diff options
| author |   Mikhail Zaslonko <zaslonko@linux.ibm.com> | 2020-01-30 22:16:30 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-31 10:30:40 -0800 |
| commit | 803521b149c8c71a712445a32bd9316e074df76a (patch) | |
| tree | 6a739818beeedb2cdea05dbcc083eb8013989442 /lib/zlib_deflate/deflate.c | |
| parent | s390/boot: add dfltcc= kernel command line parameter (diff) | |
| download | linux-dev-803521b149c8c71a712445a32bd9316e074df76a.tar.xz linux-dev-803521b149c8c71a712445a32bd9316e074df76a.zip | |
lib/zlib: add zlib_deflate_dfltcc_enabled() function
Add a new function to zlib.h checking if s390 Deflate-Conversion
facility is installed and enabled.
Link: http://lkml.kernel.org/r/20200103223334.20669-6-zaslonko@linux.ibm.com
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Eduard Shishkin <edward6@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/zlib_deflate/deflate.c')
| -rw-r--r-- | lib/zlib_deflate/deflate.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/zlib_deflate/deflate.c b/lib/zlib_deflate/deflate.c index 0d60d81a2637..8a878d0d892c 100644 --- a/lib/zlib_deflate/deflate.c +++ b/lib/zlib_deflate/deflate.c @@ -59,6 +59,7 @@ #define DEFLATE_RESET_HOOK(strm) do {} while (0) #define DEFLATE_HOOK(strm, flush, bstate) 0 #define DEFLATE_NEED_CHECKSUM(strm) 1 +#define DEFLATE_DFLTCC_ENABLED() 0 #endif /* =========================================================================== @@ -1138,3 +1139,8 @@ int zlib_deflate_workspacesize(int windowBits, int memLevel) + zlib_deflate_head_memsize(memLevel) + zlib_deflate_overlay_memsize(memLevel); } + +int zlib_deflate_dfltcc_enabled(void) +{ + return DEFLATE_DFLTCC_ENABLED(); +} |