Paul E. McKenney
910b1b7e19
rcu: Allow RCU CPU stall warnings to be off at boot, but manually enablable ...
Currently, if RCU CPU stall warnings are enabled, they are enabled
immediately upon boot. They can be manually disabled via /sys (and
also re-enabled via /sys), and are automatically disabled upon panic.
However, some users need RCU CPU stalls to be disabled at boot time,
but to be enabled without rebuilding/rebooting. For example, someone
running a real-time application in production might not want the
additional latency of RCU CPU stall detection in normal operation, but
might need to enable it at any point for fault isolation purposes.
This commit therefore provides a new CONFIG_RCU_CPU_STALL_DETECTOR_RUNNABLE
kernel configuration parameter that maintains the current behavior
(enable at boot) by default, but allows a kernel to be configured
with RCU CPU stall detection built into the kernel, but disabled at
boot time.
Requested-by: Clark Williams <williams@redhat.com>
Requested-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2010-08-19 17:18:04 -07:00
lib: add support for LZO-compressed kernels
2010-01-11 09:34:04 -08:00
Further tidyup of raid6 naming in lib/raid6
2010-08-12 06:44:54 +10:00
trivial: fix typo "to to" in multiple files
2009-09-21 15:14:55 +02:00
inflate_fast: sout is already a short so ptr arith was off by one.
2010-03-12 15:52:44 -08:00
tree-wide: convert open calls to remove spaces to skip_spaces() lib function
2009-12-15 08:53:32 -08:00
lib: Fix atomic64_add_unless return value convention
2010-03-01 11:38:46 -08:00
ARM: 6213/1: atomic64_test: add ARM as supported architecture
2010-07-27 10:43:46 +01:00
rtc: BCD codeshrink
2008-07-24 10:47:33 -07:00
Revert "cpusets: randomize node rotor used in cpuset_mem_spread_node()"
2010-05-30 09:00:03 -07:00
lib/btree: fix possible NULL pointer dereference
2010-05-15 12:48:10 -07:00
lib/bug.c: add oops end marker to WARN implementation
2010-08-11 08:59:22 -07:00
oops handling: ensure that any oops is flushed to the mtdoops console
2009-01-06 15:59:11 -08:00
lib/checksum: fix one more thinko
2009-11-03 16:06:53 +01:00
generic, memparse(): constify argument
2008-07-28 15:05:23 +02:00
fault-injection: add CPU notifier error injection module
2010-05-27 09:12:48 -07:00
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
revert "crc32: use __BYTE_ORDER macro for endian detection"
2010-05-26 08:19:23 -07:00
ctype: constify read-only _ctype string
2009-12-15 08:53:32 -08:00
rcu: Introduce lockdep-based checking to RCU read-side primitives
2010-02-25 09:40:59 +01:00
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-05-18 08:17:58 -07:00
atomic: only take lock when the counter drops to zero on UP as well
2009-06-16 19:47:47 -07:00
Add LZO compression support for initramfs and old-style initrd
2010-01-11 09:34:05 -08:00
lib/decompress_bunzip2.c: fix checkstack warning
2010-08-11 08:59:23 -07:00
lzma/gzip: fix potential oops when input data is truncated
2009-09-24 07:21:05 -07:00
lzma/gzip: fix potential oops when input data is truncated
2009-09-24 07:21:05 -07:00
lib: fix the use of LZO to decompress initramfs images
2010-04-24 11:31:25 -07:00
lib/devres.c: fix comment typo
2010-07-11 22:16:32 +02:00
dma-debug: Cleanup for copy-loop in filter_write()
2010-04-07 14:36:27 +02:00
module: initialize module dynamic debug later
2010-07-04 20:17:22 -07:00
module: trim exception table on init free.
2009-06-12 21:47:04 +09:30
headers: remove sched.h from interrupt.h
2009-10-11 11:20:58 -07:00
bitmap: find_last_bit()
2009-01-01 10:12:19 +10:30
flex_array: add helpers to get and put to make pointers easy to use
2010-08-09 20:45:09 -07:00
lib: add lib/gcd.c
2009-06-18 13:04:05 -07:00
crc32: major optimization
2010-05-25 08:07:06 -07:00
genalloc: fix allocation from end of pool
2010-06-29 15:29:30 -07:00
lib: introduce common method to convert hex digits
2010-05-25 08:07:05 -07:00
x86: Add optimized popcnt variants
2010-04-06 15:52:11 -07:00
idr: fix RCU lockdep splat in idr_get_next()
2010-06-23 06:50:45 -07:00
MN10300: Don't try and #include <linux/slab.h> in lib/inflate.c from bootloader
2010-08-12 09:51:35 -07:00
Use WARN() in lib/
2008-07-26 12:00:07 -07:00
iommu: inline iommu_num_pages
2010-08-09 20:45:05 -07:00
x86, ioremap: Fix incorrect physical address handling in PAE mode
2010-07-09 11:42:03 -07:00
kernel: is_current_single_threaded: don't use ->mmap_sem
2009-07-17 09:11:31 +10:00
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
Merge branch 'async' of macbook:git/btrfs-unstable
2010-08-09 10:36:44 +01:00
rcu: Allow RCU CPU stall warnings to be off at boot, but manually enablable
2010-08-19 17:18:04 -07:00
mips,kgdb: kdb low level trap catch and stack trace
2010-05-20 21:04:26 -05:00
kmemcheck: depend on HAVE_ARCH_KMEMCHECK
2009-07-01 22:28:44 +02:00
bkl: Fixup core_lock fallout
2009-12-14 23:55:33 +01:00
driver core: Remove completion from struct klist_node
2009-01-06 10:44:30 -08:00
sysfs: Comment sysfs directory tagging logic
2010-05-21 09:37:31 -07:00
kobject: free memory if netlink_kernel_create() fails
2010-06-04 13:27:52 -07:00
kref: remove kref_set
2010-05-21 09:37:29 -07:00
block: Fix overrun in lcm() and move it to lib
2010-03-15 12:47:59 +01:00
libcrc32c: Fix "crc32c undefined" compilation error
2008-12-25 11:01:42 +11:00
list debugging: warn when deleting a deleted entry
2010-08-09 20:45:08 -07:00
lib: revise list_sort() header comment
2010-03-06 11:26:35 -08:00
locking: rename trace_softirq_[enter|exit] => lockdep_softirq_[enter|exit]
2009-03-13 01:32:36 +01:00
The DRBD driver
2009-10-01 21:17:49 +02:00
Merge branch 'async' of macbook:git/btrfs-unstable
2010-08-09 10:36:44 +01:00
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: remove unnecessary strlen()
2009-12-15 08:53:33 -08:00
tmpfs: add accurate compare function to percpu_counter library
2010-08-09 20:44:58 -07:00
plist: Make plist debugging raw_spinlock aware
2009-12-14 23:55:33 +01:00
lib: fix sparse shadowed variable warning
2009-01-06 15:59:11 -08:00
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: __rcu annotations
2010-08-19 17:18:03 -07:00
Merge branch 'master' into for-next
2010-06-16 18:08:13 +02:00
ratelimit: fix the return value when __ratelimit() fails to acquire the lock
2010-04-07 08:38:04 -07:00
lib/rational.c needs module.h
2010-01-11 09:34:05 -08:00
rbtree: Undo augmented trees performance damage and regression
2010-07-05 14:43:50 +02:00
rwsem generic spinlock: use IRQ save/restore spinlocks
2010-04-07 16:15:05 -07:00
rwsem: smaller wrappers around rwsem_down_failed_common
2010-08-09 20:45:11 -07:00
lib/scatterlist: Hook sg_kmalloc into kmemleak (v2)
2010-07-28 22:59:02 +01:00
mm: use the same log level for show_mem()
2010-03-06 11:26:27 -08:00
cpumask: convert lib/smp_processor_id to new cpumask ops
2009-01-30 15:47:34 +01:00
generic swap(): lib/sort.c: rename swap to swap_func
2009-01-08 08:31:14 -08:00
locking: Further name space cleanups
2009-12-14 23:55:33 +01:00
lib/string.c: simplify strnstr()
2010-03-06 11:26:35 -08:00
[SCSI] lib: string_get_size(): don't hang on zero; no decimals on exact
2008-10-23 11:42:20 -05:00
swiotlb: Make swiotlb bookkeeping functions visible in the header file.
2010-06-07 11:59:27 -04:00
task_current_syscall
2008-07-26 12:00:10 -07:00
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
Unified UUID/GUID definition
2010-05-19 22:40:47 -04:00
lib: vsprintf: useless strlen() removed
2010-08-09 20:45:09 -07:00
910b1b7e19