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The following text was taken from the original review request:

Browse source 
"[RFC - PATCH 0/7] consolidation of BUG support code."
 		https://lkml.org/lkml/2012/1/26/525
 --
 
 The changes shown here are to unify linux's BUG support under
 the one <linux/bug.h> file.  Due to historical reasons, we have
 some BUG code in bug.h and some in kernel.h -- i.e. the support for
 BUILD_BUG in linux/kernel.h predates the addition of linux/bug.h,
 but old code in kernel.h wasn't moved to bug.h at that time.  As
 a band-aid, kernel.h was including <asm/bug.h> to pseudo link them.
 
 This has caused confusion[1] and general yuck/WTF[2] reactions.
 Here is an example that violates the principle of least surprise:
 
       CC      lib/string.o
       lib/string.c: In function 'strlcat':
       lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON'
       make[2]: *** [lib/string.o] Error 1
       $
       $ grep linux/bug.h lib/string.c
       #include <linux/bug.h>
       $
 
 We've included <linux/bug.h> for the BUG infrastructure and yet we
 still get a compile fail!  [We've not kernel.h for BUILD_BUG_ON.]
 Ugh - very confusing for someone who is new to kernel development.
 
 With the above in mind, the goals of this changeset are:
 
 1) find and fix any include/*.h files that were relying on the
    implicit presence of BUG code.
 2) find and fix any C files that were consuming kernel.h and
    hence relying on implicitly getting some/all BUG code.
 3) Move the BUG related code living in kernel.h to <linux/bug.h>
 4) remove the asm/bug.h from kernel.h to finally break the chain.
 
 During development, the order was more like 3-4, build-test, 1-2.
 But to ensure that git history for bisect doesn't get needless
 build failures introduced, the commits have been reorderd to fix
 the problem areas in advance.
 
 [1]  https://lkml.org/lkml/2012/1/3/90
 [2]  https://lkml.org/lkml/2012/1/17/414
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Merge tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull <linux/bug.h> cleanup from Paul Gortmaker:
 "The changes shown here are to unify linux's BUG support under the one
  <linux/bug.h> file.  Due to historical reasons, we have some BUG code
  in bug.h and some in kernel.h -- i.e.  the support for BUILD_BUG in
  linux/kernel.h predates the addition of linux/bug.h, but old code in
  kernel.h wasn't moved to bug.h at that time.  As a band-aid, kernel.h
  was including <asm/bug.h> to pseudo link them.

  This has caused confusion[1] and general yuck/WTF[2] reactions.  Here
  is an example that violates the principle of least surprise:

      CC      lib/string.o
      lib/string.c: In function 'strlcat':
      lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON'
      make[2]: *** [lib/string.o] Error 1
      $
      $ grep linux/bug.h lib/string.c
      #include <linux/bug.h>
      $

  We've included <linux/bug.h> for the BUG infrastructure and yet we
  still get a compile fail! [We've not kernel.h for BUILD_BUG_ON.] Ugh -
  very confusing for someone who is new to kernel development.

  With the above in mind, the goals of this changeset are:

  1) find and fix any include/*.h files that were relying on the
     implicit presence of BUG code.
  2) find and fix any C files that were consuming kernel.h and hence
     relying on implicitly getting some/all BUG code.
  3) Move the BUG related code living in kernel.h to <linux/bug.h>
  4) remove the asm/bug.h from kernel.h to finally break the chain.

  During development, the order was more like 3-4, build-test, 1-2.  But
  to ensure that git history for bisect doesn't get needless build
  failures introduced, the commits have been reorderd to fix the problem
  areas in advance.

	[1]  https://lkml.org/lkml/2012/1/3/90
	[2]  https://lkml.org/lkml/2012/1/17/414"

Fix up conflicts (new radeon file, reiserfs header cleanups) as per Paul
and linux-next.

* tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  kernel.h: doesn't explicitly use bug.h, so don't include it.
  bug: consolidate BUILD_BUG_ON with other bug code
  BUG: headers with BUG/BUG_ON etc. need linux/bug.h
  bug.h: add include of it to various implicit C users
  lib: fix implicit users of kernel.h for TAINT_WARN
  spinlock: macroize assert_spin_locked to avoid bug.h dependency
  x86: relocate get/set debugreg fcns to include/asm/debugreg.
This commit is contained in:
Linus Torvalds 2012-03-24 10:08:39 -07:00
commit ed2d265d12
93 changed files with 223 additions and 132 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
arch/arm/mach-imx/cpu_op-mx51.c
View file

@ -11,6 +11,7 @@
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/bug.h>
#include <linux/types.h>
#include <mach/hardware.h>
#include <linux/kernel.h>

1
arch/arm/mach-ux500/board-mop500-pins.c
View file

@ -6,6 +6,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/bug.h>
#include <asm/mach-types.h>
#include <plat/pincfg.h>

1
arch/avr32/include/asm/io.h
View file

@ -1,6 +1,7 @@
#ifndef __ASM_AVR32_IO_H
#define __ASM_AVR32_IO_H
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/types.h>

1
arch/m68k/include/asm/system.h
View file

@ -3,6 +3,7 @@
#include <linux/linkage.h>
#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/irqflags.h>
#include <asm/segment.h>
#include <asm/entry.h>

1
arch/mips/fw/arc/cmdline.c
View file

@ -7,6 +7,7 @@
*
* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
*/
#include <linux/bug.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>

1
arch/mips/fw/arc/identify.c
View file

@ -11,6 +11,7 @@
*
* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
*/
#include <linux/bug.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>

1
arch/parisc/math-emu/fpudispatch.c
View file

@ -50,6 +50,7 @@
#define FPUDEBUG 0
#include "float.h"
#include <linux/bug.h>
#include <linux/kernel.h>
#include <asm/processor.h>
/* #include <sys/debug.h> */

1
arch/powerpc/kernel/pmc.c
View file

@ -13,6 +13,7 @@
*/
#include <linux/errno.h>
#include <linux/bug.h>
#include <linux/spinlock.h>
#include <linux/export.h>

1
arch/powerpc/xmon/ppc-opc.c
View file

@ -22,6 +22,7 @@
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/bug.h>
#include "nonstdio.h"
#include "ppc.h"

1
arch/powerpc/xmon/spu-opc.c
View file

@ -19,6 +19,7 @@
51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
#include <linux/kernel.h>
#include <linux/bug.h>
#include "spu.h"
/* This file holds the Spu opcode table */

1
arch/sparc/include/asm/vga.h
View file

@ -7,6 +7,7 @@
#ifndef _LINUX_ASM_VGA_H_
#define _LINUX_ASM_VGA_H_
#include <linux/bug.h>
#include <asm/types.h>
#define VT_BUF_HAVE_RW

67
arch/x86/include/asm/debugreg.h
View file

@ -78,8 +78,75 @@
*/
#ifdef __KERNEL__
#include <linux/bug.h>
DECLARE_PER_CPU(unsigned long, cpu_dr7);
#ifndef CONFIG_PARAVIRT
/*
* These special macros can be used to get or set a debugging register
*/
#define get_debugreg(var, register) \
(var) = native_get_debugreg(register)
#define set_debugreg(value, register) \
native_set_debugreg(register, value)
#endif
static inline unsigned long native_get_debugreg(int regno)
{
unsigned long val = 0; /* Damn you, gcc! */
switch (regno) {
case 0:
asm("mov %%db0, %0" :"=r" (val));
break;
case 1:
asm("mov %%db1, %0" :"=r" (val));
break;
case 2:
asm("mov %%db2, %0" :"=r" (val));
break;
case 3:
asm("mov %%db3, %0" :"=r" (val));
break;
case 6:
asm("mov %%db6, %0" :"=r" (val));
break;
case 7:
asm("mov %%db7, %0" :"=r" (val));
break;
default:
BUG();
}
return val;
}
static inline void native_set_debugreg(int regno, unsigned long value)
{
switch (regno) {
case 0:
asm("mov %0, %%db0" ::"r" (value));
break;
case 1:
asm("mov %0, %%db1" ::"r" (value));
break;
case 2:
asm("mov %0, %%db2" ::"r" (value));
break;
case 3:
asm("mov %0, %%db3" ::"r" (value));
break;
case 6:
asm("mov %0, %%db6" ::"r" (value));
break;
case 7:
asm("mov %0, %%db7" ::"r" (value));
break;
default:
BUG();
}
}
static inline void hw_breakpoint_disable(void)
{
/* Zero the control register for HW Breakpoint */

1
arch/x86/include/asm/paravirt.h
View file

@ -10,6 +10,7 @@
#include <asm/paravirt_types.h>
#ifndef __ASSEMBLY__
#include <linux/bug.h>
#include <linux/types.h>
#include <linux/cpumask.h>

63
arch/x86/include/asm/processor.h
View file

@ -475,61 +475,6 @@ struct thread_struct {
unsigned io_bitmap_max;
};
static inline unsigned long native_get_debugreg(int regno)
{
unsigned long val = 0; /* Damn you, gcc! */
switch (regno) {
case 0:
asm("mov %%db0, %0" :"=r" (val));
break;
case 1:
asm("mov %%db1, %0" :"=r" (val));
break;
case 2:
asm("mov %%db2, %0" :"=r" (val));
break;
case 3:
asm("mov %%db3, %0" :"=r" (val));
break;
case 6:
asm("mov %%db6, %0" :"=r" (val));
break;
case 7:
asm("mov %%db7, %0" :"=r" (val));
break;
default:
BUG();
}
return val;
}
static inline void native_set_debugreg(int regno, unsigned long value)
{
switch (regno) {
case 0:
asm("mov %0, %%db0" ::"r" (value));
break;
case 1:
asm("mov %0, %%db1" ::"r" (value));
break;
case 2:
asm("mov %0, %%db2" ::"r" (value));
break;
case 3:
asm("mov %0, %%db3" ::"r" (value));
break;
case 6:
asm("mov %0, %%db6" ::"r" (value));
break;
case 7:
asm("mov %0, %%db7" ::"r" (value));
break;
default:
BUG();
}
}
/*
* Set IOPL bits in EFLAGS from given mask
*/
@ -575,14 +520,6 @@ static inline void native_swapgs(void)
#define __cpuid native_cpuid
#define paravirt_enabled() 0
/*
* These special macros can be used to get or set a debugging register
*/
#define get_debugreg(var, register) \
(var) = native_get_debugreg(register)
#define set_debugreg(value, register) \
native_set_debugreg(register, value)
static inline void load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{

1
arch/x86/kernel/cpu/common.c
View file

@ -18,6 +18,7 @@
#include <asm/archrandom.h>
#include <asm/hypervisor.h>
#include <asm/processor.h>
#include <asm/debugreg.h>
#include <asm/sections.h>
#include <linux/topology.h>
#include <linux/cpumask.h>

1
arch/x86/kernel/paravirt.c
View file

@ -26,6 +26,7 @@
#include <asm/bug.h>
#include <asm/paravirt.h>
#include <asm/debugreg.h>
#include <asm/desc.h>
#include <asm/setup.h>
#include <asm/pgtable.h>

1
arch/x86/mm/kmemcheck/selftest.c
View file

@ -1,3 +1,4 @@
#include <linux/bug.h>
#include <linux/kernel.h>
#include "opcode.h"

1
drivers/gpu/drm/radeon/cayman_blit_shaders.c
View file

@ -24,6 +24,7 @@
* Alex Deucher <alexander.deucher@amd.com>
*/
#include <linux/bug.h>
#include <linux/types.h>
#include <linux/kernel.h>

1
drivers/gpu/drm/radeon/evergreen_blit_shaders.c
View file

@ -24,6 +24,7 @@
* Alex Deucher <alexander.deucher@amd.com>
*/
#include <linux/bug.h>
#include <linux/types.h>
#include <linux/kernel.h>

1
drivers/gpu/drm/radeon/r600_blit_shaders.c
View file

@ -24,6 +24,7 @@
* Alex Deucher <alexander.deucher@amd.com>
*/
#include <linux/bug.h>
#include <linux/types.h>
#include <linux/kernel.h>

1
drivers/gpu/drm/radeon/si_blit_shaders.c
View file

@ -25,6 +25,7 @@
*/
#include <linux/types.h>
#include <linux/bug.h>
#include <linux/kernel.h>
const u32 si_default_state[] =

1
drivers/staging/wlags49_h2/hcf.c
View file

@ -91,6 +91,7 @@
#include "hcf.h" // HCF and MSF common include file
#include "hcfdef.h" // HCF specific include file
#include "mmd.h" // MoreModularDriver common include file
#include <linux/bug.h>
#include <linux/kernel.h>
#if ! defined offsetof

1
fs/reiserfs/reiserfs.h
View file

@ -7,6 +7,7 @@
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bug.h>
#include <linux/workqueue.h>
#include <asm/unaligned.h>
#include <linux/bitops.h>

1
include/asm-generic/dma-mapping-common.h
View file

@ -2,6 +2,7 @@
#define _ASM_GENERIC_DMA_MAPPING_H
#include <linux/kmemcheck.h>
#include <linux/bug.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <linux/dma-attrs.h>

1
include/asm-generic/pgtable.h
View file

@ -5,6 +5,7 @@
#ifdef CONFIG_MMU
#include <linux/mm_types.h>
#include <linux/bug.h>
#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
extern int ptep_set_access_flags(struct vm_area_struct *vma,

2
include/asm-generic/tlbflush.h
View file

@ -9,6 +9,8 @@
#error need to implement an architecture specific asm/tlbflush.h
#endif
#include <linux/bug.h>
static inline void flush_tlb_mm(struct mm_struct *mm)
{
BUG();

1
include/drm/ttm/ttm_memory.h
View file

@ -30,6 +30,7 @@
#include <linux/workqueue.h>
#include <linux/spinlock.h>
#include <linux/bug.h>
#include <linux/wait.h>
#include <linux/errno.h>
#include <linux/kobject.h>

1
include/linux/atmdev.h
View file

@ -217,6 +217,7 @@ struct atm_cirange {
#include <linux/wait.h> /* wait_queue_head_t */
#include <linux/time.h> /* struct timeval */
#include <linux/net.h>
#include <linux/bug.h>
#include <linux/skbuff.h> /* struct sk_buff */
#include <linux/uio.h>
#include <net/sock.h>

1
include/linux/bio.h
View file

@ -23,6 +23,7 @@
#include <linux/highmem.h>
#include <linux/mempool.h>
#include <linux/ioprio.h>
#include <linux/bug.h>
#ifdef CONFIG_BLOCK

1
include/linux/bit_spinlock.h
View file

@ -4,6 +4,7 @@
#include <linux/kernel.h>
#include <linux/preempt.h>
#include <linux/atomic.h>
#include <linux/bug.h>
/*
* bit-based spin_lock()

61
include/linux/bug.h
View file

@ -11,6 +11,67 @@ enum bug_trap_type {
struct pt_regs;
#ifdef __CHECKER__
#define BUILD_BUG_ON_NOT_POWER_OF_2(n)
#define BUILD_BUG_ON_ZERO(e) (0)
#define BUILD_BUG_ON_NULL(e) ((void*)0)
#define BUILD_BUG_ON(condition)
#define BUILD_BUG() (0)
#else /* __CHECKER__ */
/* Force a compilation error if a constant expression is not a power of 2 */
#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \
BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
/* Force a compilation error if condition is true, but also produce a
result (of value 0 and type size_t), so the expression can be used
e.g. in a structure initializer (or where-ever else comma expressions
aren't permitted). */
#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
/**
* BUILD_BUG_ON - break compile if a condition is true.
* @condition: the condition which the compiler should know is false.
*
* If you have some code which relies on certain constants being equal, or
* other compile-time-evaluated condition, you should use BUILD_BUG_ON to
* detect if someone changes it.
*
* The implementation uses gcc's reluctance to create a negative array, but
* gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
* to inline functions). So as a fallback we use the optimizer; if it can't
* prove the condition is false, it will cause a link error on the undefined
* "__build_bug_on_failed". This error message can be harder to track down
* though, hence the two different methods.
*/
#ifndef __OPTIMIZE__
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
#else
extern int __build_bug_on_failed;
#define BUILD_BUG_ON(condition) \
do { \
((void)sizeof(char[1 - 2*!!(condition)])); \
if (condition) __build_bug_on_failed = 1; \
} while(0)
#endif
/**
* BUILD_BUG - break compile if used.
*
* If you have some code that you expect the compiler to eliminate at
* build time, you should use BUILD_BUG to detect if it is
* unexpectedly used.
*/
#define BUILD_BUG() \
do { \
extern void __build_bug_failed(void) \
__linktime_error("BUILD_BUG failed"); \
__build_bug_failed(); \
} while (0)
#endif /* __CHECKER__ */
#ifdef CONFIG_GENERIC_BUG
#include <asm-generic/bug.h>

3
include/linux/ceph/decode.h
View file

@ -1,8 +1,9 @@
#ifndef __CEPH_DECODE_H
#define __CEPH_DECODE_H
#include <asm/unaligned.h>
#include <linux/bug.h>
#include <linux/time.h>
#include <asm/unaligned.h>
#include "types.h"

1
include/linux/ceph/libceph.h
View file

@ -7,6 +7,7 @@
#include <linux/backing-dev.h>
#include <linux/completion.h>
#include <linux/exportfs.h>
#include <linux/bug.h>
#include <linux/fs.h>
#include <linux/mempool.h>
#include <linux/pagemap.h>

1
include/linux/ceph/mdsmap.h
View file

@ -1,6 +1,7 @@
#ifndef _FS_CEPH_MDSMAP_H
#define _FS_CEPH_MDSMAP_H
#include <linux/bug.h>
#include "types.h"
/*

1
include/linux/cpumask.h
View file

@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/threads.h>
#include <linux/bitmap.h>
#include <linux/bug.h>
typedef struct cpumask { DECLARE_BITMAP(bits, NR_CPUS); } cpumask_t;

1
include/linux/crypto.h
View file

@ -20,6 +20,7 @@
#include <linux/atomic.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/uaccess.h>

1
include/linux/debug_locks.h
View file

@ -3,6 +3,7 @@
#include <linux/kernel.h>
#include <linux/atomic.h>
#include <linux/bug.h>
#include <asm/system.h>
struct task_struct;

1
include/linux/dmaengine.h
View file

@ -23,6 +23,7 @@
#include <linux/device.h>
#include <linux/uio.h>
#include <linux/bug.h>
#include <linux/scatterlist.h>
#include <linux/bitmap.h>
#include <asm/page.h>

1
include/linux/elfcore.h
View file

@ -6,6 +6,7 @@
#include <linux/time.h>
#ifdef __KERNEL__
#include <linux/user.h>
#include <linux/bug.h>
#endif
#include <linux/ptrace.h>
#include <linux/elf.h>

1
include/linux/ext3_fs.h
View file

@ -18,6 +18,7 @@
#include <linux/types.h>
#include <linux/magic.h>
#include <linux/bug.h>
/*
* The second extended filesystem constants/structures

1
include/linux/fs.h
View file

@ -389,6 +389,7 @@ struct inodes_stat_t {
#include <linux/prio_tree.h>
#include <linux/init.h>
#include <linux/pid.h>
#include <linux/bug.h>
#include <linux/mutex.h>
#include <linux/capability.h>
#include <linux/semaphore.h>

1
include/linux/fsnotify.h
View file

@ -14,6 +14,7 @@
#include <linux/fsnotify_backend.h>
#include <linux/audit.h>
#include <linux/slab.h>
#include <linux/bug.h>
/*
* fsnotify_d_instantiate - instantiate a dentry for inode

1
include/linux/gpio.h
View file

@ -34,6 +34,7 @@ struct gpio {
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/bug.h>
struct device;
struct gpio_chip;

1
include/linux/highmem.h
View file

@ -3,6 +3,7 @@
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/mm.h>
#include <linux/uaccess.h>
#include <linux/hardirq.h>

1
include/linux/i2o.h
View file

@ -24,6 +24,7 @@
#define I2O_MAX_DRIVERS 8
#include <linux/pci.h>
#include <linux/bug.h>
#include <linux/dma-mapping.h>
#include <linux/string.h>
#include <linux/slab.h>

1
include/linux/if_vlan.h
View file

@ -17,6 +17,7 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <linux/bug.h>
#define VLAN_HLEN 4 /* The additional bytes required by VLAN
* (in addition to the Ethernet header)

1
include/linux/io-mapping.h
View file

@ -20,6 +20,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/bug.h>
#include <asm/io.h>
#include <asm/page.h>

62
include/linux/kernel.h
View file

@ -20,7 +20,6 @@
#include <linux/printk.h>
#include <linux/dynamic_debug.h>
#include <asm/byteorder.h>
#include <asm/bug.h>
#define USHRT_MAX ((u16)(~0U))
#define SHRT_MAX ((s16)(USHRT_MAX>>1))
@ -677,67 +676,6 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#ifdef __CHECKER__
#define BUILD_BUG_ON_NOT_POWER_OF_2(n)
#define BUILD_BUG_ON_ZERO(e) (0)
#define BUILD_BUG_ON_NULL(e) ((void*)0)
#define BUILD_BUG_ON(condition)
#define BUILD_BUG() (0)
#else /* __CHECKER__ */
/* Force a compilation error if a constant expression is not a power of 2 */
#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \
BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
/* Force a compilation error if condition is true, but also produce a
result (of value 0 and type size_t), so the expression can be used
e.g. in a structure initializer (or where-ever else comma expressions
aren't permitted). */
#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
/**
* BUILD_BUG_ON - break compile if a condition is true.
* @condition: the condition which the compiler should know is false.
*
* If you have some code which relies on certain constants being equal, or
* other compile-time-evaluated condition, you should use BUILD_BUG_ON to
* detect if someone changes it.
*
* The implementation uses gcc's reluctance to create a negative array, but
* gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
* to inline functions). So as a fallback we use the optimizer; if it can't
* prove the condition is false, it will cause a link error on the undefined
* "__build_bug_on_failed". This error message can be harder to track down
* though, hence the two different methods.
*/
#ifndef __OPTIMIZE__
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
#else
extern int __build_bug_on_failed;
#define BUILD_BUG_ON(condition) \
do { \
((void)sizeof(char[1 - 2*!!(condition)])); \
if (condition) __build_bug_on_failed = 1; \
} while(0)
#endif
/**
* BUILD_BUG - break compile if used.
*
* If you have some code that you expect the compiler to eliminate at
* build time, you should use BUILD_BUG to detect if it is
* unexpectedly used.
*/
#define BUILD_BUG() \
do { \
extern void __build_bug_failed(void) \
__linktime_error("BUILD_BUG failed"); \
__build_bug_failed(); \
} while (0)
#endif /* __CHECKER__ */
/* Trap pasters of __FUNCTION__ at compile-time */
#define __FUNCTION__ (__func__)

1
include/linux/kprobes.h
View file

@ -33,6 +33,7 @@
#include <linux/list.h>
#include <linux/notifier.h>
#include <linux/smp.h>
#include <linux/bug.h>
#include <linux/percpu.h>
#include <linux/spinlock.h>
#include <linux/rcupdate.h>

1
include/linux/kvm_host.h
View file

@ -13,6 +13,7 @@
#include <linux/spinlock.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/bug.h>
#include <linux/mm.h>
#include <linux/mmu_notifier.h>
#include <linux/preempt.h>

1
include/linux/memory_hotplug.h
View file

@ -4,6 +4,7 @@
#include <linux/mmzone.h>
#include <linux/spinlock.h>
#include <linux/notifier.h>
#include <linux/bug.h>
struct page;
struct zone;

1
include/linux/mm.h
View file

@ -6,6 +6,7 @@
#ifdef __KERNEL__
#include <linux/gfp.h>
#include <linux/bug.h>
#include <linux/list.h>
#include <linux/mmzone.h>
#include <linux/rbtree.h>

1
include/linux/mtd/cfi.h
View file

@ -22,6 +22,7 @@
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/bug.h>
#include <linux/interrupt.h>
#include <linux/mtd/flashchip.h>
#include <linux/mtd/map.h>

1
include/linux/netdevice.h
View file

@ -33,6 +33,7 @@
#ifdef __KERNEL__
#include <linux/pm_qos.h>
#include <linux/timer.h>
#include <linux/bug.h>
#include <linux/delay.h>
#include <linux/atomic.h>
#include <asm/cache.h>

1
include/linux/nilfs2_fs.h
View file

@ -41,6 +41,7 @@
#include <linux/types.h>
#include <linux/ioctl.h>
#include <linux/magic.h>
#include <linux/bug.h>
#define NILFS_INODE_BMAP_SIZE 7

1
include/linux/page-flags.h
View file

@ -6,6 +6,7 @@
#define PAGE_FLAGS_H
#include <linux/types.h>
#include <linux/bug.h>
#ifndef __GENERATING_BOUNDS_H
#include <linux/mm_types.h>
#include <generated/bounds.h>

1
include/linux/pid_namespace.h
View file

@ -2,6 +2,7 @@
#define _LINUX_PID_NS_H
#include <linux/sched.h>
#include <linux/bug.h>
#include <linux/mm.h>
#include <linux/threads.h>
#include <linux/nsproxy.h>

1
include/linux/posix_acl.h
View file

@ -8,6 +8,7 @@
#ifndef __LINUX_POSIX_ACL_H
#define __LINUX_POSIX_ACL_H
#include <linux/bug.h>
#include <linux/slab.h>
#include <linux/rcupdate.h>

1
include/linux/ptrace.h
View file

@ -108,6 +108,7 @@
#include <linux/compiler.h> /* For unlikely. */
#include <linux/sched.h> /* For struct task_struct. */
#include <linux/err.h> /* for IS_ERR_VALUE */
#include <linux/bug.h> /* For BUG_ON. */
extern long arch_ptrace(struct task_struct *child, long request,

1
include/linux/radix-tree.h
View file

@ -22,6 +22,7 @@
#include <linux/preempt.h>
#include <linux/types.h>
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/rcupdate.h>

1
include/linux/rcupdate.h
View file

@ -42,6 +42,7 @@
#include <linux/lockdep.h>
#include <linux/completion.h>
#include <linux/debugobjects.h>
#include <linux/bug.h>
#include <linux/compiler.h>
#ifdef CONFIG_RCU_TORTURE_TEST

1
include/linux/regset.h
View file

@ -15,6 +15,7 @@
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/bug.h>
#include <linux/uaccess.h>
struct task_struct;
struct user_regset;

1
include/linux/relay.h
View file

@ -15,6 +15,7 @@
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/fs.h>
#include <linux/poll.h>
#include <linux/kref.h>

6
include/linux/scatterlist.h
View file

@ -1,10 +1,12 @@
#ifndef _LINUX_SCATTERLIST_H
#define _LINUX_SCATTERLIST_H
#include <linux/string.h>
#include <linux/bug.h>
#include <linux/mm.h>
#include <asm/types.h>
#include <asm/scatterlist.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <asm/io.h>
struct sg_table {

1
include/linux/seq_file.h
View file

@ -3,6 +3,7 @@
#include <linux/types.h>
#include <linux/string.h>
#include <linux/bug.h>
#include <linux/mutex.h>
#include <linux/cpumask.h>
#include <linux/nodemask.h>

1
include/linux/skbuff.h
View file

@ -18,6 +18,7 @@
#include <linux/kmemcheck.h>
#include <linux/compiler.h>
#include <linux/time.h>
#include <linux/bug.h>
#include <linux/cache.h>
#include <linux/atomic.h>

1
include/linux/slub_def.h
View file

@ -8,6 +8,7 @@
*/
#include <linux/types.h>
#include <linux/gfp.h>
#include <linux/bug.h>
#include <linux/workqueue.h>
#include <linux/kobject.h>

5
include/linux/spinlock.h
View file

@ -375,10 +375,7 @@ static inline int spin_can_lock(spinlock_t *lock)
return raw_spin_can_lock(&lock->rlock);
}
static inline void assert_spin_locked(spinlock_t *lock)
{
assert_raw_spin_locked(&lock->rlock);
}
#define assert_spin_locked(lock) assert_raw_spin_locked(&(lock)->rlock)
/*
* Pull the atomic_t declaration:

1
include/linux/ssb/ssb_driver_gige.h
View file

@ -2,6 +2,7 @@
#define LINUX_SSB_DRIVER_GIGE_H_
#include <linux/ssb/ssb.h>
#include <linux/bug.h>
#include <linux/pci.h>
#include <linux/spinlock.h>

1
include/linux/swapops.h
View file

@ -2,6 +2,7 @@
#define _LINUX_SWAPOPS_H
#include <linux/radix-tree.h>
#include <linux/bug.h>
/*
* swapcache pages are stored in the swapper_space radix tree. We want to

1
include/linux/syscalls.h
View file

@ -68,6 +68,7 @@ struct file_handle;
#include <linux/aio_abi.h>
#include <linux/capability.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/sem.h>
#include <asm/siginfo.h>
#include <asm/signal.h>

1
include/linux/transport_class.h
View file

@ -10,6 +10,7 @@
#define _TRANSPORT_CLASS_H_
#include <linux/device.h>
#include <linux/bug.h>
#include <linux/attribute_container.h>
struct transport_container;

1
include/linux/virtio_config.h
View file

@ -53,6 +53,7 @@
#ifdef __KERNEL__
#include <linux/err.h>
#include <linux/bug.h>
#include <linux/virtio.h>
/**

1
include/net/cfg80211.h
View file

@ -13,6 +13,7 @@
#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/nl80211.h>

1
include/net/dst.h
View file

@ -12,6 +12,7 @@
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
#include <linux/rcupdate.h>
#include <linux/bug.h>
#include <linux/jiffies.h>
#include <net/neighbour.h>
#include <asm/processor.h>

1
include/net/ip_vs.h
View file

@ -16,6 +16,7 @@
#include <linux/atomic.h> /* for struct atomic_t */
#include <linux/compiler.h>
#include <linux/timer.h>
#include <linux/bug.h>
#include <net/checksum.h>
#include <linux/netfilter.h> /* for union nf_inet_addr */

1
include/net/mac80211.h
View file

@ -13,6 +13,7 @@
#ifndef MAC80211_H
#define MAC80211_H
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/if_ether.h>
#include <linux/skbuff.h>

1
include/net/netns/generic.h
View file

@ -5,6 +5,7 @@
#ifndef __NET_GENERIC_H__
#define __NET_GENERIC_H__
#include <linux/bug.h>
#include <linux/rcupdate.h>
/*

1
include/net/red.h
View file

@ -2,6 +2,7 @@
#define __NET_SCHED_RED_H
#include <linux/types.h>
#include <linux/bug.h>
#include <net/pkt_sched.h>
#include <net/inet_ecn.h>
#include <net/dsfield.h>

1
include/net/tcp.h
View file

@ -22,6 +22,7 @@
#include <linux/list.h>
#include <linux/tcp.h>
#include <linux/bug.h>
#include <linux/slab.h>
#include <linux/cache.h>
#include <linux/percpu.h>

1
include/net/timewait_sock.h
View file

@ -12,6 +12,7 @@
#define _TIMEWAIT_SOCK_H
#include <linux/slab.h>
#include <linux/bug.h>
#include <net/sock.h>
struct timewait_sock_ops {

1
include/net/udp.h
View file

@ -23,6 +23,7 @@
#define _UDP_H
#include <linux/list.h>
#include <linux/bug.h>
#include <net/inet_sock.h>
#include <net/sock.h>
#include <net/snmp.h>

1
include/net/wpan-phy.h
View file

@ -23,6 +23,7 @@
#include <linux/netdevice.h>
#include <linux/mutex.h>
#include <linux/bug.h>
struct wpan_phy {
struct mutex pib_lock;

1
include/scsi/osd_ore.h
View file

@ -26,6 +26,7 @@
#include <scsi/osd_attributes.h>
#include <scsi/osd_sec.h>
#include <linux/pnfs_osd_xdr.h>
#include <linux/bug.h>
struct ore_comp {
struct osd_obj_id obj;

1
include/scsi/scsi_transport.h
View file

@ -22,6 +22,7 @@
#include <linux/transport_class.h>
#include <linux/blkdev.h>
#include <linux/bug.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>

1
lib/atomic64_test.c
View file

@ -9,6 +9,7 @@
* (at your option) any later version.
*/
#include <linux/init.h>
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/atomic.h>

1
lib/average.c
View file

@ -7,6 +7,7 @@
#include <linux/module.h>
#include <linux/average.h>
#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/log2.h>

1
lib/bitmap.c
View file

@ -10,6 +10,7 @@
#include <linux/errno.h>
#include <linux/bitmap.h>
#include <linux/bitops.h>
#include <linux/bug.h>
#include <asm/uaccess.h>
/*

1
lib/iommu-helper.c
View file

@ -4,6 +4,7 @@
#include <linux/module.h>
#include <linux/bitmap.h>
#include <linux/bug.h>
int iommu_is_span_boundary(unsigned int index, unsigned int nr,
unsigned long shift,

2
lib/list_debug.c
View file

@ -8,6 +8,8 @@
#include <linux/module.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/kernel.h>
/*
* Insert a new entry between two known consecutive entries.

1
lib/plist.c
View file

@ -23,6 +23,7 @@
* information.
*/
#include <linux/bug.h>
#include <linux/plist.h>
#include <linux/spinlock.h>

1
lib/string.c
View file

@ -22,6 +22,7 @@
#include <linux/types.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/bug.h>
#include <linux/module.h>
#ifndef __HAVE_ARCH_STRNICMP

1
lib/timerqueue.c
View file

@ -22,6 +22,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/bug.h>
#include <linux/timerqueue.h>
#include <linux/rbtree.h>
#include <linux/module.h>