Merge branch 'tracing/core' into perf/core

Merge reason: to add event filter support we need the following
commits from the tracing tree:

 3f6fe06: tracing/filters: Unify the regex parsing helpers
 1889d20: tracing/filters: Provide basic regex support
 737f453: tracing/filters: Cleanup useless headers

Signed-off-by: Ingo Molnar <mingo@elte.hu>

3 files changed, 79 insertions, 5 deletions

diff --git a/include/linux/smp_lock.h b/include/linux/smp_lock.h
index 813be59bf345..2ea1dd1ba21c 100644
--- a/include/linux/smp_lock.h
+++ b/include/linux/smp_lock.h
@@ -24,8 +24,21 @@ static inline int reacquire_kernel_lock(struct task_struct *task)
         return 0;
 }
 
-extern void __lockfunc lock_kernel(void)        __acquires(kernel_lock);
-extern void __lockfunc unlock_kernel(void)      __releases(kernel_lock);
+extern void __lockfunc
+_lock_kernel(const char *func, const char *file, int line)
+__acquires(kernel_lock);
+
+extern void __lockfunc
+_unlock_kernel(const char *func, const char *file, int line)
+__releases(kernel_lock);
+
+#define lock_kernel() do {                                      \
+        _lock_kernel(__func__, __FILE__, __LINE__);             \
+} while (0)
+
+#define unlock_kernel() do {                                    \
+        _unlock_kernel(__func__, __FILE__, __LINE__);           \
+} while (0)
 
 /*
  * Various legacy drivers don't really need the BKL in a specific
@@ -41,8 +54,8 @@ static inline void cycle_kernel_lock(void)
 
 #else
 
-#define lock_kernel()                           do { } while(0)
-#define unlock_kernel()                         do { } while(0)
+#define lock_kernel()
+#define unlock_kernel()
 #define release_kernel_lock(task)               do { } while(0)
 #define cycle_kernel_lock()                     do { } while(0)
 #define reacquire_kernel_lock(task)             0
diff --git a/include/trace/events/bkl.h b/include/trace/events/bkl.h
new file mode 100644
index 000000000000..8abd620a490e
--- /dev/null
+++ b/include/trace/events/bkl.h
@@ -0,0 +1,61 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM bkl
+
+#if !defined(_TRACE_BKL_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_BKL_H
+
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(lock_kernel,
+
+        TP_PROTO(const char *func, const char *file, int line),
+
+        TP_ARGS(func, file, line),
+
+        TP_STRUCT__entry(
+                __field(        int,            lock_depth              )
+                __field_ext(    const char *,   func, FILTER_PTR_STRING )
+                __field_ext(    const char *,   file, FILTER_PTR_STRING )
+                __field(        int,            line                    )
+        ),
+
+        TP_fast_assign(
+                /* We want to record the lock_depth after lock is acquired */
+                __entry->lock_depth = current->lock_depth + 1;
+                __entry->func = func;
+                __entry->file = file;
+                __entry->line = line;
+        ),
+
+        TP_printk("depth: %d, %s:%d %s()", __entry->lock_depth,
+                  __entry->file, __entry->line, __entry->func)
+);
+
+TRACE_EVENT(unlock_kernel,
+
+        TP_PROTO(const char *func, const char *file, int line),
+
+        TP_ARGS(func, file, line),
+
+        TP_STRUCT__entry(
+                __field(int,            lock_depth)
+                __field(const char *,   func)
+                __field(const char *,   file)
+                __field(int,            line)
+        ),
+
+        TP_fast_assign(
+                __entry->lock_depth = current->lock_depth;
+                __entry->func = func;
+                __entry->file = file;
+                __entry->line = line;
+        ),
+
+        TP_printk("depth: %d, %s:%d %s()", __entry->lock_depth,
+                  __entry->file, __entry->line, __entry->func)
+);
+
+#endif /* _TRACE_BKL_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index 5dc283ba5ae0..e972f0a40f8d 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -33,7 +33,7 @@ struct syscall_metadata {
 };
 
 #ifdef CONFIG_FTRACE_SYSCALLS
-extern struct syscall_metadata *syscall_nr_to_meta(int nr);
+extern unsigned long arch_syscall_addr(int nr);
 extern int syscall_name_to_nr(char *name);
 void set_syscall_enter_id(int num, int id);
 void set_syscall_exit_id(int num, int id);