1 /*
2 * Copyright (C) 2017 Red Hat, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
13 */
14
15 /*
16 * Parse the ksm0* test options in funcion parse_ksm_options().
17 */
18
19 #include "tst_test.h"
20
21 int merge_across_nodes;
22
23 int size = 128, num = 3, unit = 1;
24 char *opt_sizestr, *opt_numstr, *opt_unitstr;
25
26 struct tst_option ksm_options[] = {
27 {"n:", &opt_numstr, "-n Number of processes"},
28 {"s:", &opt_sizestr, "-s Memory allocation size in MB"},
29 {"u:", &opt_unitstr, "-u Memory allocation unit in MB"},
30 {NULL, NULL, NULL}
31 };
32
parse_ksm_options(char * str_size,int * size,char * str_num,int * num,char * str_unit,int * unit)33 static inline void parse_ksm_options(char *str_size, int *size,
34 char *str_num, int *num, char *str_unit, int *unit)
35 {
36 if(tst_parse_int(str_size, size, 1, INT_MAX))
37 tst_brk(TBROK, "Invalid size '%s'", str_size);
38
39 if(tst_parse_int(str_num, num, 3, INT_MAX))
40 tst_brk(TBROK, "Invalid num '%s'", str_num);
41
42 if(tst_parse_int(str_unit, unit, 1, *size))
43 tst_brk(TBROK, "Invalid unit '%s'", str_unit);
44 if (*size % *unit != 0)
45 tst_brk(TBROK,
46 "the remainder of division of size by unit is "
47 "not zero.");
48 }
49
50 static const char * const save_restore[] = {
51 "?/sys/kernel/mm/ksm/max_page_sharing",
52 NULL,
53 };
54