powerpc/spufs: simplify spufs core dumping

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Replace the coredump ->read method with a ->dump method that must call
dump_emit itself.  That way we avoid a buffer allocation an messing with
set_fs() to call into code that is intended to deal with user buffers.
For the ->get case we can now use a small on-stack buffer and avoid
memory allocations as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Christoph Hellwig 2020-05-05 12:12:52 +02:00 • committed by Al Viro

parent 6904d3d0cb

commit 5456ffdee6

3 changed files with 117 additions and 176 deletions

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79

arch/powerpc/platforms/cell/spufs/coredump.c

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203

arch/powerpc/platforms/cell/spufs/file.c

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3

arch/powerpc/platforms/cell/spufs/spufs.h

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