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authorDavid Brown <davidb@codeaurora.org>2011-03-17 01:13:16 -0400
committerDavid Brown <davidb@codeaurora.org>2011-03-17 01:13:16 -0400
commit92c260f755c42337c550d8ac1f8ccd1b32bffb20 (patch)
tree6d04fefc1adeecabfb2b00c201e0db78fa2b5529 /include/linux/kernel.h
parent8e76a80960bf06c245160a484d5a363ca6b520bb (diff)
parent05e34754518b6a90d5c392790c032575fab12d66 (diff)
Merge remote branch 'rmk/for-linus' into for-linus
* rmk/for-linus: (1557 commits) ARM: 6806/1: irq: introduce entry and exit functions for chained handlers ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas ARM: 6747/1: P2V: Thumb2 support ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9 ARM: 6772/1: errata: possible fault MMU translations following an ASID switch ARM: 6776/1: mach-ux500: activate fix for errata 753970 ARM: 6794/1: SPEAr: Append UL to device address macros. ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files. ARM: 6681/1: SPEAr: add debugfs support to clk API ARM: 6703/1: SPEAr: update clk API support ARM: 6679/1: SPEAr: make clk API functions more generic ARM: 6737/1: SPEAr: formalized timer support ... Conflicts: arch/arm/mach-msm/board-msm7x27.c arch/arm/mach-msm/board-msm7x30.c arch/arm/mach-msm/board-qsd8x50.c arch/arm/mach-msm/board-sapphire.c arch/arm/mach-msm/include/mach/memory.h
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r--include/linux/kernel.h32
1 files changed, 26 insertions, 6 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d07d8057e440..2fe6e84894a4 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -575,12 +575,6 @@ struct sysinfo {
575 char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */ 575 char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
576}; 576};
577 577
578/* Force a compilation error if condition is true */
579#define BUILD_BUG_ON(condition) ((void)BUILD_BUG_ON_ZERO(condition))
580
581/* Force a compilation error if condition is constant and true */
582#define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
583
584/* Force a compilation error if a constant expression is not a power of 2 */ 578/* Force a compilation error if a constant expression is not a power of 2 */
585#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \ 579#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \
586 BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0)) 580 BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
@@ -592,6 +586,32 @@ struct sysinfo {
592#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) 586#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
593#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) 587#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
594 588
589/**
590 * BUILD_BUG_ON - break compile if a condition is true.
591 * @condition: the condition which the compiler should know is false.
592 *
593 * If you have some code which relies on certain constants being equal, or
594 * other compile-time-evaluated condition, you should use BUILD_BUG_ON to
595 * detect if someone changes it.
596 *
597 * The implementation uses gcc's reluctance to create a negative array, but
598 * gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
599 * to inline functions). So as a fallback we use the optimizer; if it can't
600 * prove the condition is false, it will cause a link error on the undefined
601 * "__build_bug_on_failed". This error message can be harder to track down
602 * though, hence the two different methods.
603 */
604#ifndef __OPTIMIZE__
605#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
606#else
607extern int __build_bug_on_failed;
608#define BUILD_BUG_ON(condition) \
609 do { \
610 ((void)sizeof(char[1 - 2*!!(condition)])); \
611 if (condition) __build_bug_on_failed = 1; \
612 } while(0)
613#endif
614
595/* Trap pasters of __FUNCTION__ at compile-time */ 615/* Trap pasters of __FUNCTION__ at compile-time */
596#define __FUNCTION__ (__func__) 616#define __FUNCTION__ (__func__)
597 617