ftrace/x86: Update i386 call to prepare_ftrace_return()
The parameters for prepare_ftrace_return() used by the function graph
tracer were swapped to simplify the code on x86_64. But i386 function
graph trampoline also calls this function, and it did not have its
parameters swapped.
Link: http://lkml.kernel.org/r/20141210231732.GA24163@wfg-t540p.sh.intel.com
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Fixes: 6a06bdbf7f9c "ftrace/fgraph/x86: Have prepare_ftrace_return() take ip as first parameter"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index b553ed8..df3e608 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -1192,10 +1192,10 @@
pushl %eax
pushl %ecx
pushl %edx
- movl 0xc(%esp), %edx
- lea 0x4(%ebp), %eax
+ movl 0xc(%esp), %eax
+ lea 0x4(%ebp), %edx
movl (%ebp), %ecx
- subl $MCOUNT_INSN_SIZE, %edx
+ subl $MCOUNT_INSN_SIZE, %eax
call prepare_ftrace_return
popl %edx
popl %ecx