diff options
Diffstat (limited to 'tools/lib/traceevent/plugin_function.c')
| -rw-r--r-- | tools/lib/traceevent/plugin_function.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/tools/lib/traceevent/plugin_function.c b/tools/lib/traceevent/plugin_function.c deleted file mode 100644 index 80ba4ff1fe84..000000000000 --- a/tools/lib/traceevent/plugin_function.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License (not later!) - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see <http://www.gnu.org/licenses> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "event-parse.h" -#include "event-utils.h" - -static struct func_stack { - int size; - char **stack; -} *fstack; - -static int cpus = -1; - -#define STK_BLK 10 - -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 int function_handler(struct trace_seq *s, struct pevent_record *record, - struct event_format *event, void *context) -{ - struct pevent *pevent = event->pevent; - unsigned long long function; - unsigned long long pfunction; - const char *func; - const char *parent; - int index; - - if (pevent_get_field_val(s, event, "ip", record, &function, 1)) - return trace_seq_putc(s, '!'); - - func = pevent_find_function(pevent, function); - - if (pevent_get_field_val(s, event, "parent_ip", record, &pfunction, 1)) - return trace_seq_putc(s, '!'); - - parent = pevent_find_function(pevent, pfunction); - - index = add_and_get_index(parent, func, record->cpu); - - trace_seq_printf(s, "%*s", index*3, ""); - - if (func) - trace_seq_printf(s, "%s", func); - else - trace_seq_printf(s, "0x%llx", function); - - trace_seq_printf(s, " <-- "); - if (parent) - trace_seq_printf(s, "%s", parent); - else - trace_seq_printf(s, "0x%llx", pfunction); - - return 0; -} - -int PEVENT_PLUGIN_LOADER(struct pevent *pevent) -{ - pevent_register_event_handler(pevent, -1, "ftrace", "function", - function_handler, NULL); - return 0; -} - -void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) -{ - int i, x; - - pevent_unregister_event_handler(pevent, -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); - } - - free(fstack); - fstack = NULL; - cpus = -1; -} |