From: Akinobu Mita <akinobu.mita@gmail.com> To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>, Christoph Hellwig <hch@infradead.org>, Andrew Morton <akpm@linux-foundation.org> Cc: Akinobu Mita <akinobu.mita@gmail.com>, Geert Uytterhoeven <geert@linux-m68k.org>, Roman Zippel <zippel@linux-m68k.org>, Andreas Schwab <schwab@linux-m68k.org>, linux-m68k@vger.kernel.org Subject: [PATCH v2 21/22] m68k: remove inline asm from minix_find_first_zero_bit Date: Thu, 21 Oct 2010 23:41:16 +0900 [thread overview] Message-ID: <1287672077-5797-22-git-send-email-akinobu.mita@gmail.com> (raw) In-Reply-To: <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com> As a preparation for moving minix bit operations from asm/bitops.h to architecture independent code in minix file system, this removes inline asm from minix_find_first_zero_bit() for m68k. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: linux-m68k@lists.linux-m68k.org --- First submission arch/m68k/include/asm/bitops_mm.h | 10 +++------- 1 files changed, 3 insertions(+), 7 deletions(-) diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h index 831d626..f31ed5a 100644 --- a/arch/m68k/include/asm/bitops_mm.h +++ b/arch/m68k/include/asm/bitops_mm.h @@ -330,23 +330,19 @@ static inline int __fls(int x) static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size) { const unsigned short *p = vaddr, *addr = vaddr; - int res; unsigned short num; if (!size) return 0; size = (size >> 4) + ((size & 15) > 0); - while (*p++ == 0xffff) - { + while (*p++ == 0xffff) { if (--size == 0) return (p - addr) << 4; } - num = ~*--p; - __asm__ __volatile__ ("bfffo %1{#16,#16},%0" - : "=d" (res) : "d" (num & -num)); - return ((p - addr) << 4) + (res ^ 31); + num = *--p; + return ((p - addr) << 4) + ffz(num); } #define minix_test_and_set_bit(nr, addr) __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr)) -- 1.7.1.231.gd0b16
WARNING: multiple messages have this Message-ID (diff)
From: Akinobu Mita <akinobu.mita@gmail.com> To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>, Christoph Hellwig <hch@infradead.org>, Andrew Morton <akpm@linux-foundation.org> Cc: Akinobu Mita <akinobu.mita@gmail.com>, Geert Uytterhoeven <geert@linux-m68k.org>, Roman Zippel <zippel@linux-m68k.org>, Andreas Schwab <schwab@linux-m68k.org>, linux-m68k@lists.linux-m68k.org Subject: [PATCH v2 21/22] m68k: remove inline asm from minix_find_first_zero_bit Date: Thu, 21 Oct 2010 23:41:16 +0900 [thread overview] Message-ID: <1287672077-5797-22-git-send-email-akinobu.mita@gmail.com> (raw) In-Reply-To: <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com> As a preparation for moving minix bit operations from asm/bitops.h to architecture independent code in minix file system, this removes inline asm from minix_find_first_zero_bit() for m68k. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: linux-m68k@lists.linux-m68k.org --- First submission arch/m68k/include/asm/bitops_mm.h | 10 +++------- 1 files changed, 3 insertions(+), 7 deletions(-) diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h index 831d626..f31ed5a 100644 --- a/arch/m68k/include/asm/bitops_mm.h +++ b/arch/m68k/include/asm/bitops_mm.h @@ -330,23 +330,19 @@ static inline int __fls(int x) static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size) { const unsigned short *p = vaddr, *addr = vaddr; - int res; unsigned short num; if (!size) return 0; size = (size >> 4) + ((size & 15) > 0); - while (*p++ == 0xffff) - { + while (*p++ == 0xffff) { if (--size == 0) return (p - addr) << 4; } - num = ~*--p; - __asm__ __volatile__ ("bfffo %1{#16,#16},%0" - : "=d" (res) : "d" (num & -num)); - return ((p - addr) << 4) + (res ^ 31); + num = *--p; + return ((p - addr) << 4) + ffz(num); } #define minix_test_and_set_bit(nr, addr) __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr)) -- 1.7.1.231.gd0b16
next prev parent reply other threads:[~2010-10-21 14:45 UTC|newest] Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com> 2010-10-21 14:40 ` [PATCH v2 01/22] bitops: merge little and big endian definisions in asm-generic/bitops/le.h Akinobu Mita 2010-10-21 15:06 ` Arnd Bergmann 2010-10-21 14:40 ` [PATCH v2 02/22] bitops: rename generic little-endian bitops functions Akinobu Mita 2010-10-21 14:40 ` Akinobu Mita 2010-10-21 14:40 ` Akinobu Mita 2010-10-21 15:07 ` Arnd Bergmann 2010-10-21 15:07 ` Arnd Bergmann 2010-10-21 15:07 ` Arnd Bergmann 2010-10-21 15:07 ` Arnd Bergmann 2010-10-31 14:02 ` Hans-Christian Egtvedt 2010-10-31 14:02 ` Hans-Christian Egtvedt 2010-10-21 14:40 ` Akinobu Mita 2010-10-21 14:40 ` [PATCH v2 03/22] s390: introduce little-endian bitops Akinobu Mita 2010-10-21 15:08 ` Arnd Bergmann 2010-10-21 14:40 ` [PATCH v2 04/22] arm: " Akinobu Mita 2010-10-21 14:40 ` Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 05/22] m68k: " Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 06/22] m68knommu: " Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-22 5:47 ` Greg Ungerer 2010-10-22 5:47 ` Greg Ungerer 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 07/22] bitops: introduce little-endian bitops for most architectures Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 08/22] rds: stop including asm-generic/bitops/le.h Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 09/22] kvm: " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 10/22] asm-generic: use little-endian bitops Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 11/22] ext3: " Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 12/22] ext4: " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 13/22] ocfs2: " Akinobu Mita 2010-10-21 14:41 ` [Ocfs2-devel] " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 14/22] nilfs2: " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 15/22] reiserfs: " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 16/22] udf: " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 17/22] ufs: " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 18/22] md: use little-endian bit operations Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 19/22] dm: " Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 20/22] bitops: remove ext2 non-atomic bitops from asm/bitops.h Akinobu Mita 2010-10-21 17:52 ` Andreas Dilger 2010-10-22 7:56 ` Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 21/22] m68k: remove inline asm from minix_find_first_zero_bit Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita [this message] 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` [PATCH v2 22/22] bitops: remove minix bitops from asm/bitops.h Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 14:41 ` Akinobu Mita 2010-10-21 15:10 ` Arnd Bergmann 2010-10-21 15:10 ` Arnd Bergmann 2010-10-21 15:10 ` Arnd Bergmann 2010-10-21 15:10 ` Arnd Bergmann 2010-10-21 15:10 ` Arnd Bergmann 2010-10-21 23:19 ` Michal Simek 2010-10-21 23:19 ` Michal Simek 2010-10-21 23:19 ` Michal Simek 2010-10-22 7:55 ` Akinobu Mita 2010-10-22 7:55 ` Akinobu Mita 2010-10-22 7:55 ` Akinobu Mita 2010-10-22 7:55 ` Akinobu Mita 2010-10-22 7:55 ` Akinobu Mita 2010-10-24 23:31 ` [microblaze-uclinux] " Michal Simek 2010-10-25 13:31 ` Arnd Bergmann 2010-10-21 23:19 ` Michal Simek 2010-10-22 5:40 ` Greg Ungerer 2010-10-22 5:40 ` Greg Ungerer 2010-10-22 5:40 ` Greg Ungerer 2010-10-22 5:40 ` Greg Ungerer 2010-10-22 5:40 ` Greg Ungerer 2010-10-21 14:41 ` Akinobu Mita
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