128 lines
2.7 KiB
C
128 lines
2.7 KiB
C
/*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Copyright (c) 2019 Cyril Hrubis <chrubis@suse.cz>
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*/
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/*
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* We are testing mbind() MPOL_MF_MOVE and MPOL_MF_MOVE_ALL.
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*
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* If one of these flags is passed along with the policy kernel attempts to
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* move already faulted pages to match the requested policy.
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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_H
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# include <numa.h>
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# include <numaif.h>
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# include "mbind.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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static size_t page_size;
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static struct tst_nodemap *nodes;
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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 * 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_policy(int mode, unsigned flag)
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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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void *ptr;
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unsigned long size = page_size;
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unsigned int node = 0;
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ptr = tst_numa_map(NULL, size);
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tst_nodemap_reset_counters(nodes);
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tst_numa_fault(ptr, size);
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tst_nodemap_count_pages(nodes, ptr, 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->counters[i]) {
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node = nodes->map[i];
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tst_res(TINFO, "Attempting to move to node %i", node);
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numa_bitmask_setbit(bm, node);
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break;
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}
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}
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TEST(mbind(ptr, size, mode, bm->maskp, bm->size + 1, flag));
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if (TST_RET) {
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tst_res(TFAIL | TTERRNO,
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"mbind(%s, %s) node %u",
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tst_numa_mode_name(mode), mbind_flag_name(flag), node);
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goto exit;
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} else {
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tst_res(TPASS, "mbind(%s, %s) node %u succeded",
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tst_numa_mode_name(mode), mbind_flag_name(flag), node);
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}
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tst_nodemap_reset_counters(nodes);
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tst_nodemap_count_pages(nodes, ptr, size);
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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] == 1) {
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tst_res(TPASS, "Node %u allocated %u", node, 1);
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} else {
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tst_res(TFAIL, "Node %u allocated %u, expected %u",
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node, nodes->counters[i], 0);
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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, "Node %u allocated %u, expected 0",
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i, nodes->counters[i]);
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}
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}
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exit:
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tst_numa_unmap(ptr, size);
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numa_free_nodemask(bm);
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}
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static const int modes[] = {
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MPOL_PREFERRED,
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MPOL_BIND,
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MPOL_INTERLEAVE,
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};
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static void verify_mbind(unsigned int n)
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{
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verify_policy(modes[n], MPOL_MF_MOVE);
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verify_policy(modes[n], MPOL_MF_MOVE_ALL);
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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_mbind,
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.tcnt = ARRAY_SIZE(modes),
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.needs_root = 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_H */
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