Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Ingo Molnar 82a1fcb902 softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks ... this patch extends the soft-lockup detector to automatically detect hung TASK_UNINTERRUPTIBLE tasks. Such hung tasks are printed the following way: ------------------> INFO: task prctl:3042 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message prctl D fd5e3793 0 3042 2997 f6050f38 00000046 00000001 fd5e3793 00000009 c06d8264 c06dae80 00000286 f6050f40 f6050f00 f7d34d90 f7d34fc8 c1e1be80 00000001 f6050000 00000000 f7e92d00 00000286 f6050f18 c0489d1a f6050f40 00006605 00000000 c0133a5b Call Trace: [<c04883a5>] schedule_timeout+0x6d/0x8b [<c04883d8>] schedule_timeout_uninterruptible+0x15/0x17 [<c0133a76>] msleep+0x10/0x16 [<c0138974>] sys_prctl+0x30/0x1e2 [<c0104c52>] sysenter_past_esp+0x5f/0xa5 ======================= 2 locks held by prctl/3042: #0: (&sb->s_type->i_mutex_key#5){--..}, at: [<c0197d11>] do_fsync+0x38/0x7a #1: (jbd_handle){--..}, at: [<c01ca3d2>] journal_start+0xc7/0xe9 <------------------ the current default timeout is 120 seconds. Such messages are printed up to 10 times per bootup. If the system has crashed already then the messages are not printed. if lockdep is enabled then all held locks are printed as well. this feature is a natural extension to the softlockup-detector (kernel locked up without scheduling) and to the NMI watchdog (kernel locked up with IRQs disabled). [ Gautham R Shenoy <ego@in.ibm.com>: CPU hotplug fixes. ] [ Andrew Morton <akpm@linux-foundation.org>: build warning fix. ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>		2008-01-25 21:08:02 +01:00
..
irq	genirq: revert lazy irq disable for simple irqs	2007-12-18 18:05:58 +01:00
power	driver core: make /sys/power a kobject	2008-01-24 20:40:25 -08:00
time	Driver core: change sysdev classes to use dynamic kobject names	2008-01-24 20:40:40 -08:00
.gitignore
acct.c	acct: real_parent ppid	2008-01-07 14:55:37 -08:00
audit.c	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
audit.h	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
audit_tree.c	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
auditfilter.c	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
auditsc.c	auditsc: fix kernel-doc param warnings	2007-10-22 19:40:02 -07:00
capability.c	Uninline find_pid etc set of functions	2007-10-19 11:53:41 -07:00
cgroup.c	Improve cgroup printks	2007-11-14 18:45:37 -08:00
cgroup_debug.c	Task Control Groups: simple task cgroup debug info subsystem	2007-10-19 11:53:36 -07:00
compat.c	Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt	2007-10-18 15:12:41 -07:00
configs.c
cpu.c	cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()	2008-01-25 21:08:02 +01:00
cpuset.c	cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()	2008-01-25 21:08:02 +01:00
delayacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
dma.c	whitespace fixes: DMA channel allocator	2007-10-18 14:37:24 -07:00
exec_domain.c	whitespace fixes: execution domains	2007-10-18 14:37:26 -07:00
exit.c	wait_task_stopped(): pass correct exit_code to wait_noreap_copyout()	2007-11-29 09:24:55 -08:00
extable.c
fork.c	softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks	2008-01-25 21:08:02 +01:00
futex.c	futex: Prevent stale futex owner when interrupted/timeout	2008-01-08 16:21:39 -08:00
futex_compat.c	[FUTEX] Fix address computation in compat code.	2007-11-09 16:13:08 -08:00
hrtimer.c	hrtimer: fix section mismatch	2008-01-21 19:39:41 -08:00
itimer.c	whitespace fixes: interval timers	2007-10-18 14:37:26 -07:00
kallsyms.c	FRV: fix the extern declaration of kallsyms_num_syms	2007-11-29 09:24:54 -08:00
Kconfig.hz
Kconfig.instrumentation	Tiny clean-up of OPROFILE/KPROBES configuration	2007-12-06 09:41:12 -08:00
Kconfig.preempt	Move PREEMPT_NOTIFIERS into an always-included Kconfig	2007-10-17 08:42:55 -07:00
kexec.c	vmcoreinfo: add the array length of "free_list" for filtering free pages	2008-01-08 16:10:36 -08:00
kfifo.c
kmod.c	Fix unbalanced helper_lock in kernel/kmod.c	2008-01-17 15:38:59 -08:00
kprobes.c	kprobes: support kretprobe blacklist	2007-10-16 09:43:10 -07:00
ksysfs.c	Kobject: convert remaining kobject_unregister() to kobject_put()	2008-01-24 20:40:40 -08:00
kthread.c
latency.c
lockdep.c	softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks	2008-01-25 21:08:02 +01:00
lockdep_internals.h
lockdep_proc.c	lockdep: Avoid /proc/lockdep & lock_stat infinite output	2007-10-11 22:11:11 +02:00
Makefile	revert "Task Control Groups: example CPU accounting subsystem"	2007-11-14 18:45:40 -08:00
marker.c	Linux Kernel Markers: fix marker mutex not taken upon module load	2007-11-14 18:45:40 -08:00
module.c	Kobject: convert remaining kobject_unregister() to kobject_put()	2008-01-24 20:40:40 -08:00
mutex-debug.c
mutex-debug.h
mutex.c	lockdep: fixup mutex annotations	2007-10-11 22:11:12 +02:00
mutex.h
notifier.c	Add kernel/notifier.c	2007-10-19 11:53:34 -07:00
ns_cgroup.c	cgroups: implement namespace tracking subsystem	2007-10-19 11:53:37 -07:00
nsproxy.c	pid namespaces: allow cloning of new namespace	2007-10-19 11:53:39 -07:00
panic.c	debug: add end-of-oops marker	2007-12-20 15:01:17 +01:00
params.c	Modules: remove unneeded release function	2008-01-24 20:40:39 -08:00
pid.c	pidns: Place under CONFIG_EXPERIMENTAL	2007-11-14 18:45:43 -08:00
posix-cpu-timers.c	Isolate some explicit usage of task->tgid	2007-10-19 11:53:40 -07:00
posix-timers.c	Isolate some explicit usage of task->tgid	2007-10-19 11:53:40 -07:00
printk.c	sched: remove printk_clock()	2008-01-25 21:07:59 +01:00
profile.c	sched: document profile=sleep requiring CONFIG_SCHEDSTATS	2007-10-24 18:23:50 +02:00
ptrace.c	ptrace: Call arch_ptrace_attach() when request=PTRACE_TRACEME	2008-01-25 08:31:39 +01:00
rcupdate.c	rcu: fix section mismatch	2008-01-22 09:17:48 -08:00
rcutorture.c	cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()	2008-01-25 21:08:02 +01:00
relay.c	whitespace fixes: relayfs	2007-10-18 14:37:24 -07:00
resource.c	Add IORESOUCE_BUSY flag for System RAM	2007-11-14 18:45:39 -08:00
rtmutex-debug.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
rtmutex-debug.h
rtmutex-tester.c	Driver core: change sysdev classes to use dynamic kobject names	2008-01-24 20:40:40 -08:00
rtmutex.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
rtmutex.h
rtmutex_common.h
rwsem.c	sched: mark rwsem functions as __sched for wchan/profiling	2007-12-18 15:21:13 +01:00
sched.c	softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks	2008-01-25 21:08:02 +01:00
sched_debug.c	sched: fix gcc warnings	2007-12-30 17:24:35 +01:00
sched_fair.c	sched: group scheduler, fix fairness of cpu bandwidth allocation for task groups	2008-01-25 21:08:00 +01:00
sched_idletask.c	sched: isolate SMP balancing code a bit more	2007-10-24 18:23:51 +02:00
sched_rt.c	sched: group scheduling, change how cpu load is calculated	2008-01-25 21:08:00 +01:00
sched_stats.h	sched: clean up kernel/sched_stat.h	2007-11-28 15:52:56 +01:00
seccomp.c
signal.c	sigwait eats blocked default-ignore signals	2007-11-12 16:05:23 -08:00
softirq.c	[KERNEL]: Unexport raise_softirq_irqoff	2007-10-10 16:49:18 -07:00
softlockup.c	softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks	2008-01-25 21:08:02 +01:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c	cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()	2008-01-25 21:08:02 +01:00
sys.c	x86: ignore the sys_getcpu() tcache parameter	2007-11-17 16:27:00 +01:00
sys_ni.c	[COMPAT]: Fix build on COMPAT platforms when CONFIG_NET is disabled.	2007-10-30 21:29:56 -07:00
sysctl.c	softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks	2008-01-25 21:08:02 +01:00
sysctl_check.c	sysctl: fix ax25 checks	2007-12-17 19:28:17 -08:00
taskstats.c	kernel/taskstats.c: fix bogus nlmsg_free()	2007-11-14 18:45:44 -08:00
time.c	whitespace fixes: time syscalls	2007-10-18 14:37:24 -07:00
timer.c	timer: fix section mismatch	2008-01-21 19:39:41 -08:00
tsacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
uid16.c
user.c	Kobject: convert kernel/user.c to use kobject_init/add_ng()	2008-01-24 20:40:31 -08:00
user_namespace.c	Fix user namespace exiting OOPs	2007-09-19 11:24:18 -07:00
utsname.c	Fix UTS corruption during clone(CLONE_NEWUTS)	2007-09-19 11:24:17 -07:00
utsname_sysctl.c	Isolate the UTS namespace's domainname and hostname back	2007-11-29 09:24:53 -08:00
wait.c
workqueue.c	cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()	2008-01-25 21:08:02 +01:00