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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2007-11-05 11:10:14 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-11-05 11:10:18 +0100 |
| commit | d2cb0e6ecbe0ef93ab36631cd17ec6cf92b69c5a (patch) | |
| tree | 029b4ace47d18e0f8ac1e29db7961d9a28804e03 /arch/s390 | |
| parent | [S390] Rename "idle_time" attribute to "idle_time_us". (diff) | |
| download | linux-dev-d2cb0e6ecbe0ef93ab36631cd17ec6cf92b69c5a.tar.xz linux-dev-d2cb0e6ecbe0ef93ab36631cd17ec6cf92b69c5a.zip | |
[S390] tod clock: announce clocksource as perfect
The Time of Day clock is the standard time source for s390. It is
- monotonic
- allows very fast reading
- architecture guarantees at least microsecond stepping
- available as part of the architecture
We should announce the rate of tod as 400 to be in sync with the
description found in clocksource.h:
"400-499:Perfect The ideal clocksource. A must-use where available."
This change will prefer tod over less reliable clock sources.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/time.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 48dae49bc1ec..a963fe81359e 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -307,7 +307,7 @@ static cycle_t read_tod_clock(void) static struct clocksource clocksource_tod = { .name = "tod", - .rating = 100, + .rating = 400, .read = read_tod_clock, .mask = -1ULL, .mult = 1000, |