Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.
But since commit:
7447545 change all other clock references to use nanosecond resolution accessors
All timers use nanoseconds and we need to convert ticks to nanoseconds, by
doing something like:
y = muldiv64(x, get_ticks_per_sec(), TIMER_FREQ)
where x is the number of device ticks and y the number of system ticks.
y is used as nanoseconds in timer functions,
it works because 1 tick is 1 nanosecond.
(get_ticks_per_sec() is 10^9)
But if get_ticks_per_sec() / TIMER_FREQ is an integer, we can do:
y = x * TIMER_PERIOD;
Laurent Vivier (7):
PCI: remove muldiv64()
mips: remove muldiv64()
openrisc: remove muldiv64()
arm: remove muldiv64()
hpet: remove muldiv64()
bt: remove muldiv64()
net: remove muldiv64()
hw/bt/hci.c | 4 ++--
hw/mips/cputimer.c | 19 ++++++++-----------
hw/net/pcnet.c | 3 +--
hw/net/rtl8139.c | 14 ++++++--------
hw/openrisc/cputimer.c | 7 +++----
hw/timer/hpet.c | 6 +++---
hw/watchdog/wdt_i6300esb.c | 11 +++--------
include/hw/timer/hpet.h | 4 ++--
net/dump.c | 2 +-
target-arm/helper.c | 9 +++------
tests/rtl8139-test.c | 2 +-
11 files changed, 33 insertions(+), 48 deletions(-)
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2.1.0
