From: Akinobu Mita <akinobu.mita@gmail.com> To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.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 v3 21/22] m68k: remove inline asm from minix_find_first_zero_bit Date: Tue, 23 Nov 2010 22:38:23 +0900 [thread overview] Message-ID: <1290519504-3958-22-git-send-email-akinobu.mita@gmail.com> (raw) In-Reply-To: <1290519504-3958-1-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 --- No change from previous 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)) -- 1.7.3.2
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, 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 v3 21/22] m68k: remove inline asm from minix_find_first_zero_bit Date: Tue, 23 Nov 2010 22:38:23 +0900 [thread overview] Message-ID: <1290519504-3958-22-git-send-email-akinobu.mita@gmail.com> (raw) In-Reply-To: <1290519504-3958-1-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 --- No change from previous 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)) -- 1.7.3.2
next prev parent reply other threads:[~2010-11-23 13:40 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-11-23 13:38 [PATCH v3 00/22] Introduce little endian bitops Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 01/22] bitops: merge little and big endian definisions in asm-generic/bitops/le.h Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 02/22] bitops: rename generic little-endian bitops functions Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 03/22] s390: introduce little-endian bitops Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 04/22] arm: " Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 05/22] m68k: " Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 06/22] m68knommu: " Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-25 8:46 ` Akinobu Mita 2010-11-25 8:46 ` Akinobu Mita 2010-11-25 8:46 ` Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 07/22] bitops: introduce little-endian bitops for most architectures Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 08/22] rds: stop including asm-generic/bitops/le.h Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 09/22] kvm: " Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 10/22] asm-generic: use little-endian bitops Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 11/22] ext3: " Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 12/22] ext4: " Akinobu Mita 2010-11-23 19:29 ` Ted Ts'o 2010-11-23 13:38 ` [PATCH v3 13/22] ocfs2: " Akinobu Mita 2010-11-23 13:40 ` [Ocfs2-devel] " Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 14/22] nilfs2: " Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 15/22] reiserfs: " Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 16/22] udf: " Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 17/22] ufs: " Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 18/22] md: use little-endian bit operations Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 19/22] dm: " Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 20/22] bitops: remove ext2 non-atomic bitops from asm/bitops.h Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita [this message] 2010-11-23 13:38 ` [PATCH v3 21/22] m68k: remove inline asm from minix_find_first_zero_bit Akinobu Mita 2010-11-23 13:38 ` [PATCH v3 22/22] bitops: remove minix bitops from asm/bitops.h Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-23 13:38 ` Akinobu Mita 2010-11-24 5:55 ` Paul Mundt 2010-11-24 5:55 ` Paul Mundt 2010-11-24 5:55 ` Paul Mundt 2010-11-24 5:55 ` Paul Mundt 2010-11-24 12:54 ` Ralf Baechle 2010-11-23 13:38 ` Akinobu Mita
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