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linux/drivers/watchdog
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Anithra P Janakiraman 7fff4beb31 watchdog: softdog.c: enhancement to optionally invoke panic instead of reboot on timer expiry 
This is needed for determining the reason for failure when a softdog
timeout occurs.

We use softdog to watch for critical application failures and at the
minimum a snapshot of the system would help to determine the cause.  In
such a scenario the application could fail but there isn't a softlockup as
such, hence the detect softlockup feature does not help.

The patch adds a module parameter soft_panic which when set to 1 causes
softdog to invoke panic instead of reboot when the softdog timer expires. 
By invoking panic we execute kdump if it is configured and the vmcore
generated by kdump should provide atleast a minimal idea of the reason for
failure.

Based on an original patch by Ken Sugawara <sugaken.r3@gmail.com>
Signed-off-by: Anithra P J <anithra@linux.vnet.ibm.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2011-03-29 11:56:22 +00:00
..
acquirewdt.c
advantechwdt.c
adx_wdt.c
alim1535_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
alim7101_wdt.c watchdog: convert to DEFINE_PCI_DEVICE_TABLE 2011-03-15 16:02:22 +00:00
ar7_wdt.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
at32ap700x_wdt.c
at91rm9200_wdt.c
at91sam9_wdt.c
ath79_wdt.c watchdog: add driver for the Atheros AR71XX/AR724X/AR913X SoCs 2011-01-12 13:51:29 +00:00
bcm47xx_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
bcm63xx_wdt.c watchdog: bcm63xx_wdt: improve platform part. 2010-12-02 14:10:16 +00:00
bfin_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
booke_wdt.c watchdog: booke_wdt: clean up status messages 2011-03-15 16:02:39 +00:00
coh901327_wdt.c
cpu5wdt.c
cpwd.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog 2011-03-17 17:09:29 -07:00
davinci_wdt.c watchdog: Convert release_resource to release_region/release_mem_region 2011-03-29 11:05:48 +00:00
ep93xx_wdt.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
eurotechwdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
f71808e_wdt.c watchdog: f71808e_wdt: Add Fintek F71869 watchdog 2011-01-12 10:23:04 +00:00
gef_wdt.c dt: Eliminate of_platform_{,un}register_driver 2011-02-28 13:22:46 -07:00
geodewdt.c
hpwdt.c watchdog: convert to DEFINE_PCI_DEVICE_TABLE 2011-03-15 16:02:22 +00:00
i6300esb.c watchdog: convert to DEFINE_PCI_DEVICE_TABLE 2011-03-15 16:02:22 +00:00
ib700wdt.c
ibmasr.c
imx2_wdt.c watchdog: imx: use clk_get to acquire the watchdog clock 2010-12-14 09:54:19 +01:00
indydog.c
intel_scu_watchdog.c watchdog: Intel SCU Watchdog Timer Driver for Moorestown and Medfield platforms. 2011-03-15 16:02:06 +00:00
intel_scu_watchdog.h watchdog: Intel SCU Watchdog Timer Driver for Moorestown and Medfield platforms. 2011-03-15 16:02:06 +00:00
iop_wdt.c
it87_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
it8712f_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
iTCO_vendor.h
iTCO_vendor_support.c
iTCO_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
ixp4xx_wdt.c
ixp2000_wdt.c
jz4740_wdt.c watchdog: jz4740_wdt - fix magic character checking 2011-03-15 16:01:57 +00:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog 2011-03-17 17:09:29 -07:00
ks8695_wdt.c watchdog: ks8695_wdt: include mach/hardware.h instead of mach/timex.h. 2011-01-12 10:24:52 +00:00
m54xx_wdt.c m68knommu: Rename m548x_wdt.c to m54xx_wdt.c 2011-02-08 15:07:45 +10:00
machzwd.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
Makefile watchdog: Xen watchdog driver 2011-03-15 16:02:18 +00:00
max63xx_wdt.c watchdog: Convert release_resource to release_region/release_mem_region 2011-03-29 11:05:48 +00:00
mixcomwd.c
mpc8xxx_wdt.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog 2011-03-17 17:09:29 -07:00
mpcore_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
mtx-1_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
mv64x60_wdt.c
nuc900_wdt.c
nv_tco.c watchdog: fix nv_tco section mismatch 2011-03-29 11:06:04 +00:00
nv_tco.h watchdog: Add TCO support for nVidia chipsets 2011-01-12 13:51:23 +00:00
octeon-wdt-main.c WATCHDOG: octeon-wdt: Use I/O clock rate for timing calculations. 2010-10-29 19:08:42 +01:00
octeon-wdt-nmi.S
omap_wdt.c Watchdog: omap_wdt: add fine grain runtime-pm 2011-03-10 22:40:05 -07:00
omap_wdt.h watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
orion_wdt.c
pc87413_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
pcwd.c
pcwd_pci.c watchdog: convert to DEFINE_PCI_DEVICE_TABLE 2011-03-15 16:02:22 +00:00
pcwd_usb.c
pika_wdt.c
pnx833x_wdt.c
pnx4008_wdt.c watchdog: Convert release_resource to release_region/release_mem_region 2011-03-29 11:05:48 +00:00
rc32434_wdt.c
rdc321x_wdt.c rdc321x-southbridge: Use mfd_data instead of driver_data 2011-03-23 10:41:57 +01:00
riowd.c dt: Eliminate of_platform_{,un}register_driver 2011-02-28 13:22:46 -07:00
s3c2410_wdt.c watchdog: s3c2410_wdt.c: Convert release_resource to release_region/release_mem_region 2011-03-29 11:05:28 +00:00
sa1100_wdt.c
sb_wdog.c
sbc60xxwdt.c
sbc7240_wdt.c
sbc8360.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
sbc_epx_c3.c Remove one to many n's in a word 2011-03-01 15:47:58 +01:00
sbc_fitpc2_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
sc520_wdt.c
sc1200wdt.c
sch311x_wdt.c watchdog: sch311x_wdt: fix printk condition 2011-03-14 10:40:21 +00:00
scx200_wdt.c
shwdt.c Merge branches 'sh/wdt', 'sh/pci-express-async' and 'common/serial-rework' into sh-latest 2011-01-26 18:24:18 +09:00
smsc37b787_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
softdog.c watchdog: softdog.c: enhancement to optionally invoke panic instead of reboot on timer expiry 2011-03-29 11:56:22 +00:00
sp805_wdt.c ARM: amba: make probe() functions take const id tables 2011-02-23 16:24:14 +00:00
sp5100_tco.c watchdog: sp5100_tco.c: Check if firmware has set correct value in tcobase. 2011-03-29 11:05:57 +00:00
sp5100_tco.h watchdog: Add support for sp5100 chipset TCO 2011-01-12 13:51:16 +00:00
stmp3xxx_wdt.c
ts72xx_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
twl4030_wdt.c
txx9wdt.c
w83627hf_wdt.c watchdog: Fix reboot on W83627ehf chipset. 2011-01-12 10:23:52 +00:00
w83697hf_wdt.c
w83697ug_wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
w83877f_wdt.c
w83977f_wdt.c
wafer5823wdt.c
wd501p.h
wdrtas.c
wdt.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
wdt285.c
wdt977.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
wdt_pci.c watchdog: cleanup spaces before tabs 2011-03-15 16:02:27 +00:00
wm831x_wdt.c
wm8350_wdt.c
xen_wdt.c watchdog: Xen watchdog driver 2011-03-15 16:02:18 +00:00