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score: Add SMP lock profiling support

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This commit is contained in:
Sebastian Huber
2014-03-07 14:36:22 +01:00
parent f980561ee0
commit 53ad908a64
25 changed files with 648 additions and 53 deletions
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2
cpukit/sapi/src/chainsmp.c
View File

@@ -22,7 +22,7 @@
#include <rtems/score/smplock.h>
static SMP_lock_Control chain_lock = SMP_LOCK_INITIALIZER;
static SMP_lock_Control chain_lock = SMP_LOCK_INITIALIZER("chains");
static void chain_acquire( SMP_lock_Context *lock_context )
{

62
cpukit/sapi/src/profilingiterate.c
View File

@@ -18,6 +18,7 @@
#include <rtems/profiling.h>
#include <rtems/counter.h>
#include <rtems/score/smplock.h>
#include <rtems.h>
#include <string.h>
@@ -76,6 +77,66 @@ static void per_cpu_stats_iterate(
#endif
}
#if defined(RTEMS_PROFILING) && defined(RTEMS_SMP)
RTEMS_STATIC_ASSERT(
RTEMS_PROFILING_SMP_LOCK_CONTENTION_COUNTS
== SMP_LOCK_STATS_CONTENTION_COUNTS,
smp_lock_contention_counts
);
#endif
static void smp_lock_stats_iterate(
rtems_profiling_visitor visitor,
void *visitor_arg,
rtems_profiling_data *data
)
{
#if defined(RTEMS_PROFILING) && defined(RTEMS_SMP)
SMP_lock_Stats_iteration_context iteration_context;
SMP_lock_Stats snapshot;
char name[64];
memset(data, 0, sizeof(*data));
data->header.type = RTEMS_PROFILING_SMP_LOCK;
_SMP_lock_Stats_iteration_start(&iteration_context);
while (
_SMP_lock_Stats_iteration_next(
&iteration_context,
&snapshot,
&name[0],
sizeof(name)
)
) {
rtems_profiling_smp_lock *smp_lock_data = &data->smp_lock;
smp_lock_data->name = name;
smp_lock_data->max_acquire_time =
rtems_counter_ticks_to_nanoseconds(snapshot.max_acquire_time);
smp_lock_data->max_section_time =
rtems_counter_ticks_to_nanoseconds(snapshot.max_section_time);
smp_lock_data->usage_count = snapshot.usage_count;
smp_lock_data->total_acquire_time =
rtems_counter_ticks_to_nanoseconds(snapshot.total_acquire_time);
smp_lock_data->total_section_time =
rtems_counter_ticks_to_nanoseconds(snapshot.total_section_time);
memcpy(
&smp_lock_data->contention_counts[0],
&snapshot.contention_counts[0],
sizeof(smp_lock_data->contention_counts)
);
(*visitor)(visitor_arg, data);
}
_SMP_lock_Stats_iteration_stop(&iteration_context);
#else
(void) visitor;
(void) visitor_arg;
(void) data;
#endif
}
void rtems_profiling_iterate(
rtems_profiling_visitor visitor,
void *visitor_arg
@@ -84,4 +145,5 @@ void rtems_profiling_iterate(
rtems_profiling_data data;
per_cpu_stats_iterate(visitor, visitor_arg, &data);
smp_lock_stats_iterate(visitor, visitor_arg, &data);
}