diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2011-01-05 06:48:18 -0500 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 06:47:32 -0500 |
| commit | 8e1023016cf17152972b98bce6c144834a4916d5 (patch) | |
| tree | b53d3e5a089fa96d837c6004262c2c24f9580523 /drivers | |
| parent | 19726cec63aeadad127f9e72ee69240336e37f15 (diff) | |
[S390] prevent unneccesary loops_per_jiffy recalculation
When the seqfile /proc/cpuinfo gets accesses for each possible cpu
loops_per_jiffy gets recalculated. However its value is only needed
on first access.
In addition loops_per_jiffy should be recalculated when the machine
reports a capability change.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/char/sclp_config.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c index b497afe061cc..16e232a99fb7 100644 --- a/drivers/s390/char/sclp_config.c +++ b/drivers/s390/char/sclp_config.c | |||
| @@ -33,6 +33,7 @@ static void sclp_cpu_capability_notify(struct work_struct *work) | |||
| 33 | int cpu; | 33 | int cpu; |
| 34 | struct sys_device *sysdev; | 34 | struct sys_device *sysdev; |
| 35 | 35 | ||
| 36 | s390_adjust_jiffies(); | ||
| 36 | pr_warning("cpu capability changed.\n"); | 37 | pr_warning("cpu capability changed.\n"); |
| 37 | get_online_cpus(); | 38 | get_online_cpus(); |
| 38 | for_each_online_cpu(cpu) { | 39 | for_each_online_cpu(cpu) { |