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Mikhail Zaslonko aa5b395b69 lib/zlib: add s390 hardware support for kernel zlib_deflate 
Patch series "S390 hardware support for kernel zlib", v3.

With IBM z15 mainframe the new DFLTCC instruction is available.  It
implements deflate algorithm in hardware (Nest Acceleration Unit - NXU)
with estimated compression and decompression performance orders of
magnitude faster than the current zlib.

This patchset adds s390 hardware compression support to kernel zlib.
The code is based on the userspace zlib implementation:

	https://github.com/madler/zlib/pull/410

The coding style is also preserved for future maintainability.  There is
only limited set of userspace zlib functions represented in kernel.
Apart from that, all the memory allocation should be performed in
advance.  Thus, the workarea structures are extended with the parameter
lists required for the DEFLATE CONVENTION CALL instruction.

Since kernel zlib itself does not support gzip headers, only Adler-32
checksum is processed (also can be produced by DFLTCC facility).  Like
it was implemented for userspace, kernel zlib will compress in hardware
on level 1, and in software on all other levels.  Decompression will
always happen in hardware (when enabled).

Two DFLTCC compression calls produce the same results only when they
both are made on machines of the same generation, and when the
respective buffers have the same offset relative to the start of the
page.  Therefore care should be taken when using hardware compression
when reproducible results are desired.  However it does always produce
the standard conform output which can be inflated anyway.

The new kernel command line parameter 'dfltcc' is introduced to
configure s390 zlib hardware support:

    Format: { on | off | def_only | inf_only | always }
     on:       s390 zlib hardware support for compression on
               level 1 and decompression (default)
     off:      No s390 zlib hardware support
     def_only: s390 zlib hardware support for deflate
               only (compression on level 1)
     inf_only: s390 zlib hardware support for inflate
               only (decompression)
     always:   Same as 'on' but ignores the selected compression
               level always using hardware support (used for debugging)

The main purpose of the integration of the NXU support into the kernel
zlib is the use of hardware deflate in btrfs filesystem with on-the-fly
compression enabled.  Apart from that, hardware support can also be used
during boot for decompressing the kernel or the ramdisk image

With the patch for btrfs expanding zlib buffer from 1 to 4 pages (patch
6) the following performance results have been achieved using the
ramdisk with btrfs.  These are relative numbers based on throughput rate
and compression ratio for zlib level 1:

  Input data              Deflate rate   Inflate rate   Compression ratio
                          NXU/Software   NXU/Software   NXU/Software
  stream of zeroes        1.46           1.02           1.00
  random ASCII data       10.44          3.00           0.96
  ASCII text (dickens)    6,21           3.33           0.94
  binary data (vmlinux)   8,37           3.90           1.02

This means that s390 hardware deflate can provide up to 10 times faster
compression (on level 1) and up to 4 times faster decompression (refers
to all compression levels) for btrfs zlib.

Disclaimer: Performance results are based on IBM internal tests using DD
command-line utility on btrfs on a Fedora 30 based internal driver in
native LPAR on a z15 system.  Results may vary based on individual
workload, configuration and software levels.

This patch (of 9):

Create zlib_dfltcc library with the s390 DEFLATE CONVERSION CALL
implementation and related compression functions.  Update zlib_deflate
functions with the hooks for s390 hardware support and adjust workspace
structures with extra parameter lists required for hardware deflate.

Link: http://lkml.kernel.org/r/20200103223334.20669-2-zaslonko@linux.ibm.com
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Co-developed-by: Ilya Leoshkevich <iii@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: 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>
2020-01-31 10:30:40 -08:00
..
842 lib: 842: no need to check return value of debugfs_create functions 2019-07-03 16:57:17 +02:00
crypto crypto: chacha20poly1305 - add back missing test vectors and test chunking 2020-01-22 16:21:11 +08:00
dim lib/dim: Fix -Wunused-const-variable warnings 2019-07-25 11:34:39 -07:00
fonts fonts: Prefer a bigger font for high resolution screens 2019-06-20 10:11:24 +02:00
kunit kunit: allow kunit to be loaded as a module 2020-01-09 16:43:40 -07:00
livepatch livepatch/samples/selftest: Use klp_shadow_alloc() API correctly 2020-01-17 11:12:06 +01:00
lz4 lz4: do not export static symbol 2019-09-20 09:06:26 -07:00
lzo lib/lzo/lzo1x_compress.c: fix alignment bug in lzo-rle 2019-09-25 17:51:41 -07:00
math lib/math/rational.c: fix possible incorrect result from rational fractions helper 2019-12-04 19:44:13 -08:00
mpi lib/mpi: Eliminate unused umul_ppmm definitions for MIPS 2019-08-22 14:39:36 +10:00
raid6 md/raid6: fix algorithm choice under larger PAGE_SIZE 2020-01-13 11:44:09 -08:00
reed_solomon rslib: Make some functions static 2019-07-02 08:41:37 +02:00
vdso lib/vdso: Only read hrtimer_res when needed in __cvdso_clock_getres() 2020-01-16 21:24:46 +01:00
xz lib/xz: fix XZ_DYNALLOC to avoid useless memory reallocations 2019-11-15 18:34:00 -08:00
zlib_deflate lib/zlib: add s390 hardware support for kernel zlib_deflate 2020-01-31 10:30:40 -08:00
zlib_dfltcc lib/zlib: add s390 hardware support for kernel zlib_deflate 2020-01-31 10:30:40 -08:00
zlib_inflate treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
zstd lib/zstd/mem.h: replace __inline by inline 2019-09-15 19:42:16 +02:00
.gitignore lib: add crc64 calculation routines 2018-08-22 10:52:48 -07:00
argv_split.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
ashldi3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120 2019-05-24 17:39:02 +02:00
ashrdi3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120 2019-05-24 17:39:02 +02:00
asn1_decoder.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
assoc_array.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
atomic64_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
atomic64.c locking/atomic: Use s64 for atomic64 2019-06-03 12:32:56 +02:00
audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bcd.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bch.c lib/bch: fix possible stack overrun 2018-10-12 09:17:46 +02:00
bitmap.c bitmap: Introduce bitmap_cut(): cut bits and shift remaining 2020-01-27 08:54:30 +01:00
bitrev.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
bsearch.c lib/bsearch: Use generic type for comparator function 2019-11-14 13:15:11 -05:00
btree.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 431 2019-06-05 17:37:16 +02:00
bucket_locks.c ila: make lockdep happy again 2018-08-16 12:14:42 -07:00
bug.c bug: move WARN_ON() "cut here" into exception handler 2019-09-25 17:51:41 -07:00
build_OID_registry treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
bust_spinlocks.c s390: use common bust_spinlocks() 2018-11-30 07:22:05 +01:00
check_signature.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
clz_ctz.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
clz_tab.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmdline.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
cmpdi2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120 2019-05-24 17:39:02 +02:00
compat_audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpu_rmap.c lib: cpu_rmap: Use pr_warn instead of pr_warning 2019-10-18 15:01:57 +02:00
cpumask.c treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
crc4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc7.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc8.c docs: clean up and add rest of CRC functions to kernel-api.rst 2017-09-26 15:01:20 -06:00
crc16.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc32.c lib/crc32.c: mark crc32_le_base/__crc32c_le_base aliases as __pure 2019-02-15 19:50:07 +01:00
crc32defs.h lib/crc: Move polynomial definition to separate header 2018-07-27 19:04:33 +08:00
crc32test.c lib: add module support to crc32 tests 2017-02-24 17:46:57 -08:00
crc64.c lib: crc64: include <linux/crc64.h> for 'crc64_be' 2020-01-23 11:40:01 -07:00
crc-ccitt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc-itu-t.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc-t10dif.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
ctype.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debug_info.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debug_locks.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
debugobjects.c debugobjects: Fix various data races 2020-01-17 15:45:01 +01:00
dec_and_lock.c atomic: Add irqsave variant of atomic_dec_and_lock() 2018-06-12 23:33:24 +02:00
decompress_bunzip2.c lib: Use existing define with polynomial 2018-07-27 19:16:38 +08:00
decompress_inflate.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
decompress_unlz4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
decompress_unlzma.c lib/decompress_unlzma: Do a NULL check for pointer 2015-09-10 13:29:01 -07:00
decompress_unlzo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 95 2019-05-24 17:37:53 +02:00
decompress_unxz.c lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
decompress.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
devres.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
digsig.c Revert "Merge tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs" 2019-07-10 18:43:43 -07:00
dump_stack.c dump_stack: avoid the livelock of the dump_lock 2019-11-06 08:47:50 -08:00
dynamic_debug.c lib: dynamic_debug: no need to check return value of debugfs_create functions 2019-06-18 13:47:24 +02:00
dynamic_queue_limits.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-11-15 11:56:19 -08:00
earlycpio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 283 2019-06-05 17:36:37 +02:00
errname.c printf: add support for printing symbolic error names 2019-10-17 16:23:25 +02:00
error-inject.c treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
errseq.c errseq: Always report a writeback error once 2018-04-27 08:51:26 -04:00
extable.c lib/extable.c: add missing prototypes 2019-09-25 17:51:39 -07:00
fault-inject.c fault-inject: clean up debugfs file creation logic 2019-06-18 13:47:24 +02:00
fdt_addresses.c libfdt: include fdt_addresses.c 2020-01-08 16:59:19 +00:00
fdt_empty_tree.c lib: add fdt_empty_tree.c 2014-04-30 19:49:37 +01:00
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_bit_benchmark.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
find_bit.c bitops: introduce the for_each_set_clump8 macro 2019-12-04 19:44:12 -08:00
flex_proportions.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gen_crc32table.c lib/crc: Use consistent naming for CRC-32 polynomials 2018-07-27 19:04:33 +08:00
gen_crc64table.c lib: don't depend on linux headers being installed. 2018-12-29 11:36:44 -08:00
genalloc.c lib/genalloc.c: rename addr_in_gen_pool to gen_pool_has_addr 2019-12-04 19:44:13 -08:00
generic-radix-tree.c lib/generic-radix-tree.c: add kmemleak annotations 2019-10-14 15:04:00 -07:00
glob.c lib: add module support to glob tests 2017-02-24 17:46:57 -08:00
globtest.c lib: add module support to glob tests 2017-02-24 17:46:57 -08:00
hexdump.c lib/hexdump: make print_hex_dump_bytes() a nop on !DEBUG builds 2019-09-25 17:51:39 -07:00
hweight.c x86/kconfig: Disable CONFIG_GENERIC_HWEIGHT and remove __HAVE_ARCH_SW_HWEIGHT 2019-05-13 11:07:33 +02:00
idr.c idr: Fix idr_get_next_ul race with idr_remove 2019-11-01 22:26:34 -04:00
inflate.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
interval_tree_test.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
interval_tree.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
iomap_copy.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504 2019-06-19 17:09:56 +02:00
iomap.c iomap: introduce io{read|write}64_{lo_hi|hi_lo} 2019-01-22 13:39:59 +01:00
iommu-helper.c iommu-helper: mark iommu_is_span_boundary as inline 2018-05-09 06:55:44 +02:00
ioremap.c lib: provide a simple generic ioremap implementation 2019-11-11 21:18:20 +01:00
iov_iter.c pipe: Fix bogus dereference in iov_iter_alignment() 2019-12-16 12:48:10 -05:00
irq_poll.c lib/irq_poll: Support schedules in non-interrupt contexts 2019-02-19 20:52:19 -07:00
irq_regs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
is_single_threaded.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
kasprintf.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig lib/zlib: add s390 hardware support for kernel zlib_deflate 2020-01-31 10:30:40 -08:00
Kconfig.debug linux-kselftest-5.6-rc1-kunit 2020-01-29 15:25:34 -08:00
Kconfig.kasan kasan: support backing vmalloc space with real shadow memory 2019-12-01 12:59:05 -08:00
Kconfig.kgdb lib/: fix Kconfig indentation 2019-12-07 11:00:19 -08:00
Kconfig.ubsan treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
kfifo.c Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()" 2019-08-30 18:47:15 -07:00
klist.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248 2019-06-19 17:09:08 +02:00
kobject_uevent.c kobject: Don't trigger kobject_uevent(KOBJ_REMOVE) twice. 2019-04-01 07:37:12 +02:00
kobject.c lib : kobject: fix refcount imblance on kobject_rename 2019-06-19 19:27:39 +02:00
kstrtox.c lib/kstrtox.c: delete unnecessary casts 2018-10-31 08:54:13 -07:00
kstrtox.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
libcrc32c.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
list_debug.c lib/list_debug.c: print unmangled addresses 2018-04-11 10:28:35 -07:00
list_sort.c lib: list_sort.c: add a blank line to avoid kernel-doc warnings 2019-06-20 14:07:34 -06:00
list-test.c kunit: allow kunit tests to be loaded as a module 2020-01-09 16:42:29 -07:00
llist.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
locking-selftest-hardirq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-mutex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-rsem.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-rtmutex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-softirq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-wsem.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest.c locking/lockdep: Remove unused @nested argument from lock_release() 2019-10-09 12:46:10 +02:00
lockref.c lockref: Limit number of cmpxchg loop retries 2019-06-07 13:15:06 -07:00
logic_pio.c lib: logic_pio: Enforce LOGIC_PIO_INDIRECT region ops are set at registration 2019-11-05 08:45:25 +08:00
lru_cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 91 2019-05-24 17:37:53 +02:00
lshrdi3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120 2019-05-24 17:39:02 +02:00
Makefile lib/zlib: add s390 hardware support for kernel zlib_deflate 2020-01-31 10:30:40 -08:00
memcat_p.c lib: Fix ia64 bootloader linkage 2018-10-16 13:45:44 +02:00
memory-notifier-error-inject.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
memregion.c lib: Uplevel the pmem "region" ida to a global allocator 2019-11-07 15:44:29 +01:00
memweight.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
muldi3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120 2019-05-24 17:39:02 +02:00
net_utils.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netdev-notifier-error-inject.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
nlattr.c netlink: add validation of NLA_F_NESTED flag 2019-05-04 01:27:11 -04:00
nmi_backtrace.c printk/nmi: Prevent deadlock when accessing the main log buffer in NMI 2018-07-09 14:10:40 +02:00
nodemask.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
notifier-error-inject.c lib: notifier-error-inject: no need to check return value of debugfs_create functions 2019-07-03 16:57:18 +02:00
notifier-error-inject.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
objagg.c lib: objagg: Use struct_size() in kzalloc() 2019-06-05 19:03:39 -07:00
of-reconfig-notifier-error-inject.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
oid_registry.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
once.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
packing.c lib: Add support for generic packing operations 2019-05-03 10:49:17 -04:00
parman.c lib: Introduce priority array area manager 2017-02-03 16:35:42 -05:00
parser.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
pci_iomap.c PCI: Add SPDX GPL-2.0 when no license was specified 2018-01-26 11:45:16 -06:00
percpu_counter.c notifier: Remove notifier header file wherever not used 2018-08-30 12:56:40 +02:00
percpu_test.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
percpu-refcount.c Merge branch 'for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu 2019-07-14 16:17:18 -07:00
plist.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 10 2019-05-21 11:28:45 +02:00
pm-notifier-error-inject.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
radix-tree.c idr: Fix idr_alloc_u32 on 32-bit systems 2019-11-03 06:36:50 -05:00
random32.c lib: Correct comment of prandom_seed 2019-05-17 11:32:47 -07:00
ratelimit.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
rbtree_test.c augmented rbtree: add new RB_DECLARE_CALLBACKS_MAX macro 2019-09-25 17:51:39 -07:00
rbtree.c lib/rbtree: avoid generating code twice for the cached versions 2019-07-16 19:23:22 -07:00
refcount.c locking/refcount: Consolidate implementations of refcount_t 2019-11-25 09:15:32 +01:00
rhashtable.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sbitmap.c sbitmap: only queue kyber's wait callback if not already active 2019-12-20 16:51:54 -07:00
scatterlist.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
seq_buf.c seq_buf: Add printing formatted hex dumps 2019-11-14 13:15:12 -05:00
sg_pool.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
sg_split.c lib: scatterlist: Fix to support no mapped sg 2019-08-08 07:45:01 -06:00
sha1.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
show_mem.c mm: remove quicklist page table caches 2019-09-24 15:54:09 -07:00
siphash.c lib/siphash.c: mark expected switch fall-throughs 2019-04-25 19:47:24 +02:00
smp_processor_id.c lib/smp_processor_id: Don't use cpumask_equal() 2019-10-09 12:46:10 +02:00
sort.c lib/sort: Move swap, cmp and cmp_r function types for wider use 2019-11-14 13:15:11 -05:00
stackdepot.c lib/stackdepot: Fix outdated comments 2019-08-19 12:57:28 +02:00
stmp_device.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
string_helpers.c lib/string_helpers: fix some kerneldoc warnings 2019-07-16 19:23:22 -07:00
string.c lib/string: Make memzero_explicit() inline instead of external 2019-10-08 13:27:05 +02:00
strncpy_from_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-24 09:27:34 -08:00
strnlen_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-24 09:27:34 -08:00
syscall.c syscalls: Remove start and number from syscall_get_arguments() args 2019-04-05 09:26:43 -04:00
test_bitfield.c bitfield: add tests 2018-06-27 18:58:49 +03:00
test_bitmap.c lib/test_bitmap: correct test data offsets for 32-bit 2020-01-31 10:30:36 -08:00
test_blackhole_dev.c blackhole_dev: add a selftest 2019-07-01 19:34:46 -07:00
test_bpf.c bpf, testing: Introduce 'gso_linear_no_head_frag' skb_segment test 2019-10-30 16:37:08 +01:00
test_debug_virtual.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
test_firmware.c test_firmware: add support for request_firmware_into_buf 2019-09-04 13:31:28 +02:00
test_hash.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
test_hexdump.c test_hexdump: use memcpy instead of strncpy 2018-11-30 12:13:15 -08:00
test_ida.c test_ida: Fix lockdep warning 2018-10-15 16:31:29 -04:00
test_kasan.c lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more() 2020-01-31 10:30:38 -08:00
test_kmod.c lib/test_kmod.c: potential double free in error handling 2019-02-01 15:46:23 -08:00
test_list_sort.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
test_memcat_p.c lib: Fix ia64 bootloader linkage 2018-10-16 13:45:44 +02:00
test_meminit.c lib/test_meminit.c: add bulk alloc/free tests 2019-12-04 19:44:13 -08:00
test_module.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
test_objagg.c test_objagg: Uninitialized variable in error handling 2019-02-13 22:13:29 -08:00
test_overflow.c lib/test_overflow.c: avoid tainting the kernel and fix wrap size 2019-07-16 19:23:22 -07:00
test_parman.c lib: fix spelling mistake: "actualy" -> "actually" 2017-02-26 11:03:38 -05:00
test_printf.c Device properties framework updates for 5.5-rc1 2019-11-26 19:45:12 -08:00
test_rhashtable.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
test_siphash.c siphash: implement HalfSipHash1-3 for hash tables 2017-01-09 13:58:57 -05:00
test_sort.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
test_stackinit.c lib/test_stackinit: Handle Clang auto-initialization pattern 2019-06-05 07:36:43 -07:00
test_static_key_base.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
test_static_keys.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
test_string.c lib/test_string.c: add some testcases for strchr and strnchr 2019-07-16 19:23:22 -07:00
test_strscpy.c lib: Add test module for strscpy_pad 2019-04-08 16:44:21 -06:00
test_sysctl.c tools/testing/selftests/sysctl/sysctl.sh: add proc_do_large_bitmap() test case 2019-05-14 19:52:51 -07:00
test_ubsan.c lib/test_ubsan.c: VLA no longer used in kernel 2019-03-07 18:32:00 -08:00
test_user_copy.c usercopy: Avoid soft lockups in test_check_nonzero_user() 2019-10-16 14:56:21 +02:00
test_uuid.c uuid: fix incorrect uuid_equal conversion in test_uuid_test 2017-07-21 09:38:30 +02:00
test_vmalloc.c lib/test_vmalloc.c:test_func(): eliminate local `ret' 2019-05-14 19:52:49 -07:00
test_xarray.c XArray: Fix xas_find returning too many entries 2020-01-17 22:33:33 -05:00
test-kstrtox.c kstrto*: accept "-0" for signed conversion 2015-09-10 13:29:01 -07:00
test-string_helpers.c lib/test-string_helpers.c: fix and improve string_get_size() tests 2016-02-03 08:28:43 -08:00
textsearch.c lib: textsearch: fix escapes in example code 2019-10-03 12:12:23 -04:00
timerqueue.c lib/timerqueue: Rely on rbtree semantics for next timer 2019-07-24 17:38:01 +02:00
ts_bm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ts_fsm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ts_kmp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ubsan.c lib/ubsan: don't serialize UBSAN report 2019-12-04 19:44:14 -08:00
ubsan.h int128: move __uint128_t compiler test to Kconfig 2019-11-17 09:02:42 +08:00
ucmpdi2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 120 2019-05-24 17:39:02 +02:00
ucs2_string.c lib/ucs2_string.c: add MODULE_LICENSE() 2018-06-07 17:34:39 -07:00
usercopy.c lib: introduce copy_struct_from_user() helper 2019-10-01 15:45:03 +02:00
uuid.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
vsprintf.c rss_stat: add support to detect RSS updates of external mm 2019-12-01 06:29:18 -08:00
win_minmax.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xarray.c XArray: Fix xas_find returning too many entries 2020-01-17 22:33:33 -05:00
xxhash.c lib: Add xxhash module 2017-08-15 09:02:07 -07:00