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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 12:52:05 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 12:52:05 -0400
commit47a469421d792dcb91a1e73319d26134241953d2 (patch)
tree6a388381a434ebe87fed2fbb10a53ced7a7ce8b5 /include/linux/compiler-gcc4.h
parentc13c81006314ad76c2b31824960a900385601b8b (diff)
parent51229b495340bd7a02ce3622d1966829b67054ea (diff)
Merge branch 'akpm' (patches from Andrew)
Merge second patchbomb from Andrew Morton: - most of the rest of MM - lots of misc things - procfs updates - printk feature work - updates to get_maintainer, MAINTAINERS, checkpatch - lib/ updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (96 commits) exit,stats: /* obey this comment */ coredump: add __printf attribute to cn_*printf functions coredump: use from_kuid/kgid when formatting corename fs/reiserfs: remove unneeded cast NILFS2: support NFSv2 export fs/befs/btree.c: remove unneeded initializations fs/minix: remove unneeded cast init/do_mounts.c: add create_dev() failure log kasan: remove duplicate definition of the macro KASAN_FREE_PAGE fs/efs: femove unneeded cast checkpatch: emit "NOTE: <types>" message only once after multiple files checkpatch: emit an error when there's a diff in a changelog checkpatch: validate MODULE_LICENSE content checkpatch: add multi-line handling for PREFER_ETHER_ADDR_COPY checkpatch: suggest using eth_zero_addr() and eth_broadcast_addr() checkpatch: fix processing of MEMSET issues checkpatch: suggest using ether_addr_equal*() checkpatch: avoid NOT_UNIFIED_DIFF errors on cover-letter.patch files checkpatch: remove local from codespell path checkpatch: add --showfile to allow input via pipe to show filenames ...
Diffstat (limited to 'include/linux/compiler-gcc4.h')
-rw-r--r--include/linux/compiler-gcc4.h91
1 files changed, 0 insertions, 91 deletions
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
deleted file mode 100644
index 769e19864632..000000000000
--- a/include/linux/compiler-gcc4.h
+++ /dev/null
@@ -1,91 +0,0 @@
1#ifndef __LINUX_COMPILER_H
2#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead."
3#endif
4
5/* GCC 4.1.[01] miscompiles __weak */
6#ifdef __KERNEL__
7# if GCC_VERSION >= 40100 && GCC_VERSION <= 40101
8# error Your version of gcc miscompiles the __weak directive
9# endif
10#endif
11
12#define __used __attribute__((__used__))
13#define __must_check __attribute__((warn_unused_result))
14#define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
15
16#if GCC_VERSION >= 40100 && GCC_VERSION < 40600
17# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
18#endif
19
20#if GCC_VERSION >= 40300
21/* Mark functions as cold. gcc will assume any path leading to a call
22 to them will be unlikely. This means a lot of manual unlikely()s
23 are unnecessary now for any paths leading to the usual suspects
24 like BUG(), printk(), panic() etc. [but let's keep them for now for
25 older compilers]
26
27 Early snapshots of gcc 4.3 don't support this and we can't detect this
28 in the preprocessor, but we can live with this because they're unreleased.
29 Maketime probing would be overkill here.
30
31 gcc also has a __attribute__((__hot__)) to move hot functions into
32 a special section, but I don't see any sense in this right now in
33 the kernel context */
34#define __cold __attribute__((__cold__))
35
36#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
37
38#ifndef __CHECKER__
39# define __compiletime_warning(message) __attribute__((warning(message)))
40# define __compiletime_error(message) __attribute__((error(message)))
41#endif /* __CHECKER__ */
42#endif /* GCC_VERSION >= 40300 */
43
44#if GCC_VERSION >= 40500
45/*
46 * Mark a position in code as unreachable. This can be used to
47 * suppress control flow warnings after asm blocks that transfer
48 * control elsewhere.
49 *
50 * Early snapshots of gcc 4.5 don't support this and we can't detect
51 * this in the preprocessor, but we can live with this because they're
52 * unreleased. Really, we need to have autoconf for the kernel.
53 */
54#define unreachable() __builtin_unreachable()
55
56/* Mark a function definition as prohibited from being cloned. */
57#define __noclone __attribute__((__noclone__))
58
59#endif /* GCC_VERSION >= 40500 */
60
61#if GCC_VERSION >= 40600
62/*
63 * Tell the optimizer that something else uses this function or variable.
64 */
65#define __visible __attribute__((externally_visible))
66#endif
67
68/*
69 * GCC 'asm goto' miscompiles certain code sequences:
70 *
71 * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
72 *
73 * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
74 *
75 * (asm goto is automatically volatile - the naming reflects this.)
76 */
77#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
78
79#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
80#if GCC_VERSION >= 40400
81#define __HAVE_BUILTIN_BSWAP32__
82#define __HAVE_BUILTIN_BSWAP64__
83#endif
84#if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600)
85#define __HAVE_BUILTIN_BSWAP16__
86#endif
87#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
88
89#if GCC_VERSION >= 40902
90#define KASAN_ABI_VERSION 3
91#endif