android13/external/ltp/testcases/kernel/syscalls/set_mempolicy/set_mempolicy03.c

114 lines
2.3 KiB
C

/*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* Copyright (c) 2018 Cyril Hrubis <chrubis@suse.cz>
*/
/*
* We are testing set_mempolicy() with MPOL_BIND and MPOL_PREFERRED backed by a
* file on each supported filesystem.
*/
#include <errno.h>
#include "config.h"
#ifdef HAVE_NUMA_V2
# include <numaif.h>
# include <numa.h>
#endif
#include "tst_test.h"
#include "tst_numa.h"
#define MNTPOINT "mntpoint"
#define PAGES_ALLOCATED 16u
#ifdef HAVE_NUMA_V2
#include "set_mempolicy.h"
static size_t page_size;
static struct tst_nodemap *nodes;
static void setup(void)
{
page_size = getpagesize();
nodes = tst_get_nodemap(TST_NUMA_MEM, 2 * PAGES_ALLOCATED * page_size / 1024);
if (nodes->cnt <= 1)
tst_brk(TCONF, "Test requires at least two NUMA memory nodes");
}
static void cleanup(void)
{
tst_nodemap_free(nodes);
}
static void verify_mempolicy(unsigned int node, int mode)
{
struct bitmask *bm = numa_allocate_nodemask();
unsigned int i;
numa_bitmask_setbit(bm, node);
TEST(set_mempolicy(mode, bm->maskp, bm->size+1));
if (TST_RET) {
tst_res(TFAIL | TTERRNO,
"set_mempolicy(%s) node %u",
tst_numa_mode_name(mode), node);
return;
}
tst_res(TPASS, "set_mempolicy(%s) node %u",
tst_numa_mode_name(mode), node);
numa_free_nodemask(bm);
tst_nodemap_reset_counters(nodes);
alloc_fault_count(nodes, MNTPOINT "/numa-test-file", PAGES_ALLOCATED * page_size);
for (i = 0; i < nodes->cnt; i++) {
if (nodes->map[i] == node) {
if (nodes->counters[i] == PAGES_ALLOCATED) {
tst_res(TPASS, "Node %u allocated %u",
node, PAGES_ALLOCATED);
} else {
tst_res(TFAIL, "Node %u allocated %u, expected %u",
node, nodes->counters[i], PAGES_ALLOCATED);
}
continue;
}
if (nodes->counters[i]) {
tst_res(TFAIL, "Node %u allocated %u, expected 0",
node, nodes->counters[i]);
}
}
}
static void verify_set_mempolicy(unsigned int n)
{
unsigned int i;
int mode = n ? MPOL_PREFERRED : MPOL_BIND;
for (i = 0; i < nodes->cnt; i++)
verify_mempolicy(nodes->map[i], mode);
}
static struct tst_test test = {
.setup = setup,
.cleanup = cleanup,
.test = verify_set_mempolicy,
.tcnt = 2,
.needs_root = 1,
.all_filesystems = 1,
.mntpoint = MNTPOINT,
.forks_child = 1,
.needs_checkpoints = 1,
};
#else
TST_TEST_TCONF(NUMA_ERROR_MSG);
#endif /* HAVE_NUMA_V2 */