Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (40 commits)
  tracing: Separate raw syscall from syscall tracer
  ring-buffer-benchmark: Add parameters to set produce/consumer priorities
  tracing, function tracer: Clean up strstrip() usage
  ring-buffer benchmark: Run producer/consumer threads at nice +19
  tracing: Remove the stale include/trace/power.h
  tracing: Only print objcopy version warning once from recordmcount
  tracing: Prevent build warning: 'ftrace_graph_buf' defined but not used
  ring-buffer: Move access to commit_page up into function used
  tracing: do not disable interrupts for trace_clock_local
  ring-buffer: Add multiple iterations between benchmark timestamps
  kprobes: Sanitize struct kretprobe_instance allocations
  tracing: Fix to use __always_unused attribute
  compiler: Introduce __always_unused
  tracing: Exit with error if a weak function is used in recordmcount.pl
  tracing: Move conditional into update_funcs() in recordmcount.pl
  tracing: Add regex for weak functions in recordmcount.pl
  tracing: Move mcount section search to front of loop in recordmcount.pl
  tracing: Fix objcopy revision check in recordmcount.pl
  tracing: Check absolute path of input file in recordmcount.pl
  tracing: Correct the check for number of arguments in recordmcount.pl
  ...

3 files changed, 22 insertions, 4 deletions

diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index a3ed7cb8ca34..73dcf804bc94 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -79,6 +79,7 @@
 #define  noinline                       __attribute__((noinline))
 #define __attribute_const__             __attribute__((__const__))
 #define __maybe_unused                  __attribute__((unused))
+#define __always_unused                 __attribute__((unused))
 
 #define __gcc_header(x) #x
 #define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h)
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 59f208926d13..acbd654cc850 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -218,6 +218,10 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 # define __maybe_unused         /* unimplemented */
 #endif
 
+#ifndef __always_unused
+# define __always_unused        /* unimplemented */
+#endif
+
 #ifndef noinline
 #define noinline
 #endif
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