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Message-Id: <1290788919-5057-3-git-send-email-akinobu.mita@gmail.com> Date: Sat, 27 Nov 2010 01:28:39 +0900 From: Akinobu Mita <akinobu.mita@...il.com> To: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org> Cc: Akinobu Mita <akinobu.mita@...il.com>, Greg Ungerer <gerg@...inux.org>, Arnd Bergmann <arnd@...db.de> Subject: [PATCH 2/2] bitops: introduce CONFIG_GENERIC_FIND_LE_BIT The little-endian bitops patch series broke the build on m68knommu. lib/find_next_bit.c:190: error: conflicting types for 'find_next_zero_le_bit' /home/mita/scm/linux-2.6/arch/m68k/include/asm/bitops_no.h:286: error: previous definition of 'find_next_zero_le_bit' was here Because m68knommu selects CONFIG_GENERIC_FIND_NEXT_BIT, it redefines find_next_zero_le_bit() in lib/find_next_bit.c. This introduces CONFIG_GENERIC_FIND_NEXT_BIT to tell whether to use generic implementation of find_*_le_bit() in lib/find_next_bit.c or not. It will not be selected by m68knommu to fix build failure. Signed-off-by: Akinobu Mita <akinobu.mita@...il.com> Cc: Greg Ungerer <gerg@...inux.org> Cc: Arnd Bergmann <arnd@...db.de> --- arch/frv/Kconfig | 4 ++++ arch/h8300/Kconfig | 4 ++++ arch/m32r/Kconfig | 4 ++++ arch/microblaze/Kconfig | 3 +++ arch/mips/Kconfig | 4 ++++ arch/parisc/Kconfig | 4 ++++ arch/powerpc/Kconfig | 4 ++++ arch/sh/Kconfig | 3 +++ arch/sparc/Kconfig | 4 ++++ arch/xtensa/Kconfig | 3 +++ lib/Kconfig | 3 +++ lib/Makefile | 1 + lib/find_next_bit.c | 3 +++ 13 files changed, 44 insertions(+), 0 deletions(-) diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index f6bcb03..77deacd 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -21,6 +21,10 @@ config GENERIC_FIND_NEXT_BIT bool default y +config GENERIC_FIND_LE_BIT + bool + default y + config GENERIC_HWEIGHT bool default y diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 65f897d8..02de073 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -43,6 +43,10 @@ config GENERIC_FIND_NEXT_BIT bool default y +config GENERIC_FIND_LE_BIT + bool + default y + config GENERIC_HWEIGHT bool default y diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index 5c291d6..df2e01a 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -265,6 +265,10 @@ config GENERIC_FIND_NEXT_BIT bool default y +config GENERIC_FIND_LE_BIT + bool + default y + config GENERIC_HWEIGHT bool default y diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 387d5ff..5f29d63 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -34,6 +34,9 @@ config ARCH_HAS_ILOG2_U64 config GENERIC_FIND_NEXT_BIT def_bool y +config GENERIC_FIND_LE_BIT + def_bool y + config GENERIC_HWEIGHT def_bool y diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 67a2fa2..0ca01a2 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -753,6 +753,10 @@ config GENERIC_FIND_NEXT_BIT bool default y +config GENERIC_FIND_LE_BIT + bool + default y + config GENERIC_HWEIGHT bool default y diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 0888675..ca59250 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -48,6 +48,10 @@ config GENERIC_FIND_NEXT_BIT bool default y +config GENERIC_FIND_LE_BIT + bool + default y + config GENERIC_BUG bool default y diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index e625e9e..ac44ad9 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -104,6 +104,10 @@ config GENERIC_FIND_NEXT_BIT bool default y +config GENERIC_FIND_LE_BIT + bool + default y + config GENERIC_GPIO bool help diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 7f217b3..0438776 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -72,6 +72,9 @@ config GENERIC_CSUM config GENERIC_FIND_NEXT_BIT def_bool y +config GENERIC_FIND_LE_BIT + def_bool y + config GENERIC_HWEIGHT def_bool y diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 45d9c87..af40adf 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -194,6 +194,10 @@ config GENERIC_FIND_NEXT_BIT bool default y +config GENERIC_FIND_LE_BIT + bool + default y + config GENERIC_HWEIGHT bool default y if !ULTRA_HAS_POPULATION_COUNT diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index d373d15..d20d434 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -21,6 +21,9 @@ config RWSEM_XCHGADD_ALGORITHM config GENERIC_FIND_NEXT_BIT def_bool y +config GENERIC_FIND_LE_BIT + def_bool y + config GENERIC_HWEIGHT def_bool y diff --git a/lib/Kconfig b/lib/Kconfig index fa9bf2c..2e5df8e 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -22,6 +22,9 @@ config GENERIC_FIND_FIRST_BIT config GENERIC_FIND_NEXT_BIT bool +config GENERIC_FIND_LE_BIT + bool + config GENERIC_FIND_LAST_BIT bool default y diff --git a/lib/Makefile b/lib/Makefile index e6a3763..a3265d6 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -38,6 +38,7 @@ lib-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o lib-$(CONFIG_GENERIC_FIND_FIRST_BIT) += find_next_bit.o lib-$(CONFIG_GENERIC_FIND_NEXT_BIT) += find_next_bit.o +lib-$(CONFIG_GENERIC_FIND_LE_BIT) += find_next_bit.o obj-$(CONFIG_GENERIC_FIND_LAST_BIT) += find_last_bit.o CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS)) diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c index eb8934b..b7047d1 100644 --- a/lib/find_next_bit.c +++ b/lib/find_next_bit.c @@ -160,6 +160,7 @@ EXPORT_SYMBOL(find_first_zero_bit); #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ #ifdef __BIG_ENDIAN +#ifdef CONFIG_GENERIC_FIND_LE_BIT /* include/linux/byteorder does not support "unsigned long" type */ static inline unsigned long ext2_swabp(const unsigned long * x) @@ -271,4 +272,6 @@ found_middle_swap: return result + __ffs(ext2_swab(tmp)); } EXPORT_SYMBOL(find_next_le_bit); + +#endif /* CONFIG_GENERIC_FIND_LE_BIT */ #endif /* __BIG_ENDIAN */ -- 1.7.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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