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/*
* Copyright (C) 2006, Intel Corporation
*
* This file is part of irqbalance
*
* This program file 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; version 2 of the License.
*
* 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 in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include "cpumask.h"
#include "irqbalance.h"
#define LINESIZE 4096
void parse_proc_interrupts(void)
{
FILE *file;
char *line = NULL;
size_t size = 0;
file = fopen("/proc/interrupts", "r");
if (!file)
return;
/* first line is the header we don't need; nuke it */
if (getline(&line, &size, file)==0) {
free(line);
return;
}
while (!feof(file)) {
int cpunr;
int number;
uint64_t count;
char *c, *c2;
if (getline(&line, &size, file)==0)
break;
/* lines with letters in front are special, like NMI count. Ignore */
if (!(line[0]==' ' || (line[0]>='0' && line[0]<='9')))
break;
c = strchr(line, ':');
if (!c)
continue;
*c = 0;
c++;
number = strtoul(line, NULL, 10);
count = 0;
cpunr = 0;
c2=NULL;
while (1) {
uint64_t C;
C = strtoull(c, &c2, 10);
if (c==c2) /* end of numbers */
break;
count += C;
c=c2;
cpunr++;
}
if (cpunr != core_count)
need_cpu_rescan = 1;
set_interrupt_count(number, count);
}
fclose(file);
free(line);
}
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