[PATCH 4 of 5] xentrace: update comments

[Olaf Hering <olaf@aepfle.de>]

# HG changeset patch
# User Olaf Hering <olaf@aepfle.de>
# Date 1300813699 -3600
# Node ID e58f6949e76a2786c4f5a99a0da44ee58743b4df
# Parent  364ccfbfb31f3280a5ac32f8f50cf5c84087eb39
xentrace: update comments

Fix a typo, remove redundant comment.

Signed-off-by: Olaf Hering <olaf@aepfle.de>

diff -r 364ccfbfb31f -r e58f6949e76a xen/common/trace.c
--- a/xen/common/trace.c	Tue Mar 22 18:08:15 2011 +0100
+++ b/xen/common/trace.c	Tue Mar 22 18:08:19 2011 +0100
@@ -196,12 +196,11 @@
     t_info->tbuf_size = pages;
 
     /*
-     * Now share the pages to xentrace can map them, and write them in
+     * Now share the pages so xentrace can map them, and write them in
      * the global t_info structure.
      */
     for_each_online_cpu(cpu)
     {
-        /* Share pages so that xentrace can map them. */
         void *rawbuf = per_cpu(t_bufs, cpu);
         struct page_info *p = virt_to_page(rawbuf);
         uint32_t mfn = virt_to_mfn(rawbuf);