mirror of https://gitee.com/openkylin/linux.git
812 lines
19 KiB
C
812 lines
19 KiB
C
/*
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* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License (not later!)
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#ifndef _PARSE_EVENTS_H
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#define _PARSE_EVENTS_H
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#include <stdarg.h>
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#include <regex.h>
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#ifndef __unused
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#define __unused __attribute__ ((unused))
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#endif
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/* ----------------------- trace_seq ----------------------- */
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#ifndef TRACE_SEQ_BUF_SIZE
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#define TRACE_SEQ_BUF_SIZE 4096
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#endif
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#ifndef DEBUG_RECORD
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#define DEBUG_RECORD 0
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#endif
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struct pevent_record {
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unsigned long long ts;
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unsigned long long offset;
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long long missed_events; /* buffer dropped events before */
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int record_size; /* size of binary record */
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int size; /* size of data */
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void *data;
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int cpu;
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int ref_count;
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int locked; /* Do not free, even if ref_count is zero */
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void *private;
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#if DEBUG_RECORD
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struct pevent_record *prev;
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struct pevent_record *next;
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long alloc_addr;
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#endif
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};
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/*
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* Trace sequences are used to allow a function to call several other functions
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* to create a string of data to use (up to a max of PAGE_SIZE).
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*/
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struct trace_seq {
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char *buffer;
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unsigned int buffer_size;
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unsigned int len;
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unsigned int readpos;
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};
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void trace_seq_init(struct trace_seq *s);
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void trace_seq_destroy(struct trace_seq *s);
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extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
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__attribute__ ((format (printf, 2, 3)));
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extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
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__attribute__ ((format (printf, 2, 0)));
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extern int trace_seq_puts(struct trace_seq *s, const char *str);
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extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
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extern void trace_seq_terminate(struct trace_seq *s);
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extern int trace_seq_do_printf(struct trace_seq *s);
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/* ----------------------- pevent ----------------------- */
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struct pevent;
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struct event_format;
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typedef int (*pevent_event_handler_func)(struct trace_seq *s,
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struct pevent_record *record,
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struct event_format *event,
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void *context);
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typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
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typedef int (*pevent_plugin_unload_func)(void);
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struct plugin_option {
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struct plugin_option *next;
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void *handle;
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char *file;
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char *name;
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char *plugin_alias;
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char *description;
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char *value;
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void *private;
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int set;
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};
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/*
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* Plugin hooks that can be called:
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*
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* PEVENT_PLUGIN_LOADER: (required)
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* The function name to initialized the plugin.
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*
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* int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
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*
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* PEVENT_PLUGIN_UNLOADER: (optional)
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* The function called just before unloading
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*
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* int PEVENT_PLUGIN_UNLOADER(void)
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*
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* PEVENT_PLUGIN_OPTIONS: (optional)
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* Plugin options that can be set before loading
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*
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* struct plugin_option PEVENT_PLUGIN_OPTIONS[] = {
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* {
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* .name = "option-name",
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* .plugin_alias = "overide-file-name", (optional)
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* .description = "description of option to show users",
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* },
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* {
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* .name = NULL,
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* },
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* };
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*
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* Array must end with .name = NULL;
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*
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*
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* .plugin_alias is used to give a shorter name to access
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* the vairable. Useful if a plugin handles more than one event.
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*
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* PEVENT_PLUGIN_ALIAS: (optional)
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* The name to use for finding options (uses filename if not defined)
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*/
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#define PEVENT_PLUGIN_LOADER pevent_plugin_loader
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#define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader
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#define PEVENT_PLUGIN_OPTIONS pevent_plugin_options
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#define PEVENT_PLUGIN_ALIAS pevent_plugin_alias
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#define _MAKE_STR(x) #x
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#define MAKE_STR(x) _MAKE_STR(x)
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#define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER)
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#define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER)
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#define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS)
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#define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS)
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#define NSECS_PER_SEC 1000000000ULL
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#define NSECS_PER_USEC 1000ULL
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enum format_flags {
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FIELD_IS_ARRAY = 1,
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FIELD_IS_POINTER = 2,
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FIELD_IS_SIGNED = 4,
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FIELD_IS_STRING = 8,
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FIELD_IS_DYNAMIC = 16,
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FIELD_IS_LONG = 32,
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FIELD_IS_FLAG = 64,
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FIELD_IS_SYMBOLIC = 128,
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};
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struct format_field {
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struct format_field *next;
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struct event_format *event;
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char *type;
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char *name;
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int offset;
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int size;
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unsigned int arraylen;
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unsigned int elementsize;
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unsigned long flags;
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};
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struct format {
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int nr_common;
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int nr_fields;
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struct format_field *common_fields;
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struct format_field *fields;
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};
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struct print_arg_atom {
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char *atom;
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};
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struct print_arg_string {
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char *string;
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int offset;
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};
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struct print_arg_field {
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char *name;
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struct format_field *field;
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};
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struct print_flag_sym {
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struct print_flag_sym *next;
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char *value;
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char *str;
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};
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struct print_arg_typecast {
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char *type;
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struct print_arg *item;
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};
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struct print_arg_flags {
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struct print_arg *field;
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char *delim;
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struct print_flag_sym *flags;
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};
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struct print_arg_symbol {
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struct print_arg *field;
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struct print_flag_sym *symbols;
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};
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struct print_arg_hex {
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struct print_arg *field;
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struct print_arg *size;
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};
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struct print_arg_dynarray {
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struct format_field *field;
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struct print_arg *index;
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};
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struct print_arg;
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struct print_arg_op {
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char *op;
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int prio;
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struct print_arg *left;
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struct print_arg *right;
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};
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struct pevent_function_handler;
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struct print_arg_func {
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struct pevent_function_handler *func;
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struct print_arg *args;
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};
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enum print_arg_type {
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PRINT_NULL,
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PRINT_ATOM,
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PRINT_FIELD,
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PRINT_FLAGS,
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PRINT_SYMBOL,
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PRINT_HEX,
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PRINT_TYPE,
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PRINT_STRING,
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PRINT_BSTRING,
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PRINT_DYNAMIC_ARRAY,
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PRINT_OP,
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PRINT_FUNC,
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};
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struct print_arg {
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struct print_arg *next;
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enum print_arg_type type;
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union {
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struct print_arg_atom atom;
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struct print_arg_field field;
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struct print_arg_typecast typecast;
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struct print_arg_flags flags;
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struct print_arg_symbol symbol;
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struct print_arg_hex hex;
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struct print_arg_func func;
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struct print_arg_string string;
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struct print_arg_op op;
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struct print_arg_dynarray dynarray;
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};
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};
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struct print_fmt {
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char *format;
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struct print_arg *args;
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};
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struct event_format {
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struct pevent *pevent;
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char *name;
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int id;
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int flags;
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struct format format;
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struct print_fmt print_fmt;
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char *system;
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pevent_event_handler_func handler;
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void *context;
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};
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enum {
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EVENT_FL_ISFTRACE = 0x01,
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EVENT_FL_ISPRINT = 0x02,
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EVENT_FL_ISBPRINT = 0x04,
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EVENT_FL_ISFUNCENT = 0x10,
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EVENT_FL_ISFUNCRET = 0x20,
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EVENT_FL_FAILED = 0x80000000
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};
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enum event_sort_type {
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EVENT_SORT_ID,
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EVENT_SORT_NAME,
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EVENT_SORT_SYSTEM,
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};
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enum event_type {
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EVENT_ERROR,
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EVENT_NONE,
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EVENT_SPACE,
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EVENT_NEWLINE,
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EVENT_OP,
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EVENT_DELIM,
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EVENT_ITEM,
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EVENT_DQUOTE,
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EVENT_SQUOTE,
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};
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typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
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unsigned long long *args);
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enum pevent_func_arg_type {
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PEVENT_FUNC_ARG_VOID,
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PEVENT_FUNC_ARG_INT,
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PEVENT_FUNC_ARG_LONG,
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PEVENT_FUNC_ARG_STRING,
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PEVENT_FUNC_ARG_PTR,
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PEVENT_FUNC_ARG_MAX_TYPES
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};
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enum pevent_flag {
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PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */
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};
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struct cmdline;
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struct cmdline_list;
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struct func_map;
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struct func_list;
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struct event_handler;
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struct pevent {
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int ref_count;
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int header_page_ts_offset;
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int header_page_ts_size;
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int header_page_size_offset;
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int header_page_size_size;
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int header_page_data_offset;
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int header_page_data_size;
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int header_page_overwrite;
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int file_bigendian;
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int host_bigendian;
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int latency_format;
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int old_format;
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int cpus;
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int long_size;
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struct cmdline *cmdlines;
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struct cmdline_list *cmdlist;
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int cmdline_count;
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struct func_map *func_map;
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struct func_list *funclist;
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unsigned int func_count;
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struct printk_map *printk_map;
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struct printk_list *printklist;
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unsigned int printk_count;
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struct event_format **events;
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int nr_events;
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struct event_format **sort_events;
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enum event_sort_type last_type;
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int type_offset;
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int type_size;
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int pid_offset;
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int pid_size;
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int pc_offset;
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int pc_size;
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int flags_offset;
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int flags_size;
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int ld_offset;
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int ld_size;
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int print_raw;
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int test_filters;
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int flags;
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struct format_field *bprint_ip_field;
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struct format_field *bprint_fmt_field;
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struct format_field *bprint_buf_field;
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struct event_handler *handlers;
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struct pevent_function_handler *func_handlers;
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/* cache */
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struct event_format *last_event;
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};
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static inline void pevent_set_flag(struct pevent *pevent, int flag)
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{
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pevent->flags |= flag;
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}
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static inline unsigned short
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__data2host2(struct pevent *pevent, unsigned short data)
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{
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unsigned short swap;
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if (pevent->host_bigendian == pevent->file_bigendian)
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return data;
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swap = ((data & 0xffULL) << 8) |
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((data & (0xffULL << 8)) >> 8);
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return swap;
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}
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static inline unsigned int
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__data2host4(struct pevent *pevent, unsigned int data)
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{
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unsigned int swap;
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if (pevent->host_bigendian == pevent->file_bigendian)
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return data;
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swap = ((data & 0xffULL) << 24) |
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((data & (0xffULL << 8)) << 8) |
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((data & (0xffULL << 16)) >> 8) |
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((data & (0xffULL << 24)) >> 24);
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return swap;
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}
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static inline unsigned long long
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__data2host8(struct pevent *pevent, unsigned long long data)
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{
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unsigned long long swap;
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if (pevent->host_bigendian == pevent->file_bigendian)
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return data;
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swap = ((data & 0xffULL) << 56) |
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((data & (0xffULL << 8)) << 40) |
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((data & (0xffULL << 16)) << 24) |
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((data & (0xffULL << 24)) << 8) |
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((data & (0xffULL << 32)) >> 8) |
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((data & (0xffULL << 40)) >> 24) |
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((data & (0xffULL << 48)) >> 40) |
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((data & (0xffULL << 56)) >> 56);
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return swap;
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}
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#define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr))
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#define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr))
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#define data2host8(pevent, ptr) \
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({ \
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unsigned long long __val; \
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\
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memcpy(&__val, (ptr), sizeof(unsigned long long)); \
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__data2host8(pevent, __val); \
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})
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/* taken from kernel/trace/trace.h */
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enum trace_flag_type {
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TRACE_FLAG_IRQS_OFF = 0x01,
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TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
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TRACE_FLAG_NEED_RESCHED = 0x04,
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TRACE_FLAG_HARDIRQ = 0x08,
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TRACE_FLAG_SOFTIRQ = 0x10,
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};
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int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
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int pevent_register_function(struct pevent *pevent, char *name,
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unsigned long long addr, char *mod);
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int pevent_register_print_string(struct pevent *pevent, char *fmt,
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unsigned long long addr);
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int pevent_pid_is_registered(struct pevent *pevent, int pid);
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void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
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struct pevent_record *record);
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int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
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int long_size);
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int pevent_parse_event(struct pevent *pevent, const char *buf,
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unsigned long size, const char *sys);
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void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
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const char *name, struct pevent_record *record,
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int *len, int err);
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int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
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const char *name, struct pevent_record *record,
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unsigned long long *val, int err);
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int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
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const char *name, struct pevent_record *record,
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unsigned long long *val, int err);
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int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
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const char *name, struct pevent_record *record,
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unsigned long long *val, int err);
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int pevent_print_num_field(struct trace_seq *s, const char *fmt,
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struct event_format *event, const char *name,
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struct pevent_record *record, int err);
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int pevent_register_event_handler(struct pevent *pevent, int id, char *sys_name, char *event_name,
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pevent_event_handler_func func, void *context);
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int pevent_register_print_function(struct pevent *pevent,
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pevent_func_handler func,
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enum pevent_func_arg_type ret_type,
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char *name, ...);
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struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
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struct format_field *pevent_find_field(struct event_format *event, const char *name);
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struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
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const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
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unsigned long long
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pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
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unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
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int pevent_read_number_field(struct format_field *field, const void *data,
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unsigned long long *value);
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struct event_format *pevent_find_event(struct pevent *pevent, int id);
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struct event_format *
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pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
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void pevent_data_lat_fmt(struct pevent *pevent,
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struct trace_seq *s, struct pevent_record *record);
|
|
int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
|
|
struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
|
|
int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
|
|
const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
|
|
void pevent_event_info(struct trace_seq *s, struct event_format *event,
|
|
struct pevent_record *record);
|
|
|
|
struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
|
|
struct format_field **pevent_event_common_fields(struct event_format *event);
|
|
struct format_field **pevent_event_fields(struct event_format *event);
|
|
|
|
static inline int pevent_get_cpus(struct pevent *pevent)
|
|
{
|
|
return pevent->cpus;
|
|
}
|
|
|
|
static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
|
|
{
|
|
pevent->cpus = cpus;
|
|
}
|
|
|
|
static inline int pevent_get_long_size(struct pevent *pevent)
|
|
{
|
|
return pevent->long_size;
|
|
}
|
|
|
|
static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
|
|
{
|
|
pevent->long_size = long_size;
|
|
}
|
|
|
|
static inline int pevent_is_file_bigendian(struct pevent *pevent)
|
|
{
|
|
return pevent->file_bigendian;
|
|
}
|
|
|
|
static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
|
|
{
|
|
pevent->file_bigendian = endian;
|
|
}
|
|
|
|
static inline int pevent_is_host_bigendian(struct pevent *pevent)
|
|
{
|
|
return pevent->host_bigendian;
|
|
}
|
|
|
|
static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
|
|
{
|
|
pevent->host_bigendian = endian;
|
|
}
|
|
|
|
static inline int pevent_is_latency_format(struct pevent *pevent)
|
|
{
|
|
return pevent->latency_format;
|
|
}
|
|
|
|
static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
|
|
{
|
|
pevent->latency_format = lat;
|
|
}
|
|
|
|
struct pevent *pevent_alloc(void);
|
|
void pevent_free(struct pevent *pevent);
|
|
void pevent_ref(struct pevent *pevent);
|
|
void pevent_unref(struct pevent *pevent);
|
|
|
|
/* access to the internal parser */
|
|
void pevent_buffer_init(const char *buf, unsigned long long size);
|
|
enum event_type pevent_read_token(char **tok);
|
|
void pevent_free_token(char *token);
|
|
int pevent_peek_char(void);
|
|
const char *pevent_get_input_buf(void);
|
|
unsigned long long pevent_get_input_buf_ptr(void);
|
|
|
|
/* for debugging */
|
|
void pevent_print_funcs(struct pevent *pevent);
|
|
void pevent_print_printk(struct pevent *pevent);
|
|
|
|
/* ----------------------- filtering ----------------------- */
|
|
|
|
enum filter_boolean_type {
|
|
FILTER_FALSE,
|
|
FILTER_TRUE,
|
|
};
|
|
|
|
enum filter_op_type {
|
|
FILTER_OP_AND = 1,
|
|
FILTER_OP_OR,
|
|
FILTER_OP_NOT,
|
|
};
|
|
|
|
enum filter_cmp_type {
|
|
FILTER_CMP_NONE,
|
|
FILTER_CMP_EQ,
|
|
FILTER_CMP_NE,
|
|
FILTER_CMP_GT,
|
|
FILTER_CMP_LT,
|
|
FILTER_CMP_GE,
|
|
FILTER_CMP_LE,
|
|
FILTER_CMP_MATCH,
|
|
FILTER_CMP_NOT_MATCH,
|
|
FILTER_CMP_REGEX,
|
|
FILTER_CMP_NOT_REGEX,
|
|
};
|
|
|
|
enum filter_exp_type {
|
|
FILTER_EXP_NONE,
|
|
FILTER_EXP_ADD,
|
|
FILTER_EXP_SUB,
|
|
FILTER_EXP_MUL,
|
|
FILTER_EXP_DIV,
|
|
FILTER_EXP_MOD,
|
|
FILTER_EXP_RSHIFT,
|
|
FILTER_EXP_LSHIFT,
|
|
FILTER_EXP_AND,
|
|
FILTER_EXP_OR,
|
|
FILTER_EXP_XOR,
|
|
FILTER_EXP_NOT,
|
|
};
|
|
|
|
enum filter_arg_type {
|
|
FILTER_ARG_NONE,
|
|
FILTER_ARG_BOOLEAN,
|
|
FILTER_ARG_VALUE,
|
|
FILTER_ARG_FIELD,
|
|
FILTER_ARG_EXP,
|
|
FILTER_ARG_OP,
|
|
FILTER_ARG_NUM,
|
|
FILTER_ARG_STR,
|
|
};
|
|
|
|
enum filter_value_type {
|
|
FILTER_NUMBER,
|
|
FILTER_STRING,
|
|
FILTER_CHAR
|
|
};
|
|
|
|
struct fliter_arg;
|
|
|
|
struct filter_arg_boolean {
|
|
enum filter_boolean_type value;
|
|
};
|
|
|
|
struct filter_arg_field {
|
|
struct format_field *field;
|
|
};
|
|
|
|
struct filter_arg_value {
|
|
enum filter_value_type type;
|
|
union {
|
|
char *str;
|
|
unsigned long long val;
|
|
};
|
|
};
|
|
|
|
struct filter_arg_op {
|
|
enum filter_op_type type;
|
|
struct filter_arg *left;
|
|
struct filter_arg *right;
|
|
};
|
|
|
|
struct filter_arg_exp {
|
|
enum filter_exp_type type;
|
|
struct filter_arg *left;
|
|
struct filter_arg *right;
|
|
};
|
|
|
|
struct filter_arg_num {
|
|
enum filter_cmp_type type;
|
|
struct filter_arg *left;
|
|
struct filter_arg *right;
|
|
};
|
|
|
|
struct filter_arg_str {
|
|
enum filter_cmp_type type;
|
|
struct format_field *field;
|
|
char *val;
|
|
char *buffer;
|
|
regex_t reg;
|
|
};
|
|
|
|
struct filter_arg {
|
|
enum filter_arg_type type;
|
|
union {
|
|
struct filter_arg_boolean boolean;
|
|
struct filter_arg_field field;
|
|
struct filter_arg_value value;
|
|
struct filter_arg_op op;
|
|
struct filter_arg_exp exp;
|
|
struct filter_arg_num num;
|
|
struct filter_arg_str str;
|
|
};
|
|
};
|
|
|
|
struct filter_type {
|
|
int event_id;
|
|
struct event_format *event;
|
|
struct filter_arg *filter;
|
|
};
|
|
|
|
struct event_filter {
|
|
struct pevent *pevent;
|
|
int filters;
|
|
struct filter_type *event_filters;
|
|
};
|
|
|
|
struct event_filter *pevent_filter_alloc(struct pevent *pevent);
|
|
|
|
#define FILTER_NONE -2
|
|
#define FILTER_NOEXIST -1
|
|
#define FILTER_MISS 0
|
|
#define FILTER_MATCH 1
|
|
|
|
enum filter_trivial_type {
|
|
FILTER_TRIVIAL_FALSE,
|
|
FILTER_TRIVIAL_TRUE,
|
|
FILTER_TRIVIAL_BOTH,
|
|
};
|
|
|
|
int pevent_filter_add_filter_str(struct event_filter *filter,
|
|
const char *filter_str,
|
|
char **error_str);
|
|
|
|
|
|
int pevent_filter_match(struct event_filter *filter,
|
|
struct pevent_record *record);
|
|
|
|
int pevent_event_filtered(struct event_filter *filter,
|
|
int event_id);
|
|
|
|
void pevent_filter_reset(struct event_filter *filter);
|
|
|
|
void pevent_filter_clear_trivial(struct event_filter *filter,
|
|
enum filter_trivial_type type);
|
|
|
|
void pevent_filter_free(struct event_filter *filter);
|
|
|
|
char *pevent_filter_make_string(struct event_filter *filter, int event_id);
|
|
|
|
int pevent_filter_remove_event(struct event_filter *filter,
|
|
int event_id);
|
|
|
|
int pevent_filter_event_has_trivial(struct event_filter *filter,
|
|
int event_id,
|
|
enum filter_trivial_type type);
|
|
|
|
int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
|
|
|
|
int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
|
|
enum filter_trivial_type type);
|
|
|
|
int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
|
|
|
|
#endif /* _PARSE_EVENTS_H */
|