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zdtm: maps05 -- Test a flood of small VMAs

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Here we test a big number of small VMAs to survive c/r. The main
idea is to use a big number of IOVs needed for page transferring.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov 2014-05-07 22:20:29 +04:00 committed by Pavel Emelyanov
parent d8e5f617b5
commit ebd2e88c9a
3 changed files with 93 additions and 0 deletions
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1
test/zdtm.sh
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@ -12,6 +12,7 @@ static/maps00
static/maps01
static/maps02
static/maps04
static/maps05
static/maps_file_prot
static/mprotect00
static/mtime_mmap

1
test/zdtm/live/static/Makefile
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@ -66,6 +66,7 @@ TST_NOFILE = \
maps02 \
maps03 \
maps04 \
maps05 \
xids00 \
groups \
file_fown \

91
test/zdtm/live/static/maps05.c Normal file
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@ -0,0 +1,91 @@
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <sys/mman.h>
#include <setjmp.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "zdtmtst.h"
const char *test_doc = "Create a bunch of small VMAs and test they survive transferring\n";
const char *test_author = "Cyrill Gorcunov <gorcunov@openvz.org>";
#define NR_MAPS 4096
#define NR_MAPS_1 (NR_MAPS + 0)
#define NR_MAPS_2 (NR_MAPS + 1)
#define MAPS_SIZE_1 (140 << 10)
#define MAPS_SIZE_2 (8192)
int main(int argc, char *argv[])
{
void *map[NR_MAPS + 2] = { }, *addr;
size_t i, summary;
test_init(argc, argv);
summary = NR_MAPS * 2 * 4096 + MAPS_SIZE_1 + MAPS_SIZE_2 + (1 << 20);
addr = mmap(NULL, summary, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
if (addr == MAP_FAILED) {
err("Can't mmap");
return 1;
}
munmap(addr, summary);
for (i = 0; i < NR_MAPS; i++) {
map[i] = mmap(i > 0 ? map[i - 1] + 8192 : addr, 4096, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
if (map[i] == MAP_FAILED) {
err("Can't mmap");
return 1;
} else {
/* Dirtify it */
int *v = (void *)map[i];
*v = i;
}
}
map[NR_MAPS_1] = mmap(map[NR_MAPS_1 - 1] + 8192, MAPS_SIZE_1, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_ANONYMOUS | MAP_PRIVATE | MAP_GROWSDOWN, -1, 0);
if (map[NR_MAPS_1] == MAP_FAILED) {
err("Can't mmap");
return 1;
} else {
/* Dirtify it */
int *v = (void *)map[NR_MAPS_1];
*v = i;
test_msg("map-1: %p %p\n", map[NR_MAPS_1], map[NR_MAPS_1] + MAPS_SIZE_1);
}
map[NR_MAPS_2] = mmap(map[NR_MAPS_1] + MAPS_SIZE_1, MAPS_SIZE_2, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE | MAP_GROWSDOWN, -1, 0);
if (map[NR_MAPS_2] == MAP_FAILED) {
err("Can't mmap");
return 1;
} else {
/* Dirtify it */
int *v = (void *)map[NR_MAPS_2];
*v = i;
test_msg("map-2: %p %p\n", map[NR_MAPS_2], map[NR_MAPS_2] + MAPS_SIZE_2);
}
test_daemon();
test_waitsig();
for (i = 0; i < NR_MAPS; i++) {
int *v = (void *)map[i];
if (*v != i) {
fail("Data corrupted at page %lu", (unsigned long)i);
return 1;
}
}
pass();
return 0;
}