Paul Mackerras 09d4e0edd4 lib: Provide generic atomic64_t implementation ... Many processor architectures have no 64-bit atomic instructions, but we need atomic64_t in order to support the perf_counter subsystem. This adds an implementation of 64-bit atomic operations using hashed spinlocks to provide atomicity. For each atomic operation, the address of the atomic64_t variable is hashed to an index into an array of 16 spinlocks. That spinlock is taken (with interrupts disabled) around the operation, which can then be coded non-atomically within the lock. On UP, all the spinlock manipulation goes away and we simply disable interrupts around each operation. In fact gcc eliminates the whole atomic64_lock variable as well. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2009-06-15 13:27:38 +10:00
..
lzo	lzo: use get/put_unaligned_* helpers	2008-07-25 10:53:26 -07:00
reed_solomon
zlib_deflate
zlib_inflate	bzip2/lzma: library support for gzip, bzip2 and lzma decompression	2009-01-04 15:53:34 -08:00
.gitignore
argv_split.c
atomic64.c	lib: Provide generic atomic64_t implementation	2009-06-15 13:27:38 +10:00
audit.c
bcd.c	rtc: BCD codeshrink	2008-07-24 10:47:33 -07:00
bitmap.c	bitmap: fix end condition in bitmap_find_free_region	2009-03-12 19:32:51 -07:00
bitrev.c	lib: export bitrev16	2008-06-06 11:29:10 -07:00
bug.c	allow bug table entries to use relative pointers (and use it on x86-64)	2008-12-16 18:40:32 +01:00
bust_spinlocks.c	oops handling: ensure that any oops is flushed to the mtdoops console	2009-01-06 15:59:11 -08:00
check_signature.c
checksum.c	add generic lib/checksum.c	2009-06-11 21:02:51 +02:00
cmdline.c	generic, memparse(): constify argument	2008-07-28 15:05:23 +02:00
cpumask.c	x86: remove some alloc_bootmem_cpumask_var calling	2009-06-11 19:27:07 +03:00
crc7.c
crc16.c
crc32.c
crc32defs.h
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c	[SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC	2008-07-12 08:22:32 -05:00
ctype.c
debug_locks.c	lockdep: warn about lockdep disabling after kernel taint	2009-04-12 16:10:51 +02:00
debugobjects.c	debugobjects: delay free of internal objects	2009-03-17 12:28:30 +01:00
dec_and_lock.c
decompress_bunzip2.c	kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_bunzip2.c	2009-04-03 12:22:45 +02:00
decompress_inflate.c	kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_inflate.c	2009-04-03 12:21:36 +02:00
decompress_unlzma.c	kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_unlzma.c	2009-04-03 12:22:59 +02:00
decompress.c	bzip2/lzma: don't stop search at first unconfigured compression	2009-02-19 13:36:55 -08:00
devres.c
div64.c	add an inlined version of iter_div_u64_rem	2008-06-12 10:47:58 +02:00
dma-debug.c	dma-debug: simplify logic in driver_filter()	2009-06-08 15:53:46 +02:00
dump_stack.c
dynamic_debug.c	Dynamic debug: allow simple quoting of words	2009-03-24 16:38:27 -07:00
extable.c	module: trim exception table on init free.	2009-06-12 21:47:04 +09:30
fault-inject.c	Remove remaining unwinder code	2009-01-06 15:59:11 -08:00
find_last_bit.c	bitmap: find_last_bit()	2009-01-01 10:12:19 +10:30
find_next_bit.c
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c	lib: create common ascii hex array	2008-05-14 19:11:14 -07:00
hweight.c
idr.c	cgroup: CSS ID support	2009-04-02 19:04:53 -07:00
inflate.c	inflate: refactor inflate malloc code	2008-07-25 10:53:28 -07:00
int_sqrt.c
iomap_copy.c
iomap.c	Use WARN() in lib/	2008-07-26 12:00:07 -07:00
iommu-helper.c	introduce generic iommu_num_pages function	2008-10-16 11:21:33 -07:00
ioremap.c
irq_regs.c
is_single_threaded.c	CRED: Rename is_single_threaded() to is_wq_single_threaded()	2008-11-14 10:39:21 +11:00
kasprintf.c
Kconfig	lib: Provide generic atomic64_t implementation	2009-06-15 13:27:38 +10:00
Kconfig.debug	kmemleak: Simple testing module for kmemleak	2009-06-11 17:04:19 +01:00
Kconfig.kgdb	kgdb: remove the requirement for CONFIG_FRAME_POINTER	2008-08-01 08:39:34 -05:00
kernel_lock.c	sched: TIF_NEED_RESCHED -> need_reshed() cleanup	2009-03-06 12:48:55 +01:00
klist.c	driver core: Remove completion from struct klist_node	2009-01-06 10:44:30 -08:00
kobject_uevent.c	driver core: allow non-root users to listen to uevents	2009-04-16 16:17:09 -07:00
kobject.c	driver: dont update dev_name via device_add path	2009-04-20 08:12:58 -07:00
kref.c
libcrc32c.c	libcrc32c: Fix "crc32c undefined" compilation error	2008-12-25 11:01:42 +11:00
list_debug.c	list debugging: use WARN() instead of BUG()	2008-07-25 10:53:29 -07:00
lmb.c	lmb: Rework lmb_dump_all() output	2009-02-11 13:38:00 +11:00
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: rename trace_softirq_[enter|exit] => lockdep_softirq_[enter|exit]	2009-03-13 01:32:36 +01:00
Makefile	lib: Provide generic atomic64_t implementation	2009-06-15 13:27:38 +10:00
nlattr.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6	2009-03-26 22:45:23 -07:00
parser.c	vfs: Use const for kernel parser table	2008-10-13 10:10:37 -07:00
percpu_counter.c	Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-06 17:10:04 -08:00
plist.c	Use WARN() in lib/	2008-07-26 12:00:07 -07:00
prio_heap.c	lib: fix sparse shadowed variable warning	2009-01-06 15:59:11 -08:00
prio_tree.c
proportions.c	Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-06 17:10:04 -08:00
radix-tree.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2009-01-07 11:31:52 -08:00
random32.c	random32: seeding improvement	2008-07-30 16:29:19 -07:00
ratelimit.c	__ratelimit() cpu flags can't be static	2008-07-28 16:30:20 -07:00
rational.c	lib: isolate rational fractions helper function	2009-06-11 08:51:08 -07:00
rbtree.c	lib/rbtree.c: optimize rb_erase()	2009-04-01 08:59:17 -07:00
reciprocal_div.c
rwsem-spinlock.c
rwsem.c
scatterlist.c	scatterlist: make sure sg_miter_next() doesn't return 0 sized mappings	2009-04-22 08:35:09 +02:00
sha1.c
show_mem.c	lib: generic show_mem()	2008-07-26 12:00:10 -07:00
smp_processor_id.c	cpumask: convert lib/smp_processor_id to new cpumask ops	2009-01-30 15:47:34 +01:00
sort.c	generic swap(): lib/sort.c: rename swap to swap_func	2009-01-08 08:31:14 -08:00
spinlock_debug.c
string_helpers.c	[SCSI] lib: string_get_size(): don't hang on zero; no decimals on exact	2008-10-23 11:42:20 -05:00
string.c
swiotlb.c	swiotlb: change swiotlb_bus_to[phys,virt] prototypes	2009-04-08 16:18:38 +02:00
syscall.c	task_current_syscall	2008-07-26 12:00:10 -07:00
textsearch.c	remove CONFIG_KMOD from lib	2008-07-22 19:24:31 +10:00
ts_bm.c	textsearch: ts_bm: support case insensitive searching in Boyer-Moore algorithm	2008-07-08 02:37:54 -07:00
ts_fsm.c	textsearch: ts_fsm: return error on request for case insensitive search	2008-07-08 02:38:27 -07:00
ts_kmp.c	textsearch: ts_kmp: support case insensitive searching in Knuth-Morris-Pratt algorithm	2008-07-08 02:38:09 -07:00
vsprintf.c	vsprintf: introduce %pf format specifier	2009-04-29 20:55:55 +02:00