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Removed old hack of using Configuration Table entry ticks_per_timeslice

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being set to 0 to indicate that there should be no Clock Tick.  This
was used by the Timing Tests to avoid clock tick overhead perturbing
execution times.  Now the Timing Tests simply leave the Clock Tick
Driver out of the Device Driver Table.
This commit is contained in:
Joel Sherrill
2000-01-11 17:34:20 +00:00
parent bdb289988a
commit 0dd1d44582
30 changed files with 447 additions and 617 deletions
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43
c/src/lib/libbsp/sparc/erc32/clock/ckinit.c
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@@ -128,27 +128,24 @@ void Install_clock(
{
Clock_driver_ticks = 0;
if ( BSP_Configuration.ticks_per_timeslice ) {
Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 );
Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 );
/* approximately 1 us per countdown */
ERC32_MEC.Real_Time_Clock_Scalar = CLOCK_SPEED - 1;
ERC32_MEC.Real_Time_Clock_Counter = CPU_SPARC_CLICKS_PER_TICK;
/* approximately 1 us per countdown */
ERC32_MEC.Real_Time_Clock_Scalar = CLOCK_SPEED - 1;
ERC32_MEC.Real_Time_Clock_Counter = CPU_SPARC_CLICKS_PER_TICK;
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
ERC32_MEC_TIMER_COUNTER_LOAD_SCALER |
ERC32_MEC_TIMER_COUNTER_LOAD_COUNTER
);
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
ERC32_MEC_TIMER_COUNTER_LOAD_SCALER |
ERC32_MEC_TIMER_COUNTER_LOAD_COUNTER
);
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
ERC32_MEC_TIMER_COUNTER_RELOAD_AT_ZERO
);
atexit( Clock_exit );
}
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
ERC32_MEC_TIMER_COUNTER_RELOAD_AT_ZERO
);
atexit( Clock_exit );
}
/*
@@ -167,15 +164,13 @@ void Install_clock(
void Clock_exit( void )
{
if ( BSP_Configuration.ticks_per_timeslice ) {
ERC32_Mask_interrupt( ERC32_INTERRUPT_REAL_TIME_CLOCK );
ERC32_Mask_interrupt( ERC32_INTERRUPT_REAL_TIME_CLOCK );
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_DISABLE_COUNTING
);
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_DISABLE_COUNTING
);
/* do not restore old vector */
}
/* do not restore old vector */
}
/*