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Rik van Riel 5045bcae0f sysrq: add show-backtrace-on-all-cpus function 
SysRQ-P is not always useful on SMP systems, since it usually ends up showing
the backtrace of a CPU that is doing just fine, instead of the backtrace of
the CPU that is having problems.

This patch adds SysRQ show-all-cpus(L), which shows the backtrace of every
active CPU in the system.  It skips idle CPUs because some SMP systems are
just too large and we already know what the backtrace of the idle task looks
like.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Rik van Riel <riel@redhat.com>
Randy Dunlap <randy.dunlap@oracle.com>
Cc: <lwoodman@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>
2008-04-29 08:06:03 -07:00
..
agp
agp: convert drivers/char/agp/frontend.c to use unlocked_ioctl
2008-04-26 18:43:20 +10:00
drm
drivers: atm, char fix integer as NULL pointer warnings
2008-04-28 17:29:18 -07:00
hw_random
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2008-04-21 15:57:09 -07:00
ip2
Char: ip2, fix sparse warnings
2008-04-02 15:28:19 -07:00
ipmi
drivers/char/ipmi/ipmi_msghandler.c: use LIST_HEAD instead of LIST_HEAD_INIT
2008-02-06 10:41:07 -08:00
mwave
arm/mach-integrator/time.c, mwave: revert portions of recent irq cleanups
2008-04-24 08:35:37 -04:00
pcmcia
ipwireless: remove dead code
2008-04-29 08:06:01 -07:00
rio
drivers: fix integer as NULL pointer warnings
2008-04-28 17:31:13 -07:00
tpm
drivers/char: minor irq handler cleanups
2008-04-20 19:03:43 -04:00
xilinx_hwicap
[POWERPC] char/xilinx_hwicap/ section fix
2008-04-24 20:58:02 +10:00
.gitignore
…
amiserial.c
some kmalloc/memset ->kzalloc (tree wide)
2007-07-19 10:04:50 -07:00
apm-emulation.c
Freezer: Fix APM emulation breakage
2007-11-20 22:28:20 -05:00
applicom.c
Char: applicom, use pci_match_id
2008-02-08 09:22:41 -08:00
applicom.h
…
bfin-otp.c
Blackfin char driver for Blackfin on-chip OTP memory (v3)
2008-04-25 08:04:56 +08:00
briq_panel.c
[POWERPC] Remove dead code for preventing pread() and pwrite() calls
2007-07-10 22:03:26 +10:00
cd1865.h
…
ChangeLog
…
consolemap.c
unicode diacritics support
2007-10-17 08:42:52 -07:00
cp437.uni
…
cs5535_gpio.c
drivers: fix integer as NULL pointer warnings
2008-04-28 17:31:13 -07:00
cyclades.c
Char: cyclades, fix potential NULL dereference
2007-10-23 08:32:06 -07:00
defkeymap.c_shipped
Fix default compose table initialization
2008-03-03 14:53:16 -08:00
defkeymap.map
…
digi1.h
…
digiFep1.h
…
digiPCI.h
…
ds1286.c
[CHAR] ds1286: Fix handling of seconds in RTC_ALM_SET ioctl.
2007-03-08 01:10:30 +00:00
ds1302.c
[PATCH] DS1302: local_irq_disable() is redundant after local_irq_save()
2007-02-12 09:48:30 -08:00
ds1620.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
dsp56k.c
long vs. unsigned long - low-hanging fruits in drivers
2007-10-14 12:41:51 -07:00
dtlk.c
dtlk: fix error checks in module_init()
2007-05-08 11:15:09 -07:00
efirtc.c
drivers/char/: Spelling fixes
2008-02-03 17:11:42 +02:00
epca.c
drivers/char/: Spelling fixes
2008-02-03 17:11:42 +02:00
epca.h
Char: char/serial, remove SERIAL_TYPE_NORMAL redefines
2008-02-07 08:42:33 -08:00
epcaconfig.h
…
esp.c
drivers/char/esp.c: fix bootup lockup
2008-03-07 10:05:13 -08:00
generic_nvram.c
[PATCH] mark struct file_operations const 3
2007-02-12 09:48:45 -08:00
generic_serial.c
drivers: Remove unnecessary inclusions of asm/semaphore.h
2008-04-18 22:16:32 -04:00
genrtc.c
Char: genrtc, use wait_event_interruptible
2007-07-16 09:05:44 -07:00
hangcheck-timer.c
drivers/char/: Spelling fixes
2008-02-03 17:11:42 +02:00
hpet.c
x86: revert assign IRQs to hpet timer
2008-04-04 18:36:49 +02:00
hvc_beat.c
[POWERPC] hvcbeat: Fix buffer manipulation
2008-04-17 07:46:10 +10:00
hvc_console.c
drivers/char: use LIST_HEAD instead of LIST_HEAD_INIT
2008-02-06 10:41:07 -08:00
hvc_console.h
…
hvc_iseries.c
[POWERPC] init and exit markings for hvc_iseries
2007-07-22 21:30:59 +10:00
hvc_rtas.c
[POWERPC] hvc_rtas_init() must be __init
2008-02-14 22:11:02 +11:00
hvc_vio.c
[POWERPC] Rename device_is_compatible to of_device_is_compatible
2007-05-07 20:31:14 +10:00
hvc_xen.c
xen: use the hvc console infrastructure for Xen console
2007-07-18 08:47:44 -07:00
hvcs.c
drivers/char: use LIST_HEAD instead of LIST_HEAD_INIT
2008-02-06 10:41:07 -08:00
hvsi.c
[POWERPC] Rename get_property to of_get_property: partial drivers
2007-04-27 15:51:56 +10:00
i8k.c
i8k: Inspiron E1705 fix
2008-02-07 08:42:33 -08:00
ip27-rtc.c
ip27-rtc: convert ioctl to unlocked_ioctl
2008-02-06 10:41:14 -08:00
isicom.c
drivers/char/isicom.c: correct use of ! and &
2008-03-04 16:35:15 -08:00
istallion.c
Char: istallion, remove hangup bottomhalf
2008-02-07 08:42:34 -08:00
Kconfig
make /dev/kmem a config option
2008-04-29 08:05:59 -07:00
keyboard.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2008-04-25 12:38:14 -07:00
lcd.c
[MIPS] Delete duplicate inclusion of <linux/delay.h>.
2007-08-27 02:16:59 +01:00
lcd.h
[MIPS] Add MTD device support for Cobalt
2007-02-20 17:11:55 +00:00
lp.c
Parallel port: convert port_mutex to the mutex API
2008-02-06 10:41:01 -08:00
Makefile
Blackfin char driver for Blackfin on-chip OTP memory (v3)
2008-04-25 08:04:56 +08:00
mbcs.c
MBCS: convert dmareadlock to mutex
2008-02-07 08:42:25 -08:00
mbcs.h
MBCS: convert dmareadlock to mutex
2008-02-07 08:42:25 -08:00
mem.c
make /dev/kmem a config option
2008-04-29 08:05:59 -07:00
misc.c
PM: Remove destroy_suspended_device()
2008-04-19 19:10:28 -07:00
mmtimer.c
Remove fs.h from mm.h
2007-07-29 17:09:29 -07:00
moxa.c
moxa: first pass at termios reporting
2008-02-08 09:22:24 -08:00
mspec.c
vm audit: add VM_DONTEXPAND to mmap for drivers that need it
2008-02-04 07:55:38 -08:00
mxser.c
Char: mxser, add support for CP-114UL
2008-02-07 08:42:35 -08:00
mxser.h
Char: mxser, remove it
2008-02-07 08:42:34 -08:00
n_hdlc.c
drivers: fix integer as NULL pointer warnings
2008-04-28 17:31:13 -07:00
n_r3964.c
Char: n_r3964, use wait_event_interruptible
2007-07-16 09:05:44 -07:00
n_tty.c
drivers/char/n_tty.c misannotated prototype
2008-03-30 14:20:23 -07:00
nozomi.c
fix iomem misannotations in nozomi
2008-03-30 14:20:23 -07:00
nsc_gpio.c
…
nvram.c
COBALT: remove all references to Cobalt NVRAM
2007-07-16 09:05:47 -07:00
nwbutton.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
nwbutton.h
…
nwflash.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
pc8736x_gpio.c
…
ppdev.c
[PARPORT] Remove unused 'irq' argument from parport irq functions
2007-10-23 19:53:16 -04:00
ps3flash.c
ps3: FLASH ROM Storage Driver
2007-07-21 17:49:16 -07:00
pty.c
sysctl: simplify the pty sysctl logic
2007-10-18 14:37:23 -07:00
random.c
drivers/char/random.c:write_pool() cond_resched() needed
2008-02-06 10:41:06 -08:00
raw.c
cdev: remove unneeded setting of cdev names
2007-10-12 14:51:02 -07:00
riscom8_reg.h
…
riscom8.c
char: riscom, fix rc_board indexing
2008-03-13 13:11:43 -07:00
riscom8.h
Char: riscom8, remove wakeup and hangup bottomhalves
2008-02-07 08:42:34 -08:00
rocket_int.h
drivers/char/rocket portability fixes
2008-03-19 19:42:36 -07:00
rocket.c
drivers/char/rocket portability fixes
2008-03-19 19:42:36 -07:00
rocket.h
…
rtc.c
drivers/char/rtc.c: use time_before, time_before_eq, etc
2008-04-28 08:58:17 -07:00
scc.h
…
scx200_gpio.c
…
selection.c
Kernel utf-8 handling
2007-07-16 09:05:46 -07:00
ser_a2232.c
Amiga serial driver: port_write_mutex fixup
2008-02-06 10:41:08 -08:00
ser_a2232.h
…
ser_a2232fw.ax
…
ser_a2232fw.h
…
serial167.c
Char: serial167, remove bottomhalf
2008-02-07 08:42:34 -08:00
snsc_event.c
[IA64] drivers/char/snsc_event.c:206: warning: unused variable `p'
2007-05-10 13:23:05 -07:00
snsc.c
Convert from class_device to device in drivers/char
2007-10-12 14:51:04 -07:00
snsc.h
Convert asm/semaphore.h users to linux/semaphore.h
2008-04-18 22:22:54 -04:00
sonypi.c
sonypi: Storage class should be before const qualifier
2008-04-21 22:29:37 +00:00
specialix_io8.h
Char: specialix, remove bottomhalves
2008-02-07 08:42:34 -08:00
specialix.c
drivers/char: minor irq handler cleanups
2008-04-20 19:03:43 -04:00
stallion.c
drivers/char: minor irq handler cleanups
2008-04-20 19:03:43 -04:00
sx.c
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
sx.h
Char: char/serial, remove SERIAL_TYPE_NORMAL redefines
2008-02-07 08:42:33 -08:00
sxboards.h
…
sxwindow.h
…
synclink_gt.c
synclink drivers bool conversion
2008-04-28 08:58:29 -07:00
synclink.c
synclink drivers bool conversion
2008-04-28 08:58:29 -07:00
synclinkmp.c
char: make functions static in synclinkmp.c
2008-04-28 08:58:29 -07:00
sysrq.c
sysrq: add show-backtrace-on-all-cpus function
2008-04-29 08:06:03 -07:00
tb0219.c
…
tlclk.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
toshiba.c
drivers/char/: Spelling fixes
2008-02-03 17:11:42 +02:00
tty_audit.c
tty_audit: fix checkpatch complaint
2008-02-08 09:22:25 -08:00
tty_io.c
drivers: atm, char fix integer as NULL pointer warnings
2008-04-28 17:29:18 -07:00
tty_ioctl.c
tty_ioctl: drag screaming into compliance with the coding style
2008-02-08 09:22:25 -08:00
vc_screen.c
use mutex instead of semaphore in virtual console driver
2007-05-08 11:15:33 -07:00
viocons.c
…
viotape.c
Convert from class_device to device in drivers/char
2007-10-12 14:51:04 -07:00
virtio_console.c
virtio: simplify config mechanism.
2008-02-04 23:49:57 +11:00
vme_scc.c
m68k: remove empty ->setup is several consoles
2007-07-20 08:24:49 -07:00
vr41xx_giu.c
[MIPS] Separate platform_device registration for VR41xx GPIO
2007-07-12 17:41:15 +01:00
vt_ioctl.c
add CONFIG_VT_UNICODE
2007-10-17 08:42:56 -07:00
vt.c
VT notifier extension for accessibility
2008-04-28 08:58:32 -07:00