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1Userspace RCU library licensing
2Mathieu Desnoyers
323baef5 3September 3, 2012
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6* LGPLv2.1
7
af02d47e 8The library part is distributed under LGPLv2.1 or later. See lgpl-2.1.txt for
323baef5 9license details. Refer to the individual file headers for details.
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10
11LGPL-compatible source code can statically use the library header using :
12
13#define _LGPL_SOURCE
14#include <urcu.h>
15
16Dynamic-only linking with the LGPL library is used if _LGPL_SOURCE is not
17defined. It permits relinking with newer versions of the library, which is
18required by the LGPL license.
19
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20See lgpl-relicensing.txt for details.
21
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22
23* MIT-style license :
24
1050892f 25xchg() primitive has been rewritten from scratch starting from atomic_ops 1.2
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26which has a MIT-style license that is intended to allow use in both free and
27proprietary software:
28 http://www.hpl.hp.com/research/linux/atomic_ops/LICENSING.txt
29 http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/
30
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31This MIT-style license (BSD like) apply to:
32
33uatomic/gcc.h
34uatomic/unknown.h
35uatomic/generic.h
36uatomic/sparc64.h
37uatomic/arm.h
38uatomic/ppc.h
39uatomic/x86.h
40uatomic.h
41
42MIT/X11 (BSD like) license apply to:
0114ba7f 43
2dc5fa0f 44compiler.h
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45arch/s390.h
46uatomic/alpha.h
47uatomic/mips.h
859050b3 48uatomic/nios2.h
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49uatomic/s390.h
50system.h
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51
52
53* GPLv2
54
af02d47e 55Library test code is distributed under the GPLv2 license. See gpl-2.0.txt for
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56license details. See headers of individual files under tests/ for details.
57
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59* GPLv3 (or later)
60
61The following build-related macro is under GPLv3 (or later):
62
63m4/ax_tls.m4
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