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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-05 12:48:18 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 12:47:32 +0100
commit8e1023016cf17152972b98bce6c144834a4916d5 (patch)
treeb53d3e5a089fa96d837c6004262c2c24f9580523 /drivers/s390
parent19726cec63aeadad127f9e72ee69240336e37f15 (diff)
downloadblackbird-op-linux-8e1023016cf17152972b98bce6c144834a4916d5.tar.gz
blackbird-op-linux-8e1023016cf17152972b98bce6c144834a4916d5.zip
[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/s390')
-rw-r--r--drivers/s390/char/sclp_config.c1
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)
int cpu;
struct sys_device *sysdev;
+ s390_adjust_jiffies();
pr_warning("cpu capability changed.\n");
get_online_cpus();
for_each_online_cpu(cpu) {
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