tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ftrace: Allow to specify filter field type for ftrace events

Browse Source 
Adding FILTER_TRACE_FN event field type for function tracepoint
event, so it can be properly recognized within filtering code.

Currently all fields of ftrace subsystem events share the common
field type FILTER_OTHER. Since the function trace fields need
special care within the filtering code we need to recognize it
properly, hence adding the FILTER_TRACE_FN event type.

Adding filter parameter to the FTRACE_ENTRY macro, to specify the
filter field type for the event.

Link: http://lkml.kernel.org/r/1329317514-8131-7-git-send-email-jolsa@redhat.com

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Jiri Olsa
2012-02-15 15:51:53 +01:00
committed by Steven Rostedt
parent ced39002f5
commit 02aa3162ed
5 changed files with 83 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/trace/trace_export.c
+28 -23
View File
@@ -23,8 +23,10 @@
* function and thus become accesible via perf.
*/
#undef FTRACE_ENTRY_REG
#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, regfn) \
FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, \
filter, regfn) \
FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
filter)
/* not needed for this file */
#undef __field_struct
@@ -52,21 +54,22 @@
#define F_printk(fmt, args...) fmt, args
#undef FTRACE_ENTRY
#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \
struct ____ftrace_##name { \
tstruct \
}; \
static void __always_unused ____ftrace_check_##name(void) \
{ \
struct ____ftrace_##name *__entry = NULL; \
\
/* force compile-time check on F_printk() */ \
printk(print); \
#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
struct ____ftrace_##name { \
tstruct \
}; \
static void __always_unused ____ftrace_check_##name(void) \
{ \
struct ____ftrace_##name *__entry = NULL; \
\
/* force compile-time check on F_printk() */ \
printk(print); \
}
#undef FTRACE_ENTRY_DUP
#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print) \
FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print, filter) \
FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
filter)
#include "trace_entries.h"
@@ -75,7 +78,7 @@ static void __always_unused ____ftrace_check_##name(void) \
ret = trace_define_field(event_call, #type, #item, \
offsetof(typeof(field), item), \
sizeof(field.item), \
is_signed_type(type), FILTER_OTHER); \
is_signed_type(type), filter_type); \
if (ret) \
return ret;
@@ -85,7 +88,7 @@ static void __always_unused ____ftrace_check_##name(void) \
offsetof(typeof(field), \
container.item), \
sizeof(field.container.item), \
is_signed_type(type), FILTER_OTHER); \
is_signed_type(type), filter_type); \
if (ret) \
return ret;
@@ -99,7 +102,7 @@ static void __always_unused ____ftrace_check_##name(void) \
ret = trace_define_field(event_call, event_storage, #item, \
offsetof(typeof(field), item), \
sizeof(field.item), \
is_signed_type(type), FILTER_OTHER); \
is_signed_type(type), filter_type); \
mutex_unlock(&event_storage_mutex); \
if (ret) \
return ret; \
@@ -112,7 +115,7 @@ static void __always_unused ____ftrace_check_##name(void) \
offsetof(typeof(field), \
container.item), \
sizeof(field.container.item), \
is_signed_type(type), FILTER_OTHER); \
is_signed_type(type), filter_type); \
if (ret) \
return ret;
@@ -120,17 +123,18 @@ static void __always_unused ____ftrace_check_##name(void) \
#define __dynamic_array(type, item) \
ret = trace_define_field(event_call, #type, #item, \
offsetof(typeof(field), item), \
0, is_signed_type(type), FILTER_OTHER);\
0, is_signed_type(type), filter_type);\
if (ret) \
return ret;
#undef FTRACE_ENTRY
#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \
#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
int \
ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
{ \
struct struct_name field; \
int ret; \
int filter_type = filter; \
\
tstruct; \
\
@@ -161,7 +165,8 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
#define F_printk(fmt, args...) #fmt ", " __stringify(args)
#undef FTRACE_ENTRY_REG
#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, regfn)\
#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, filter,\
regfn) \
\
struct ftrace_event_class event_class_ftrace_##call = { \
.system = __stringify(TRACE_SYSTEM), \
@@ -180,9 +185,9 @@ struct ftrace_event_call __used \
__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call;
#undef FTRACE_ENTRY
#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print) \
#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print, filter) \
FTRACE_ENTRY_REG(call, struct_name, etype, \
PARAMS(tstruct), PARAMS(print), NULL)
PARAMS(tstruct), PARAMS(print), filter, NULL)
int ftrace_event_is_function(struct ftrace_event_call *call)
{