kernel/arch/frv/include/asm/bitops.h, branch linux-rolling-stable

arch: remove frv port

2018-03-09T22:19:58Z

The Fujitsu FRV kernel port has been around for a long time, but has not seen regular updates in several years and instead was marked 'Orphaned' in 2016 by long-time maintainer David Howells. The SoC product line apparently is apparently still around in the form of the Socionext Milbeaut image processor, but this one no longer uses the FRV CPU cores. This removes all FRV specific files from the kernel. Link: http://www.socionext.com/en/products/assp/milbeaut/ Cc: David Howells Signed-off-by: Arnd Bergmann

frv: Rewrite atomic implementation

2015-07-27T12:06:23Z

Mostly complete rewrite of the FRV atomic implementation, instead of using assembly files, use inline assembler. The out-of-line CONFIG option makes a bit of a mess of things, but a little CPP trickery gets that done too. FRV already had the atomic logic ops but under a non standard name, the reimplementation provides the generic names and provides the intermediate form required for the bitops implementation. The slightly inconsistent __atomic32_fetch_##op naming is because __atomic_fetch_##op conlicts with GCC builtin functions. The 64bit atomic ops use the inline assembly %Ln construct to access the low word register (r+1), afaik this construct was not previously used in the kernel and is completely undocumented, but I found it in the FRV GCC code and it seems to work. FRV had a non-standard definition of atomic_{clear,set}_mask() which would work types other than atomic_t, the one user relying on that (arch/frv/kernel/dma.c) got converted to use the new intermediate form. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Thomas Gleixner

arch,frv: Convert smp_mb__*()

2014-04-18T12:20:34Z

Because: arch/frv/include/asm/smp.h:#error SMP not supported smp_mb() is barrier() and we can use the default implementation that uses smp_mb(). Signed-off-by: Peter Zijlstra Acked-by: Paul E. McKenney Link: http://lkml.kernel.org/n/tip-n296g51yzdu5ru1vp7mccxmf@git.kernel.org Cc: David Howells Cc: Linus Torvalds Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

asm-generic: add another generic ext2 atomic bitops

2011-07-26T23:49:46Z

The majority of architectures implement ext2 atomic bitops as test_and_{set,clear}_bit() without spinlock. This adds this type of generic implementation in ext2-atomic-setbit.h and use it wherever possible. Signed-off-by: Akinobu Mita Suggested-by: Andreas Dilger Suggested-by: Arnd Bergmann Acked-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bitops: remove minix bitops from asm/bitops.h

2011-03-24T02:46:22Z

minix bit operations are only used by minix filesystem and useless by other modules. Because byte order of inode and block bitmaps is different on each architecture like below: m68k: big-endian 16bit indexed bitmaps h8300, microblaze, s390, sparc, m68knommu: big-endian 32 or 64bit indexed bitmaps m32r, mips, sh, xtensa: big-endian 32 or 64bit indexed bitmaps for big-endian mode little-endian bitmaps for little-endian mode Others: little-endian bitmaps In order to move minix bit operations from asm/bitops.h to architecture independent code in minix filesystem, this provides two config options. CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED is only selected by m68k. CONFIG_MINIX_FS_NATIVE_ENDIAN is selected by the architectures which use native byte order bitmaps (h8300, microblaze, s390, sparc, m68knommu, m32r, mips, sh, xtensa). The architectures which always use little-endian bitmaps do not select these options. Finally, we can remove minix bit operations from asm/bitops.h for all architectures. Signed-off-by: Akinobu Mita Acked-by: Arnd Bergmann Acked-by: Greg Ungerer Cc: Geert Uytterhoeven Cc: Roman Zippel Cc: Andreas Schwab Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Yoshinori Sato Cc: Michal Simek Cc: "David S. Miller" Cc: Hirokazu Takata Acked-by: Ralf Baechle Acked-by: Paul Mundt Cc: Chris Zankel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bitops: remove ext2 non-atomic bitops from asm/bitops.h

2011-03-24T02:46:21Z

As the result of conversions, there are no users of ext2 non-atomic bit operations except for ext2 filesystem itself. Now we can put them into architecture independent code in ext2 filesystem, and remove from asm/bitops.h for all architectures. Signed-off-by: Akinobu Mita Cc: Jan Kara Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bitops: introduce little-endian bitops for most architectures

2011-03-24T02:46:15Z

Introduce little-endian bit operations to the big-endian architectures which do not have native little-endian bit operations and the little-endian architectures. (alpha, avr32, blackfin, cris, frv, h8300, ia64, m32r, mips, mn10300, parisc, sh, sparc, tile, x86, xtensa) These architectures can just include generic implementation (asm-generic/bitops/le.h). Signed-off-by: Akinobu Mita Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Mikael Starvik Cc: David Howells Cc: Yoshinori Sato Cc: "Luck, Tony" Cc: Ralf Baechle Cc: Kyle McMartin Cc: Matthew Wilcox Cc: Grant Grundler Cc: Paul Mundt Cc: Kazumoto Kojima Cc: Hirokazu Takata Cc: "David S. Miller" Cc: Chris Zankel Cc: Ingo Molnar Cc: Thomas Gleixner Acked-by: Hans-Christian Egtvedt Acked-by: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

FRV: bitops: Change the bitmap index from int to unsigned long

2009-06-11T16:01:26Z

Change the index to unsigned long in all bitops for [frv] Signed-off-by: Justin Chen Reviewed-by: Bjorn Helgaas Signed-off-by: David Howells Signed-off-by: Linus Torvalds

FRV: Move to arch/frv/include/asm/

2009-04-10T00:48:06Z

Move arch headers from include/asm-frv/ to arch/frv/include/asm/. Signed-off-by: David Howells