1 /******************************************************************************/ 2 /* */ 3 /* Copyright (c) International Business Machines Corp., 2007 */ 4 /* */ 5 /* This program is free software; you can redistribute it and/or modify */ 6 /* it under the terms of the GNU General Public License as published by */ 7 /* the Free Software Foundation; either version 2 of the License, or */ 8 /* (at your option) any later version. */ 9 /* */ 10 /* This program is distributed in the hope that it will be useful, */ 11 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ 12 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */ 13 /* the GNU General Public License for more details. */ 14 /* */ 15 /* You should have received a copy of the GNU General Public License */ 16 /* along with this program; if not, write to the Free Software */ 17 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ 18 /* */ 19 /******************************************************************************/ 20 21 /******************************************************************************/ 22 /* */ 23 /* File: numa_node_size.c */ 24 /* */ 25 /* Description: Invokes numa_node_size() API */ 26 /* */ 27 /* Author: Pradeep Kumar Surisetty pradeepkumars (at) in.ibm.com */ 28 /* */ 29 /* History: Created - Nov 28 2007 - Pradeep Kumar Surisetty */ 30 /* pradeepkumars (at) in.ibm.com */ 31 /* */ 32 /******************************************************************************/ 33 34 #include "config.h" 35 #include <stdio.h> 36 #include <stdlib.h> 37 #if HAVE_NUMA_H 38 #include <numa.h> 39 #endif 40 41 int numa_exit_on_error = 0; 42 char *fmt_mem(unsigned long long mem, char *buf) 43 { 44 if (mem == -1L) 45 sprintf(buf, "<not available>"); 46 else 47 sprintf(buf, "%Lu MB", mem >> 20); 48 return buf; 49 } 50 51 void hardware(void) 52 { 53 #if HAVE_NUMA_H 54 int i; 55 int maxnode = numa_max_node(); 56 printf("available: %d nodes (0-%d)\n", 1 + maxnode, maxnode); 57 for (i = 0; i <= maxnode; i++) { 58 char buf[64]; 59 long fr; 60 unsigned long sz = numa_node_size(i, &fr); 61 printf("node %d cpus:", i); 62 printf("node %d size: %s\n", i, fmt_mem(sz, buf)); 63 printf("node %d free: %s\n", i, fmt_mem(fr, buf)); 64 } 65 #endif 66 } 67 68 int main(void) 69 { 70 #if HAVE_NUMA_H 71 nodemask_t nodemask; 72 void hardware(); 73 if (numa_available() < 0) { 74 printf("This system does not support NUMA policy\n"); 75 numa_error("numa_available"); 76 numa_exit_on_error = 1; 77 exit(numa_exit_on_error); 78 } 79 nodemask_zero(&nodemask); 80 nodemask_set(&nodemask, 1); 81 numa_bind(&nodemask); 82 hardware(); 83 return numa_exit_on_error; 84 #else 85 printf("NUMA is not available\n"); 86 return 1; 87 #endif 88 } 89
