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2017-09-13lib/test_bitmap.c: use ULL suffix for 64-bit constantsGeert Uytterhoeven1-4/+4
With gcc 4.1.2: lib/test_bitmap.c:189: warning: integer constant is too large for `long' type lib/test_bitmap.c:190: warning: integer constant is too large for `long' type lib/test_bitmap.c:194: warning: integer constant is too large for `long' type lib/test_bitmap.c:195: warning: integer constant is too large for `long' type Add the missing "ULL" suffix to fix this. Link: http://lkml.kernel.org/r/[email protected] Fixes: 60ef690018b262dd ("bitmap: introduce BITMAP_FROM_U64()") Signed-off-by: Geert Uytterhoeven <[email protected]> Acked-by: Yury Norov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-09-08bitmap: introduce BITMAP_FROM_U64()Yury Norov1-15/+32
The macro is the compile-time analogue of bitmap_from_u64() with the same purpose: convert the 64-bit number to the properly ordered pair of 32-bit parts, suitable for filling the bitmap in 32-bit BE environment. Use it to make test_bitmap_parselist() correct for 32-bit BE ABIs. Tested on BE mips/qemu. [[email protected]: tweak code comment] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Yury Norov <[email protected]> Cc: Noam Camus <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-09-08lib/test_bitmap.c: add test for bitmap_parselist()Yury Norov1-0/+74
Do some basic checks for bitmap_parselist(). [[email protected]: fix printk warning] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Yury Norov <[email protected]> Cc: Noam Camus <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-07-10bitmap: optimise bitmap_set and bitmap_clear of a single bitMatthew Wilcox1-3/+0
We have eight users calling bitmap_clear for a single bit and seventeen calling bitmap_set for a single bit. Rather than fix all of them to call __clear_bit or __set_bit, turn bitmap_clear and bitmap_set into inline functions and make this special case efficient. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Matthew Wilcox <[email protected]> Acked-by: Rasmus Villemoes <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Matthew Wilcox <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-07-10lib/test_bitmap.c: add optimisation testsMatthew Wilcox1-0/+32
Patch series "Bitmap optimisations", v2. These three bitmap patches use more efficient specialisations when the compiler can figure out that it's safe to do so. Thanks to Rasmus's eagle eyes, a nasty bug in v1 was avoided, and I've added a test case which would have caught it. This patch (of 4): This version of the test is actually a no-op; the next patch will enable it. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Matthew Wilcox <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Matthew Wilcox <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-02-19test_bitmap: unit tests for lib/bitmap.cDavid Decotigny1-0/+358
This is mainly testing bitmap construction and conversion to/from u32[] for now. Tested: qemu i386, x86_64, ppc, ppc64 BE and LE, ARM. Signed-off-by: David Decotigny <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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