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

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* timer/timer.c: Rename timer driver methods to follow RTEMS
	programming conventions.
This commit is contained in:
Joel Sherrill
2008-08-31 16:59:49 +00:00
parent a5cd22710d
commit a903b7beff
2 changed files with 14 additions and 19 deletions
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5
c/src/lib/libcpu/mips/ChangeLog
View File

@@ -1,3 +1,8 @@
2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>
* timer/timer.c: Rename timer driver methods to follow RTEMS
programming conventions.
2007-11-26 Joel Sherrill <joel.sherrill@oarcorp.com> 2007-11-26 Joel Sherrill <joel.sherrill@oarcorp.com>
* clock/ckinit.c: Eliminate the clicks_per_microsecond field in the * clock/ckinit.c: Eliminate the clicks_per_microsecond field in the

28
c/src/lib/libcpu/mips/timer/timer.c
View File

@@ -21,8 +21,8 @@
* *
* This file manages the benchmark timer used by the RTEMS Timing Test * This file manages the benchmark timer used by the RTEMS Timing Test
* Suite. Each measured time period is demarcated by calls to * Suite. Each measured time period is demarcated by calls to
* Timer_initialize() and Read_timer(). Read_timer() usually returns * benchmark_timer_initialize() and benchmark_timer_read(). benchmark_timer_read() usually returns
* the number of microseconds since Timer_initialize() exitted. * the number of microseconds since benchmark_timer_initialize() exitted.
* *
* NOTE: It is important that the timer start/stop overhead be * NOTE: It is important that the timer start/stop overhead be
* determined when porting or modifying this code. * determined when porting or modifying this code.
@@ -52,10 +52,10 @@
extern uint32_t mips_read_timer( void ); extern uint32_t mips_read_timer( void );
static rtems_boolean Timer_driver_Find_average_overhead; static rtems_boolean benchmark_timer_find_average_overhead;
static uint32_t Timer_initial_value = 0; static uint32_t Timer_initial_value = 0;
void Timer_initialize( void ) void benchmark_timer_initialize( void )
{ {
Timer_initial_value = mips_read_timer(); Timer_initial_value = mips_read_timer();
/* /*
@@ -66,7 +66,7 @@ void Timer_initialize( void )
} }
/* /*
* The following controls the behavior of Read_timer(). * The following controls the behavior of benchmark_timer_read().
* *
* AVG_OVEREHAD is the overhead for starting and stopping the timer. It * AVG_OVEREHAD is the overhead for starting and stopping the timer. It
* is usually deducted from the number returned. * is usually deducted from the number returned.
@@ -80,7 +80,7 @@ void Timer_initialize( void )
/* This value is in cycles. */ /* This value is in cycles. */
#define LEAST_VALID 1 /* Don't trust a clicks value lower than this */ #define LEAST_VALID 1 /* Don't trust a clicks value lower than this */
int Read_timer( void ) int benchmark_timer_read( void )
{ {
uint64_t clicks; uint64_t clicks;
uint32_t total; uint32_t total;
@@ -107,7 +107,7 @@ int Read_timer( void )
total = clicks; total = clicks;
#endif #endif
if ( Timer_driver_Find_average_overhead == 1 ) if ( benchmark_timer_find_average_overhead == 1 )
return total; /* in # cycles units */ return total; /* in # cycles units */
else { else {
if ( total < LEAST_VALID ) if ( total < LEAST_VALID )
@@ -119,19 +119,9 @@ int Read_timer( void )
} }
} }
/* void benchmark_timer_disable_subtracting_average_overhead(
* Empty function call used in loops to measure basic cost of looping
* in Timing Test Suite.
*/
rtems_status_code Empty_function( void )
{
return RTEMS_SUCCESSFUL;
}
void Set_find_average_overhead(
rtems_boolean find_flag rtems_boolean find_flag
) )
{ {
Timer_driver_Find_average_overhead = find_flag; benchmark_timer_find_average_overhead = find_flag;
} }