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irqbalance: Fix detection of CPUs in sysfs

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The current approach still let wrong patterns like "cpu0_idle", "cpu000_idle",
"cpu0idle" and "cpu10001a" pass through. Of course it's highly unlikely that
directories with these names will ever show in /sys/devices/system/cpu/, but
here's the patch against the latest git if you want to fix it.

Signed-off-by: Leonardo Chiquitto <lchiquitto@suse.com>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
This commit is contained in:
Leonardo Chiquitto 2011-10-13 12:54:48 -06:00 committed by Neil Horman
parent 430c88e502
commit d7829d21b0
1 changed files with 10 additions and 7 deletions
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17
cputree.c
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@ -27,6 +27,7 @@
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
@ -334,15 +335,17 @@ void parse_cpu_tree(void)
if (!dir)
return;
do {
int num;
char pad;
entry = readdir(dir);
if (entry && strlen(entry->d_name)>3 && strstr(entry->d_name,"cpu")) {
/*
* We only want to count real cpus, not cpufreq and
* cpuidle
*/
if (entry &&
sscanf(entry->d_name, "cpu%d%c", &num, &pad) == 1 &&
!strchr(entry->d_name, ' ')) {
char new_path[PATH_MAX];
/*
* We only want to count real cpus, not cpufreq and
* cpuidle
*/
if ((entry->d_name[3] < 0x30) | (entry->d_name[3] > 0x39))
continue;
sprintf(new_path, "/sys/devices/system/cpu/%s", entry->d_name);
do_one_cpu(new_path);
}