diff options
Diffstat (limited to 'tools/lib/traceevent/plugins/plugin_function.c')
| -rw-r--r-- | tools/lib/traceevent/plugins/plugin_function.c | 282 | 
1 files changed, 0 insertions, 282 deletions
| diff --git a/tools/lib/traceevent/plugins/plugin_function.c b/tools/lib/traceevent/plugins/plugin_function.c deleted file mode 100644 index 807b16e1bf0f..000000000000 --- a/tools/lib/traceevent/plugins/plugin_function.c +++ /dev/null @@ -1,282 +0,0 @@ -// SPDX-License-Identifier: LGPL-2.1 -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <[email protected]> - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" -#include "event-utils.h" -#include "trace-seq.h" - -static struct func_stack { -	int size; -	char **stack; -} *fstack; - -static int cpus = -1; - -#define STK_BLK 10 - -struct tep_plugin_option plugin_options[] = -{ -	{ -		.name = "parent", -		.plugin_alias = "ftrace", -		.description = -		"Print parent of functions for function events", -	}, -	{ -		.name = "indent", -		.plugin_alias = "ftrace", -		.description = -		"Try to show function call indents, based on parents", -		.set = 1, -	}, -	{ -		.name = "offset", -		.plugin_alias = "ftrace", -		.description = -		"Show function names as well as their offsets", -		.set = 0, -	}, -	{ -		.name = NULL, -	} -}; - -static struct tep_plugin_option *ftrace_parent = &plugin_options[0]; -static struct tep_plugin_option *ftrace_indent = &plugin_options[1]; -static struct tep_plugin_option *ftrace_offset = &plugin_options[2]; - -static void add_child(struct func_stack *stack, const char *child, int pos) -{ -	int i; - -	if (!child) -		return; - -	if (pos < stack->size) -		free(stack->stack[pos]); -	else { -		char **ptr; - -		ptr = realloc(stack->stack, sizeof(char *) * -			      (stack->size + STK_BLK)); -		if (!ptr) { -			warning("could not allocate plugin memory\n"); -			return; -		} - -		stack->stack = ptr; - -		for (i = stack->size; i < stack->size + STK_BLK; i++) -			stack->stack[i] = NULL; -		stack->size += STK_BLK; -	} - -	stack->stack[pos] = strdup(child); -} - -static int add_and_get_index(const char *parent, const char *child, int cpu) -{ -	int i; - -	if (cpu < 0) -		return 0; - -	if (cpu > cpus) { -		struct func_stack *ptr; - -		ptr = realloc(fstack, sizeof(*fstack) * (cpu + 1)); -		if (!ptr) { -			warning("could not allocate plugin memory\n"); -			return 0; -		} - -		fstack = ptr; - -		/* Account for holes in the cpu count */ -		for (i = cpus + 1; i <= cpu; i++) -			memset(&fstack[i], 0, sizeof(fstack[i])); -		cpus = cpu; -	} - -	for (i = 0; i < fstack[cpu].size && fstack[cpu].stack[i]; i++) { -		if (strcmp(parent, fstack[cpu].stack[i]) == 0) { -			add_child(&fstack[cpu], child, i+1); -			return i; -		} -	} - -	/* Not found */ -	add_child(&fstack[cpu], parent, 0); -	add_child(&fstack[cpu], child, 1); -	return 0; -} - -static void show_function(struct trace_seq *s, struct tep_handle *tep, -			  const char *func, unsigned long long function) -{ -	unsigned long long offset; - -	trace_seq_printf(s, "%s", func); -	if (ftrace_offset->set) { -		offset = tep_find_function_address(tep, function); -		trace_seq_printf(s, "+0x%x ", (int)(function - offset)); -	} -} - -static int function_handler(struct trace_seq *s, struct tep_record *record, -			    struct tep_event *event, void *context) -{ -	struct tep_handle *tep = event->tep; -	unsigned long long function; -	unsigned long long pfunction; -	const char *func; -	const char *parent; -	int index = 0; - -	if (tep_get_field_val(s, event, "ip", record, &function, 1)) -		return trace_seq_putc(s, '!'); - -	func = tep_find_function(tep, function); - -	if (tep_get_field_val(s, event, "parent_ip", record, &pfunction, 1)) -		return trace_seq_putc(s, '!'); - -	parent = tep_find_function(tep, pfunction); - -	if (parent && ftrace_indent->set) -		index = add_and_get_index(parent, func, record->cpu); - -	trace_seq_printf(s, "%*s", index*3, ""); - -	if (func) -		show_function(s, tep, func, function); -	else -		trace_seq_printf(s, "0x%llx", function); - -	if (ftrace_parent->set) { -		trace_seq_printf(s, " <-- "); -		if (parent) -			show_function(s, tep, parent, pfunction); -		else -			trace_seq_printf(s, "0x%llx", pfunction); -	} - -	return 0; -} - -static int -trace_stack_handler(struct trace_seq *s, struct tep_record *record, -		    struct tep_event *event, void *context) -{ -	struct tep_format_field *field; -	unsigned long long addr; -	const char *func; -	int long_size; -	void *data = record->data; - -	field = tep_find_any_field(event, "caller"); -	if (!field) { -		trace_seq_printf(s, "<CANT FIND FIELD %s>", "caller"); -		return 0; -	} - -	trace_seq_puts(s, "<stack trace >\n"); - -	long_size = tep_get_long_size(event->tep); - -	for (data += field->offset; data < record->data + record->size; -	     data += long_size) { -		addr = tep_read_number(event->tep, data, long_size); - -		if ((long_size == 8 && addr == (unsigned long long)-1) || -		    ((int)addr == -1)) -			break; - -		func = tep_find_function(event->tep, addr); -		if (func) -			trace_seq_printf(s, "=> %s (%llx)\n", func, addr); -		else -			trace_seq_printf(s, "=> %llx\n", addr); -	} - -	return 0; -} - -static int -trace_raw_data_handler(struct trace_seq *s, struct tep_record *record, -		    struct tep_event *event, void *context) -{ -	struct tep_format_field *field; -	unsigned long long id; -	int long_size; -	void *data = record->data; - -	if (tep_get_field_val(s, event, "id", record, &id, 1)) -		return trace_seq_putc(s, '!'); - -	trace_seq_printf(s, "# %llx", id); - -	field = tep_find_any_field(event, "buf"); -	if (!field) { -		trace_seq_printf(s, "<CANT FIND FIELD %s>", "buf"); -		return 0; -	} - -	long_size = tep_get_long_size(event->tep); - -	for (data += field->offset; data < record->data + record->size; -	     data += long_size) { -		int size = sizeof(long); -		int left = (record->data + record->size) - data; -		int i; - -		if (size > left) -			size = left; - -		for (i = 0; i < size; i++) -			trace_seq_printf(s, " %02x", *(unsigned char *)(data + i)); -	} - -	return 0; -} - -int TEP_PLUGIN_LOADER(struct tep_handle *tep) -{ -	tep_register_event_handler(tep, -1, "ftrace", "function", -				   function_handler, NULL); - -	tep_register_event_handler(tep, -1, "ftrace", "kernel_stack", -				      trace_stack_handler, NULL); - -	tep_register_event_handler(tep, -1, "ftrace", "raw_data", -				      trace_raw_data_handler, NULL); - -	tep_plugin_add_options("ftrace", plugin_options); - -	return 0; -} - -void TEP_PLUGIN_UNLOADER(struct tep_handle *tep) -{ -	int i, x; - -	tep_unregister_event_handler(tep, -1, "ftrace", "function", -				     function_handler, NULL); - -	for (i = 0; i <= cpus; i++) { -		for (x = 0; x < fstack[i].size && fstack[i].stack[x]; x++) -			free(fstack[i].stack[x]); -		free(fstack[i].stack); -	} - -	tep_plugin_remove_options(plugin_options); - -	free(fstack); -	fstack = NULL; -	cpus = -1; -} |