[PATCH trivial v2] UAPI: Kbuild: add/modify comments for "uapi/Kbuild"and "uapi/linux/Kbuild"

[Chen Gang]

"include/uapi/" is the whole Linux kernel API, it is important enough
to get more global explanations by comments.

In "include/uapi/Kbuild", "Makefile..." and "non-arch..." comments are
meaningless for current 'Kbuild', so delete them.

And add more explanations for "include/uapi/" in "include/uapi/Kbuild",


Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
---
 include/uapi/Kbuild |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/uapi/Kbuild b/include/uapi/Kbuild
index 81d2106..287e8d0 100644
--- a/include/uapi/Kbuild
+++ b/include/uapi/Kbuild
@@ -1,7 +1,8 @@
 # UAPI Header export list
-# Top-level Makefile calls into asm-$(ARCH)
-# List only non-arch directories below
-
+#
+# UAPI means "Userspace API" which will be installed to "/usr/include".
+# Except "linux/", the other current level directories are for compatibility.
+# It will not accept the new additional current level directories or files.
 
 header-y += asm-generic/
 header-y += linux/
-- 
1.7.7.6
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