71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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* Copyright 2014, General Dynamics C4 Systems
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*
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* This software may be distributed and modified according to the terms of
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* the GNU General Public License version 2. Note that NO WARRANTY is provided.
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* See "LICENSE_GPLv2.txt" for details.
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*
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* @TAG(GD_GPL)
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*/
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#ifndef BENCHMARK_H
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#define BENCHMARK_H
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#include <arch/benchmark.h>
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#include <machine/io.h>
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#include <arch/api/constants.h>
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#include <arch/machine/hardware.h>
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#include <benchmark/benchmark_tracepoints_types.h>
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#include <mode/hardware.h>
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#if CONFIG_MAX_NUM_TRACE_POINTS > 0
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#define TRACE_POINT_START(x) trace_point_start(x)
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#define TRACE_POINT_STOP(x) trace_point_stop(x)
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#define MAX_LOG_SIZE (seL4_LogBufferSize / sizeof(benchmark_tracepoint_log_entry_t))
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extern timestamp_t ksEntries[CONFIG_MAX_NUM_TRACE_POINTS];
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extern bool_t ksStarted[CONFIG_MAX_NUM_TRACE_POINTS];
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extern timestamp_t ksExit;
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extern seL4_Word ksLogIndex;
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extern seL4_Word ksLogIndexFinalized;
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extern paddr_t ksUserLogBuffer;
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static inline void
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trace_point_start(word_t id)
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{
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ksEntries[id] = timestamp();
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ksStarted[id] = true;
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}
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static inline void
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trace_point_stop(word_t id)
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{
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benchmark_tracepoint_log_entry_t *ksLog = (benchmark_tracepoint_log_entry_t *) KS_LOG_PPTR;
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ksExit = timestamp();
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if (likely(ksUserLogBuffer != 0)) {
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if (likely(ksStarted[id])) {
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ksStarted[id] = false;
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if (likely(ksLogIndex < MAX_LOG_SIZE)) {
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ksLog[ksLogIndex] = (benchmark_tracepoint_log_entry_t) {
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id, ksExit - ksEntries[id]
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};
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}
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/* increment the log index even if we have exceeded the log size
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* this is so we can tell if we need a bigger log */
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ksLogIndex++;
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}
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/* If this fails integer overflow has occured. */
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assert(ksLogIndex > 0);
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}
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}
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#else
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#define TRACE_POINT_START(x)
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#define TRACE_POINT_STOP(x)
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#endif /* CONFIG_MAX_NUM_TRACE_POINTS > 0 */
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#endif /* BENCHMARK_H */
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