_destroy(&tree);
goto skip;
#endif
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_iteration(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_forking(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_mas_store_gfp(&tree);
mtree_destroy(&tree);
/* Test ranges (store and insert) */
mt_init_flags(&tree, 0);
check_ranges(&tree);
mtree_destroy(&tree);
#if defined(CONFIG_64BIT)
/* These tests have ranges outside of 4GB */
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_alloc_range(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_alloc_rev_range(&tree);
mtree_destroy(&tree);
#endif
mt_init_flags(&tree, 0);
check_load(&tree, set[0], NULL); /* See if 5015 -> NULL */
check_insert(&tree, set[9], &tree); /* Insert 0 */
check_load(&tree, set[9], &tree); /* See if 0 -> &tree */
check_load(&tree, set[0], NULL); /* See if 5015 -> NULL */
check_insert(&tree, set[10], ptr); /* Insert 5003 */
check_load(&tree, set[9], &tree); /* See if 0 -> &tree */
check_load(&tree, set[11], NULL); /* See if 5002 -> NULL */
check_load(&tree, set[10], ptr); /* See if 5003 -> ptr */
/* Clear out the tree */
mtree_destroy(&tree);
/* Try to insert, insert a dup, and load back what was inserted. */
mt_init_flags(&tree, 0);
check_insert(&tree, set[0], &tree); /* Insert 5015 */
check_dup_insert(&tree, set[0], &tree); /* Insert 5015 again */
check_load(&tree, set[0], &tree); /* See if 5015 -> &tree */
/*
* Second set of tests try to load a value that doesn't exist, inserts
* a second value, then loads the value again
*/
check_load(&tree, set[1], NULL); /* See if 5014 -> NULL */
check_insert(&tree, set[1], ptr); /* insert 5014 -> ptr */
check_load(&tree, set[1], ptr); /* See if 5014 -> ptr */
check_load(&tree, set[0], &tree); /* See if 5015 -> &tree */
/*
* Tree currently contains:
* p[0]: 14 -> (nil) p[1]: 15 -> ptr p[2]: 16 -> &tree p[3]: 0 -> (nil)
*/
check_insert(&tree, set[6], ptr); /* insert 1002 -> ptr */
check_insert(&tree, set[7], &tree); /* insert 1003 -> &tree */
check_load(&tree, set[0], &tree); /* See if 5015 -> &tree */
check_load(&tree, set[1], ptr); /* See if 5014 -> ptr */
check_load(&tree, set[6], ptr); /* See if 1002 -> ptr */
check_load(&tree, set[7], &tree); /* 1003 = &tree ? */
/* Clear out tree */
mtree_destroy(&tree);
mt_init_flags(&tree, 0);
/* Test inserting into a NULL hole. */
check_insert(&tree, set[5], ptr); /* insert 1001 -> ptr */
check_insert(&tree, set[7], &tree); /* insert 1003 -> &tree */
check_insert(&tree, set[6], ptr); /* insert 1002 -> ptr */
check_load(&tree, set[5], ptr); /* See if 1001 -> ptr */
check_load(&tree, set[6], ptr); /* See if 1002 -> ptr */
check_load(&tree, set[7], &tree); /* See if 1003 -> &tree */
/* Clear out the tree */
mtree_destroy(&tree);
mt_init_flags(&tree, 0);
/*
* set[] = {5015, 5014, 5017, 25, 1000,
* 1001, 1002, 1003, 1005, 0,
* 5003, 5002};
*/
check_insert(&tree, set[0], ptr); /* 5015 */
check_insert(&tree, set[1], &tree); /* 5014 */
check_insert(&tree, set[2], ptr); /* 5017 */
check_insert(&tree, set[3], &tree); /* 25 */
check_load(&tree, set[0], ptr);
check_load(&tree, set[1], &tree);
check_load(&tree, set[2], ptr);
check_load(&tree, set[3], &tree);
check_insert(&tree, set[4], ptr); /* 1000 < Should split. */
check_load(&tree, set[0], ptr);
check_load(&tree, set[1], &tree);
check_load(&tree, set[2], ptr);
check_load(&tree, set[3], &tree); /*25 */
check_load(&tree, set[4], ptr);
check_insert(&tree, set[5], &tree); /* 1001 */
check_load(&tree, set[0], ptr);
check_load(&tree, set[1], &tree);
check_load(&tree, set[2], ptr);
check_load(&tree, set[3], &tree);
check_load(&tree, set[4], ptr);
check_load(&tree, set[5], &tree);
check_insert(&tree, set[6], ptr);
check_load(&tree, set[0], ptr);
check_load(&tree, set[1], &tree);
check_load(&tree, set[2], ptr);
check_load(&tree, set[3], &tree);
check_load(&tree, set[4], ptr);
check_load(&tree, set[5], &tree);
check_load(&tree, set[6], ptr);
check_insert(&tree, set[7], &tree);
check_load(&tree, set[0], ptr);
check_insert(&tree, set[8], ptr);
check_insert(&tree, set[9], &tree);
check_load(&tree, set[0], ptr);
check_load(&tree, set[1], &tree);
check_load(&tree, set[2], ptr);
check_load(&tree, set[3], &tree);
check_load(&tree, set[4], ptr);
check_load(&tree, set[5], &tree);
check_load(&tree, set[6], ptr);
check_load(&tree, set[9], &tree);
mtree_destroy(&tree);
mt_init_flags(&tree, 0);
check_seq(&tree, 16, false);
mtree_destroy(&tree);
mt_init_flags(&tree, 0);
check_seq(&tree, 1000, true);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_rev_seq(&tree, 1000, true);
mtree_destroy(&tree);
check_lower_bound_split(&tree);
check_upper_bound_split(&tree);
check_mid_split(&tree);
mt_init_flags(&tree, 0);
check_next_entry(&tree);
check_find(&tree);
check_find_2(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_prev_entry(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_gap_combining(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_node_overwrite(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
next_prev_test(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_spanning_relatives(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_rev_find(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, 0);
check_fuzzer(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_dup(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_bnode_min_spanning(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_empty_area_window(&tree);
mtree_destroy(&tree);
mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
check_empty_area_fill(&tree);
mtree_destroy(&tree);
#if defined(BENCH)
skip:
#endif
rcu_barrier();
pr_info("maple_tree: %u of %u tests passed\n",
atomic_read(&maple_tree_tests_passed),
atomic_read(&maple_tree_tests_run));
if (atomic_read(&maple_tree_tests_run) ==
atomic_read(&maple_tree_tests_passed))
return 0;
return -EINVAL;
}
static void maple_tree_harvest(void)
{
}
module_init(maple_tree_seed);
module_exit(maple_tree_harvest);
MODULE_AUTHOR("Liam R. Howlett <Liam.Howlett@Oracle.com>");
MODULE_LICENSE("GPL");
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