3752e453f6
The Power8 Performance Monitor Unit (PMU) has a new feature called Event Based Branches (EBB). This commit adds tests of the kernel API for using EBBs. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
42 lines
951 B
C
42 lines
951 B
C
/*
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* Copyright 2014, Michael Ellerman, IBM Corp.
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* Licensed under GPLv2.
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*/
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#ifndef _SELFTESTS_POWERPC_PMU_EBB_TRACE_H
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#define _SELFTESTS_POWERPC_PMU_EBB_TRACE_H
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#include "utils.h"
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#define TRACE_TYPE_REG 1
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#define TRACE_TYPE_COUNTER 2
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#define TRACE_TYPE_STRING 3
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#define TRACE_TYPE_INDENT 4
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#define TRACE_TYPE_OUTDENT 5
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struct trace_entry
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{
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u8 type;
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u8 length;
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u8 data[0];
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};
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struct trace_buffer
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{
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u64 size;
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bool overflow;
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void *tail;
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u8 data[0];
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};
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struct trace_buffer *trace_buffer_allocate(u64 size);
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int trace_log_reg(struct trace_buffer *tb, u64 reg, u64 value);
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int trace_log_counter(struct trace_buffer *tb, u64 value);
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int trace_log_string(struct trace_buffer *tb, char *str);
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int trace_log_indent(struct trace_buffer *tb);
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int trace_log_outdent(struct trace_buffer *tb);
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void trace_buffer_print(struct trace_buffer *tb);
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void trace_print_location(struct trace_buffer *tb);
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#endif /* _SELFTESTS_POWERPC_PMU_EBB_TRACE_H */
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