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

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* timer/timer.c: Eliminate empty function from every benchmark timer
	driver. Fix spelling.
This commit is contained in:
Joel Sherrill
2008-08-31 17:24:32 +00:00
parent e0c13fa383
commit 89866d84f8
4 changed files with 31 additions and 45 deletions
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c/src/lib/libbsp/arm/edb7312/ChangeLog
+5
View File
@@ -1,3 +1,8 @@
2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>
* timer/timer.c: Eliminate empty function from every benchmark timer
driver. Fix spelling.
2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>
* timer/timer.c: Rename timer driver methods to follow RTEMS
c/src/lib/libbsp/arm/edb7312/timer/timer.c
+9 -19
View File
@@ -11,8 +11,8 @@
* Notes:
* 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.
*
* It is important that the timer start/stop overhead be determined
* when porting or modifying this code.
@@ -25,16 +25,16 @@
#include <ep7312.h>
uint16_t tstart;
bool benchmark_timerfind_average_overhead;
bool benchmark_timer_find_average_overhead;
void benchmark_timerinitialize( void )
void benchmark_timer_initialize( void )
{
*EP7312_SYSCON1 |= EP7312_SYSCON1_TC2_512KHZ;
*EP7312_TC2D = 0xffff;
}
/*
* 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.
@@ -48,7 +48,7 @@ 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 )
{
uint16_t t;
uint32_t total;
@@ -62,7 +62,7 @@ int benchmark_timerread( void )
total = (uint32_t)0x0000ffff - t; /* result is 1/512000 = ~2 uS */
total = (total * 1953) / 1000; /* convert to uS */
if ( benchmark_timerfind_average_overhead == 1 )
if ( benchmark_timer_find_average_overhead == 1 )
return total; /* in XXX microsecond units */
else {
if ( total < LEAST_VALID )
@@ -74,19 +74,9 @@ 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(
bool find_flag
)
{
benchmark_timerfind_average_overhead = find_flag;
benchmark_timer_find_average_overhead = find_flag;
}
c/src/lib/libbsp/arm/gba/ChangeLog
+5
View File
@@ -1,3 +1,8 @@
2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>
* timer/timer.c: Eliminate empty function from every benchmark timer
driver. Fix spelling.
2008-08-31 Joel Sherrill <joel.sherrill@oarcorp.com>
* timer/timer.c: Rename timer driver methods to follow RTEMS
c/src/lib/libbsp/arm/gba/timer/timer.c
+12 -26
View File
@@ -18,8 +18,8 @@
* Notes:
* 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.
*
* It is important that the timer start/stop overhead be determined
* when porting or modifying this code.
@@ -55,15 +55,15 @@
#define GBA_TM0CNT_PS 0x0003
#endif
bool benchmark_timerfind_average_overhead;
bool benchmark_timer_find_average_overhead;
/**
* @brief benchmark_timerinitialize start TM0 and TM1
* @brief benchmark_timer_initialize start TM0 and TM1
*
* @param None
* @return None
*/
void benchmark_timerinitialize( void )
void benchmark_timer_initialize( void )
{
GBA_REG_TM1CNT = 0x0000; /* Stop Counters */
GBA_REG_TM0CNT = 0x0000;
@@ -75,7 +75,7 @@ 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.
@@ -88,14 +88,14 @@ void benchmark_timerinitialize( void )
#define LEAST_VALID 1 /**< Don't trust a clicks value lower than this */
/**
* @brief benchmark_timerread return timer countervalue in microseconds.
* @brief benchmark_timer_read return timer countervalue in microseconds.
*
* Used in Timing Test Suite.
*
* @param None
* @return Timer value in microseconds
*/
uint32_t benchmark_timerread( void )
uint32_t benchmark_timer_read( void )
{
uint32_t ticks;
uint32_t total;
@@ -110,7 +110,7 @@ uint32_t benchmark_timerread( void )
}
/* convert to uS */
total = ((ticks * __TickTime_ns) / 1000);
if ( benchmark_timerfind_average_overhead == 1 ) {
if ( benchmark_timer_find_average_overhead == 1 ) {
return total; /* in microseconds */
}
else {
@@ -122,28 +122,14 @@ uint32_t benchmark_timerread( void )
}
/**
* @brief Empty function
*
* Empty function call used in loops to measure basic cost of looping
* in Timing Test Suite.
*
* @param None
* @return RTEMS_SUCCESSFUL
*/
rtems_status_code benchmark_timerempty_function( void )
{
return RTEMS_SUCCESSFUL;
}
/**
* @brief Set benchmark_timerfind_average_overhead flag.
* @brief Set benchmark_timer_find_average_overhead flag.
*
* Used in Timing Test Suite.
*
* @param find_flag boolean find_flag
* @return None
*/
void benchmark_timerdisable_subtracting_average_overhead(bool find_flag)
void benchmark_timer_disable_subtracting_average_overhead(bool find_flag)
{
benchmark_timerfind_average_overhead = find_flag;
benchmark_timer_find_average_overhead = find_flag;
}