1 // SPDX-License-Identifier: LGPL-2.1
9 #include "event-parse.h"
10 #include "event-utils.h"
11 #include "trace-seq.h"
18 static int cpus = -1;
38 		.name = "offset",
60 	if (pos < stack->size)  in add_child()
61 		free(stack->stack[pos]);  in add_child()
65 		ptr = realloc(stack->stack, sizeof(char *) *  in add_child()
66 			      (stack->size + STK_BLK));  in add_child()
72 		stack->stack = ptr;  in add_child()
74 		for (i = stack->size; i < stack->size + STK_BLK; i++)  in add_child()
75 			stack->stack[i] = NULL;  in add_child()
76 		stack->size += STK_BLK;  in add_child()
79 	stack->stack[pos] = strdup(child);  in add_child()
82 static int add_and_get_index(const char *parent, const char *child, int cpu)  in add_and_get_index()  argument
86 	if (cpu < 0)  in add_and_get_index()
89 	if (cpu > cpus) {  in add_and_get_index()
92 		ptr = realloc(fstack, sizeof(*fstack) * (cpu + 1));  in add_and_get_index()
100 		/* Account for holes in the cpu count */  in add_and_get_index()
101 		for (i = cpus + 1; i <= cpu; i++)  in add_and_get_index()
103 		cpus = cpu;  in add_and_get_index()
106 	for (i = 0; i < fstack[cpu].size && fstack[cpu].stack[i]; i++) {  in add_and_get_index()
107 		if (strcmp(parent, fstack[cpu].stack[i]) == 0) {  in add_and_get_index()
108 			add_child(&fstack[cpu], child, i+1);  in add_and_get_index()
114 	add_child(&fstack[cpu], parent, 0);  in add_and_get_index()
115 	add_child(&fstack[cpu], child, 1);  in add_and_get_index()
122 	unsigned long long offset;  in show_function()  local
125 	if (ftrace_offset->set) {  in show_function()
126 		offset = tep_find_function_address(tep, function);  in show_function()
127 		trace_seq_printf(s, "+0x%x ", (int)(function - offset));  in show_function()
134 	struct tep_handle *tep = event->tep;  in function_handler()
151 	if (parent && ftrace_indent->set)  in function_handler()
152 		index = add_and_get_index(parent, func, record->cpu);  in function_handler()
161 	if (ftrace_parent->set) {  in function_handler()
162 		trace_seq_printf(s, " <-- ");  in function_handler()
180 	void *data = record->data;  in trace_stack_handler()
190 	long_size = tep_get_long_size(event->tep);  in trace_stack_handler()
192 	for (data += field->offset; data < record->data + record->size;  in trace_stack_handler()
194 		addr = tep_read_number(event->tep, data, long_size);  in trace_stack_handler()
196 		if ((long_size == 8 && addr == (unsigned long long)-1) ||  in trace_stack_handler()
197 		    ((int)addr == -1))  in trace_stack_handler()
200 		func = tep_find_function(event->tep, addr);  in trace_stack_handler()
217 	void *data = record->data;  in trace_raw_data_handler()
230 	long_size = tep_get_long_size(event->tep);  in trace_raw_data_handler()
232 	for (data += field->offset; data < record->data + record->size;  in trace_raw_data_handler()
235 		int left = (record->data + record->size) - data;  in trace_raw_data_handler()
250 	tep_register_event_handler(tep, -1, "ftrace", "function",  in TEP_PLUGIN_LOADER()
253 	tep_register_event_handler(tep, -1, "ftrace", "kernel_stack",  in TEP_PLUGIN_LOADER()
256 	tep_register_event_handler(tep, -1, "ftrace", "raw_data",  in TEP_PLUGIN_LOADER()
268 	tep_unregister_event_handler(tep, -1, "ftrace", "function",  in TEP_PLUGIN_UNLOADER()
281 	cpus = -1;  in TEP_PLUGIN_UNLOADER()