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      1 /*
      2  *   Copyright (c) 2008 Vijay Kumar B. <vijaykumar (at) bravegnu.org>
      3  *
      4  *   Based on testcases/kernel/syscalls/waitpid/waitpid01.c
      5  *   Original copyright message:
      6  *
      7  *   Copyright (c) International Business Machines  Corp., 2001
      8  *
      9  *   This program is free software;  you can redistribute it and/or modify
     10  *   it under the terms of the GNU General Public License as published by
     11  *   the Free Software Foundation; either version 2 of the License, or
     12  *   (at your option) any later version.
     13  *
     14  *   This program is distributed in the hope that it will be useful,
     15  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
     16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
     17  *   the GNU General Public License for more details.
     18  *
     19  *   You should have received a copy of the GNU General Public License
     20  *   along with this program;  if not, write to the Free Software
     21  *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     22  */
     23 
     24 /*
     25  * NAME
     26  *	move_pages08.c
     27  *
     28  * DESCRIPTION
     29  *      Failure when the no. of pages is ULONG_MAX.
     30  *
     31  * ALGORITHM
     32  *
     33  *      1. Pass ULONG_MAX pages to move_pages().
     34  *      2. Check if errno is set to E2BIG.
     35  *
     36  * USAGE:  <for command-line>
     37  *      move_pages08 [-c n] [-i n] [-I x] [-P x] [-t]
     38  *      where,  -c n : Run n copies concurrently.
     39  *              -i n : Execute test n times.
     40  *              -I x : Execute test for x seconds.
     41  *              -P x : Pause for x seconds between iterations.
     42  *              -t   : Turn on syscall timing.
     43  *
     44  * History
     45  *	05/2008 Vijay Kumar
     46  *		Initial Version.
     47  *
     48  * Restrictions
     49  *	kernel < 2.6.29
     50  */
     51 
     52 #include <sys/mman.h>
     53 #include <sys/types.h>
     54 #include <sys/wait.h>
     55 #include <unistd.h>
     56 #include <errno.h>
     57 #include "test.h"
     58 #include "move_pages_support.h"
     59 
     60 #define TEST_PAGES 2
     61 #define TEST_NODES 2
     62 
     63 static void setup(void);
     64 static void cleanup(void);
     65 
     66 char *TCID = "move_pages08";
     67 int TST_TOTAL = 1;
     68 
     69 int main(int argc, char **argv)
     70 {
     71 
     72 	tst_parse_opts(argc, argv, NULL, NULL);
     73 
     74 	setup();
     75 
     76 #if HAVE_NUMA_MOVE_PAGES
     77 	unsigned int i;
     78 	int lc;
     79 	unsigned int from_node;
     80 	unsigned int to_node;
     81 	int ret;
     82 
     83 	ret = get_allowed_nodes(NH_MEMS, 2, &from_node, &to_node);
     84 	if (ret < 0)
     85 		tst_brkm(TBROK | TERRNO, cleanup, "get_allowed_nodes: %d", ret);
     86 
     87 	/* check for looping state if -i option is given */
     88 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     89 		void *pages[TEST_PAGES] = { 0 };
     90 		int nodes[TEST_PAGES];
     91 		int status[TEST_PAGES];
     92 
     93 		/* reset tst_count in case we are looping */
     94 		tst_count = 0;
     95 
     96 		ret = alloc_pages_on_node(pages, TEST_PAGES, from_node);
     97 		if (ret == -1)
     98 			continue;
     99 
    100 		for (i = 0; i < TEST_PAGES; i++)
    101 			nodes[i] = to_node;
    102 
    103 		ret = numa_move_pages(0, ULONG_MAX, pages, nodes,
    104 				      status, MPOL_MF_MOVE);
    105 		if (ret == -1 && errno == E2BIG)
    106 			tst_resm(TPASS, "move_pages failed with "
    107 				 "E2BIG as expected");
    108 		else
    109 			tst_resm(TFAIL|TERRNO, "move pages did not fail "
    110 				 "with E2BIG ret: %d", ret);
    111 
    112 		free_pages(pages, TEST_PAGES);
    113 	}
    114 #else
    115 	tst_resm(TCONF, "move_pages support not found.");
    116 #endif
    117 
    118 	cleanup();
    119 	tst_exit();
    120 
    121 }
    122 
    123 /*
    124  * setup() - performs all ONE TIME setup for this test
    125  */
    126 static void setup(void)
    127 {
    128 	/*
    129 	 * commit 3140a2273009c01c27d316f35ab76a37e105fdd8
    130 	 * Author: Brice Goglin <Brice.Goglin (at) inria.fr>
    131 	 * Date:   Tue Jan 6 14:38:57 2009 -0800
    132 	 *     mm: rework do_pages_move() to work on page_sized chunks
    133 	 *
    134 	 * reworked do_pages_move() to work by page-sized chunks and removed E2BIG
    135 	 */
    136 	if ((tst_kvercmp(2, 6, 29)) >= 0)
    137 		tst_brkm(TCONF, NULL, "move_pages: E2BIG was removed in "
    138 			 "commit 3140a227");
    139 
    140 	tst_sig(FORK, DEF_HANDLER, cleanup);
    141 
    142 	check_config(TEST_NODES);
    143 
    144 	/* Pause if that option was specified
    145 	 * TEST_PAUSE contains the code to fork the test with the -c option.
    146 	 */
    147 	TEST_PAUSE;
    148 }
    149 
    150 /*
    151  * cleanup() - performs all ONE TIME cleanup for this test at completion
    152  */
    153 static void cleanup(void)
    154 {
    155 
    156 }
    157