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tools/events: Add files to create libtraceevent.a

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Copy over the files from trace-cmd to the Linux tools directory
such that applications like perf and latencytrace can use the
more advanced parsing code.

Because some of the file names of perf conflict with trace-cmd file
names, the trace-cmd files have been renamed as follows:

 parse-events.c ==> event-parse.c
 parse-events.h ==> event-parse.h
 utils.h        ==> event-utils.h

The files have been updated to handle the changes to the header files
but other than that, they are identical to what was in the trace-cmd
repository. The history of these files, including authorship is
available at the git repo:

 git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

The Makefile was also copied over, but most of it was removed to
focus on the parse-events code first. The parts of the Makefile for
the plugins have also been removed, but will be added back when the
plugin code is copied over as well. But that may be in its own
separate directory.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Arun Sharma <asharma@fb.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Steven Rostedt 2012-04-06 00:47:53 +02:00 committed by Frederic Weisbecker
parent 4ace73eef5
commit f7d82350e5
7 changed files with 8715 additions and 0 deletions
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303
tools/lib/traceevent/Makefile Normal file
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# trace-cmd version
EP_VERSION = 1
EP_PATCHLEVEL = 1
EP_EXTRAVERSION = 0
# file format version
FILE_VERSION = 6
MAKEFLAGS += --no-print-directory
# Makefiles suck: This macro sets a default value of $(2) for the
# variable named by $(1), unless the variable has been set by
# environment or command line. This is necessary for CC and AR
# because make sets default values, so the simpler ?= approach
# won't work as expected.
define allow-override
$(if $(or $(findstring environment,$(origin $(1))),\
$(findstring command line,$(origin $(1)))),,\
$(eval $(1) = $(2)))
endef
# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
$(call allow-override,CC,$(CROSS_COMPILE)gcc)
$(call allow-override,AR,$(CROSS_COMPILE)ar)
EXT = -std=gnu99
INSTALL = install
# Use DESTDIR for installing into a different root directory.
# This is useful for building a package. The program will be
# installed in this directory as if it was the root directory.
# Then the build tool can move it later.
DESTDIR ?=
DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
prefix ?= /usr/local
bindir_relative = bin
bindir = $(prefix)/$(bindir_relative)
man_dir = $(prefix)/share/man
man_dir_SQ = '$(subst ','\'',$(man_dir))'
html_install = $(prefix)/share/kernelshark/html
html_install_SQ = '$(subst ','\'',$(html_install))'
img_install = $(prefix)/share/kernelshark/html/images
img_install_SQ = '$(subst ','\'',$(img_install))'
export man_dir man_dir_SQ html_install html_install_SQ INSTALL
export img_install img_install_SQ
export DESTDIR DESTDIR_SQ
# copy a bit from Linux kbuild
ifeq ("$(origin V)", "command line")
VERBOSE = $(V)
endif
ifndef VERBOSE
VERBOSE = 0
endif
ifeq ("$(origin O)", "command line")
BUILD_OUTPUT := $(O)
endif
ifeq ($(BUILD_SRC),)
ifneq ($(BUILD_OUTPUT),)
define build_output
$(if $(VERBOSE:1=),@)$(MAKE) -C $(BUILD_OUTPUT) \
BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1
endef
saved-output := $(BUILD_OUTPUT)
BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd)
$(if $(BUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
all: sub-make
gui: force
$(call build_output, all_cmd)
$(filter-out gui,$(MAKECMDGOALS)): sub-make
sub-make: force
$(call build_output, $(MAKECMDGOALS))
# Leave processing to above invocation of make
skip-makefile := 1
endif # BUILD_OUTPUT
endif # BUILD_SRC
# We process the rest of the Makefile if this is the final invocation of make
ifeq ($(skip-makefile),)
srctree := $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR))
objtree := $(CURDIR)
src := $(srctree)
obj := $(objtree)
export prefix bindir src obj
# Shell quotes
bindir_SQ = $(subst ','\'',$(bindir))
bindir_relative_SQ = $(subst ','\'',$(bindir_relative))
LIB_FILE = libtraceevent.a libtraceevent.so
CONFIG_INCLUDES =
CONFIG_LIBS =
CONFIG_FLAGS =
VERSION = $(EP_VERSION)
PATCHLEVEL = $(EP_PATCHLEVEL)
EXTRAVERSION = $(EP_EXTRAVERSION)
OBJ = $@
N =
export Q VERBOSE
EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
INCLUDES = -I. -I/usr/local/include $(CONFIG_INCLUDES)
# Set compile option CFLAGS if not set elsewhere
CFLAGS ?= -g -Wall
# Append required CFLAGS
override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
override CFLAGS += $(udis86-flags)
ifeq ($(VERBOSE),1)
Q =
print_compile =
print_app_build =
print_fpic_compile =
print_shared_lib_compile =
print_plugin_obj_compile =
print_plugin_build =
print_install =
else
Q = @
print_compile = echo ' CC '$(OBJ);
print_app_build = echo ' BUILD '$(OBJ);
print_fpic_compile = echo ' CC FPIC '$(OBJ);
print_shared_lib_compile = echo ' BUILD SHARED LIB '$(OBJ);
print_plugin_obj_compile = echo ' CC PLUGIN OBJ '$(OBJ);
print_plugin_build = echo ' CC PLUGI '$(OBJ);
print_static_lib_build = echo ' BUILD STATIC LIB '$(OBJ);
print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2';
endif
do_fpic_compile = \
($(print_fpic_compile) \
$(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@)
do_app_build = \
($(print_app_build) \
$(CC) $^ -rdynamic -o $@ $(CONFIG_LIBS) $(LIBS))
do_compile_shared_library = \
($(print_shared_lib_compile) \
$(CC) --shared $^ -o $@)
do_compile_plugin_obj = \
($(print_plugin_obj_compile) \
$(CC) -c $(CFLAGS) -fPIC -o $@ $<)
do_plugin_build = \
($(print_plugin_build) \
$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $<)
do_build_static_lib = \
($(print_static_lib_build) \
$(RM) $@; $(AR) rcs $@ $^)
define do_compile
$(print_compile) \
$(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@;
endef
$(obj)/%.o: $(src)/%.c
$(Q)$(call do_compile)
%.o: $(src)/%.c
$(Q)$(call do_compile)
PEVENT_LIB_OBJS = event-parse.o trace-seq.o parse-filter.o parse-utils.o
ALL_OBJS = $(PEVENT_LIB_OBJS)
CMD_TARGETS = $(LIB_FILE)
TARGETS = $(CMD_TARGETS)
all: all_cmd
all_cmd: $(CMD_TARGETS)
libtraceevent.so: $(PEVENT_LIB_OBJS)
$(Q)$(do_compile_shared_library)
libtraceevent.a: $(PEVENT_LIB_OBJS)
$(Q)$(do_build_static_lib)
$(PEVENT_LIB_OBJS): %.o: $(src)/%.c
$(Q)$(do_fpic_compile)
define make_version.h
(echo '/* This file is automatically generated. Do not modify. */'; \
echo \#define VERSION_CODE $(shell \
expr $(VERSION) \* 256 + $(PATCHLEVEL)); \
echo '#define EXTRAVERSION ' $(EXTRAVERSION); \
echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \
echo '#define FILE_VERSION '$(FILE_VERSION); \
) > $1
endef
define update_version.h
($(call make_version.h, $@.tmp); \
if [ -r $@ ] && cmp -s $@ $@.tmp; then \
rm -f $@.tmp; \
else \
echo ' UPDATE $@'; \
mv -f $@.tmp $@; \
fi);
endef
ep_version.h: force
$(Q)$(N)$(call update_version.h)
VERSION_FILES = ep_version.h
define update_dir
(echo $1 > $@.tmp; \
if [ -r $@ ] && cmp -s $@ $@.tmp; then \
rm -f $@.tmp; \
else \
echo ' UPDATE $@'; \
mv -f $@.tmp $@; \
fi);
endef
## make deps
all_objs := $(sort $(ALL_OBJS))
all_deps := $(all_objs:%.o=.%.d)
define check_deps
$(CC) -M $(CFLAGS) $< > $@;
endef
$(gui_deps): ks_version.h
$(non_gui_deps): tc_version.h
$(all_deps): .%.d: $(src)/%.c
$(Q)$(call check_deps)
$(all_objs) : %.o : .%.d
dep_includes := $(wildcard $(all_deps))
ifneq ($(dep_includes),)
include $(dep_includes)
endif
tags: force
$(RM) tags
find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px
TAGS: force
$(RM) TAGS
find . -name '*.[ch]' | xargs etags
define do_install
$(print_install) \
if [ ! -d '$(DESTDIR_SQ)$2' ]; then \
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
fi; \
$(INSTALL) $1 '$(DESTDIR_SQ)$2'
endef
install_lib: all_cmd install_plugins install_python
$(Q)$(call do_install,$(LIB_FILE),$(bindir_SQ))
install: install_lib
clean:
$(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES).*.d
$(RM) tags TAGS
endif # skip-makefile
PHONY += force
force:
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable so we can use it in if_changed and friends.
.PHONY: $(PHONY)

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/*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#ifndef _PARSE_EVENTS_H
#define _PARSE_EVENTS_H
#include <stdarg.h>
#include <regex.h>
#ifndef __unused
#define __unused __attribute__ ((unused))
#endif
/* ----------------------- trace_seq ----------------------- */
#ifndef TRACE_SEQ_BUF_SIZE
#define TRACE_SEQ_BUF_SIZE 4096
#endif
#ifndef DEBUG_RECORD
#define DEBUG_RECORD 0
#endif
struct record {
unsigned long long ts;
unsigned long long offset;
long long missed_events; /* buffer dropped events before */
int record_size; /* size of binary record */
int size; /* size of data */
void *data;
int cpu;
int ref_count;
int locked; /* Do not free, even if ref_count is zero */
void *private;
#if DEBUG_RECORD
struct record *prev;
struct record *next;
long alloc_addr;
#endif
};
/*
* Trace sequences are used to allow a function to call several other functions
* to create a string of data to use (up to a max of PAGE_SIZE).
*/
struct trace_seq {
char *buffer;
unsigned int buffer_size;
unsigned int len;
unsigned int readpos;
};
void trace_seq_init(struct trace_seq *s);
void trace_seq_destroy(struct trace_seq *s);
extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
__attribute__ ((format (printf, 2, 3)));
extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
__attribute__ ((format (printf, 2, 0)));
extern int trace_seq_puts(struct trace_seq *s, const char *str);
extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
extern void trace_seq_terminate(struct trace_seq *s);
extern int trace_seq_do_printf(struct trace_seq *s);
/* ----------------------- pevent ----------------------- */
struct pevent;
struct event_format;
typedef int (*pevent_event_handler_func)(struct trace_seq *s,
struct record *record,
struct event_format *event,
void *context);
typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
typedef int (*pevent_plugin_unload_func)(void);
struct plugin_option {
struct plugin_option *next;
void *handle;
char *file;
char *name;
char *plugin_alias;
char *description;
char *value;
void *private;
int set;
};
/*
* Plugin hooks that can be called:
*
* PEVENT_PLUGIN_LOADER: (required)
* The function name to initialized the plugin.
*
* int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
*
* PEVENT_PLUGIN_UNLOADER: (optional)
* The function called just before unloading
*
* int PEVENT_PLUGIN_UNLOADER(void)
*
* PEVENT_PLUGIN_OPTIONS: (optional)
* Plugin options that can be set before loading
*
* struct plugin_option PEVENT_PLUGIN_OPTIONS[] = {
* {
* .name = "option-name",
* .plugin_alias = "overide-file-name", (optional)
* .description = "description of option to show users",
* },
* {
* .name = NULL,
* },
* };
*
* Array must end with .name = NULL;
*
*
* .plugin_alias is used to give a shorter name to access
* the vairable. Useful if a plugin handles more than one event.
*
* PEVENT_PLUGIN_ALIAS: (optional)
* The name to use for finding options (uses filename if not defined)
*/
#define PEVENT_PLUGIN_LOADER pevent_plugin_loader
#define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader
#define PEVENT_PLUGIN_OPTIONS pevent_plugin_options
#define PEVENT_PLUGIN_ALIAS pevent_plugin_alias
#define _MAKE_STR(x) #x
#define MAKE_STR(x) _MAKE_STR(x)
#define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER)
#define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER)
#define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS)
#define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS)
#define NSECS_PER_SEC 1000000000ULL
#define NSECS_PER_USEC 1000ULL
enum format_flags {
FIELD_IS_ARRAY = 1,
FIELD_IS_POINTER = 2,
FIELD_IS_SIGNED = 4,
FIELD_IS_STRING = 8,
FIELD_IS_DYNAMIC = 16,
FIELD_IS_LONG = 32,
};
struct format_field {
struct format_field *next;
struct event_format *event;
char *type;
char *name;
int offset;
int size;
unsigned int arraylen;
unsigned int elementsize;
unsigned long flags;
};
struct format {
int nr_common;
int nr_fields;
struct format_field *common_fields;
struct format_field *fields;
};
struct print_arg_atom {
char *atom;
};
struct print_arg_string {
char *string;
int offset;
};
struct print_arg_field {
char *name;
struct format_field *field;
};
struct print_flag_sym {
struct print_flag_sym *next;
char *value;
char *str;
};
struct print_arg_typecast {
char *type;
struct print_arg *item;
};
struct print_arg_flags {
struct print_arg *field;
char *delim;
struct print_flag_sym *flags;
};
struct print_arg_symbol {
struct print_arg *field;
struct print_flag_sym *symbols;
};
struct print_arg_dynarray {
struct format_field *field;
struct print_arg *index;
};
struct print_arg;
struct print_arg_op {
char *op;
int prio;
struct print_arg *left;
struct print_arg *right;
};
struct pevent_function_handler;
struct print_arg_func {
struct pevent_function_handler *func;
struct print_arg *args;
};
enum print_arg_type {
PRINT_NULL,
PRINT_ATOM,
PRINT_FIELD,
PRINT_FLAGS,
PRINT_SYMBOL,
PRINT_TYPE,
PRINT_STRING,
PRINT_BSTRING,
PRINT_DYNAMIC_ARRAY,
PRINT_OP,
PRINT_FUNC,
};
struct print_arg {
struct print_arg *next;
enum print_arg_type type;
union {
struct print_arg_atom atom;
struct print_arg_field field;
struct print_arg_typecast typecast;
struct print_arg_flags flags;
struct print_arg_symbol symbol;
struct print_arg_func func;
struct print_arg_string string;
struct print_arg_op op;
struct print_arg_dynarray dynarray;
};
};
struct print_fmt {
char *format;
struct print_arg *args;
};
struct event_format {
struct pevent *pevent;
char *name;
int id;
int flags;
struct format format;
struct print_fmt print_fmt;
char *system;
pevent_event_handler_func handler;
void *context;
};
enum {
EVENT_FL_ISFTRACE = 0x01,
EVENT_FL_ISPRINT = 0x02,
EVENT_FL_ISBPRINT = 0x04,
EVENT_FL_ISFUNCENT = 0x10,
EVENT_FL_ISFUNCRET = 0x20,
EVENT_FL_FAILED = 0x80000000
};
enum event_sort_type {
EVENT_SORT_ID,
EVENT_SORT_NAME,
EVENT_SORT_SYSTEM,
};
enum event_type {
EVENT_ERROR,
EVENT_NONE,
EVENT_SPACE,
EVENT_NEWLINE,
EVENT_OP,
EVENT_DELIM,
EVENT_ITEM,
EVENT_DQUOTE,
EVENT_SQUOTE,
};
typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
unsigned long long *args);
enum pevent_func_arg_type {
PEVENT_FUNC_ARG_VOID,
PEVENT_FUNC_ARG_INT,
PEVENT_FUNC_ARG_LONG,
PEVENT_FUNC_ARG_STRING,
PEVENT_FUNC_ARG_PTR,
PEVENT_FUNC_ARG_MAX_TYPES
};
struct cmdline;
struct cmdline_list;
struct func_map;
struct func_list;
struct event_handler;
struct pevent {
int ref_count;
int header_page_ts_offset;
int header_page_ts_size;
int header_page_size_offset;
int header_page_size_size;
int header_page_data_offset;
int header_page_data_size;
int header_page_overwrite;
int file_bigendian;
int host_bigendian;
int latency_format;
int old_format;
int cpus;
int long_size;
struct cmdline *cmdlines;
struct cmdline_list *cmdlist;
int cmdline_count;
struct func_map *func_map;
struct func_list *funclist;
unsigned int func_count;
struct printk_map *printk_map;
struct printk_list *printklist;
unsigned int printk_count;
struct event_format **events;
int nr_events;
struct event_format **sort_events;
enum event_sort_type last_type;
int type_offset;
int type_size;
int pid_offset;
int pid_size;
int pc_offset;
int pc_size;
int flags_offset;
int flags_size;
int ld_offset;
int ld_size;
int print_raw;
int test_filters;
struct format_field *bprint_ip_field;
struct format_field *bprint_fmt_field;
struct format_field *bprint_buf_field;
struct event_handler *handlers;
struct pevent_function_handler *func_handlers;
/* cache */
struct event_format *last_event;
};
/* Can be overridden */
void die(const char *fmt, ...);
void *malloc_or_die(unsigned int size);
void warning(const char *fmt, ...);
void pr_stat(const char *fmt, ...);
void vpr_stat(const char *fmt, va_list ap);
/* Always available */
void __die(const char *fmt, ...);
void __warning(const char *fmt, ...);
void __pr_stat(const char *fmt, ...);
void __vdie(const char *fmt, ...);
void __vwarning(const char *fmt, ...);
void __vpr_stat(const char *fmt, ...);
static inline unsigned short
__data2host2(struct pevent *pevent, unsigned short data)
{
unsigned short swap;
if (pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 8) |
((data & (0xffULL << 8)) >> 8);
return swap;
}
static inline unsigned int
__data2host4(struct pevent *pevent, unsigned int data)
{
unsigned int swap;
if (pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 24) |
((data & (0xffULL << 8)) << 8) |
((data & (0xffULL << 16)) >> 8) |
((data & (0xffULL << 24)) >> 24);
return swap;
}
static inline unsigned long long
__data2host8(struct pevent *pevent, unsigned long long data)
{
unsigned long long swap;
if (pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 56) |
((data & (0xffULL << 8)) << 40) |
((data & (0xffULL << 16)) << 24) |
((data & (0xffULL << 24)) << 8) |
((data & (0xffULL << 32)) >> 8) |
((data & (0xffULL << 40)) >> 24) |
((data & (0xffULL << 48)) >> 40) |
((data & (0xffULL << 56)) >> 56);
return swap;
}
#define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr))
#define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr))
#define data2host8(pevent, ptr) \
({ \
unsigned long long __val; \
\
memcpy(&__val, (ptr), sizeof(unsigned long long)); \
__data2host8(pevent, __val); \
})
/* taken from kernel/trace/trace.h */
enum trace_flag_type {
TRACE_FLAG_IRQS_OFF = 0x01,
TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
TRACE_FLAG_NEED_RESCHED = 0x04,
TRACE_FLAG_HARDIRQ = 0x08,
TRACE_FLAG_SOFTIRQ = 0x10,
};
int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
int pevent_register_function(struct pevent *pevent, char *name,
unsigned long long addr, char *mod);
int pevent_register_print_string(struct pevent *pevent, char *fmt,
unsigned long long addr);
int pevent_pid_is_registered(struct pevent *pevent, int pid);
void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
struct record *record);
int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
int long_size);
int pevent_parse_event(struct pevent *pevent, const char *buf,
unsigned long size, const char *sys);
void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
const char *name, struct record *record,
int *len, int err);
int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
const char *name, struct record *record,
unsigned long long *val, int err);
int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
const char *name, struct record *record,
unsigned long long *val, int err);
int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
const char *name, struct record *record,
unsigned long long *val, int err);
int pevent_print_num_field(struct trace_seq *s, const char *fmt,
struct event_format *event, const char *name,
struct record *record, int err);
int pevent_register_event_handler(struct pevent *pevent, int id, char *sys_name, char *event_name,
pevent_event_handler_func func, void *context);
int pevent_register_print_function(struct pevent *pevent,
pevent_func_handler func,
enum pevent_func_arg_type ret_type,
char *name, ...);
struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
struct format_field *pevent_find_field(struct event_format *event, const char *name);
struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
unsigned long long
pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
int pevent_read_number_field(struct format_field *field, const void *data,
unsigned long long *value);
struct event_format *pevent_find_event(struct pevent *pevent, int id);
struct event_format *
pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
void pevent_data_lat_fmt(struct pevent *pevent,
struct trace_seq *s, struct record *record);
int pevent_data_type(struct pevent *pevent, struct record *rec);
struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
int pevent_data_pid(struct pevent *pevent, struct 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 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 bool;
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 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 */

64
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/*
* Copyright (C) 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#ifndef __UTIL_H
#define __UTIL_H
#include <ctype.h>
static inline char *strim(char *string)
{
char *ret;
if (!string)
return NULL;
while (*string) {
if (!isspace(*string))
break;
string++;
}
ret = string;
string = ret + strlen(ret) - 1;
while (string > ret) {
if (!isspace(*string))
break;
string--;
}
string[1] = 0;
return ret;
}
static inline int has_text(const char *text)
{
if (!text)
return 0;
while (*text) {
if (!isspace(*text))
return 1;
text++;
}
return 0;
}
#endif

2262
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110
tools/lib/traceevent/parse-utils.c Normal file
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@ -0,0 +1,110 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#define __weak __attribute__((weak))
void __vdie(const char *fmt, va_list ap)
{
int ret = errno;
if (errno)
perror("trace-cmd");
else
ret = -1;
fprintf(stderr, " ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
exit(ret);
}
void __die(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
__vdie(fmt, ap);
va_end(ap);
}
void __weak die(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
__vdie(fmt, ap);
va_end(ap);
}
void __vwarning(const char *fmt, va_list ap)
{
if (errno)
perror("trace-cmd");
errno = 0;
fprintf(stderr, " ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
}
void __warning(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
__vwarning(fmt, ap);
va_end(ap);
}
void __weak warning(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
__vwarning(fmt, ap);
va_end(ap);
}
void __vpr_stat(const char *fmt, va_list ap)
{
vprintf(fmt, ap);
printf("\n");
}
void __pr_stat(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
__vpr_stat(fmt, ap);
va_end(ap);
}
void __weak vpr_stat(const char *fmt, va_list ap)
{
__vpr_stat(fmt, ap);
}
void __weak pr_stat(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
__vpr_stat(fmt, ap);
va_end(ap);
}
void __weak *malloc_or_die(unsigned int size)
{
void *data;
data = malloc(size);
if (!data)
die("malloc");
return data;
}

199
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/*
* Copyright (C) 2009 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "event-parse.h"
/*
* The TRACE_SEQ_POISON is to catch the use of using
* a trace_seq structure after it was destroyed.
*/
#define TRACE_SEQ_POISON ((void *)0xdeadbeef)
#define TRACE_SEQ_CHECK(s) \
do { \
if ((s)->buffer == TRACE_SEQ_POISON) \
die("Usage of trace_seq after it was destroyed"); \
} while (0)
/**
* trace_seq_init - initialize the trace_seq structure
* @s: a pointer to the trace_seq structure to initialize
*/
void trace_seq_init(struct trace_seq *s)
{
s->len = 0;
s->readpos = 0;
s->buffer_size = TRACE_SEQ_BUF_SIZE;
s->buffer = malloc_or_die(s->buffer_size);
}
/**
* trace_seq_destroy - free up memory of a trace_seq
* @s: a pointer to the trace_seq to free the buffer
*
* Only frees the buffer, not the trace_seq struct itself.
*/
void trace_seq_destroy(struct trace_seq *s)
{
if (!s)
return;
TRACE_SEQ_CHECK(s);
free(s->buffer);
s->buffer = TRACE_SEQ_POISON;
}
static void expand_buffer(struct trace_seq *s)
{
s->buffer_size += TRACE_SEQ_BUF_SIZE;
s->buffer = realloc(s->buffer, s->buffer_size);
if (!s->buffer)
die("Can't allocate trace_seq buffer memory");
}
/**
* trace_seq_printf - sequence printing of trace information
* @s: trace sequence descriptor
* @fmt: printf format string
*
* It returns 0 if the trace oversizes the buffer's free
* space, 1 otherwise.
*
* The tracer may use either sequence operations or its own
* copy to user routines. To simplify formating of a trace
* trace_seq_printf is used to store strings into a special
* buffer (@s). Then the output may be either used by
* the sequencer or pulled into another buffer.
*/
int
trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
{
va_list ap;
int len;
int ret;
TRACE_SEQ_CHECK(s);
try_again:
len = (s->buffer_size - 1) - s->len;
va_start(ap, fmt);
ret = vsnprintf(s->buffer + s->len, len, fmt, ap);
va_end(ap);
if (ret >= len) {
expand_buffer(s);
goto try_again;
}
s->len += ret;
return 1;
}
/**
* trace_seq_vprintf - sequence printing of trace information
* @s: trace sequence descriptor
* @fmt: printf format string
*
* The tracer may use either sequence operations or its own
* copy to user routines. To simplify formating of a trace
* trace_seq_printf is used to store strings into a special
* buffer (@s). Then the output may be either used by
* the sequencer or pulled into another buffer.
*/
int
trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
{
int len;
int ret;
TRACE_SEQ_CHECK(s);
try_again:
len = (s->buffer_size - 1) - s->len;
ret = vsnprintf(s->buffer + s->len, len, fmt, args);
if (ret >= len) {
expand_buffer(s);
goto try_again;
}
s->len += ret;
return len;
}
/**
* trace_seq_puts - trace sequence printing of simple string
* @s: trace sequence descriptor
* @str: simple string to record
*
* The tracer may use either the sequence operations or its own
* copy to user routines. This function records a simple string
* into a special buffer (@s) for later retrieval by a sequencer
* or other mechanism.
*/
int trace_seq_puts(struct trace_seq *s, const char *str)
{
int len;
TRACE_SEQ_CHECK(s);
len = strlen(str);
while (len > ((s->buffer_size - 1) - s->len))
expand_buffer(s);
memcpy(s->buffer + s->len, str, len);
s->len += len;
return len;
}
int trace_seq_putc(struct trace_seq *s, unsigned char c)
{
TRACE_SEQ_CHECK(s);
while (s->len >= (s->buffer_size - 1))
expand_buffer(s);
s->buffer[s->len++] = c;
return 1;
}
void trace_seq_terminate(struct trace_seq *s)
{
TRACE_SEQ_CHECK(s);
/* There's always one character left on the buffer */
s->buffer[s->len] = 0;
}
int trace_seq_do_printf(struct trace_seq *s)
{
TRACE_SEQ_CHECK(s);
return printf("%.*s", s->len, s->buffer);
}