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/*
*
* Copyright (c) International Business Machines Corp., 2009
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* DESCRIPTION
* get_no_of_hugepages() --> Return No. of hugepages for this systems
* from /proc/meminfo
* hugepages_size() --> Return Hugepages Size for this system
* from /proc/meminfo
*/
#include <fcntl.h>
#include <sys/types.h>
#include <test.h>
int get_no_of_hugepages() {
#ifdef __linux__
FILE *f;
char buf[BUFSIZ];
f = popen("grep 'HugePages_Total' /proc/meminfo | cut -d ':' -f2 | tr -d ' \n'", "r");
if (!f)
tst_brkm(TBROK, NULL,
"Could not get info about Total_Hugepages from /proc/meminfo");
if (!fgets(buf, 10, f)) {
fclose(f);
tst_brkm(TBROK, NULL,
"Could not read Total_Hugepages from /proc/meminfo");
}
pclose(f);
return(atoi(buf));
#else
return -1;
#endif
}
int get_no_of_free_hugepages() {
#ifdef __linux__
FILE *f;
char buf[BUFSIZ];
f = popen("grep 'HugePages_Free' /proc/meminfo | cut -d ':' -f2 | tr -d ' \n'", "r");
if (!f)
tst_brkm(TBROK, NULL,
"Could not get info about HugePages_Free from /proc/meminfo");
if (!fgets(buf, 10, f)) {
fclose(f);
tst_brkm(TBROK, NULL,
"Could not read HugePages_Free from /proc/meminfo");
}
pclose(f);
return(atoi(buf));
#else
return -1;
#endif
}
int hugepages_size() {
#ifdef __linux__
FILE *f;
char buf[BUFSIZ];
f = popen("grep 'Hugepagesize' /proc/meminfo | cut -d ':' -f2 | tr -d 'kB \n'", "r");
if (!f)
tst_brkm(TBROK, NULL,
"Could not get info about HugePages_Size from /proc/meminfo");
if (!fgets(buf, 10, f)) {
fclose(f);
tst_brkm(TBROK, NULL,
"Could not read HugePages_Size from /proc/meminfo");
}
pclose(f);
return(atoi(buf));
#else
return -1;
#endif
}
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