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45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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* Debug/performance measurements for mm0
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*
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* Copyright (C) 2010 B Labs Ltd.
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*/
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#ifndef __ARCH_DEBUG_H__
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#define __ARCH_DEBUG_H__
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#if !defined(CONFIG_DEBUG_PERFMON_USER)
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#include <l4lib/types.h>
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/* Common empty definitions for all arches */
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static inline u32 perfmon_read_cyccnt() { return 0; }
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static inline void perfmon_reset_start_cyccnt() { }
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static inline u32 perfmon_read_reset_start_cyccnt() { return 0; }
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#define debug_record_cycles(str)
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#else /* End of CONFIG_DEBUG_PERFMON_USER */
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/* Architecture specific perfmon cycle counting */
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#include L4LIB_INC_SUBARCH(perfmon.h)
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extern u64 perfmon_total_cycles;
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extern u64 current_cycles;
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/*
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* This is for Cortex-A9 running at 400Mhz. 25 / 100000 is
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* a rewriting of 2.5 nanosec / 1,000,000
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*/
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#define debug_record_cycles(str) \
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{ \
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current_cycles = perfmon_read_cyccnt(); \
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perfmon_total_cycles += current_cycles; \
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printf("%s: took %llu milliseconds\n", str, \
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current_cycles * 64 * 25 / 100000); \
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perfmon_reset_start_cyccnt(); \
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}
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#endif /* End of !CONFIG_DEBUG_PERFMON_USER */
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#endif /* __ARCH_DEBUG_H__ */
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