numa_node_size.c revision 1da4e77bd5b090c6402b9f5c0d61cfbc9706c94a
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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#define _GNU_SOURCE 35#include <stdio.h> 36#include <stdlib.h> 37//#include "numa.h" 38char *fmt_mem(unsigned long long mem, char *buf) 39{ 40 if (mem == -1L) 41 sprintf(buf, "<not available>"); 42 else 43 sprintf(buf, "%Lu MB", mem >> 20); 44 return buf; 45} 46void hardware(void) 47{ 48 int i; 49 int maxnode = numa_max_node(); 50 printf("available: %d nodes (0-%d)\n", 1+maxnode, maxnode); 51 for (i = 0; i <= maxnode; i++) { 52 char buf[64]; 53 long fr; 54 unsigned long sz = numa_node_size(i, &fr); 55 printf("node %d cpus:", i); 56 printf("node %d size: %s\n", i, fmt_mem(sz, buf)); 57 printf("node %d free: %s\n", i, fmt_mem(fr, buf)); 58 } 59} 60int main() 61{ 62 void hardware(); 63 if (numa_available() < 0) 64 { 65 printf("This system does not support NUMA policy"); 66 exit(1); 67 } 68 hardware(); 69 return 0; 70} 71 72