1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2014, Michael Ellerman, IBM Corp. 4 */ 5 6 #ifndef _SELFTESTS_POWERPC_PMU_EBB_TRACE_H 7 #define _SELFTESTS_POWERPC_PMU_EBB_TRACE_H 8 9 #include "utils.h" 10 11 #define TRACE_TYPE_REG 1 12 #define TRACE_TYPE_COUNTER 2 13 #define TRACE_TYPE_STRING 3 14 #define TRACE_TYPE_INDENT 4 15 #define TRACE_TYPE_OUTDENT 5 16 17 struct trace_entry 18 { 19 u8 type; 20 u8 length; 21 u8 data[]; 22 }; 23 24 struct trace_buffer 25 { 26 u64 size; 27 bool overflow; 28 void *tail; 29 u8 data[]; 30 }; 31 32 struct trace_buffer *trace_buffer_allocate(u64 size); 33 int trace_log_reg(struct trace_buffer *tb, u64 reg, u64 value); 34 int trace_log_counter(struct trace_buffer *tb, u64 value); 35 int trace_log_string(struct trace_buffer *tb, char *str); 36 int trace_log_indent(struct trace_buffer *tb); 37 int trace_log_outdent(struct trace_buffer *tb); 38 void trace_buffer_print(struct trace_buffer *tb); 39 void trace_print_location(struct trace_buffer *tb); 40 41 #endif /* _SELFTESTS_POWERPC_PMU_EBB_TRACE_H */ 42