* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef _LINUX_MARKER_H
-#define _LINUX_MARKER_H
+#ifndef _UST_MARKER_H
+#define _UST_MARKER_H
#include <stdarg.h>
//ust// #include <linux/types.h>
#include <ust/immediate.h>
//ust// #include <linux/ltt-channels.h>
-#include "kernelcompat.h"
+#include <ust/kernelcompat.h>
#include <kcompat/list.h>
-#include "usterr.h"
+#include <ust/processor.h>
//ust// struct module;
//ust// struct task_struct;
struct marker;
+/* To stringify the expansion of a define */
+#define XSTR(d) STR(d)
+#define STR(s) #s
+
/**
* marker_probe_func - Type of a marker probe function
* @mdata: marker data
* format string to recover the variable argument list.
*/
typedef void marker_probe_func(const struct marker *mdata,
- void *probe_private, void *call_private,
+ void *probe_private, struct registers *regs, void *call_private,
const char *fmt, va_list *args);
struct marker_probe_closure {
/* 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, ...);
+ void (*call)(const struct marker *mdata, void *call_private, struct registers *regs, ...);
struct marker_probe_closure single;
struct marker_probe_closure *multi;
const char *tp_name; /* Optional tracepoint name */
void *tp_cb; /* Optional tracepoint callback */
+ void *location; /* Address of marker in code */
} __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)
+#define _DEFINE_MARKER(channel, name, tp_name_str, tp_cb, format, unique) \
+ struct registers regs; \
+ /* make asm label visible to C */ \
+ extern struct marker make_mark_struct_name(channel, name, unique); \
+ \
+ /* This next asm has to be a basic inline asm (no input/output/clobber), \
+ because it must not require %-sign escaping, as we most certainly \
+ have some %-signs in the format string. */ \
+ asm volatile ( \
+ ".section __markers_strings,\"aw\",@progbits\n\t" \
+ "__mstrtab_" XSTR(channel) "_" XSTR(name) "_channel_" XSTR(unique) ":\n\t" \
+ ".string \"" XSTR(channel) "\"\n\t" \
+ "__mstrtab_" XSTR(channel) "_" XSTR(name) "_name_" XSTR(unique) ":\n\t" \
+ ".string \"" XSTR(name) "\"\n\t" \
+ "__mstrtab_" XSTR(channel) "_" XSTR(name) "_format_" XSTR(unique) ":\n\t" \
+ ".string " "\"" format "\"" "\n\t" \
+ ".previous\n\t" \
+ ".section __markers,\"aw\",@progbits\n\t" \
+ ".align 8\n\t" \
+ XSTR(make_mark_struct_name(channel, name, unique)) ":\n\t" \
+ ".global " XSTR(make_mark_struct_name(channel, name, unique)) "\n\t" \
+ ".local " XSTR(make_mark_struct_name(channel, name, unique)) "\n\t" \
+ _ASM_PTR "(__mstrtab_" XSTR(channel) "_" XSTR(name) "_channel_" XSTR(unique) ")\n\t" /* channel string */ \
+ _ASM_PTR "(__mstrtab_" XSTR(channel) "_" XSTR(name) "_name_" XSTR(unique) ")\n\t" /* name string */ \
+ _ASM_PTR "(__mstrtab_" XSTR(channel) "_" XSTR(name) "_format_" XSTR(unique) ")\n\t" /* format string */ \
+ ".byte 0\n\t" /* state imv */ \
+ ".byte 0\n\t" /* ptype */ \
+ ".word 0\n\t" /* channel_id */ \
+ ".word 0\n\t" /* event_id */ \
+ ".align " XSTR(__SIZEOF_POINTER__) "\n\t" /* alignment */ \
+ _ASM_PTR "(marker_probe_cb)\n\t" /* call */ \
+ _ASM_PTR "(__mark_empty_function)\n\t" /* marker_probe_closure single.field1 */ \
+ _ASM_PTR "0\n\t" /* marker_probe_closure single.field2 */ \
+ _ASM_PTR "0\n\t" /* marker_probe_closure *multi */ \
+ _ASM_PTR "0\n\t" /* tp_name */ \
+ _ASM_PTR "0\n\t" /* tp_cb */ \
+ "__mark_location_" XSTR(unique) ":\n\t" \
+ _ASM_PTR "(1f)\n\t" /* location */ \
+ ".previous\n\t" \
+ "1:\n\t" \
+ ); \
+ \
+ save_registers(®s)
+
+
+#define DEFINE_MARKER(channel, name, format, unique) \
+ _DEFINE_MARKER(channel, name, NULL, NULL, format, unique)
+
+#define DEFINE_MARKER_TP(channel, name, tp_name, tp_cb, format, unique) \
+ _DEFINE_MARKER(channel, name, #tp_name, tp_cb, format, unique)
/*
* Make sure the alignment of the structure in the __markers section will
* If generic is true, a variable read is used.
* If generic is false, immediate values are used.
*/
+
+#define make_mark_struct_name(channel, name, unique) \
+ make_mark_struct_name2(channel, name, unique)
+
+#define make_mark_struct_name2(channel, name, unique) \
+ __mark_struct_##channel##_##name##_##unique
+
#define __trace_mark(generic, channel, name, call_private, format, args...) \
+ __trace_mark_counter(generic, channel, name, __LINE__, call_private, format, ## args)
+
+#define __trace_mark_counter(generic, channel, name, unique, call_private, format, args...) \
do { \
- DEFINE_MARKER(channel, name, format); \
+ DEFINE_MARKER(channel, name, format, unique); \
__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); \
+ make_mark_struct_name(channel, name, unique).state))) \
+ (make_mark_struct_name(channel, name, unique).call) \
+ (&make_mark_struct_name(channel, name, unique), \
+ call_private, ®s, ## args); \
} else { \
if (unlikely(_imv_read( \
- __mark_##channel##_##name.state))) \
- (*__mark_##channel##_##name.call) \
- (&__mark_##channel##_##name, \
- call_private, ## args); \
+ make_mark_struct_name(channel, name, unique).state))) \
+ (make_mark_struct_name(channel, name, unique).call) \
+ (&make_mark_struct_name(channel, name, unique), \
+ call_private, ®s, ## args); \
} \
} while (0)
-#define __trace_mark_tp(channel, name, call_private, tp_name, tp_cb, \
- format, args...) \
+#define __trace_mark_tp(channel, name, call_private, tp_name, tp_cb, format, args...) \
+ __trace_mark_tp_counter(channel, name, __LINE__, call_private, tp_name, tp_cb, format, ## args)
+
+#define __trace_mark_tp_counter(channel, name, unique, 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);\
+ DEFINE_MARKER_TP(channel, name, tp_name, tp_cb, format, unique);\
__mark_check_format(format, ## args); \
(*__mark_##channel##_##name.call)(&__mark_##channel##_##name, \
- call_private, ## args); \
+ call_private, ®s, ## args); \
} while (0)
extern void marker_update_probe_range(struct marker *begin,
extern marker_probe_func __mark_empty_function;
extern void marker_probe_cb(const struct marker *mdata,
- void *call_private, ...);
+ void *call_private, struct registers *regs, ...);
/*
* Connect a probe to a marker.
//ust// }
//ust// #endif
+struct marker_addr {
+ struct marker *marker;
+ void *addr;
+};
struct lib {
struct marker *markers_start;
+#ifdef CONFIG_UST_GDB_INTEGRATION
+ struct marker_addr *markers_addr_start;
+#endif
int markers_count;
struct list_head list;
};
-extern int marker_register_lib(struct marker *markers_start,
- int markers_count);
+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 struct marker __start___markers[] __attribute__((weak, visibility("hidden"))); \
+ extern struct marker __stop___markers[] __attribute__((weak, visibility("hidden"))); \
+ \
+ static void __attribute__((constructor)) __markers__init(void) \
+ { \
+ 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
+#endif /* _UST_MARKER_H */