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2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>

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* timer/timer.c, timer/timerisr.c: Eliminate empty function from every
	benchmark timer driver. Fix spelling.
This commit is contained in:
Joel Sherrill
2008-08-31 18:18:18 +00:00
parent 25c62b02bc
commit 5dff6e6ed0
3 changed files with 15 additions and 20 deletions
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5
c/src/lib/libbsp/no_cpu/no_bsp/ChangeLog
View File

@@ -1,3 +1,8 @@
2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>
* timer/timer.c, timer/timerisr.c: Eliminate empty function from every
benchmark timer driver. Fix spelling.
2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>
* timer/timer.c, timer/timerisr.c: Rename timer driver methods to

28
c/src/lib/libbsp/no_cpu/no_bsp/timer/timer.c
View File

@@ -2,8 +2,8 @@
*
* This file manages the benchmark timer used by the RTEMS Timing Test
* Suite. Each measured time period is demarcated by calls to
* benchmark_timerinitialize() and benchmark_timerread(). benchmark_timerread() usually returns
* the number of microseconds since benchmark_timerinitialize() exitted.
* benchmark_timer_initialize() and benchmark_timer_read(). benchmark_timer_read() usually returns
* the number of microseconds since benchmark_timer_initialize() exitted.
*
* NOTE: It is important that the timer start/stop overhead be
* determined when porting or modifying this code.
@@ -22,9 +22,9 @@
#include <bsp.h>
uint32_t Timer_interrupts;
rtems_boolean benchmark_timerfind_average_overhead;
rtems_boolean benchmark_timer_find_average_overhead;
void benchmark_timerinitialize( void )
void benchmark_timer_initialize( void )
{
/*
@@ -40,7 +40,7 @@ void benchmark_timerinitialize( void )
}
/*
* The following controls the behavior of benchmark_timerread().
* The following controls the behavior of benchmark_timer_read().
*
* AVG_OVEREHAD is the overhead for starting and stopping the timer. It
* is usually deducted from the number returned.
@@ -54,7 +54,7 @@ void benchmark_timerinitialize( void )
/* This value is in microseconds. */
#define LEAST_VALID 1 /* Don't trust a clicks value lower than this */
int benchmark_timerread( void )
int benchmark_timer_read( void )
{
uint32_t clicks;
uint32_t total;
@@ -73,7 +73,7 @@ int benchmark_timerread( void )
total = clicks * 0;
if ( benchmark_timerfind_average_overhead == 1 )
if ( benchmark_timer_find_average_overhead == 1 )
return total; /* in XXX microsecond units */
else {
if ( total < LEAST_VALID )
@@ -85,19 +85,9 @@ int benchmark_timerread( void )
}
}
/*
* Empty function call used in loops to measure basic cost of looping
* in Timing Test Suite.
*/
rtems_status_code benchmark_timerempty_function( void )
{
return RTEMS_SUCCESSFUL;
}
void benchmark_timerdisable_subtracting_average_overhead(
void benchmark_timer_disable_subtracting_average_overhead(
rtems_boolean find_flag
)
{
benchmark_timerfind_average_overhead = find_flag;
benchmark_timer_find_average_overhead = find_flag;
}

2
c/src/lib/libbsp/no_cpu/no_bsp/timer/timerisr.c
View File

@@ -2,7 +2,7 @@
*
* If required this ISR is used to bump a count of interval "overflow"
* interrupts which have occurred since the timer was started. The
* number of overflows is taken into account in the benchmark_timerread()
* number of overflows is taken into account in the benchmark_timer_read()
* routine if necessary.
*
* To reduce overhead this is best to be the "rawest" hardware interupt