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pit: no lock required in pit anymore

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timer service calls platform timer nowadays solely from the vary same thread
 - the entrypoint of the timer service

Issue #1106
This commit is contained in:
Alexander Boettcher 2014-03-19 20:44:21 +01:00 committed by Christian Helmuth
parent 7d232cafb0
commit 1eb3f13484
1 changed files with 0 additions and 5 deletions
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5
os/src/drivers/timer/include_pit/platform_timer.h
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@ -63,7 +63,6 @@ class Platform_timer
Genode::Irq_connection _timer_irq; Genode::Irq_connection _timer_irq;
unsigned long mutable _curr_time_usec; unsigned long mutable _curr_time_usec;
Genode::uint16_t mutable _counter_init_value; Genode::uint16_t mutable _counter_init_value;
Genode::Lock mutable _update_curr_time_lock;
bool mutable _handled_wrap; bool mutable _handled_wrap;
/** /**
@ -122,8 +121,6 @@ class Platform_timer
*/ */
unsigned long curr_time() const unsigned long curr_time() const
{ {
Genode::Lock::Guard lock(_update_curr_time_lock);
Genode::uint32_t passed_ticks; Genode::uint32_t passed_ticks;
/* /*
@ -174,8 +171,6 @@ class Platform_timer
*/ */
void schedule_timeout(unsigned long timeout_usec) void schedule_timeout(unsigned long timeout_usec)
{ {
Genode::Lock::Guard lock(_update_curr_time_lock);
/* limit timer-interrupt rate */ /* limit timer-interrupt rate */
enum { MAX_TIMER_IRQS_PER_SECOND = 4*1000 }; enum { MAX_TIMER_IRQS_PER_SECOND = 4*1000 };
if (timeout_usec < 1000*1000/MAX_TIMER_IRQS_PER_SECOND) if (timeout_usec < 1000*1000/MAX_TIMER_IRQS_PER_SECOND)