ftrace: have function graph use mcount caller address

Impact: consistency change for function graph This patch makes function graph record the mcount caller address the same way the function tracer does. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
git-mirror · Dec 3, 2008 · bb4304c · bb4304c
1 parent 347fdd9
commit bb4304c
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 0 deletions.
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
@@ -1230,6 +1230,7 @@ ENTRY(ftrace_graph_caller)
 	pushl %edx
 	movl 0xc(%esp), %edx
 	lea 0x4(%ebp), %eax
+	subl $MCOUNT_INSN_SIZE, %edx
 	call prepare_ftrace_return
 	popl %edx
 	popl %ecx

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
@@ -173,6 +173,7 @@ ENTRY(ftrace_graph_caller)
 
 	leaq 8(%rbp), %rdi
 	movq 0x38(%rsp), %rsi
+	subq $MCOUNT_INSN_SIZE, %rsi
 
 	call	prepare_ftrace_return