+++ /dev/null
-/*
- * Code markup for dynamic and static tracing.
- *
- * See Documentation/marker.txt.
- *
- * (C) Copyright 2006 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
- * (C) Copyright 2009 Pierre-Marc Fournier <pierre-marc dot fournier at polymtl dot ca>
- *
- * This library 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; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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 library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef _LINUX_MARKER_H
-#define _LINUX_MARKER_H
-
-#include <stdarg.h>
-//ust// #include <linux/types.h>
-#include "immediate.h"
-//ust// #include <linux/ltt-channels.h>
-#include "kernelcompat.h"
-#include <kcompat/list.h>
-#include "usterr.h"
-
-//ust// struct module;
-//ust// struct task_struct;
-struct marker;
-
-/**
- * marker_probe_func - Type of a marker probe function
- * @mdata: marker data
- * @probe_private: probe private data
- * @call_private: call site private data
- * @fmt: format string
- * @args: variable argument list pointer. Use a pointer to overcome C's
- * inability to pass this around as a pointer in a portable manner in
- * the callee otherwise.
- *
- * Type of marker probe functions. They receive the mdata and need to parse the
- * format string to recover the variable argument list.
- */
-typedef void marker_probe_func(const struct marker *mdata,
- void *probe_private, void *call_private,
- const char *fmt, va_list *args);
-
-struct marker_probe_closure {
- marker_probe_func *func; /* Callback */
- void *probe_private; /* Private probe data */
-};
-
-struct marker {
- const char *channel; /* Name of channel where to send data */
- const char *name; /* Marker name */
- const char *format; /* Marker format string, describing the
- * variable argument list.
- */
- DEFINE_IMV(char, state);/* Immediate value state. */
- char ptype; /* probe type : 0 : single, 1 : multi */
- /* Probe wrapper */
- u16 channel_id; /* Numeric channel identifier, dynamic */
- u16 event_id; /* Numeric event identifier, dynamic */
- void (*call)(const struct marker *mdata, void *call_private, ...);
- struct marker_probe_closure single;
- struct marker_probe_closure *multi;
- const char *tp_name; /* Optional tracepoint name */
- void *tp_cb; /* Optional tracepoint callback */
-} __attribute__((aligned(8)));
-
-#define CONFIG_MARKERS
-#ifdef CONFIG_MARKERS
-
-#define _DEFINE_MARKER(channel, name, tp_name_str, tp_cb, format) \
- static const char __mstrtab_##channel##_##name[] \
- __attribute__((section("__markers_strings"))) \
- = #channel "\0" #name "\0" format; \
- static struct marker __mark_##channel##_##name \
- __attribute__((section("__markers"), aligned(8))) = \
- { __mstrtab_##channel##_##name, \
- &__mstrtab_##channel##_##name[sizeof(#channel)], \
- &__mstrtab_##channel##_##name[sizeof(#channel) + \
- sizeof(#name)], \
- 0, 0, 0, 0, marker_probe_cb, \
- { __mark_empty_function, NULL}, \
- NULL, tp_name_str, tp_cb }
-
-#define DEFINE_MARKER(channel, name, format) \
- _DEFINE_MARKER(channel, name, NULL, NULL, format)
-
-#define DEFINE_MARKER_TP(channel, name, tp_name, tp_cb, format) \
- _DEFINE_MARKER(channel, name, #tp_name, tp_cb, format)
-
-/*
- * Make sure the alignment of the structure in the __markers section will
- * not add unwanted padding between the beginning of the section and the
- * structure. Force alignment to the same alignment as the section start.
- *
- * The "generic" argument controls which marker enabling mechanism must be used.
- * If generic is true, a variable read is used.
- * If generic is false, immediate values are used.
- */
-#define __trace_mark(generic, channel, name, call_private, format, args...) \
- do { \
- DEFINE_MARKER(channel, name, format); \
- __mark_check_format(format, ## args); \
- if (!generic) { \
- if (unlikely(imv_read( \
- __mark_##channel##_##name.state))) \
- (*__mark_##channel##_##name.call) \
- (&__mark_##channel##_##name, \
- call_private, ## args); \
- } else { \
- if (unlikely(_imv_read( \
- __mark_##channel##_##name.state))) \
- (*__mark_##channel##_##name.call) \
- (&__mark_##channel##_##name, \
- call_private, ## args); \
- } \
- } while (0)
-
-#define __trace_mark_tp(channel, name, call_private, tp_name, tp_cb, \
- format, args...) \
- do { \
- void __check_tp_type(void) \
- { \
- register_trace_##tp_name(tp_cb); \
- } \
- DEFINE_MARKER_TP(channel, name, tp_name, tp_cb, format);\
- __mark_check_format(format, ## args); \
- (*__mark_##channel##_##name.call)(&__mark_##channel##_##name, \
- call_private, ## args); \
- } while (0)
-
-extern void marker_update_probe_range(struct marker *begin,
- struct marker *end);
-
-#define GET_MARKER(channel, name) (__mark_##channel##_##name)
-
-#else /* !CONFIG_MARKERS */
-#define DEFINE_MARKER(channel, name, tp_name, tp_cb, format)
-#define __trace_mark(generic, channel, name, call_private, format, args...) \
- __mark_check_format(format, ## args)
-#define __trace_mark_tp(channel, name, call_private, tp_name, tp_cb, \
- format, args...) \
- do { \
- void __check_tp_type(void) \
- { \
- register_trace_##tp_name(tp_cb); \
- } \
- __mark_check_format(format, ## args); \
- } while (0)
-static inline void marker_update_probe_range(struct marker *begin,
- struct marker *end)
-{ }
-#define GET_MARKER(channel, name)
-#endif /* CONFIG_MARKERS */
-
-/**
- * trace_mark - Marker using code patching
- * @channel: marker channel (where to send the data), not quoted.
- * @name: marker name, not quoted.
- * @format: format string
- * @args...: variable argument list
- *
- * Places a marker using optimized code patching technique (imv_read())
- * to be enabled when immediate values are present.
- */
-#define trace_mark(channel, name, format, args...) \
- __trace_mark(0, channel, name, NULL, format, ## args)
-
-/**
- * _trace_mark - Marker using variable read
- * @channel: marker channel (where to send the data), not quoted.
- * @name: marker name, not quoted.
- * @format: format string
- * @args...: variable argument list
- *
- * Places a marker using a standard memory read (_imv_read()) to be
- * enabled. Should be used for markers in code paths where instruction
- * modification based enabling is not welcome. (__init and __exit functions,
- * lockdep, some traps, printk).
- */
-#define _trace_mark(channel, name, format, args...) \
- __trace_mark(1, channel, name, NULL, format, ## args)
-
-/**
- * trace_mark_tp - Marker in a tracepoint callback
- * @channel: marker channel (where to send the data), not quoted.
- * @name: marker name, not quoted.
- * @tp_name: tracepoint name, not quoted.
- * @tp_cb: tracepoint callback. Should have an associated global symbol so it
- * is not optimized away by the compiler (should not be static).
- * @format: format string
- * @args...: variable argument list
- *
- * Places a marker in a tracepoint callback.
- */
-#define trace_mark_tp(channel, name, tp_name, tp_cb, format, args...) \
- __trace_mark_tp(channel, name, NULL, tp_name, tp_cb, format, ## args)
-
-/**
- * MARK_NOARGS - Format string for a marker with no argument.
- */
-#define MARK_NOARGS " "
-
-extern void lock_markers(void);
-extern void unlock_markers(void);
-
-extern void markers_compact_event_ids(void);
-
-/* To be used for string format validity checking with gcc */
-static inline void __printf(1, 2) ___mark_check_format(const char *fmt, ...)
-{
-}
-
-#define __mark_check_format(format, args...) \
- do { \
- if (0) \
- ___mark_check_format(format, ## args); \
- } while (0)
-
-extern marker_probe_func __mark_empty_function;
-
-extern void marker_probe_cb(const struct marker *mdata,
- void *call_private, ...);
-
-/*
- * Connect a probe to a marker.
- * private data pointer must be a valid allocated memory address, or NULL.
- */
-extern int marker_probe_register(const char *channel, const char *name,
- const char *format, marker_probe_func *probe, void *probe_private);
-
-/*
- * Returns the private data given to marker_probe_register.
- */
-extern int marker_probe_unregister(const char *channel, const char *name,
- marker_probe_func *probe, void *probe_private);
-/*
- * Unregister a marker by providing the registered private data.
- */
-extern int marker_probe_unregister_private_data(marker_probe_func *probe,
- void *probe_private);
-
-extern void *marker_get_private_data(const char *channel, const char *name,
- marker_probe_func *probe, int num);
-
-/*
- * marker_synchronize_unregister must be called between the last marker probe
- * unregistration and the first one of
- * - the end of module exit function
- * - the free of any resource used by the probes
- * to ensure the code and data are valid for any possibly running probes.
- */
-#define marker_synchronize_unregister() synchronize_sched()
-
-struct marker_iter {
-//ust// struct module *module;
- struct lib *lib;
- struct marker *marker;
-};
-
-extern void marker_iter_start(struct marker_iter *iter);
-extern void marker_iter_next(struct marker_iter *iter);
-extern void marker_iter_stop(struct marker_iter *iter);
-extern void marker_iter_reset(struct marker_iter *iter);
-extern int marker_get_iter_range(struct marker **marker, struct marker *begin,
- struct marker *end);
-
-extern void marker_update_process(void);
-extern int is_marker_enabled(const char *channel, const char *name);
-
-//ust// #ifdef CONFIG_MARKERS_USERSPACE
-//ust// extern void exit_user_markers(struct task_struct *p);
-//ust// #else
-//ust// static inline void exit_user_markers(struct task_struct *p)
-//ust// {
-//ust// }
-//ust// #endif
-
-
-struct lib {
- struct marker *markers_start;
- int markers_count;
- struct list_head list;
-};
-
-extern int marker_register_lib(struct marker *markers_start,
- int markers_count);
-
-#define MARKER_LIB \
-extern struct marker __start___markers[] __attribute__((visibility("hidden"))); \
-extern struct marker __stop___markers[] __attribute__((visibility("hidden"))); \
- \
-static void __attribute__((constructor)) __markers__init(void) \
-{ \
- DBG("next registration in "__FILE__"\n");\
- marker_register_lib(__start___markers, (((long)__stop___markers)-((long)__start___markers))/sizeof(struct marker));\
-}
-
-extern void marker_set_new_marker_cb(void (*cb)(struct marker *));
-extern void init_markers(void);
-
-#endif
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