1 // SPDX-License-Identifier: GPL-2.0+
26 	 * of the function from gd->relocaddr
31 	struct trace_call *ftrace;	/* The function call records */  member
32 	ulong ftrace_size;	/* Num. of ftrace records we have space for */
33 	ulong ftrace_count;	/* Num. of ftrace records written */
49 	offset -= (uintptr_t)&_init;  in func_ptr_to_num()
51 	if (gd->flags & GD_FLG_RELOC)  in func_ptr_to_num()
52 		offset -= gd->relocaddr;  in func_ptr_to_num()
54 		offset -= CONFIG_SYS_TEXT_BASE;  in func_ptr_to_num()
62 	if (hdr->depth > hdr->depth_limit) {  in add_ftrace()
63 		hdr->ftrace_too_deep_count++;  in add_ftrace()
66 	if (hdr->ftrace_count < hdr->ftrace_size) {  in add_ftrace()
67 		struct trace_call *rec = &hdr->ftrace[hdr->ftrace_count];  in add_ftrace()
69 		rec->func = func_ptr_to_num(func_ptr);  in add_ftrace()
70 		rec->caller = func_ptr_to_num(caller);  in add_ftrace()
71 		rec->flags = flags | (timer_get_us() & FUNCF_TIMESTAMP_MASK);  in add_ftrace()
73 	hdr->ftrace_count++;  in add_ftrace()
78 	if (hdr->ftrace_count < hdr->ftrace_size) {  in add_textbase()
79 		struct trace_call *rec = &hdr->ftrace[hdr->ftrace_count];  in add_textbase()
81 		rec->func = CONFIG_SYS_TEXT_BASE;  in add_textbase()
82 		rec->caller = 0;  in add_textbase()
83 		rec->flags = FUNCF_TEXTBASE;  in add_textbase()
85 	hdr->ftrace_count++;  in add_textbase()
105 		if (func < hdr->func_count) {  in __cyg_profile_func_enter()
106 			hdr->call_accum[func]++;  in __cyg_profile_func_enter()
107 			hdr->call_count++;  in __cyg_profile_func_enter()
109 			hdr->untracked_count++;  in __cyg_profile_func_enter()
111 		hdr->depth++;  in __cyg_profile_func_enter()
112 		if (hdr->depth > hdr->depth_limit)  in __cyg_profile_func_enter()
113 			hdr->max_depth = hdr->depth;  in __cyg_profile_func_enter()
130 		hdr->depth--;  in __cyg_profile_func_exit()
137  * The information is written into the supplied buffer - a header followed
141  * @param buff_size	Size of buffer
142  * @param needed	Returns size of buffer needed, which may be
144  * @return 0 if ok, -1 if space was exhausted
161 	for (func = upto = 0; func < hdr->func_count; func++) {  in trace_list_functions()
162 		int calls = hdr->call_accum[func];  in trace_list_functions()
170 			stats->offset = func * FUNC_SITE_SIZE;  in trace_list_functions()
171 			stats->call_count = calls;  in trace_list_functions()
179 		output_hdr->rec_count = upto;  in trace_list_functions()
180 		output_hdr->type = TRACE_CHUNK_FUNCS;  in trace_list_functions()
184 	*needed = ptr - buff;  in trace_list_functions()
186 		return -1;  in trace_list_functions()
205 	count = hdr->ftrace_count;  in trace_list_calls()
206 	if (count > hdr->ftrace_size)  in trace_list_calls()
207 		count = hdr->ftrace_size;  in trace_list_calls()
210 			struct trace_call *call = &hdr->ftrace[rec];  in trace_list_calls()
213 			out->func = call->func * FUNC_SITE_SIZE;  in trace_list_calls()
214 			out->caller = call->caller * FUNC_SITE_SIZE;  in trace_list_calls()
215 			out->flags = call->flags;  in trace_list_calls()
223 		output_hdr->rec_count = upto;  in trace_list_calls()
224 		output_hdr->type = TRACE_CHUNK_CALLS;  in trace_list_calls()
228 	*needed = ptr - buff;  in trace_list_calls()
230 		return -1;  in trace_list_calls()
239 #ifndef FTRACE  in trace_print_stats()
240 	puts("Warning: make U-Boot with FTRACE to enable function instrumenting.\n");  in trace_print_stats()
247 	print_grouped_ull(hdr->func_count, 10);  in trace_print_stats()
249 	print_grouped_ull(hdr->call_count, 10);  in trace_print_stats()
251 	print_grouped_ull(hdr->untracked_count, 10);  in trace_print_stats()
253 	count = min(hdr->ftrace_count, hdr->ftrace_size);  in trace_print_stats()
256 	if (hdr->ftrace_count > hdr->ftrace_size) {  in trace_print_stats()
258 		       hdr->ftrace_count - hdr->ftrace_size);  in trace_print_stats()
261 	printf("%15d maximum observed call depth\n", hdr->max_depth);  in trace_print_stats()
262 	printf("%15d call depth limit\n", hdr->depth_limit);  in trace_print_stats()
263 	print_grouped_ull(hdr->ftrace_too_deep_count, 10);  in trace_print_stats()
276  * @param buff_size	Size of trace buffer
281 	ulong func_count = gd->mon_len / FUNC_SITE_SIZE;  in trace_init()
297 		end = (char *)&hdr->ftrace[hdr->ftrace_count];  in trace_init()
298 		used = end - (char *)hdr;  in trace_init()
305 		return -1;  in trace_init()
311 		printf("trace: buffer size %zd bytes: at least %zd needed\n",  in trace_init()
313 		return -1;  in trace_init()
318 	hdr->func_count = func_count;  in trace_init()
319 	hdr->call_accum = (uintptr_t *)(hdr + 1);  in trace_init()
322 	hdr->ftrace = (struct trace_call *)(buff + needed);  in trace_init()
323 	hdr->ftrace_size = (buff_size - needed) / sizeof(*hdr->ftrace);  in trace_init()
327 	hdr->depth_limit = 15;  in trace_init()
336 	ulong func_count = gd->mon_len / FUNC_SITE_SIZE;  in trace_early_init()
347 		printf("trace: buffer size is %zd bytes, at least %zd needed\n",  in trace_early_init()
349 		return -1;  in trace_early_init()
353 	hdr->call_accum = (uintptr_t *)(hdr + 1);  in trace_early_init()
354 	hdr->func_count = func_count;  in trace_early_init()
357 	hdr->ftrace = (struct trace_call *)((char *)hdr + needed);  in trace_early_init()
358 	hdr->ftrace_size = (buff_size - needed) / sizeof(*hdr->ftrace);  in trace_early_init()
360 	hdr->depth_limit = 200;  in trace_early_init()