kernel.git/kernel/softlockup.c, branch linux-2.6.29.y

softlock: fix false panic which can occur if softlockup_thresh is reduced

2009-01-14T10:48:07Z

At run-time, if softlockup_thresh is changed to a much lower value, touch_timestamp is likely to be much older than the new softlock_thresh. This will cause a false softlockup to be detected. If softlockup_panic is enabled, the system will panic. The fix is to touch all watchdogs before changing softlockup_thresh. Signed-off-by: Mandeep Singh Baines Signed-off-by: Ingo Molnar

cpumask: convert rest of files in kernel/

2008-12-31T23:42:28Z

Impact: Reduce stack usage, use new cpumask API. Mainly changing cpumask_t to 'struct cpumask' and similar simple API conversion. Two conversions worth mentioning: 1) we use cpumask_any_but to avoid a temporary in kernel/softlockup.c, 2) Use cpumask_var_t in taskstats_user_cmd(). Signed-off-by: Rusty Russell Signed-off-by: Mike Travis Cc: Balbir Singh Cc: Ingo Molnar

cpumask: remove any_online_cpu() users: kernel/

2008-12-31T23:42:23Z

Impact: Remove obsolete API usage any_online_cpu() is a good name, but it takes a cpumask_t, not a pointer. There are several places where any_online_cpu() doesn't really want a mask arg at all. Replace all callers with cpumask_any() and cpumask_any_and(). Signed-off-by: Rusty Russell Signed-off-by: Mike Travis

Merge commit 'v2.6.28' into core/core

2008-12-25T12:51:46Z

check_hung_task(): unsigned sysctl_hung_task_warnings cannot be less than 0

2008-12-03T09:11:51Z

Impact: fix warnings-limit cutoff check for debug feature unsigned sysctl_hung_task_warnings cannot be less than 0 Signed-off-by: Roel Kluin Signed-off-by: Ingo Molnar

Merge branches 'core/debug', 'core/futexes', 'core/locking', 'core/rcu', 'core/signal', 'core/urgent' and 'core/xen' into core/core

2008-11-24T16:44:55Z

Make the taint flags reliable

2008-10-16T18:21:31Z

It's somewhat unlikely that it happens, but right now a race window between interrupts or machine checks or oopses could corrupt the tainted bitmap because it is modified in a non atomic fashion. Convert the taint variable to an unsigned long and use only atomic bit operations on it. Unfortunately this means the intvec sysctl functions cannot be used on it anymore. It turned out the taint sysctl handler could actually be simplified a bit (since it only increases capabilities) so this patch actually removes code. [akpm@linux-foundation.org: remove unneeded include] Signed-off-by: Andi Kleen Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'linus' into core/debug

2008-09-10T07:09:51Z

Conflicts: lib/vsprintf.c Manual merge: include/linux/kernel.h Signed-off-by: Ingo Molnar

softlockup: increase hung tasks check from 2 minutes to 8 minutes

2008-09-10T07:08:51Z

Andrew says: > Seems that about 100% of the reports we get of this warning triggering > are sys_sync, transaction commit, etc. increase the timeout. If it still triggers for people, we can kill it. Signed-off-by: Ingo Molnar

softlockup: minor cleanup, don't check task->state twice

2008-09-02T17:49:51Z

The recent commit 16d9679f33caf7e683471647d1472bfe133d858 changed check_hung_task() to filter out the TASK_KILLABLE tasks. We can move this check to the caller which has to test t->state anyway. Signed-off-by: Oleg Nesterov Acked-by: Andi Kleen Signed-off-by: Linus Torvalds