mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 17:26:41 +07:00
73bc029b76
Make the output of radix tree test suite less verbose by default and add -v and -vv command line options for increasing level of verbosity. Signed-off-by: Rehas Sachdeva <aquannie@gmail.com> Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/*
|
|
* Regression3
|
|
* Description:
|
|
* Helper radix_tree_iter_retry resets next_index to the current index.
|
|
* In following radix_tree_next_slot current chunk size becomes zero.
|
|
* This isn't checked and it tries to dereference null pointer in slot.
|
|
*
|
|
* Helper radix_tree_iter_resume reset slot to NULL and next_index to index + 1,
|
|
* for tagger iteraction it also must reset cached tags in iterator to abort
|
|
* next radix_tree_next_slot and go to slow-path into radix_tree_next_chunk.
|
|
*
|
|
* Running:
|
|
* This test should run to completion immediately. The above bug would
|
|
* cause it to segfault.
|
|
*
|
|
* Upstream commit:
|
|
* Not yet
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/gfp.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/radix-tree.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#include "regression.h"
|
|
|
|
void regression3_test(void)
|
|
{
|
|
RADIX_TREE(root, GFP_KERNEL);
|
|
void *ptr0 = (void *)4ul;
|
|
void *ptr = (void *)8ul;
|
|
struct radix_tree_iter iter;
|
|
void **slot;
|
|
bool first;
|
|
|
|
printv(1, "running regression test 3 (should take milliseconds)\n");
|
|
|
|
radix_tree_insert(&root, 0, ptr0);
|
|
radix_tree_tag_set(&root, 0, 0);
|
|
|
|
first = true;
|
|
radix_tree_for_each_tagged(slot, &root, &iter, 0, 0) {
|
|
printv(2, "tagged %ld %p\n", iter.index, *slot);
|
|
if (first) {
|
|
radix_tree_insert(&root, 1, ptr);
|
|
radix_tree_tag_set(&root, 1, 0);
|
|
first = false;
|
|
}
|
|
if (radix_tree_deref_retry(*slot)) {
|
|
printv(2, "retry at %ld\n", iter.index);
|
|
slot = radix_tree_iter_retry(&iter);
|
|
continue;
|
|
}
|
|
}
|
|
radix_tree_delete(&root, 1);
|
|
|
|
first = true;
|
|
radix_tree_for_each_slot(slot, &root, &iter, 0) {
|
|
printv(2, "slot %ld %p\n", iter.index, *slot);
|
|
if (first) {
|
|
radix_tree_insert(&root, 1, ptr);
|
|
first = false;
|
|
}
|
|
if (radix_tree_deref_retry(*slot)) {
|
|
printv(2, "retry at %ld\n", iter.index);
|
|
slot = radix_tree_iter_retry(&iter);
|
|
continue;
|
|
}
|
|
}
|
|
radix_tree_delete(&root, 1);
|
|
|
|
first = true;
|
|
radix_tree_for_each_contig(slot, &root, &iter, 0) {
|
|
printv(2, "contig %ld %p\n", iter.index, *slot);
|
|
if (first) {
|
|
radix_tree_insert(&root, 1, ptr);
|
|
first = false;
|
|
}
|
|
if (radix_tree_deref_retry(*slot)) {
|
|
printv(2, "retry at %ld\n", iter.index);
|
|
slot = radix_tree_iter_retry(&iter);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
radix_tree_for_each_slot(slot, &root, &iter, 0) {
|
|
printv(2, "slot %ld %p\n", iter.index, *slot);
|
|
if (!iter.index) {
|
|
printv(2, "next at %ld\n", iter.index);
|
|
slot = radix_tree_iter_resume(slot, &iter);
|
|
}
|
|
}
|
|
|
|
radix_tree_for_each_contig(slot, &root, &iter, 0) {
|
|
printv(2, "contig %ld %p\n", iter.index, *slot);
|
|
if (!iter.index) {
|
|
printv(2, "next at %ld\n", iter.index);
|
|
slot = radix_tree_iter_resume(slot, &iter);
|
|
}
|
|
}
|
|
|
|
radix_tree_tag_set(&root, 0, 0);
|
|
radix_tree_tag_set(&root, 1, 0);
|
|
radix_tree_for_each_tagged(slot, &root, &iter, 0, 0) {
|
|
printv(2, "tagged %ld %p\n", iter.index, *slot);
|
|
if (!iter.index) {
|
|
printv(2, "next at %ld\n", iter.index);
|
|
slot = radix_tree_iter_resume(slot, &iter);
|
|
}
|
|
}
|
|
|
|
radix_tree_delete(&root, 0);
|
|
radix_tree_delete(&root, 1);
|
|
|
|
printv(1, "regression test 3 passed\n");
|
|
}
|