Merge branch 'for-3.5' of ../cgroup into block/for-3.5/core-merged

cgroup/for-3.5 contains the following changes which blk-cgroup needs
to proceed with the on-going cleanup.

* Dynamic addition and removal of cftypes to make config/stat file
  handling modular for policies.

* cgroup removal update to not wait for css references to drain to fix
  blkcg removal hang caused by cfq caching cfqgs.

Pull in cgroup/for-3.5 into block/for-3.5/core.  This causes the
following conflicts in block/blk-cgroup.c.

* 761b3ef50e "cgroup: remove cgroup_subsys argument from callbacks"
  conflicts with blkiocg_pre_destroy() addition and blkiocg_attach()
  removal.  Resolved by removing @subsys from all subsys methods.

* 676f7c8f84 "cgroup: relocate cftype and cgroup_subsys definitions in
  controllers" conflicts with ->pre_destroy() and ->attach() updates
  and removal of modular config.  Resolved by dropping forward
  declarations of the methods and applying updates to the relocated
  blkio_subsys.

* 4baf6e3325 "cgroup: convert all non-memcg controllers to the new
  cftype interface" builds upon the previous item.  Resolved by adding
  ->base_cftypes to the relocated blkio_subsys.

Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 45 insertions, 21 deletions

diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index bbeec31e0ae3..3dd15e8bc856 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -18,6 +18,16 @@
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM    ftrace
 
+/*
+ * The FTRACE_ENTRY_REG macro allows ftrace entry to define register
+ * function and thus become accesible via perf.
+ */
+#undef FTRACE_ENTRY_REG
+#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
 #define __field_struct(type, item)
@@ -44,21 +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"
 
@@ -67,7 +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;
 
@@ -77,7 +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;
 
@@ -91,7 +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;                                     \
@@ -104,7 +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;
 
@@ -112,17 +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;                                                        \
                                                                         \
@@ -150,15 +162,17 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call)	\
 #define __dynamic_array(type, item)
 
 #undef F_printk
-#define F_printk(fmt, args...) #fmt ", "  __stringify(args)
+#define F_printk(fmt, args...) __stringify(fmt) ", "  __stringify(args)
 
-#undef FTRACE_ENTRY
-#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print)          \
+#undef FTRACE_ENTRY_REG
+#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, filter,\
+                         regfn)                                         \
                                                                         \
 struct ftrace_event_class event_class_ftrace_##call = {                 \
         .system                 = __stringify(TRACE_SYSTEM),            \
         .define_fields          = ftrace_define_fields_##call,          \
         .fields                 = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
+        .reg                    = regfn,                                \
 };                                                                      \
                                                                         \
 struct ftrace_event_call __used event_##call = {                        \
@@ -170,4 +184,14 @@ struct ftrace_event_call __used event_##call = {			\
 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, filter)  \
+        FTRACE_ENTRY_REG(call, struct_name, etype,                      \
+                         PARAMS(tstruct), PARAMS(print), filter, NULL)
+
+int ftrace_event_is_function(struct ftrace_event_call *call)
+{
+        return call == &event_function;
+}
+
 #include "trace_entries.h"