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yaml
---
r: 158453
b: refs/heads/master
c: 43b51ea
h: refs/heads/master
i:
  158451: e2006ae
v: v3
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Li Zefan authored and Steven Rostedt committed Aug 26, 2009
1 parent f23752b commit db776a5
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Showing 7 changed files with 50 additions and 23 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: aa38e9fc3ea804290efd3a39316d7f7e6c945800
refs/heads/master: 43b51ead3f752a3935116e5b1a94254b8573734f
9 changes: 8 additions & 1 deletion trunk/include/linux/ftrace_event.h
Original file line number Diff line number Diff line change
Expand Up @@ -140,9 +140,16 @@ extern int filter_current_check_discard(struct ftrace_event_call *call,
void *rec,
struct ring_buffer_event *event);

enum {
FILTER_OTHER = 0,
FILTER_STATIC_STRING,
FILTER_DYN_STRING,
};

extern int trace_define_field(struct ftrace_event_call *call,
const char *type, const char *name,
int offset, int size, int is_signed);
int offset, int size, int is_signed,
int filter_type);
extern int trace_define_common_fields(struct ftrace_event_call *call);

#define is_signed_type(type) (((type)(-1)) < 0)
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31 changes: 24 additions & 7 deletions trunk/include/trace/ftrace.h
Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,9 @@
#undef __field
#define __field(type, item) type item;

#undef __field_ext
#define __field_ext(type, item, filter_type) type item;

#undef __array
#define __array(type, item, len) type item[len];

Expand Down Expand Up @@ -62,7 +65,10 @@
*/

#undef __field
#define __field(type, item);
#define __field(type, item)

#undef __field_ext
#define __field_ext(type, item, filter_type)

#undef __array
#define __array(type, item, len)
Expand Down Expand Up @@ -110,6 +116,9 @@
if (!ret) \
return 0;

#undef __field_ext
#define __field_ext(type, item, filter_type) __field(type, item)

#undef __array
#define __array(type, item, len) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
Expand Down Expand Up @@ -265,28 +274,33 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \

#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)

#undef __field
#define __field(type, item) \
#undef __field_ext
#define __field_ext(type, item, filter_type) \
ret = trace_define_field(event_call, #type, #item, \
offsetof(typeof(field), item), \
sizeof(field.item), is_signed_type(type)); \
sizeof(field.item), \
is_signed_type(type), filter_type); \
if (ret) \
return ret;

#undef __field
#define __field(type, item) __field_ext(type, item, FILTER_OTHER)

#undef __array
#define __array(type, item, len) \
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
ret = trace_define_field(event_call, #type "[" #len "]", #item, \
offsetof(typeof(field), item), \
sizeof(field.item), 0); \
sizeof(field.item), 0, FILTER_OTHER); \
if (ret) \
return ret;

#undef __dynamic_array
#define __dynamic_array(type, item, len) \
ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
offsetof(typeof(field), __data_loc_##item), \
sizeof(field.__data_loc_##item), 0);
offsetof(typeof(field), __data_loc_##item), \
sizeof(field.__data_loc_##item), 0, \
FILTER_OTHER);

#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
Expand Down Expand Up @@ -320,6 +334,9 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
#undef __field
#define __field(type, item)

#undef __field_ext
#define __field_ext(type, item, filter_type)

#undef __array
#define __array(type, item, len)

Expand Down
11 changes: 8 additions & 3 deletions trunk/kernel/trace/trace_events.c
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,8 @@ DEFINE_MUTEX(event_mutex);
LIST_HEAD(ftrace_events);

int trace_define_field(struct ftrace_event_call *call, const char *type,
const char *name, int offset, int size, int is_signed)
const char *name, int offset, int size, int is_signed,
int filter_type)
{
struct ftrace_event_field *field;

Expand All @@ -44,7 +45,11 @@ int trace_define_field(struct ftrace_event_call *call, const char *type,
if (!field->type)
goto err;

field->filter_type = filter_assign_type(type);
if (filter_type == FILTER_OTHER)
field->filter_type = filter_assign_type(type);
else
field->filter_type = filter_type;

field->offset = offset;
field->size = size;
field->is_signed = is_signed;
Expand All @@ -68,7 +73,7 @@ EXPORT_SYMBOL_GPL(trace_define_field);
ret = trace_define_field(call, #type, "common_" #item, \
offsetof(typeof(ent), item), \
sizeof(ent.item), \
is_signed_type(type)); \
is_signed_type(type), FILTER_OTHER); \
if (ret) \
return ret;

Expand Down
6 changes: 0 additions & 6 deletions trunk/kernel/trace/trace_events_filter.c
Original file line number Diff line number Diff line change
Expand Up @@ -475,12 +475,6 @@ static int filter_add_pred_fn(struct filter_parse_state *ps,
return 0;
}

enum {
FILTER_OTHER = 0,
FILTER_STATIC_STRING,
FILTER_DYN_STRING,
};

int filter_assign_type(const char *type)
{
if (strstr(type, "__data_loc") && strstr(type, "char"))
Expand Down
8 changes: 5 additions & 3 deletions trunk/kernel/trace/trace_export.c
Original file line number Diff line number Diff line change
Expand Up @@ -158,23 +158,25 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
#define TRACE_FIELD(type, item, assign) \
ret = trace_define_field(event_call, #type, #item, \
offsetof(typeof(field), item), \
sizeof(field.item), is_signed_type(type)); \
sizeof(field.item), \
is_signed_type(type), FILTER_OTHER); \
if (ret) \
return ret;

#undef TRACE_FIELD_SPECIAL
#define TRACE_FIELD_SPECIAL(type, item, len, cmd) \
ret = trace_define_field(event_call, #type "[" #len "]", #item, \
offsetof(typeof(field), item), \
sizeof(field.item), 0); \
sizeof(field.item), 0, FILTER_OTHER); \
if (ret) \
return ret;

#undef TRACE_FIELD_SIGN
#define TRACE_FIELD_SIGN(type, item, assign, is_signed) \
ret = trace_define_field(event_call, #type, #item, \
offsetof(typeof(field), item), \
sizeof(field.item), is_signed); \
sizeof(field.item), is_signed, \
FILTER_OTHER); \
if (ret) \
return ret;

Expand Down
6 changes: 4 additions & 2 deletions trunk/kernel/trace/trace_syscalls.c
Original file line number Diff line number Diff line change
Expand Up @@ -194,7 +194,8 @@ int syscall_enter_define_fields(struct ftrace_event_call *call)
for (i = 0; i < meta->nb_args; i++) {
ret = trace_define_field(call, meta->types[i],
meta->args[i], offset,
sizeof(unsigned long), 0);
sizeof(unsigned long), 0,
FILTER_OTHER);
offset += sizeof(unsigned long);
}

Expand All @@ -210,7 +211,8 @@ int syscall_exit_define_fields(struct ftrace_event_call *call)
if (ret)
return ret;

ret = trace_define_field(call, SYSCALL_FIELD(unsigned long, ret), 0);
ret = trace_define_field(call, SYSCALL_FIELD(unsigned long, ret), 0,
FILTER_OTHER);

return ret;
}
Expand Down

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