diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-02-05 21:18:19 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-02-05 21:18:19 +0100 |
| commit | d54853ef8cb17296ac7bce9c77430fb7c80532d0 (patch) | |
| tree | 649e14d532e17231225a042a7c9a3d9207ad91ee /include/asm-s390/hardirq.h | |
| parent | c1821c2e9711adc3cd298a16b7237c92a2cee78d (diff) | |
[S390] ETR support.
This patch adds support for clock synchronization to an external time
reference (ETR). The external time reference sends an oscillator
signal and a synchronization signal every 2^20 microseconds to keep
the TOD clocks of all connected servers in sync. For availability
two ETR units can be connected to a machine. If the clock deviates
for more than the sync-check tolerance all cpus get a machine check
that indicates that the clock is out of sync. For the lovely details
how to get the clock back in sync see the code below.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/hardirq.h')
| -rw-r--r-- | include/asm-s390/hardirq.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-s390/hardirq.h b/include/asm-s390/hardirq.h index c2f6a8782d31..31beb18cb3d1 100644 --- a/include/asm-s390/hardirq.h +++ b/include/asm-s390/hardirq.h @@ -32,6 +32,6 @@ typedef struct { #define HARDIRQ_BITS 8 -extern void account_ticks(void); +extern void account_ticks(u64 time); #endif /* __ASM_HARDIRQ_H */ |