MIPS: Tracing: Cleanup comments

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1225/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 6 insertions, 5 deletions

diff --git a/arch/mips/kernel/mcount.S b/arch/mips/kernel/mcount.S
index d4a00d29c0bf..9a029d40f6cf 100644
--- a/arch/mips/kernel/mcount.S
+++ b/arch/mips/kernel/mcount.S
@@ -6,6 +6,7 @@
  * more details.
  *
  * Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University, China
+ * Copyright (C) 2010 DSLab, Lanzhou University, China
  * Author: Wu Zhangjin <wuzhangjin@gmail.com>
  */
 
@@ -69,14 +70,14 @@ _mcount:
 
         MCOUNT_SAVE_REGS
 #ifdef KBUILD_MCOUNT_RA_ADDRESS
-        PTR_S   t0, PT_R12(sp)  /* t0 saved the location of the return address(at) by -mmcount-ra-address */
+        PTR_S   t0, PT_R12(sp)  /* save location of parent's return address */
 #endif
 
-        move    a0, ra          /* arg1: next ip, selfaddr */
+        move    a0, ra          /* arg1: self return address */
         .globl ftrace_call
 ftrace_call:
         nop     /* a placeholder for the call to a real tracing function */
-         move   a1, AT          /* arg2: the caller's next ip, parent */
+         move   a1, AT          /* arg2: parent's return address */
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
         .globl ftrace_graph_call
@@ -117,9 +118,9 @@ NESTED(_mcount, PT_SIZE, ra)
 static_trace:
         MCOUNT_SAVE_REGS
 
-        move    a0, ra          /* arg1: next ip, selfaddr */
+        move    a0, ra          /* arg1: self return address */
         jalr    t2              /* (1) call *ftrace_trace_function */
-         move   a1, AT          /* arg2: the caller's next ip, parent */
+         move   a1, AT          /* arg2: parent's return address */
 
         MCOUNT_RESTORE_REGS
         .globl ftrace_stub