Re: [PATCH] bitmap: bitmap_equal memcmp optimization

On Wed, 8 Jun 2016 13:42:12 -0700 Andrew Morton wrote: > On Tue, 7 Jun 2016 10:37:41 +0200 Martin Schwidefsky > wrote: > > > The bitmap_equal function has optimized code for small bitmaps with less > > than BITS_PER_LONG bits. For larger

Re: [PATCH] bitmap: bitmap_equal memcmp optimization

On Wed, 8 Jun 2016 13:42:12 -0700 Andrew Morton wrote: > On Tue, 7 Jun 2016 10:37:41 +0200 Martin Schwidefsky > wrote: > > > The bitmap_equal function has optimized code for small bitmaps with less > > than BITS_PER_LONG bits. For larger bitmaps the out-of-line function > > __bitmap_equal is

Re: [PATCH] bitmap: bitmap_equal memcmp optimization

On Tue, 7 Jun 2016 10:37:41 +0200 Martin Schwidefsky wrote: > The bitmap_equal function has optimized code for small bitmaps with less > than BITS_PER_LONG bits. For larger bitmaps the out-of-line function > __bitmap_equal is called. > > For a constant number of bits

Re: [PATCH] bitmap: bitmap_equal memcmp optimization

On Tue, 7 Jun 2016 10:37:41 +0200 Martin Schwidefsky wrote: > The bitmap_equal function has optimized code for small bitmaps with less > than BITS_PER_LONG bits. For larger bitmaps the out-of-line function > __bitmap_equal is called. > > For a constant number of bits divisible by

[PATCH] bitmap: bitmap_equal memcmp optimization

The bitmap_equal function has optimized code for small bitmaps with less than BITS_PER_LONG bits. For larger bitmaps the out-of-line function __bitmap_equal is called. For a constant number of bits divisible by BITS_PER_LONG the memcmp function can be used. For s390 gcc knows how to optimize this

[PATCH] bitmap: bitmap_equal memcmp optimization

The bitmap_equal function has optimized code for small bitmaps with less than BITS_PER_LONG bits. For larger bitmaps the out-of-line function __bitmap_equal is called. For a constant number of bits divisible by BITS_PER_LONG the memcmp function can be used. For s390 gcc knows how to optimize this