James Hogan 22d5e20c6a lib/mpi: Fix umul_ppmm() for MIPS64r6 ...

[ Upstream commit bbc25bee37 ]

Current MIPS64r6 toolchains aren't able to generate efficient
DMULU/DMUHU based code for the C implementation of umul_ppmm(), which
performs an unsigned 64 x 64 bit multiply and returns the upper and
lower 64-bit halves of the 128-bit result. Instead it widens the 64-bit
inputs to 128-bits and emits a __multi3 intrinsic call to perform a 128
x 128 multiply. This is both inefficient, and it results in a link error
since we don't include __multi3 in MIPS linux.

For example commit 90a53e4432 ("cfg80211: implement regdb signature
checking") merged in v4.15-rc1 recently broke the 64r6_defconfig and
64r6el_defconfig builds by indirectly selecting MPILIB. The same build
errors can be reproduced on older kernels by enabling e.g. CRYPTO_RSA:

lib/mpi/generic_mpih-mul1.o: In function `mpihelp_mul_1':
lib/mpi/generic_mpih-mul1.c:50: undefined reference to `__multi3'
lib/mpi/generic_mpih-mul2.o: In function `mpihelp_addmul_1':
lib/mpi/generic_mpih-mul2.c:49: undefined reference to `__multi3'
lib/mpi/generic_mpih-mul3.o: In function `mpihelp_submul_1':
lib/mpi/generic_mpih-mul3.c:49: undefined reference to `__multi3'
lib/mpi/mpih-div.o In function `mpihelp_divrem':
lib/mpi/mpih-div.c:205: undefined reference to `__multi3'
lib/mpi/mpih-div.c:142: undefined reference to `__multi3'

Therefore add an efficient MIPS64r6 implementation of umul_ppmm() using
inline assembly and the DMULU/DMUHU instructions, to prevent __multi3
calls being emitted.

Fixes: 7fd08ca58a ("MIPS: Add build support for the MIPS R6 ISA")
Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-mips@linux-mips.org
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-03-03 10:24:29 +01:00

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842

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

fonts

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

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lz4

lib/lz4: make arrays static const, reduces object code size

2017-10-03 17:54:25 -07:00

lzo

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mpi

lib/mpi: Fix umul_ppmm() for MIPS64r6

2018-03-03 10:24:29 +01:00

raid6

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

reed_solomon

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xz

lib/xz: enable all filters by default in Kconfig

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zlib_deflate

zlib_deflate/deftree: remove bi_reverse()

2015-09-10 13:29:01 -07:00

zlib_inflate

lib/zlib_inflate/inftrees.c: fix potential buffer overflow

2017-05-08 17:15:12 -07:00

zstd

lib: Add zstd modules

2017-08-15 09:02:08 -07:00

.gitignore

X.509: Implement simple static OID registry

2012-10-08 13:50:18 +10:30

argv_split.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

asn1_decoder.c

ASN.1: check for error from ASN1_OP_END__ACT actions

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assoc_array.c

assoc_array: Fix a buggy node-splitting case

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atomic64_test.c

lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int

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atomic64.c

locking/atomic: Implement atomic{,64,_long}_fetch_{add,sub,and,andnot,or,xor}{,_relaxed,_acquire,_release}()

2016-06-16 10:48:32 +02:00

audit.c

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bcd.c

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bch.c

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bitmap.c

lib/bitmap.c: make bitmap_parselist() thread-safe and much faster

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bitrev.c

ARM: 8187/1: add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction

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bsearch.c

lib/bsearch.c: micro-optimize pivot position calculation

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btree.c

treewide: Remove old email address

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bug.c

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build_OID_registry

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bust_spinlocks.c

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chacha20.c

random: replace non-blocking pool with a Chacha20-based CRNG

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check_signature.c

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checksum.c

ipv4: Update parameters for csum_tcpudp_magic to their original types

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clz_ctz.c

lib/clz_ctz.c: add prototype declarations in lib/clz_ctz.c

2014-04-03 16:21:12 -07:00

clz_tab.c

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cmdline.c

lib/cmdline.c: remove meaningless comment

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compat_audit.c

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cordic.c

Docs: wording: functions -> algorithm

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cpu_rmap.c

sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()

2015-05-27 15:22:15 +02:00

cpumask.c

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crc4.c

lib: Add crc4 module

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crc7.c

lib/crc7: Shift crc7() output left 1 bit

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crc8.c

lib: crc8: add new library module providing crc8 algorithm

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lib: add module support to crc32 tests

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crc32defs.h

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crc32test.c

lib: add module support to crc32 tests

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crc-ccitt.c

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crc-itu-t.c

lib: crc-itu-t.[ch] fix 0x0x prefix in integer constants

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crc-t10dif.c

lib: introduce crc_t10dif_update()

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ctype.c

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debug_info.c

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debug_locks.c

mutex: Add support for wound/wait style locks

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debugobjects.c

debugobjects: Make kmemleak ignore debug objects

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dec_and_lock.c

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decompress_bunzip2.c

lib/decompressors: use real out buf size for gunzip with kernel

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decompress_inflate.c

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decompress_unlz4.c

lib/decompress_unlz4: change module to work with new LZ4 module version

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decompress_unlzma.c

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decompress_unlzo.c

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decompress_unxz.c

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decompress.c

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devres.c

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digsig.c

lib/digsig: fix dereference of NULL user_key_payload

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div64.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

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dma-debug.c

Merge tag 'dmaengine-4.12-rc1' of git://git.infradead.org/users/vkoul/slave-dma

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dma-noop.c

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dump_stack.c

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dynamic_debug.c

dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0

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dynamic_queue_limits.c

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earlycpio.c

lib/cpio: Make find_cpio_data()'s offset arg optional

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errseq.c

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extable.c

lib/extable.c: use bsearch() library function in search_extable()

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fault-inject.c

fault-inject: fix wrong should_fail() decision in task context

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fdt_empty_tree.c

lib: add fdt_empty_tree.c

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fdt_ro.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

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fdt_rw.c

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fdt_strerror.c

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fdt.c

of/lib: Allow scripts/dtc/libfdt to be used from kernel code

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find_bit.c

lib/find_bit.c: micro-optimise find_next_*_bit

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flex_array.c

reciprocal_divide: update/correction of the algorithm

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flex_proportions.c

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gcd.c

lib/GCD.c: use binary GCD algorithm instead of Euclidean

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gen_crc32table.c

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genalloc.c

lib/genalloc.c: make the avail variable an atomic_long_t

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glob.c

lib: add module support to glob tests

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globtest.c

lib: add module support to glob tests

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hexdump.c

lib/hexdump.c: return -EINVAL in case of error in hex2bin()

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hweight.c

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idr.c

lib/idr.c: fix comment for idr_replace()

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inflate.c

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int_sqrt.c

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interval_tree_test.c

lib/interval_tree: fast overlap detection

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interval_tree.c

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iomap_copy.c

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iomap.c

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iommu-common.c

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iommu-helper.c

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ioremap.c

Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

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iov_iter.c

iov_iter: fix page_copy_sane for compound pages

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irq_poll.c

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irq_regs.c

lib: reduce the use of module.h wherever possible

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is_single_threaded.c

sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>

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jedec_ddr_data.c

ddr: add LPDDR2 data from JESD209-2

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kasprintf.c

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Kconfig

Merge branch 'zstd-minimal' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

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Kconfig.debug

kmemcheck: rip it out

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Kconfig.kasan

kasan: rework Kconfig settings

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Kconfig.kgdb

lib: update location of kgdb documentation

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Kconfig.ubsan

Kconfig: lib/Kconfig.ubsan fix reference to ubsan documentation

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kfifo.c

kfifo: use BUG_ON

2014-08-08 15:57:25 -07:00

klist.c

klist: fix starting point removed bug in klist iterators

2016-02-07 22:18:47 -08:00

kobject_uevent.c

driver core: suppress sending MODALIAS in UNBIND uevents

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kobject.c

kobject: Export kobject_get_unless_zero()

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kstrtox.c

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kstrtox.h

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lcm.c

block: fix blk_stack_limits() regression due to lcm() change

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libcrc32c.c

crypto: Work around deallocated stack frame reference gcc bug on sparc.

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list_debug.c

bug: switch data corruption check to __must_check

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list_sort.c

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llist.c

lib/llist.c: fix data race in llist_del_first

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locking-selftest-hardirq.h

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locking-selftest-mutex.h

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locking-selftest-rtmutex.h

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locking-selftest-wsem.h

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locking-selftest.c

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lockref.c

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lru_cache.c

lru_cache: Converted lc_seq_printf_status to return void

2015-11-25 09:22:02 -07:00

Makefile

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memory-notifier-error-inject.c

memory: memory notifier error injection module

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memweight.c

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net_utils.c

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netdev-notifier-error-inject.c

net: Add support for CHANGEUPPER notifier error injection

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nlattr.c

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nmi_backtrace.c

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nodemask.c

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notifier-error-inject.c

mode_t, whack-a-mole at 11...

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notifier-error-inject.h

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of-reconfig-notifier-error-inject.c

powerpc+of: Rename and fix OF reconfig notifier error inject module

2012-12-14 10:32:52 +11:00

oid_registry.c

509: fix printing uninitialized stack memory when OID is empty

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once.c

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parman.c

lib: Introduce priority array area manager

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parser.c

parser: add u64 number parser

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pci_iomap.c

Merge tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

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percpu_counter.c

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percpu_ida.c

sched/headers: Prepare to remove the <linux/gfp.h> include from <linux/sched.h>

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percpu_test.c

percpu: add test module for various percpu operations

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percpu-refcount.c

percpu-refcount: support synchronous switch to atomic mode.

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plist.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>

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pm-notifier-error-inject.c

PM: PM notifier error injection module

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prime_numbers.c

lib/prime_numbers: Suppress warn on kmalloc failure

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radix-tree.c

radix-tree: must check __radix_tree_preload() return value

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random32.c

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ratelimit.c

lib/ratelimit.c: use deferred printk() version

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rational.c

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rbtree_test.c

lib/rbtree_test.c: support rb_root_cached

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rbtree.c

rbtree: add some additional comments for rebalancing cases

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reciprocal_div.c

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refcount.c

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rhashtable.c

rhashtable: Documentation tweak

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sbitmap.c

sbitmap: add sbitmap_get_shallow() operation

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scatterlist.c

scatterlist: add sg_zero_buffer() helper

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seq_buf.c

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sg_pool.c

lib: scatterlist: move SG pool code from SCSI driver to lib/sg_pool.c

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sg_split.c

lib: scatterlist: add sg splitting function

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sha1.c

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show_mem.c

lib/show_mem.c: teach show_mem to work with the given nodemask

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siphash.c

siphash: implement HalfSipHash1-3 for hash tables

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smp_processor_id.c

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sort.c

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stackdepot.c

lib/stackdepot: export save/fetch stack for drivers

2016-11-11 08:12:37 -08:00

stmp_device.c

lib/stmp_device.c: replace module.h include

2015-02-12 18:54:16 -08:00

string_helpers.c

mm: treewide: remove GFP_TEMPORARY allocation flag

2017-09-13 18:53:16 -07:00

string.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

strncpy_from_user.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

strnlen_user.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

swiotlb.c

swiotlb: suppress warning when __GFP_NOWARN is set

2018-02-22 15:42:15 +01:00

syscall.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

test_bitmap.c

lib/test_bitmap.c: use ULL suffix for 64-bit constants

2017-09-13 18:53:15 -07:00

test_bpf.c

bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-31 14:03:49 +01:00

test_debug_virtual.c

lib: add test module for CONFIG_DEBUG_VIRTUAL

2017-09-08 18:26:49 -07:00

test_firmware.c

test_firmware: fix missing unlock on error in config_num_requests_store()

2018-02-03 17:39:24 +01:00

test_hash.c

lib/test_hash.c: fix warning in preprocessor symbol evaluation

2016-09-01 17:52:01 -07:00

test_hexdump.c

test_hexdump: print statistics at the end

2016-01-20 17:09:18 -08:00

test_kasan.c

kasan: report only the first error by default

2017-03-31 17:13:30 -07:00

test_kmod.c

test_kmod: flip INT checks to be consistent

2017-09-08 18:26:50 -07:00

test_list_sort.c

lib: add module support to linked list sorting tests

2017-05-08 17:15:10 -07:00

test_module.c

test: add minimal module for verification testing

2014-01-23 16:36:57 -08:00

test_parman.c

lib: fix spelling mistake: "actualy" -> "actually"

2017-02-26 11:03:38 -05:00

test_printf.c

mm, printk: introduce new format string for flags

2016-03-15 16:55:16 -07:00

test_rhashtable.c

lib: test_rhashtable: Fix KASAN warning

2017-07-25 12:35:23 -07:00

test_siphash.c

siphash: implement HalfSipHash1-3 for hash tables

2017-01-09 13:58:57 -05:00

test_sort.c

Revert "lib/test_sort.c: make it explicitly non-modular"

2017-05-08 17:15:10 -07:00

test_static_key_base.c

locking/static_keys: Provide a selftest

2015-08-03 11:51:12 +02:00

test_static_keys.c

locking/static_keys: Avoid nested functions

2016-02-09 10:27:29 +01:00

test_sysctl.c

test_sysctl: test against int proc_dointvec() array support

2017-07-12 16:26:00 -07:00

test_user_copy.c

lib: remove check for AVR32 arch in test_user_copy

2017-05-01 09:36:30 +02:00

test_uuid.c

uuid: fix incorrect uuid_equal conversion in test_uuid_test

2017-07-21 09:38:30 +02:00

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.c: remove textsearch_put reference from comments

2014-10-14 02:18:14 +02:00

timerqueue.c

timerqueue: Use rb_entry_safe() instead of open-coding it

2017-01-20 08:03:42 +01:00

ts_bm.c

…

ts_fsm.c

textsearch: fix typos in library helpers

2017-10-22 03:14:07 +01:00

ts_kmp.c

textsearch: fix typos in library helpers

2017-10-22 03:14:07 +01:00

ubsan.c

lib/ubsan: add type mismatch handler for new GCC/Clang

2018-02-16 20:23:09 +01:00

ubsan.h

lib/ubsan: add type mismatch handler for new GCC/Clang

2018-02-16 20:23:09 +01:00

ucs2_string.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

usercopy.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

uuid.c

uuid: hoist uuid_is_null() helper from libnvdimm

2017-06-05 16:59:05 +02:00

vsprintf.c

Merge tag 'devicetree-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2017-07-07 10:37:54 -07:00

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

xxhash.c

lib: Add xxhash module

2017-08-15 09:02:07 -07:00