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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2009-04-14 15:36:28 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-04-14 15:37:27 +0200
commitb6112ccbff5ec580d46b584ecc3c3a773b830da2 (patch)
tree71553f09a2acfedec85f3c29a1c65e0a257001fb /arch/s390/include
parent[S390] cpu hotplug and accounting values (diff)
downloadlinux-b6112ccbff5ec580d46b584ecc3c3a773b830da2.tar.xz
linux-b6112ccbff5ec580d46b584ecc3c3a773b830da2.zip
[S390] add read_persistent_clock
Add a read_persistent_clock function that does not just return 0. Since timekeeping_init calls the function before time_init has been called move reset_tod_clock to early.c to make sure that the TOD clock is running when read_persistent_clock is invoked. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/timex.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index d744c3d62de5..cc21e3e20fd7 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -11,6 +11,9 @@
#ifndef _ASM_S390_TIMEX_H
#define _ASM_S390_TIMEX_H
+/* The value of the TOD clock for 1.1.1970. */
+#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
+
/* Inline functions for clock register access. */
static inline int set_clock(__u64 time)
{
@@ -85,4 +88,6 @@ int get_sync_clock(unsigned long long *clock);
void init_cpu_timer(void);
unsigned long long monotonic_clock(void);
+extern u64 sched_clock_base_cc;
+
#endif