121 lines
2.5 KiB
C
121 lines
2.5 KiB
C
/*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Copyright (c) 2018 Cyril Hrubis <chrubis@suse.cz>
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*/
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/*
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* We are testing set_mempolicy() with MPOL_BIND and MPOL_PREFERRED.
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*
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* For each node with memory we set its bit in nodemask with set_mempolicy()
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* and verify that memory has been allocated accordingly.
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*/
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#include <errno.h>
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#include "config.h"
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#ifdef HAVE_NUMA_V2
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# include <numa.h>
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# include <numaif.h>
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#endif
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#include "tst_test.h"
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#include "tst_numa.h"
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#ifdef HAVE_NUMA_V2
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#include "set_mempolicy.h"
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static size_t page_size;
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static struct tst_nodemap *nodes;
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#define PAGES_ALLOCATED 16u
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static void setup(void)
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{
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page_size = getpagesize();
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nodes = tst_get_nodemap(TST_NUMA_MEM, 2 * PAGES_ALLOCATED * page_size / 1024);
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if (nodes->cnt <= 1)
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tst_brk(TCONF, "Test requires at least two NUMA memory nodes");
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}
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static void cleanup(void)
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{
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tst_nodemap_free(nodes);
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}
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static void verify_mempolicy(unsigned int node, int mode)
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{
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struct bitmask *bm = numa_allocate_nodemask();
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unsigned int i;
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numa_bitmask_setbit(bm, node);
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TEST(set_mempolicy(mode, bm->maskp, bm->size+1));
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if (TST_RET) {
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tst_res(TFAIL | TTERRNO,
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"set_mempolicy(%s) node %u",
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tst_numa_mode_name(mode), node);
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return;
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}
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tst_res(TPASS, "set_mempolicy(%s) node %u",
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tst_numa_mode_name(mode), node);
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numa_free_nodemask(bm);
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const char *prefix = "child: ";
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if (SAFE_FORK()) {
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prefix = "parent: ";
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tst_reap_children();
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}
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tst_nodemap_reset_counters(nodes);
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alloc_fault_count(nodes, NULL, PAGES_ALLOCATED * page_size);
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tst_nodemap_print_counters(nodes);
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for (i = 0; i < nodes->cnt; i++) {
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if (nodes->map[i] == node) {
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if (nodes->counters[i] == PAGES_ALLOCATED) {
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tst_res(TPASS, "%sNode %u allocated %u",
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prefix, node, PAGES_ALLOCATED);
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} else {
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tst_res(TFAIL, "%sNode %u allocated %u, expected %u",
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prefix, node, nodes->counters[i],
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PAGES_ALLOCATED);
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}
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continue;
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}
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if (nodes->counters[i]) {
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tst_res(TFAIL, "%sNode %u allocated %u, expected 0",
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prefix, i, nodes->counters[i]);
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}
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}
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}
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static void verify_set_mempolicy(unsigned int n)
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{
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unsigned int i;
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int mode = n ? MPOL_PREFERRED : MPOL_BIND;
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for (i = 0; i < nodes->cnt; i++)
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verify_mempolicy(nodes->map[i], mode);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.test = verify_set_mempolicy,
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.tcnt = 2,
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.forks_child = 1,
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.needs_checkpoints = 1,
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};
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#else
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TST_TEST_TCONF(NUMA_ERROR_MSG);
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#endif /* HAVE_NUMA_V2 */
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