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tools lib traceevent, perf tools: Move struct tep_handler definition in a local header file

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As traceevent is going to be transferred into a proper library,
its local data should be protected from the library users.
This patch encapsulates struct tep_handler into a local header,
not visible outside of the library. It implements also a bunch
of new APIs, which library users can use to access tep_handler members.

Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linux trace devel <linux-trace-devel@vger.kernel.org>
Cc: tzvetomir stoyanov <tstoyanov@vmware.com>
Link: http://lkml.kernel.org/r/20181005122225.522155df@gandalf.local.home
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Tzvetomir Stoyanov 2018-10-05 12:22:25 -04:00 committed by Arnaldo Carvalho de Melo
parent bbbab191c2
commit bb3dd7e7c4
9 changed files with 416 additions and 211 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/lib/traceevent/Build
View File

@ -5,6 +5,7 @@ libtraceevent-y += parse-filter.o
libtraceevent-y += parse-utils.o
libtraceevent-y += kbuffer-parse.o
libtraceevent-y += tep_strerror.o
libtraceevent-y += event-parse-api.o
plugin_jbd2-y += plugin_jbd2.o
plugin_hrtimer-y += plugin_hrtimer.o

275
tools/lib/traceevent/event-parse-api.c Normal file
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@ -0,0 +1,275 @@
// SPDX-License-Identifier: LGPL-2.1
/*
* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
*
*/
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
/**
* tep_get_first_event - returns the first event in the events array
* @tep: a handle to the tep_handle
*
* This returns pointer to the first element of the events array
* If @tep is NULL, NULL is returned.
*/
struct tep_event_format *tep_get_first_event(struct tep_handle *tep)
{
if (tep && tep->events)
return tep->events[0];
return NULL;
}
/**
* tep_get_events_count - get the number of defined events
* @tep: a handle to the tep_handle
*
* This returns number of elements in event array
* If @tep is NULL, 0 is returned.
*/
int tep_get_events_count(struct tep_handle *tep)
{
if(tep)
return tep->nr_events;
return 0;
}
/**
* tep_set_flag - set event parser flag
* @tep: a handle to the tep_handle
* @flag: flag, or combination of flags to be set
* can be any combination from enum tep_flag
*
* This sets a flag or mbination of flags from enum tep_flag
*/
void tep_set_flag(struct tep_handle *tep, int flag)
{
if(tep)
tep->flags |= flag;
}
unsigned short __tep_data2host2(struct tep_handle *pevent, unsigned short data)
{
unsigned short swap;
if (!pevent || pevent->host_bigendian == pevent->file_bigendian)
return data;
swap = ((data & 0xffULL) << 8) |
((data & (0xffULL << 8)) >> 8);
return swap;
}
unsigned int __tep_data2host4(struct tep_handle *pevent, unsigned int data)
{
unsigned int swap;
if (!pevent || 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;
}
unsigned long long
__tep_data2host8(struct tep_handle *pevent, unsigned long long data)
{
unsigned long long swap;
if (!pevent || 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;
}
/**
* tep_get_header_page_size - get size of the header page
* @pevent: a handle to the tep_handle
*
* This returns size of the header page
* If @pevent is NULL, 0 is returned.
*/
int tep_get_header_page_size(struct tep_handle *pevent)
{
if(pevent)
return pevent->header_page_size_size;
return 0;
}
/**
* tep_get_cpus - get the number of CPUs
* @pevent: a handle to the tep_handle
*
* This returns the number of CPUs
* If @pevent is NULL, 0 is returned.
*/
int tep_get_cpus(struct tep_handle *pevent)
{
if(pevent)
return pevent->cpus;
return 0;
}
/**
* tep_set_cpus - set the number of CPUs
* @pevent: a handle to the tep_handle
*
* This sets the number of CPUs
*/
void tep_set_cpus(struct tep_handle *pevent, int cpus)
{
if(pevent)
pevent->cpus = cpus;
}
/**
* tep_get_long_size - get the size of a long integer on the current machine
* @pevent: a handle to the tep_handle
*
* This returns the size of a long integer on the current machine
* If @pevent is NULL, 0 is returned.
*/
int tep_get_long_size(struct tep_handle *pevent)
{
if(pevent)
return pevent->long_size;
return 0;
}
/**
* tep_set_long_size - set the size of a long integer on the current machine
* @pevent: a handle to the tep_handle
* @size: size, in bytes, of a long integer
*
* This sets the size of a long integer on the current machine
*/
void tep_set_long_size(struct tep_handle *pevent, int long_size)
{
if(pevent)
pevent->long_size = long_size;
}
/**
* tep_get_page_size - get the size of a memory page on the current machine
* @pevent: a handle to the tep_handle
*
* This returns the size of a memory page on the current machine
* If @pevent is NULL, 0 is returned.
*/
int tep_get_page_size(struct tep_handle *pevent)
{
if(pevent)
return pevent->page_size;
return 0;
}
/**
* tep_set_page_size - set the size of a memory page on the current machine
* @pevent: a handle to the tep_handle
* @_page_size: size of a memory page, in bytes
*
* This sets the size of a memory page on the current machine
*/
void tep_set_page_size(struct tep_handle *pevent, int _page_size)
{
if(pevent)
pevent->page_size = _page_size;
}
/**
* tep_is_file_bigendian - get if the file is in big endian order
* @pevent: a handle to the tep_handle
*
* This returns if the file is in big endian order
* If @pevent is NULL, 0 is returned.
*/
int tep_is_file_bigendian(struct tep_handle *pevent)
{
if(pevent)
return pevent->file_bigendian;
return 0;
}
/**
* tep_set_file_bigendian - set if the file is in big endian order
* @pevent: a handle to the tep_handle
* @endian: non zero, if the file is in big endian order
*
* This sets if the file is in big endian order
*/
void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian)
{
if(pevent)
pevent->file_bigendian = endian;
}
/**
* tep_is_host_bigendian - get if the order of the current host is big endian
* @pevent: a handle to the tep_handle
*
* This gets if the order of the current host is big endian
* If @pevent is NULL, 0 is returned.
*/
int tep_is_host_bigendian(struct tep_handle *pevent)
{
if(pevent)
return pevent->host_bigendian;
return 0;
}
/**
* tep_set_host_bigendian - set the order of the local host
* @pevent: a handle to the tep_handle
* @endian: non zero, if the local host has big endian order
*
* This sets the order of the local host
*/
void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian)
{
if(pevent)
pevent->host_bigendian = endian;
}
/**
* tep_is_latency_format - get if the latency output format is configured
* @pevent: a handle to the tep_handle
*
* This gets if the latency output format is configured
* If @pevent is NULL, 0 is returned.
*/
int tep_is_latency_format(struct tep_handle *pevent)
{
if(pevent)
return pevent->latency_format;
return 0;
}
/**
* tep_set_latency_format - set the latency output format
* @pevent: a handle to the tep_handle
* @lat: non zero for latency output format
*
* This sets the latency output format
*/
void tep_set_latency_format(struct tep_handle *pevent, int lat)
{
if(pevent)
pevent->latency_format = lat;
}

92
tools/lib/traceevent/event-parse-local.h Normal file
View File

@ -0,0 +1,92 @@
// SPDX-License-Identifier: LGPL-2.1
/*
* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
*
*/
#ifndef _PARSE_EVENTS_INT_H
#define _PARSE_EVENTS_INT_H
struct cmdline;
struct cmdline_list;
struct func_map;
struct func_list;
struct event_handler;
struct func_resolver;
struct tep_handle {
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;
enum tep_endian file_bigendian;
enum tep_endian host_bigendian;
int latency_format;
int old_format;
int cpus;
int long_size;
int page_size;
struct cmdline *cmdlines;
struct cmdline_list *cmdlist;
int cmdline_count;
struct func_map *func_map;
struct func_resolver *func_resolver;
struct func_list *funclist;
unsigned int func_count;
struct printk_map *printk_map;
struct printk_list *printklist;
unsigned int printk_count;
struct tep_event_format **events;
int nr_events;
struct tep_event_format **sort_events;
enum tep_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;
int flags;
struct tep_format_field *bprint_ip_field;
struct tep_format_field *bprint_fmt_field;
struct tep_format_field *bprint_buf_field;
struct event_handler *handlers;
struct tep_function_handler *func_handlers;
/* cache */
struct tep_event_format *last_event;
char *trace_clock;
};
#endif /* _PARSE_EVENTS_INT_H */

2
tools/lib/traceevent/event-parse.c
View File

@ -22,6 +22,8 @@
#include <netinet/in.h>
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
#include "trace-seq.h"

228
tools/lib/traceevent/event-parse.h
View File

@ -405,149 +405,18 @@ void tep_print_plugins(struct trace_seq *s,
const char *prefix, const char *suffix,
const struct tep_plugin_list *list);
struct cmdline;
struct cmdline_list;
struct func_map;
struct func_list;
struct event_handler;
struct func_resolver;
/* tep_handle */
typedef char *(tep_func_resolver_t)(void *priv,
unsigned long long *addrp, char **modp);
void tep_set_flag(struct tep_handle *tep, int flag);
unsigned short __tep_data2host2(struct tep_handle *pevent, unsigned short data);
unsigned int __tep_data2host4(struct tep_handle *pevent, unsigned int data);
unsigned long long
__tep_data2host8(struct tep_handle *pevent, unsigned long long data);
struct tep_handle {
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;
int page_size;
struct cmdline *cmdlines;
struct cmdline_list *cmdlist;
int cmdline_count;
struct func_map *func_map;
struct func_resolver *func_resolver;
struct func_list *funclist;
unsigned int func_count;
struct printk_map *printk_map;
struct printk_list *printklist;
unsigned int printk_count;
struct tep_event_format **events;
int nr_events;
struct tep_event_format **sort_events;
enum tep_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;
int flags;
struct tep_format_field *bprint_ip_field;
struct tep_format_field *bprint_fmt_field;
struct tep_format_field *bprint_buf_field;
struct event_handler *handlers;
struct tep_function_handler *func_handlers;
/* cache */
struct tep_event_format *last_event;
char *trace_clock;
};
static inline void tep_set_flag(struct tep_handle *pevent, int flag)
{
pevent->flags |= flag;
}
static inline unsigned short
__tep_data2host2(struct tep_handle *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
__tep_data2host4(struct tep_handle *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
__tep_data2host8(struct tep_handle *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 tep_data2host2(pevent, ptr) __tep_data2host2(pevent, *(unsigned short *)(ptr))
#define tep_data2host4(pevent, ptr) __tep_data2host4(pevent, *(unsigned int *)(ptr))
#define tep_data2host8(pevent, ptr) \
#define tep_data2host2(pevent, ptr) __tep_data2host2(pevent, *(unsigned short *)(ptr))
#define tep_data2host4(pevent, ptr) __tep_data2host4(pevent, *(unsigned int *)(ptr))
#define tep_data2host8(pevent, ptr) \
({ \
unsigned long long __val; \
\
@ -655,11 +524,12 @@ unsigned long long tep_read_number(struct tep_handle *pevent, const void *ptr, i
int tep_read_number_field(struct tep_format_field *field, const void *data,
unsigned long long *value);
struct tep_event_format *tep_get_first_event(struct tep_handle *tep);
int tep_get_events_count(struct tep_handle *tep);
struct tep_event_format *tep_find_event(struct tep_handle *pevent, int id);
struct tep_event_format *
tep_find_event_by_name(struct tep_handle *pevent, const char *sys, const char *name);
struct tep_event_format *
tep_find_event_by_record(struct tep_handle *pevent, struct tep_record *record);
@ -689,65 +559,23 @@ struct tep_event_format **tep_list_events(struct tep_handle *pevent, enum tep_ev
struct tep_format_field **tep_event_common_fields(struct tep_event_format *event);
struct tep_format_field **tep_event_fields(struct tep_event_format *event);
static inline int tep_get_cpus(struct tep_handle *pevent)
{
return pevent->cpus;
}
static inline void tep_set_cpus(struct tep_handle *pevent, int cpus)
{
pevent->cpus = cpus;
}
static inline int tep_get_long_size(struct tep_handle *pevent)
{
return pevent->long_size;
}
static inline void tep_set_long_size(struct tep_handle *pevent, int long_size)
{
pevent->long_size = long_size;
}
static inline int tep_get_page_size(struct tep_handle *pevent)
{
return pevent->page_size;
}
static inline void tep_set_page_size(struct tep_handle *pevent, int _page_size)
{
pevent->page_size = _page_size;
}
static inline int tep_is_file_bigendian(struct tep_handle *pevent)
{
return pevent->file_bigendian;
}
static inline void tep_set_file_bigendian(struct tep_handle *pevent, int endian)
{
pevent->file_bigendian = endian;
}
static inline int tep_is_host_bigendian(struct tep_handle *pevent)
{
return pevent->host_bigendian;
}
static inline void tep_set_host_bigendian(struct tep_handle *pevent, int endian)
{
pevent->host_bigendian = endian;
}
static inline int tep_is_latency_format(struct tep_handle *pevent)
{
return pevent->latency_format;
}
static inline void tep_set_latency_format(struct tep_handle *pevent, int lat)
{
pevent->latency_format = lat;
}
enum tep_endian {
TEP_LITTLE_ENDIAN = 0,
TEP_BIG_ENDIAN
};
int tep_get_cpus(struct tep_handle *pevent);
void tep_set_cpus(struct tep_handle *pevent, int cpus);
int tep_get_long_size(struct tep_handle *pevent);
void tep_set_long_size(struct tep_handle *pevent, int long_size);
int tep_get_page_size(struct tep_handle *pevent);
void tep_set_page_size(struct tep_handle *pevent, int _page_size);
int tep_is_file_bigendian(struct tep_handle *pevent);
void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian);
int tep_is_host_bigendian(struct tep_handle *pevent);
void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian);
int tep_is_latency_format(struct tep_handle *pevent);
void tep_set_latency_format(struct tep_handle *pevent, int lat);
int tep_get_header_page_size(struct tep_handle *pevent);
struct tep_handle *tep_alloc(void);
void tep_free(struct tep_handle *pevent);

1
tools/lib/traceevent/event-plugin.c
View File

@ -14,6 +14,7 @@
#include <unistd.h>
#include <dirent.h>
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
#include "trace-seq.h"

1
tools/lib/traceevent/parse-filter.c
View File

@ -11,6 +11,7 @@
#include <sys/types.h>
#include "event-parse.h"
#include "event-parse-local.h"
#include "event-utils.h"
#define COMM "COMM"

25
tools/perf/util/trace-event-parse.c
View File

@ -37,10 +37,11 @@ static int get_common_field(struct scripting_context *context,
struct tep_format_field *field;
if (!*size) {
if (!pevent->events)
event = tep_get_first_event(pevent);
if (!event)
return 0;
event = pevent->events[0];
field = tep_find_common_field(event, type);
if (!field)
return 0;
@ -193,25 +194,29 @@ struct tep_event_format *trace_find_next_event(struct tep_handle *pevent,
struct tep_event_format *event)
{
static int idx;
int events_count;
struct tep_event_format *all_events;
if (!pevent || !pevent->events)
all_events = tep_get_first_event(pevent);
events_count = tep_get_events_count(pevent);
if (!pevent || !all_events || events_count < 1)
return NULL;
if (!event) {
idx = 0;
return pevent->events[0];
return all_events;
}
if (idx < pevent->nr_events && event == pevent->events[idx]) {
if (idx < events_count && event == (all_events + idx)) {
idx++;
if (idx == pevent->nr_events)
if (idx == events_count)
return NULL;
return pevent->events[idx];
return (all_events + idx);
}
for (idx = 1; idx < pevent->nr_events; idx++) {
if (event == pevent->events[idx - 1])
return pevent->events[idx];
for (idx = 1; idx < events_count; idx++) {
if (event == (all_events + (idx - 1)))
return (all_events + idx);
}
return NULL;
}

2
tools/perf/util/trace-event-read.c
View File

@ -241,7 +241,7 @@ static int read_header_files(struct tep_handle *pevent)
* The commit field in the page is of type long,
* use that instead, since it represents the kernel.
*/
tep_set_long_size(pevent, pevent->header_page_size_size);
tep_set_long_size(pevent, tep_get_header_page_size(pevent));
}
free(header_page);