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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2012-07-20 11:15:08 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2012-07-20 11:15:08 +0200
commit27f6b416626a240e1b46f646d2e0c5266f4eac95 (patch)
tree4549855d7996ce9d18e1586e2f0bfb5fa5835718 /arch/s390/lib
parent921486b92bcb1b82ab6668dcbb36d05604966351 (diff)
downloadop-kernel-dev-27f6b416626a240e1b46f646d2e0c5266f4eac95.zip
op-kernel-dev-27f6b416626a240e1b46f646d2e0c5266f4eac95.tar.gz
s390/vtimer: rework virtual timer interface
The current virtual timer interface is inherently per-cpu and hard to use. The sole user of the interface is appldata which uses it to execute a function after a specific amount of cputime has been used over all cpus. Rework the virtual timer interface to hook into the cputime accounting. This makes the interface independent from the CPU timer interrupts, and makes the virtual timers global as opposed to per-cpu. Overall the code is greatly simplified. The downside is that the accuracy is not as good as the original implementation, but it is still good enough for appldata. Reviewed-by: Jan Glauber <jang@linux.vnet.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/lib')
-rw-r--r--arch/s390/lib/delay.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index 7d7c375..42d0cf8 100644
--- a/arch/s390/lib/delay.c
+++ b/arch/s390/lib/delay.c
@@ -12,8 +12,8 @@
#include <linux/module.h>
#include <linux/irqflags.h>
#include <linux/interrupt.h>
+#include <asm/vtimer.h>
#include <asm/div64.h>
-#include <asm/timer.h>
void __delay(unsigned long loops)
{
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