diff options
| author | Thomas Renninger <trenn@suse.de> | 2011-08-12 01:11:37 +0200 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2011-08-15 20:03:10 +0200 |
| commit | 7c74d2bc5a9d43d33d6f16c1e706147162e2bc52 (patch) | |
| tree | f9a3578dca29ca782df483d9cdc8f5bc376d5ef2 /tools/power/cpupower/utils/helpers/sysfs.h | |
| parent | 88f984e0e235f82a5d34f4a99244eeb14e1413e0 (diff) | |
cpupower: Better detect offlined CPUs
Before, checking for offlined CPUs was done dirty and
it was checked whether topology parsing returned -1 values.
But this is a valid case on a Xen (and possibly other) kernels.
Do proper online/offline checking, also take CONFIG_HOTPLUG_CPU
option into account (no /sys/devices/../cpuX/online file).
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'tools/power/cpupower/utils/helpers/sysfs.h')
| -rw-r--r-- | tools/power/cpupower/utils/helpers/sysfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/helpers/sysfs.h b/tools/power/cpupower/utils/helpers/sysfs.h index f9373e090637..8cb797bbceb0 100644 --- a/tools/power/cpupower/utils/helpers/sysfs.h +++ b/tools/power/cpupower/utils/helpers/sysfs.h @@ -7,6 +7,8 @@ extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen); +extern int sysfs_is_cpu_online(unsigned int cpu); + extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu, unsigned int idlestate); extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu, |