Create separate document for relicensing details

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>

diff --git a/LICENSE b/LICENSE
index 4aba77615e4774adb1fa82292535a5b84fdc4b01..fa10831b3343830e557839f2b5b2670d1932f4a1 100644 (file)
--- a/LICENSE
+++ b/LICENSE
@@ -23,6 +23,8 @@ Dynamic-only linking with the LGPL library is used if _LGPL_SOURCE is not
 defined. It permits relinking with newer versions of the library, which is
 required by the LGPL license.
 
+See lgpl-relicensing.txt for details.
+
 
 * MIT-style license :
 
@@ -51,10 +53,3 @@ test_urcu.c
 test_urcu_yield.c
 test_rwlock_timing.c
 urcu-asm.c
-
-
-Various details :
-
-ACCESS_ONCE(), likely(), unlikely() and barrier() are considered trivial enough
-that copyright does not apply to them. I (Mathieu Desnoyers) re-typed them from
-scratch in a mail client just to prove it.

diff --git a/lgpl-relicensing.txt b/lgpl-relicensing.txt
new file mode 100644 (file)
index 0000000..853c004
--- /dev/null
+++ b/lgpl-relicensing.txt
@@ -0,0 +1,16 @@
+Mathieu Desnoyers
+May 13th, 2009
+
+IBM Corporation allowed LGPLv2.1+ licensing of their contribution to the
+userspace RCU library.
+
+ACCESS_ONCE(), likely(), unlikely() and barrier() are considered trivial enough
+that copyright does not apply to them. I (Mathieu Desnoyers) re-typed them from
+scratch in a mail client just to prove it.
+
+Bert Wesarg <bert.wesarg@googlemail.com> approved LGPL relicensing of his patch.
+
+xchg() primitives has been rewritten from a MIT-licensed cmpxchg for Intel and
+powerpc. They are MIT-licensed and therefore usable in LGPL code.
+
+I am therefore permitted to relicense the userspace RCU library as LGPLv2.1.