linux/lib
Colin Cross fee519389c hardlockup: detect hard lockups without NMIs using secondary cpus
Emulate NMIs on systems where they are not available by using timer
interrupts on other cpus.  Each cpu will use its softlockup hrtimer
to check that the next cpu is processing hrtimer interrupts by
verifying that a counter is increasing.

This patch is useful on systems where the hardlockup detector is not
available due to a lack of NMIs, for example most ARM SoCs.
Without this patch any cpu stuck with interrupts disabled can
cause a hardware watchdog reset with no debugging information,
but with this patch the kernel can detect the lockup and panic,
which can result in useful debugging info.

Signed-off-by: Colin Cross <ccross@android.com>
2013-07-01 14:16:17 -07:00
..
lzo lib/lzo: Update LZO compression to current upstream version 2013-02-20 19:36:01 +01:00
mpi lib/mpi/mpicoder.c: looping issue, need stop when equal to zero, found by 'EXTRA_FLAGS=-W'. 2013-06-12 16:29:44 -07:00
raid6
reed_solomon
xz decompressors: fix typo "POWERPC" 2013-03-13 15:21:48 -07:00
zlib_deflate
zlib_inflate
.gitignore
argv_split.c argv_split(): teach it to handle mutable strings 2013-04-29 18:28:19 -07:00
asn1_decoder.c Nothing all that exciting; a new module-from-fd syscall for those who want 2012-12-19 07:55:08 -08:00
atomic64_test.c
atomic64.c lib: atomic64: Initialize locks statically to fix early users 2012-12-20 13:50:16 -08:00
audit.c
average.c
bcd.c
bch.c
bitmap.c
bitrev.c
bsearch.c
btree.c
bug.c taint: add explicit flag to show whether lock dep is still OK. 2013-01-21 17:17:57 +10:30
build_OID_registry
bust_spinlocks.c printk: Provide a wake_up_klogd() off-case 2013-03-22 16:41:20 -07:00
check_signature.c
checksum.c asm-generic headers: Allow yet more arch overrides in checksum.h 2013-02-11 20:00:33 +05:30
clz_tab.c
cmdline.c
cordic.c
cpu_rmap.c lib: cpu_rmap: avoid flushing all workqueues 2013-01-11 14:54:54 -08:00
cpu-notifier-error-inject.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_locks.c
debugobjects.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlzma.c
decompress_unlzo.c lib/lzo: Rename lzo1x_decompress.c to lzo1x_decompress_safe.c 2013-02-20 19:36:00 +01:00
decompress_unxz.c
decompress.c lib/decompress.c: fix initconst 2013-04-30 17:04:09 -07:00
devres.c lib/devres.c: fix misplaced #endif 2013-02-27 19:10:09 -08:00
digsig.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2013-02-21 08:18:12 -08:00
div64.c Revert "math64: New div64_u64_rem helper" 2013-04-30 19:13:05 +02:00
dma-debug.c dma-debug: update DMA debug API to better handle multiple mappings of a buffer 2013-03-22 16:41:20 -07:00
dump_stack.c dump_stack: consolidate dump_stack() implementations and unify their behaviors 2013-04-30 17:04:02 -07:00
dynamic_debug.c dynamic_debug: reuse generic string_unescape function 2013-04-30 17:04:03 -07:00
dynamic_queue_limits.c
earlycpio.c
extable.c
fault-inject.c lib/: rename random32() to prandom_u32() 2013-04-29 18:28:42 -07:00
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_last_bit.c
find_next_bit.c
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c genalloc: add devres support, allow to find a managed pool by device 2013-04-29 18:28:13 -07:00
halfmd4.c
hexdump.c dynamic_debug: dynamic hex dump 2013-01-17 12:19:09 -08:00
hweight.c
idr.c idr: introduce idr_alloc_cyclic() 2013-04-29 18:28:41 -07:00
inflate.c
int_sqrt.c lib/int_sqrt.c: optimize square root algorithm 2013-04-29 18:28:19 -07:00
interval_tree_test_main.c random32: rename random32 to prandom 2012-12-17 17:15:26 -08:00
interval_tree.c
iomap_copy.c
iomap.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 Move utf16 functions to kernel core and rename 2013-04-15 21:23:03 +01:00
Kconfig.debug hardlockup: detect hard lockups without NMIs using secondary cpus 2013-07-01 14:16:17 -07:00
Kconfig.kgdb KGDB/KDB fixes and cleanups 2013-03-02 08:31:39 -08:00
Kconfig.kmemcheck
kfifo.c kfifo: fix kfifo_alloc() and kfifo_init() 2013-02-27 19:10:23 -08:00
klist.c klist: del waiter from klist_remove_waiters before wakeup waitting process 2013-05-21 10:16:39 -07:00
kobject_uevent.c
kobject.c kref: minor cleanup 2013-05-07 16:09:00 -07:00
kstrtox.c kstrto*: add documentation 2012-12-17 17:15:22 -08:00
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c
list_sort.c lib/: rename random32() to prandom_u32() 2013-04-29 18:28:42 -07:00
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 lockdep: Selftest: convert spinlock to raw spinlock 2013-02-19 08:43:35 +01:00
lru_cache.c lru_cache: introduce lc_get_cumulative() 2013-03-22 22:17:36 -06:00
Makefile lib: make iovec obj instead of lib 2013-05-23 09:17:11 -07:00
md5.c
memory-notifier-error-inject.c
memweight.c
nlattr.c
notifier-error-inject.c mode_t, whack-a-mole at 11... 2013-04-09 14:13:05 -04:00
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c Give the OID registry file module info to avoid kernel tainting 2013-05-05 14:38:00 -07:00
parser.c lib/parser.c: fix up comments for valid return values from match_number 2013-02-21 17:22:25 -08:00
pci_iomap.c
percpu_counter.c
percpu-rwsem.c percpu_rw_semaphore: add lockdep annotations 2012-12-17 17:15:18 -08:00
plist.c
pm-notifier-error-inject.c
prio_heap.c
proportions.c
radix-tree.c
random32.c prandom: introduce prandom_bytes() and prandom_bytes_state() 2012-12-17 17:15:26 -08:00
ratelimit.c
rational.c
rbtree_test.c rbtree_test: add __init/__exit annotations 2013-04-30 17:04:07 -07:00
rbtree.c lib/rbtree.c: avoid the use of non-static __always_inline 2013-01-11 14:54:56 -08:00
reciprocal_div.c
rwsem-spinlock.c rwsem: simplify __rwsem_do_wake 2013-05-07 07:20:16 -07:00
rwsem.c rwsem: check counter to avoid cmpxchg calls 2013-05-07 16:11:51 -07:00
scatterlist.c lib/scatterlist: sg_page_iter: support sg lists w/o backing pages 2013-03-27 17:13:44 +01:00
sha1.c
show_mem.c mm, show_mem: suppress page counts in non-blockable contexts 2013-04-29 15:54:28 -07:00
smp_processor_id.c
sort.c
spinlock_debug.c
stmp_device.c
string_helpers.c lib/string_helpers: introduce generic string_unescape 2013-04-30 17:04:03 -07:00
string.c
strncpy_from_user.c
strnlen_user.c
swiotlb.c x86, kdump: Set crashkernel_low automatically 2013-04-17 12:35:32 -07:00
syscall.c
test-kstrtox.c
test-string_helpers.c lib/string_helpers: introduce generic string_unescape 2013-04-30 17:04:03 -07:00
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ucs2_string.c Move utf16 functions to kernel core and rename 2013-04-15 21:23:03 +01:00
usercopy.c Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS 2013-04-30 17:04:09 -07:00
uuid.c uuid: use prandom_bytes() 2013-04-29 18:28:42 -07:00
vsprintf.c vsprintf: Add extension %pSR - print_symbol replacement 2013-04-30 22:31:16 +02:00