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

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (24 commits)
  tracing/urgent: warn in case of ftrace_start_up inbalance
  tracing/urgent: fix unbalanced ftrace_start_up
  function-graph: add stack frame test
  function-graph: disable when both x86_32 and optimize for size are configured
  ring-buffer: have benchmark test print to trace buffer
  ring-buffer: do not grab locks in nmi
  ring-buffer: add locks around rb_per_cpu_empty
  ring-buffer: check for less than two in size allocation
  ring-buffer: remove useless compile check for buffer_page size
  ring-buffer: remove useless warn on check
  ring-buffer: use BUF_PAGE_HDR_SIZE in calculating index
  tracing: update sample event documentation
  tracing/filters: fix race between filter setting and module unload
  tracing/filters: free filter_string in destroy_preds()
  ring-buffer: use commit counters for commit pointer accounting
  ring-buffer: remove unused variable
  ring-buffer: have benchmark test handle discarded events
  ring-buffer: prevent adding write in discarded area
  tracing/filters: strloc should be unsigned short
  tracing/filters: operand can be negative
  ...

Fix up kmemcheck-induced conflict in kernel/trace/ring_buffer.c manually

4 files changed, 9 insertions, 2 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 73c0bda73fcd..d1430ef6b4f9 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -34,6 +34,7 @@ config X86
         select HAVE_DYNAMIC_FTRACE
         select HAVE_FUNCTION_TRACER
         select HAVE_FUNCTION_GRAPH_TRACER
+        select HAVE_FUNCTION_GRAPH_FP_TEST
         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
         select HAVE_FTRACE_SYSCALLS
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 9f8ce77dbc64..c097e7d607c6 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -1174,6 +1174,7 @@ ENTRY(ftrace_graph_caller)
         pushl %edx
         movl 0xc(%esp), %edx
         lea 0x4(%ebp), %eax
+        movl (%ebp), %ecx
         subl $MCOUNT_INSN_SIZE, %edx
         call prepare_ftrace_return
         popl %edx
@@ -1188,6 +1189,7 @@ return_to_handler:
         pushl %eax
         pushl %ecx
         pushl %edx
+        movl %ebp, %eax
         call ftrace_return_to_handler
         movl %eax, 0xc(%esp)
         popl %edx
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index de74f0a3e0ed..c251be745107 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -135,6 +135,7 @@ ENTRY(ftrace_graph_caller)
 
         leaq 8(%rbp), %rdi
         movq 0x38(%rsp), %rsi
+        movq (%rbp), %rdx
         subq $MCOUNT_INSN_SIZE, %rsi
 
         call    prepare_ftrace_return
@@ -150,6 +151,7 @@ GLOBAL(return_to_handler)
         /* Save the return values */
         movq %rax, (%rsp)
         movq %rdx, 8(%rsp)
+        movq %rbp, %rdi
 
         call ftrace_return_to_handler
 
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index b79c5533c421..d94e1ea3b9fe 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -408,7 +408,8 @@ int ftrace_disable_ftrace_graph_caller(void)
  * Hook the return address and push it in the stack of return addrs
  * in current thread info.
  */
-void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
+void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
+                           unsigned long frame_pointer)
 {
         unsigned long old;
         int faulted;
@@ -453,7 +454,8 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
                 return;
         }
 
-        if (ftrace_push_return_trace(old, self_addr, &trace.depth) == -EBUSY) {
+        if (ftrace_push_return_trace(old, self_addr, &trace.depth,
+                    frame_pointer) == -EBUSY) {
                 *parent = old;
                 return;
         }