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Ingo Molnar 8446f1d391 [PATCH] detect soft lockups 
This patch adds a new kernel debug feature: CONFIG_DETECT_SOFTLOCKUP.

When enabled then per-CPU watchdog threads are started, which try to run
once per second.  If they get delayed for more than 10 seconds then a
callback from the timer interrupt detects this condition and prints out a
warning message and a stack dump (once per lockup incident).  The feature
is otherwise non-intrusive, it doesnt try to unlock the box in any way, it
only gets the debug info out, automatically, and on all CPUs affected by
the lockup.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
History 2005-09-07 16:57:17 -07:00
..
alpha [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00
arm [ARM] 2882/1: pxa2xx_sharpsl: Update PCMCIA driver to support variety of new hardware 2005-09-05 20:49:54 +01:00
arm26 [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00
cris [PATCH] arch/cris/Kconfig.debug: use lib/Kconfig.debug 2005-09-05 00:06:19 -07:00
frv [PATCH] frv: Remove export of strtok() 2005-09-05 00:06:01 -07:00
h8300 [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00
i386 [PATCH] detect soft lockups 2005-09-07 16:57:17 -07:00
ia64 [PATCH] x86/x86_64: deferred handling of writes to /proc/irqxx/smp_affinity 2005-09-07 16:57:15 -07:00
m32r [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00
m68k [PATCH] m68k: cleanup inline mem functions 2005-09-05 00:06:19 -07:00
m68knommu Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild 2005-09-06 00:35:51 -07:00
mips Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild 2005-09-06 00:35:51 -07:00
parisc [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00
ppc [PATCH] ppc32: fix ocp_device_suspend to use pm_message_t instead of u32 2005-09-07 16:57:15 -07:00
ppc64 [PATCH] remove linux/version.h include from arch/ppc64 2005-09-06 16:57:46 +10:00
s390 [PATCH] s390: compat system calls 2005-09-05 00:06:29 -07:00
sh [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00
sh64 [PATCH] arch/sh64/Kconfig: doesn't need it's own LOG_BUF_SHIFT 2005-09-05 00:06:09 -07:00
sparc [SPARC]: Kill io_remap_page_range() 2005-09-01 21:51:26 -07:00
sparc64 [SPARC64]: Don't include drivers/firmware/Kconfig 2005-09-05 23:34:13 -07:00
um [PATCH] uml: fix x86_64 page leak 2005-09-05 00:06:24 -07:00
v850 [PATCH] v850: Add show_mem 2005-09-02 00:57:31 -07:00
x86_64 [PATCH] detect soft lockups 2005-09-07 16:57:17 -07:00
xtensa [PATCH] convert signal handling of NODEFER to act like other Unix boxes. 2005-08-29 10:03:11 -07:00