Dan Williams 0abdd7a81b dma-debug: introduce debug_dma_assert_idle() ... Record actively mapped pages and provide an api for asserting a given page is dma inactive before execution proceeds. Placing debug_dma_assert_idle() in cow_user_page() flagged the violation of the dma-api in the NET_DMA implementation (see commit 7787380336 "net_dma: mark broken"). The implementation includes the capability to count, in a limited way, repeat mappings of the same page that occur without an intervening unmap. This 'overlap' counter is limited to the few bits of tag space in a radix tree. This mechanism is added to mitigate false negative cases where, for example, a page is dma mapped twice and debug_dma_assert_idle() is called after the page is un-mapped once. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: James Bottomley <JBottomley@Parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-01-21 16:19:41 -08:00
..
fonts	lib: Move fonts from drivers/video/console/ to lib/fonts/	2013-06-28 10:28:22 +02:00
lz4	lz4: fix compression/decompression signedness mismatch	2013-09-11 15:59:45 -07:00
lzo
mpi	MPILIB: add module description and license	2013-09-25 17:17:01 +01:00
raid6	md update for v3.12	2013-09-10 13:03:41 -07:00
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c
assoc_array.c	KEYS: Fix multiple key add into associative array	2013-12-02 11:24:18 +00:00
atomic64.c
atomic64_test.c
audit.c
average.c
bcd.c
bch.c
bitmap.c
bitrev.c
bsearch.c
btree.c
bug.c
build_OID_registry	X.509: do not emit any informational output	2013-06-19 17:54:06 +02:00
bust_spinlocks.c
check_signature.c
checksum.c
clz_ctz.c	lib: add weak clz/ctz functions	2013-07-09 10:33:30 -07:00
clz_tab.c
cmdline.c
cordic.c
cpu-notifier-error-inject.c
cpu_rmap.c	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c	crypto: crct10dif - Add fallback for broken initrds	2013-09-12 15:31:34 +10:00
crc7.c
crc8.c
crc16.c
crc32.c	lib: crc32: reduce number of cases for crc32{, c}_combine	2013-11-04 15:27:08 -05:00
crc32defs.h
ctype.c
debug_locks.c	mutex: Add support for wound/wait style locks	2013-06-26 12:10:56 +02:00
debugobjects.c	lib/debugobjects.c: remove unnecessary work pending test	2013-11-13 12:09:22 +09:00
dec_and_lock.c
decompress.c	lib: add support for LZ4-compressed kernel	2013-07-09 10:33:30 -07:00
decompress_bunzip2.c
decompress_inflate.c	lib/decompressors: fix "no limit" output buffer length	2013-09-11 15:58:38 -07:00
decompress_unlz4.c	lib: add support for LZ4-compressed kernel	2013-07-09 10:33:30 -07:00
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
devres.c
digsig.c	lib/digsig.c: use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))	2013-11-13 12:09:22 +09:00
div64.c	math64: New separate div64_u64_rem helper	2013-08-23 09:02:14 -04:00
dma-debug.c	dma-debug: introduce debug_dma_assert_idle()	2014-01-21 16:19:41 -08:00
dump_stack.c	x86, asmlinkage: Make dump_stack visible	2013-08-06 14:21:01 -07:00
dynamic_debug.c	dynamic debug: line queries failing due to uninitialized local variable	2013-08-28 12:10:53 -07:00
dynamic_queue_limits.c
earlycpio.c	earlycpio.c: Fix the confusing comment of find_cpio_data().	2013-08-14 23:24:01 +02:00
extable.c
fault-inject.c	debugfs: add get/set for atomic types	2013-06-03 13:55:01 -07:00
fdt.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
find_last_bit.c
find_next_bit.c
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c	lib/genalloc: add a helper function for DMA buffer allocation	2013-11-13 12:09:22 +09:00
halfmd4.c
hexdump.c	lib: introduce upper case hex ascii helpers	2013-09-20 15:38:26 -04:00
hweight.c
idr.c	idr: print a stack dump after ida_remove warning	2013-07-03 16:08:04 -07:00
inflate.c
int_sqrt.c
interval_tree.c
interval_tree_test_main.c
iomap.c
iomap_copy.c
iommu-helper.c
ioremap.c
iovec.c	Hoist memcpy_fromiovec/memcpy_toiovec into lib/	2013-05-20 10:24:22 +09:30
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
Kconfig	Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2013-11-21 19:46:00 -08:00
Kconfig.debug	dma-debug: introduce debug_dma_assert_idle()	2014-01-21 16:19:41 -08:00
Kconfig.kgdb	treewide: Fix typo in printk	2013-06-18 13:48:45 +02:00
Kconfig.kmemcheck
kfifo.c	kfifo: kfifo_copy_{to,from}_user: fix copied bytes calculation	2013-11-15 09:32:23 +09:00
klist.c	klist: del waiter from klist_remove_waiters before wakeup waitting process	2013-05-21 10:16:39 -07:00
kobject.c	kobject: Fix source code comment spelling	2014-01-08 15:36:18 -08:00
kobject_uevent.c
kstrtox.c
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c
list_sort.c
llist.c	llists-move-llist_reverse_order-from-raid5-to-llistc-fix	2013-11-15 09:32:22 +09:00
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	sched: Introduce preempt_count accessor functions	2013-09-25 14:07:32 +02:00
lockref.c	lockref: include mutex.h rather than reinvent arch_mutex_cpu_relax	2013-11-27 20:37:33 -08:00
lru_cache.c
Makefile	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c	net: core: move mac_pton() to lib/net_utils.c	2013-06-05 12:00:27 -07:00
nlattr.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
parser.c
pci_iomap.c
percpu-refcount.c	percpu-refcount: Add EXPORT_SYMBOL to use percpu_ref from modules	2013-11-07 12:14:52 -08:00
percpu_counter.c	percpu_counter: unbreak __percpu_counter_add()	2014-01-17 11:32:24 +11:00
percpu_ida.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
percpu_test.c	percpu: add test module for various percpu operations	2013-11-13 12:09:11 +09:00
plist.c
pm-notifier-error-inject.c
prio_heap.c
proportions.c
radix-tree.c	lib/radix-tree.c: make radix_tree_node_alloc() work correctly within interrupt	2013-09-11 15:59:36 -07:00
random32.c	random32: use msecs_to_jiffies for reseed timer	2013-11-14 16:06:02 -05:00
ratelimit.c
rational.c
rbtree.c	rbtree: add postorder iteration functions	2013-09-11 15:59:19 -07:00
rbtree_test.c	rbtree_test: add test for postorder iteration	2013-09-11 15:59:20 -07:00
reciprocal_div.c
scatterlist.c	lib/scatterlist: export sg_miter_skip()	2013-12-08 17:56:37 -08:00
sha1.c
show_mem.c	mm: do not walk all of system memory during show_mem	2013-11-13 12:09:09 +09:00
smp_processor_id.c	sched: Introduce preempt_count accessor functions	2013-09-25 14:07:32 +02:00
sort.c
stmp_device.c
string.c
string_helpers.c
strncpy_from_user.c
strnlen_user.c
swiotlb.c	Merge remote-tracking branch 'stefano/swiotlb-xen-9.1' into stable/for-linus-3.13	2013-11-08 16:10:48 -05:00
syscall.c
test-kstrtox.c
test-string_helpers.c
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ucs2_string.c
usercopy.c
uuid.c
vsprintf.c	vsprintf: ignore %n again	2013-11-15 09:32:20 +09:00