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| author | Janosch Frank <frankja@linux.ibm.com> | 2020-06-24 03:52:16 -0400 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2020-07-02 09:59:24 +0200 |
| commit | e70bc57ba0c982944cf5b71f293122dbb2b462f4 (patch) | |
| tree | 321592e044555c165be7882079708e502a9a84f8 /pc-bios/s390-ccw/s390-time.h | |
| parent | 8c6cc7b9df36e0ca6f562a46f2afd883b6dc6867 (diff) | |
| download | qemu-e70bc57ba0c982944cf5b71f293122dbb2b462f4.zip qemu-e70bc57ba0c982944cf5b71f293122dbb2b462f4.tar.gz qemu-e70bc57ba0c982944cf5b71f293122dbb2b462f4.tar.bz2 | |
pc-bios: s390x: Consolidate timing functions into time.h
Let's consolidate timing related functions into one header.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200624075226.92728-3-frankja@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'pc-bios/s390-ccw/s390-time.h')
| -rw-r--r-- | pc-bios/s390-ccw/s390-time.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/s390-time.h b/pc-bios/s390-ccw/s390-time.h new file mode 100644 index 0000000..ed6d982 --- /dev/null +++ b/pc-bios/s390-ccw/s390-time.h @@ -0,0 +1,23 @@ +#ifndef TIME_H +#define TIME_H + +static inline u64 get_clock(void) +{ + u64 r; + + asm volatile("stck %0" : "=Q" (r) : : "cc"); + return r; +} + +static inline u64 get_time_ms(void) +{ + /* Bit 51 is incremented each microsecond */ + return (get_clock() >> 12) / 1000; +} + +static inline u64 get_time_seconds(void) +{ + return get_time_ms() / 1000; +} + +#endif |