linux/lib
Matthew Wilcox d37cacc5ad ida: Use exceptional entries for small IDAs
We can use the root entry as a bitmap and save allocating a 128 byte
bitmap for an IDA that contains only a few entries (30 on a 32-bit
machine, 62 on a 64-bit machine).  This costs about 300 bytes of kernel
text on x86-64, so as long as 3 IDAs fall into this category, this
is a net win for memory consumption.

Thanks to Rasmus Villemoes for his work documenting the problem and
collecting statistics on IDAs.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 21:44:02 -05:00
..
842
fonts
lz4
lzo
mpi mpi: Fix NULL ptr dereference in mpi_powm() [ver #3] 2016-11-25 12:57:50 +11:00
raid6 lib/raid6: Add AVX2 optimized xor_syndrome functions 2016-11-07 15:08:20 -08:00
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c
assoc_array.c
atomic64_test.c atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 2016-10-07 18:46:30 -07:00
atomic64.c
audit.c
bcd.c
bch.c
bitmap.c lib/bitmap.c: enhance bitmap syntax 2016-10-11 15:06:30 -07:00
bitrev.c
bsearch.c
btree.c
bug.c
build_OID_registry
bust_spinlocks.c
chacha20.c
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline.c
compat_audit.c
cordic.c
cpu_rmap.c
cpumask.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
ctype.c
debug_info.c
debug_locks.c
debugobjects.c Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2016-12-13 12:59:57 -08:00
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c
digsig.c
div64.c
dma-debug.c dmaengine updates for 4.8-rc1 2016-10-06 17:13:54 -07:00
dma-noop.c
dump_stack.c
dynamic_debug.c
dynamic_queue_limits.c
earlycpio.c
extable.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
fault-inject.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_bit.c
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c lib/genalloc.c: start search from start of chunk 2016-10-27 18:43:43 -07:00
glob.c
halfmd4.c
hexdump.c
hweight.c
idr.c ida: Use exceptional entries for small IDAs 2017-02-13 21:44:02 -05:00
inflate.c
int_sqrt.c
interval_tree_test.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-common.c
iommu-helper.c
ioremap.c mm: do not export ioremap_page_range symbol for external module 2017-01-24 16:26:14 -08:00
iov_iter.c fix a fencepost error in pipe_advance() 2017-01-14 19:50:41 -05:00
irq_poll.c This adds a new gcc plugin named "latent_entropy". It is designed to 2016-10-15 10:03:15 -07:00
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
Kconfig Merge branch 'akpm' (patches from Andrew) 2016-10-07 21:38:00 -07:00
Kconfig.debug lib/Kconfig.debug: fix frv build failure 2017-01-10 18:31:55 -08:00
Kconfig.kasan
Kconfig.kgdb
Kconfig.kmemcheck
Kconfig.ubsan Kconfig: lib/Kconfig.ubsan fix reference to ubsan documentation 2016-12-14 16:04:08 -08:00
kfifo.c
klist.c
kobject_uevent.c kobject: improve function-level documentation 2016-10-28 02:42:10 -04:00
kobject.c
kstrtox.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c bug: Provide toggle for BUG on data corruption 2016-10-31 13:01:58 -07:00
list_sort.c
llist.c
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c locking/selftest: Fix output since KERN_CONT changes 2016-11-25 07:12:19 +01:00
lockref.c locking/core: Remove cpu_relax_lowlatency() users 2016-11-16 10:15:10 +01:00
lru_cache.c
Makefile cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions 2016-12-25 10:47:43 +01:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
netdev-notifier-error-inject.c
nlattr.c netlink: smaller nla_attr_minlen table 2016-11-19 22:11:25 -05:00
nmi_backtrace.c nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
nodemask.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
parser.c parser: add u64 number parser 2016-12-06 10:17:03 +02:00
pci_iomap.c
percpu_counter.c lib/percpu_counter: Convert to hotplug state machine 2016-11-09 23:45:26 +01:00
percpu_ida.c
percpu_test.c
percpu-refcount.c
plist.c
pm-notifier-error-inject.c
radix-tree.c ida: Use exceptional entries for small IDAs 2017-02-13 21:44:02 -05:00
random32.c This adds a new gcc plugin named "latent_entropy". It is designed to 2016-10-15 10:03:15 -07:00
ratelimit.c
rational.c
rbtree_test.c
rbtree.c lib/rbtree.c: fix typo in comment of ____rb_erase_color 2016-12-12 18:55:09 -08:00
reciprocal_div.c
rhashtable.c
sbitmap.c
scatterlist.c
seq_buf.c
sg_pool.c
sg_split.c
sha1.c
show_mem.c
smp_processor_id.c
sort.c
stackdepot.c lib/stackdepot: export save/fetch stack for drivers 2016-11-11 08:12:37 -08:00
stmp_device.c
string_helpers.c
string.c
strncpy_from_user.c lib: harden strncpy_from_user 2016-10-11 15:06:30 -07:00
strnlen_user.c
swiotlb.c swiotlb: ensure that page-sized mappings are page-aligned 2017-01-15 12:37:24 -05:00
syscall.c
test_bitmap.c
test_bpf.c bpf, test: fix ld_abs + vlan push/pop stress test 2016-10-20 14:39:06 -04:00
test_firmware.c
test_hash.c
test_hexdump.c
test_kasan.c kasan: support use-after-scope detection 2016-11-30 16:32:52 -08:00
test_module.c
test_printf.c
test_rhashtable.c
test_static_key_base.c
test_static_keys.c
test_user_copy.c
test_uuid.c
test-kstrtox.c
test-string_helpers.c
textsearch.c
timerqueue.c ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c
ubsan.h
ucs2_string.c
uuid.c
vsprintf.c
win_minmax.c