tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
s390/bitops: remove outdated comment
The s390 specific little endian bitop macros are gone since a long time.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
authored by
Heiko Carstens
and committed by
Martin Schwidefsky
9b62330f
faee35a5
-8
-8
arch/s390/include/asm/bitops.h
-8
arch/s390/include/asm/bitops.h
···
15
15
* end up numbered:
16
16
* |63..............0|127............64|191...........128|255...........192|
17
17
*
18
-
* There are a few little-endian macros used mostly for filesystem
19
-
* bitmaps, these work on similar bit array layouts, but byte-oriented:
20
-
* |7...0|15...8|23...16|31...24|39...32|47...40|55...48|63...56|
21
-
*
22
-
* The main difference is that bit 3-5 in the bit number field needs to be
23
-
* reversed compared to the big-endian bit fields. This can be achieved by
24
-
* XOR with 0x38.
25
-
*
26
18
* We also have special functions which work with an MSB0 encoding.
27
19
* The bits are numbered:
28
20
* |0..............63|64............127|128...........191|192...........255|