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make allmodconfig && make W=1 C=1 reports for lib/test_*.ko: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hexdump.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_dhry.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_firmware.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_sysctl.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hash.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ida.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_list_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_min_heap.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_module.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_keys.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_key_base.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_memcat_p.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_blackhole_dev.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_meminit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_free_pages.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_kprobes.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ref_tracker.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bits.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240619-md-lib-test-v2-1-301e30eeba1e@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
231 lines
5.5 KiB
C
231 lines
5.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#define pr_fmt(fmt) "min_heap_test: " fmt
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/*
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* Test cases for the min max heap.
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*/
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#include <linux/log2.h>
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#include <linux/min_heap.h>
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#include <linux/module.h>
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#include <linux/printk.h>
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#include <linux/random.h>
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DEFINE_MIN_HEAP(int, min_heap_test);
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static __init bool less_than(const void *lhs, const void *rhs, void __always_unused *args)
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{
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return *(int *)lhs < *(int *)rhs;
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}
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static __init bool greater_than(const void *lhs, const void *rhs, void __always_unused *args)
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{
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return *(int *)lhs > *(int *)rhs;
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}
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static __init void swap_ints(void *lhs, void *rhs, void __always_unused *args)
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{
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int temp = *(int *)lhs;
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*(int *)lhs = *(int *)rhs;
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*(int *)rhs = temp;
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}
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static __init int pop_verify_heap(bool min_heap,
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struct min_heap_test *heap,
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const struct min_heap_callbacks *funcs)
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{
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int *values = heap->data;
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int err = 0;
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int last;
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last = values[0];
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min_heap_pop(heap, funcs, NULL);
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while (heap->nr > 0) {
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if (min_heap) {
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if (last > values[0]) {
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pr_err("error: expected %d <= %d\n", last,
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values[0]);
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err++;
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}
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} else {
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if (last < values[0]) {
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pr_err("error: expected %d >= %d\n", last,
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values[0]);
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err++;
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}
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}
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last = values[0];
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min_heap_pop(heap, funcs, NULL);
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}
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return err;
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}
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static __init int test_heapify_all(bool min_heap)
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{
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int values[] = { 3, 1, 2, 4, 0x8000000, 0x7FFFFFF, 0,
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-3, -1, -2, -4, 0x8000000, 0x7FFFFFF };
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struct min_heap_test heap = {
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.data = values,
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.nr = ARRAY_SIZE(values),
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.size = ARRAY_SIZE(values),
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};
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struct min_heap_callbacks funcs = {
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.less = min_heap ? less_than : greater_than,
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.swp = swap_ints,
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};
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int i, err;
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/* Test with known set of values. */
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min_heapify_all(&heap, &funcs, NULL);
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err = pop_verify_heap(min_heap, &heap, &funcs);
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/* Test with randomly generated values. */
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heap.nr = ARRAY_SIZE(values);
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for (i = 0; i < heap.nr; i++)
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values[i] = get_random_u32();
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min_heapify_all(&heap, &funcs, NULL);
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err += pop_verify_heap(min_heap, &heap, &funcs);
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return err;
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}
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static __init int test_heap_push(bool min_heap)
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{
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const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
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-3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
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int values[ARRAY_SIZE(data)];
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struct min_heap_test heap = {
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.data = values,
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.nr = 0,
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.size = ARRAY_SIZE(values),
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};
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struct min_heap_callbacks funcs = {
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.less = min_heap ? less_than : greater_than,
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.swp = swap_ints,
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};
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int i, temp, err;
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/* Test with known set of values copied from data. */
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for (i = 0; i < ARRAY_SIZE(data); i++)
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min_heap_push(&heap, &data[i], &funcs, NULL);
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err = pop_verify_heap(min_heap, &heap, &funcs);
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/* Test with randomly generated values. */
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while (heap.nr < heap.size) {
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temp = get_random_u32();
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min_heap_push(&heap, &temp, &funcs, NULL);
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}
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err += pop_verify_heap(min_heap, &heap, &funcs);
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return err;
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}
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static __init int test_heap_pop_push(bool min_heap)
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{
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const int data[] = { 3, 1, 2, 4, 0x80000000, 0x7FFFFFFF, 0,
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-3, -1, -2, -4, 0x80000000, 0x7FFFFFFF };
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int values[ARRAY_SIZE(data)];
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struct min_heap_test heap = {
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.data = values,
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.nr = 0,
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.size = ARRAY_SIZE(values),
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};
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struct min_heap_callbacks funcs = {
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.less = min_heap ? less_than : greater_than,
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.swp = swap_ints,
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};
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int i, temp, err;
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/* Fill values with data to pop and replace. */
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temp = min_heap ? 0x80000000 : 0x7FFFFFFF;
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for (i = 0; i < ARRAY_SIZE(data); i++)
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min_heap_push(&heap, &temp, &funcs, NULL);
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/* Test with known set of values copied from data. */
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for (i = 0; i < ARRAY_SIZE(data); i++)
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min_heap_pop_push(&heap, &data[i], &funcs, NULL);
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err = pop_verify_heap(min_heap, &heap, &funcs);
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heap.nr = 0;
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for (i = 0; i < ARRAY_SIZE(data); i++)
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min_heap_push(&heap, &temp, &funcs, NULL);
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/* Test with randomly generated values. */
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for (i = 0; i < ARRAY_SIZE(data); i++) {
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temp = get_random_u32();
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min_heap_pop_push(&heap, &temp, &funcs, NULL);
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}
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err += pop_verify_heap(min_heap, &heap, &funcs);
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return err;
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}
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static __init int test_heap_del(bool min_heap)
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{
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int values[] = { 3, 1, 2, 4, 0x8000000, 0x7FFFFFF, 0,
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-3, -1, -2, -4, 0x8000000, 0x7FFFFFF };
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struct min_heap_test heap;
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min_heap_init(&heap, values, ARRAY_SIZE(values));
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heap.nr = ARRAY_SIZE(values);
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struct min_heap_callbacks funcs = {
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.less = min_heap ? less_than : greater_than,
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.swp = swap_ints,
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};
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int i, err;
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/* Test with known set of values. */
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min_heapify_all(&heap, &funcs, NULL);
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for (i = 0; i < ARRAY_SIZE(values) / 2; i++)
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min_heap_del(&heap, get_random_u32() % heap.nr, &funcs, NULL);
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err = pop_verify_heap(min_heap, &heap, &funcs);
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/* Test with randomly generated values. */
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heap.nr = ARRAY_SIZE(values);
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for (i = 0; i < heap.nr; i++)
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values[i] = get_random_u32();
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min_heapify_all(&heap, &funcs, NULL);
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for (i = 0; i < ARRAY_SIZE(values) / 2; i++)
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min_heap_del(&heap, get_random_u32() % heap.nr, &funcs, NULL);
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err += pop_verify_heap(min_heap, &heap, &funcs);
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return err;
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}
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static int __init test_min_heap_init(void)
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{
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int err = 0;
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err += test_heapify_all(true);
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err += test_heapify_all(false);
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err += test_heap_push(true);
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err += test_heap_push(false);
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err += test_heap_pop_push(true);
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err += test_heap_pop_push(false);
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err += test_heap_del(true);
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err += test_heap_del(false);
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if (err) {
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pr_err("test failed with %d errors\n", err);
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return -EINVAL;
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}
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pr_info("test passed\n");
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return 0;
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}
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module_init(test_min_heap_init);
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static void __exit test_min_heap_exit(void)
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{
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/* do nothing */
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}
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module_exit(test_min_heap_exit);
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MODULE_DESCRIPTION("Test cases for the min max heap");
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MODULE_LICENSE("GPL");
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