Ulrich Obergfell
195daf665a
watchdog: enable the new user interface of the watchdog mechanism ...
With the current user interface of the watchdog mechanism it is only
possible to disable or enable both lockup detectors at the same time.
This series introduces new kernel parameters and changes the semantics of
some existing kernel parameters, so that the hard lockup detector and the
soft lockup detector can be disabled or enabled individually. With this
series applied, the user interface is as follows.
- parameters in /proc/sys/kernel
. soft_watchdog
This is a new parameter to control and examine the run state of
the soft lockup detector.
. nmi_watchdog
The semantics of this parameter have changed. It can now be used
to control and examine the run state of the hard lockup detector.
. watchdog
This parameter is still available to control the run state of both
lockup detectors at the same time. If this parameter is examined,
it shows the logical OR of soft_watchdog and nmi_watchdog.
. watchdog_thresh
The semantics of this parameter are not affected by the patch.
- kernel command line parameters
. nosoftlockup
The semantics of this parameter have changed. It can now be used
to disable the soft lockup detector at boot time.
. nmi_watchdog=0 or nmi_watchdog=1
Disable or enable the hard lockup detector at boot time. The patch
introduces '=1' as a new option.
. nowatchdog
The semantics of this parameter are not affected by the patch. It
is still available to disable both lockup detectors at boot time.
Also, remove the proc_dowatchdog() function which is no longer needed.
[dzickus@redhat.com: wrote changelog]
[dzickus@redhat.com: update documentation for kernel params and sysctl]
Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14 16:48:59 -07:00
libceph: tcp_nodelay support
2015-02-19 13:31:40 +03:00
fsl /bestcomm
iio: add support for hardware fifo
2015-03-29 16:17:10 +01:00
irqchip core change for v4.1 (round 3)
2015-04-11 11:17:28 +02:00
USB patches for 4.1-rc1
2015-04-13 17:07:21 -07:00
net/mlx4_core: Fix wrong mask and error flow for the update-qp command
2015-03-02 15:27:19 -05:00
mmc: dw_mmc: fix fifo ordering in big endian
2015-04-09 09:08:15 +02:00
MTD updates for 3.20-rc1
2015-02-18 08:01:44 -08:00
SCSI misc on 20150209
2015-02-11 10:28:45 -08:00
Revert "pinctrl: consumer: use correct retval for placeholder functions"
2015-03-05 10:08:14 +01:00
ARM: OMAP2: HSMMC: explicit fields to declare cover/card detect pin
2015-03-27 12:19:37 +01:00
power: max17042_battery: Use reg type instead of chip type
2015-04-06 17:46:27 +02:00
Merge remote-tracking branches 'regulator/topic/mode', 'regulator/topic/notifier', 'regulator/topic/palmas', 'regulator/topic/qcom' and 'regulator/topic/stw481x' into regulator-next
2015-04-10 19:16:03 +01:00
rtc: add driver for DS1685 family of real time clocks
2015-02-16 17:56:05 -08:00
soc /ti
Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/pl022', 'spi/topic/pm' and 'spi/topic/pxa2xx' into spi-next
2015-04-11 23:09:18 +01:00
sunrpc: make debugfs file creation failure non-fatal
2015-03-31 14:15:08 -04:00
Merge 4.0-rc7 into usb-next
2015-04-07 11:17:34 +02:00
uwb: Remove umc bus legacy suspend/resume support
2015-03-18 17:27:03 +01:00
libata: Implement support for sense data reporting
2015-03-27 11:59:22 -04:00
Merge branch 'getname2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-02-17 15:27:47 -08:00
Merge branch 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-02-17 16:12:34 -08:00
watchdog: bcm47xx_wdt.c: add restart handler support
2015-02-17 21:33:27 +01:00
bitmap, cpumask, nodemask: remove dedicated formatting functions
2015-02-13 21:21:39 -08:00
Merge branch 'for-3.20/core' of git://git.kernel.dk/linux-block
2015-02-12 14:13:23 -08:00
Defer processing of REQ_PREEMPT requests for blocked devices
2015-04-08 09:41:41 -07:00
block: remove unused function blk_bio_map_sg
2015-02-11 11:24:14 -07:00
clk: Add __clk_hw_set_clk helper function
2015-02-18 09:40:07 -08:00
clk: introduce clk_is_match
2015-03-11 15:56:59 -07:00
clockevents: Cleanup dead cpu explicitely
2015-04-03 08:44:37 +02:00
clocksource: Rename __clocksource_updatefreq_*() to __clocksource_update_freq_*()
2015-03-13 08:07:08 +01:00
mm/compaction: add tracepoint to observe behaviour of compaction defer
2015-02-11 17:06:04 -08:00
compiler: introduce __alias(symbol) shortcut
2015-02-13 21:21:40 -08:00
kasan: enable instrumentation of global variables
2015-02-13 21:21:42 -08:00
kasan: enable instrumentation of global variables
2015-02-13 21:21:42 -08:00
locking: Remove atomicy checks from {READ,WRITE}_ONCE
2015-03-27 09:42:01 +01:00
cpuidle: remove state_count field from struct cpuidle_device
2015-04-03 13:15:50 +02:00
bitmap, cpumask, nodemask: remove dedicated formatting functions
2015-02-13 21:21:39 -08:00
lib/halfmd4.c: simplify includes
2015-02-12 18:54:15 -08:00
VFS: Split DCACHE_FILE_TYPE into regular and special types
2015-02-22 11:38:38 -05:00
debugfs: Provide a file creation function that also takes an initial size
2015-02-17 12:21:51 -05:00
dm snapshot: suspend merging snapshot when doing exception handover
2015-02-27 14:53:16 -05:00
device: Add dev_of_node() accessor
2015-03-25 14:53:58 +01:00
include/linux/dmapool.h: declare struct device
2015-04-07 16:45:33 -07:00
x86/efi: Add a "debug" option to the efi= cmdline
2015-04-01 12:46:22 +01:00
f2fs: introduce macros to convert bytes and blocks in f2fs
2015-02-11 17:04:48 -08:00
fix mremap() vs. ioctx_kill() race
2015-04-06 17:50:59 -04:00
The updates included in this pull request for ftrace are:
2015-02-12 08:37:41 -08:00
mm/mempolicy.c: merge alloc_hugepage_vma to alloc_pages_vma
2015-02-11 17:06:04 -08:00
genirq: Provide disable_hardirq()
2015-02-18 15:08:33 +01:00
HID: hid-sensor-hub: Correct documentation
2015-02-17 13:34:44 +01:00
power_supply: Change ownership from driver to core
2015-03-13 23:15:51 +01:00
mm: numa: do not trap faults on the huge zero page
2015-02-12 18:54:08 -08:00
mm/hugetlb: take page table lock in follow_huge_pmd()
2015-02-11 17:06:01 -08:00
Merge branch 'i2c/for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2015-02-21 12:41:50 -08:00
init.h: Clean up the __setup()/early_param() macros
2015-03-05 09:23:12 +01:00
kasan: enable stack instrumentation
2015-02-13 21:21:41 -08:00
genirq: Allow the irqchip state of an IRQ to be save/restored
2015-04-08 23:28:28 +02:00
irqchip core change for v4.1 (round 3)
2015-04-11 11:17:28 +02:00
irq_work: Fix build failure when CONFIG_IRQ_WORK is not defined
2015-03-23 10:55:21 +01:00
genirq / PM: Add flag for shared NO_SUSPEND interrupt lines
2015-03-04 21:42:19 +01:00
irqflags: Fix (at least latent) code generation issue
2015-02-19 01:08:42 +01:00
jump_label: Allow jump labels to be used in assembly
2015-04-09 09:40:24 +02:00
kasan, module: move MODULE_ALIGN macro into <linux/moduleloader.h>
2015-03-12 18:46:08 -07:00
kdb: Avoid printing KERN_ levels to consoles
2015-02-19 12:39:02 -06:00
kernel.h: remove ancient __FUNCTION__ hack
2015-02-12 18:54:13 -08:00
kernfs: remove KERNFS_STATIC_NAME
2015-02-13 21:21:36 -08:00
kexec: add IND_FLAGS macro
2015-02-17 14:34:51 -08:00
KVM: x86: BSP in MSR_IA32_APICBASE is writable
2015-04-08 10:47:02 +02:00
block: fix blk_stack_limits() regression due to lcm() change
2015-03-31 09:45:50 -06:00
Merge branch 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2015-04-13 16:42:16 -07:00
memcg: reparent list_lrus and free kmemcg_id on css offline
2015-02-12 18:54:10 -08:00
list_lru: introduce per-memcg lists
2015-02-12 18:54:09 -08:00
mm: numa: do not dereference pmd outside of the lock during NUMA hinting fault
2015-02-12 18:54:08 -08:00
mm: allow page fault handlers to perform the COW
2015-02-16 17:56:03 -08:00
mm: account pmd page tables to the process
2015-02-11 17:06:04 -08:00
mm: move zone lock to a different cache line than order-0 free page lists
2015-04-07 16:45:33 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-02-17 17:41:19 -08:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching
2015-03-18 10:46:39 -07:00
kasan, module: move MODULE_ALIGN macro into <linux/moduleloader.h>
2015-03-12 18:46:08 -07:00
mutex: remove unused field "name" in debug mode
2015-02-14 11:32:59 -08:00
ipv6: protect skb->sk accesses from recursive dereference inside the stack
2015-04-06 16:12:49 -04:00
Merge branch 'for-3.20' of git://linux-nfs.org/~bfields/linux
2015-02-12 10:39:41 -08:00
NFS: Fix a regression in the read() syscall
2015-03-03 13:02:29 -05:00
NFSv4.1: Clean up bind_conn_to_session
2015-02-18 13:11:09 -08:00
watchdog: enable the new user interface of the watchdog mechanism
2015-04-14 16:48:59 -07:00
bitmap, cpumask, nodemask: remove dedicated formatting functions
2015-02-13 21:21:39 -08:00
NVMe: Fix potential corruption during shutdown
2015-02-19 16:15:37 -07:00
of: Move of_dma_configure() to device.c to help re-use
2015-03-03 14:42:56 -06:00
of: iommu: Add ptr to OF node arg to of_iommu_configure()
2015-03-03 14:42:55 -06:00
of/pci: Add of_pci_dma_configure() to update DMA configuration
2015-03-03 14:42:57 -06:00
of/platform: Fix sparc:allmodconfig build
2015-03-13 09:45:24 -05:00
oom, PM: make OOM detection in the freezer path raceless
2015-02-11 17:06:03 -08:00
mm: page_counter: pull "-1" handling out of page_counter_memparse()
2015-02-11 17:06:02 -08:00
mm/page_owner.c: remove unnecessary stack_trace field
2015-02-11 17:06:07 -08:00
PCI/ACPI: Optimize device state transition delays
2015-04-08 16:25:25 -05:00
PCI: Don't clear ASPM bits when the FADT declares it's unsupported
2015-04-09 14:20:11 -05:00
Merge branch 'pci/misc' into next
2015-04-10 08:27:18 -05:00
usb: move definition of PCI_VENDOR_ID_SYNOPSYS to linux/pci_ids.h
2015-03-10 15:33:23 -05:00
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-02-16 14:58:12 -08:00
power_supply: Add power_supply_put for decrementing device reference counter
2015-03-13 23:15:52 +01:00
hexdump: make it return number of bytes placed in buffer
2015-02-12 18:54:15 -08:00
lib/rbtree.c: fix typo in comment
2015-02-17 14:34:52 -08:00
rhashtable: remove indirection for grow/shrink decision functions
2015-02-27 16:06:02 -05:00
vfs: remove get_xip_mem
2015-02-16 17:56:03 -08:00
drivers/rtc: Provide y2038 safe rtc_class_ops.set_mmss() replacement
2015-04-03 08:18:24 +02:00
Merge branch 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2015-04-13 16:47:11 -07:00
bitmap, cpumask, nodemask: remove dedicated formatting functions
2015-02-13 21:21:39 -08:00
bitmap, cpumask, nodemask: remove dedicated formatting functions
2015-02-13 21:21:39 -08:00
locking: Remove ACCESS_ONCE() usage
2015-02-24 08:44:16 +01:00
serial: uapi: Declare all userspace-visible io types
2015-03-07 03:39:55 +01:00
vmscan: per memory cgroup slab shrinkers
2015-02-12 18:54:09 -08:00
xps: must clear sender_cpu before forwarding
2015-03-11 23:51:18 -04:00
mm: slub: add kernel address sanitizer support for slub allocator
2015-02-13 21:21:41 -08:00
slab: embed memcg_cache_params to kmem_cache
2015-02-12 18:54:09 -08:00
mm: slub: share object_err function
2015-02-13 21:21:41 -08:00
include/stddef.h: Move offsetofend() from vfio.h to a generic kernel header
2015-03-17 09:25:28 +01:00
mm/util: add kstrdup_const
2015-02-13 21:21:35 -08:00
libstring_helpers.c:string_get_size(): return void
2015-02-12 18:54:13 -08:00
PM / sleep: Re-implement suspend-to-idle handling
2015-02-13 23:49:36 +01:00
swap: remove unused mem_cgroup_uncharge_swapcache declaration
2015-02-11 17:06:00 -08:00
mm: remove remaining references to NUMA hinting bits and helpers
2015-02-12 18:54:08 -08:00
sysfs: Document struct attribute_group
2015-03-25 13:28:58 +01:00
thermal: Introduce dummy functions when thermal is not defined
2015-02-24 14:40:42 -04:00
clockevents: Cleanup dead cpu explicitely
2015-04-03 08:44:37 +02:00
time: Add timerkeeper::tkr_raw
2015-03-27 09:45:07 +01:00
time, drivers/rtc: Don't bother with rtc_resume() for the nonstop clocksource
2015-04-03 08:18:34 +02:00
linux/types.h: Always use unsigned long for pgoff_t
2015-02-12 18:54:13 -08:00
new helper: dup_iter()
2015-02-17 22:21:11 -05:00
usb: define a generic USB_RESUME_TIMEOUT macro
2015-04-07 12:58:35 -05:00
include/stddef.h: Move offsetofend() from vfio.h to a generic kernel header
2015-03-17 09:25:28 +01:00
kasan, module, vmalloc: rework shadow allocation for modules
2015-03-12 18:46:08 -07:00
staging: vme: mmap() support for vme_user
2015-03-06 17:03:22 -08:00
Merge branch 'for-3.20/drivers' of git://git.kernel.dk/linux-block
2015-02-12 14:30:53 -08:00
workqueue: dump workqueues on sysrq-t
2015-03-09 09:22:28 -04:00
fs: add dirtytime_expire_seconds sysctl
2015-03-17 12:23:32 -04:00
mm/zpool: add name argument to create zpool
2015-02-12 18:54:12 -08:00
mm/zpool: add name argument to create zpool
2015-02-12 18:54:12 -08:00
