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@in.ibm.com */ 28/* */ 29/* History: Created - Nov 28 2007 - Pradeep Kumar Surisetty */ 30/* pradeepkumars@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 41int numa_exit_on_error = 0; 42char *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 51void 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 68int 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