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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2007-10-22 06:52:39 -0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-10-22 06:52:47 -0400 |
| commit | fae8b22d3e3e3a3d317a7746493997af02a3f35c (patch) | |
| tree | 871aa91c51d713d7842ba1eb8661bde54d102842 /drivers/s390 | |
| parent | 32346f47dd46bed291464e194a6c47da6fdd1bc3 (diff) | |
[S390] Add per-cpu idle time / idle count sysfs attributes.
Add two new sysfs entries per cpu: idle_count and idle_time.
idle_count contains the number of times a cpu went into idle state.
idle_time contains the time a cpu spent in idle state in microseconds.
This can be used e.g. by powertop to tell how often idle state is
entered and left.
# cat /sys/devices/system/cpu/cpu0/idle_count
504
# cat /sys/devices/system/cpu/cpu0/idle_time
469734037 us
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
0 files changed, 0 insertions, 0 deletions