Kernel

[2.6.35-rc1 BUG]: Calling sched_clock causes stack trace with DEBUG_PREEMPT
Hi, I get stack traces like the following: BUG: using smp_processor_id() in preemptible [00000000] code: init/1 caller is native_sched_clock+0x37/0x6d Pid: 1, comm: init Not tainted 2.6.35-rc1 #99 Call Trace: [<ffffffff811c422b>] debug_smp_processor_id+0xd3/0xec [<ffffffff81008a1e>] native_sched_clock+0x37/0... 1 Jun 2010 04:19

[tip:perf/urgent] perf-record: Check correct pid when forking
Commit-ID: 2fb750e825b5347de0390315f4284f13709a9856 Gitweb: http://git.kernel.org/tip/2fb750e825b5347de0390315f4284f13709a9856 Author: Borislav Petkov <bp(a)alien8.de> AuthorDate: Mon, 31 May 2010 23:18:18 +0200 Committer: Frederic Weisbecker <fweisbec(a)gmail.com> CommitDate: Tue, 1 Jun 2010 00:57:14 +0200 ... 1 Jun 2010 03:15

linux-next: build failure after merge of the hwpoison tree
Hi Andi, After merging the hwpoison tree, today's linux-next build (x86_64 allmodconfig) failed like this: ERROR: "PageHuge" [mm/hwpoison-inject.ko] undefined! Caused by commit 0bfc18afbf46bf2d93d55ec64501fff17067a1c2 ("HWPOISON, hugetlb: support hwpoison injection for hugepage"). I have used the hwpoison... 1 Jun 2010 04:19

[PATCH 4/5] oom-kill: give the dying task a higher priority (v4)
From: Luis Claudio R. Goncalves <lclaudio(a)uudg.org> In a system under heavy load it was observed that even after the oom-killer selects a task to die, the task may take a long time to die. Right before sending a SIGKILL to the task selected by the oom-killer this task has it's priority increased so that it can ... 1 Jun 2010 02:11

[PATCH 5/5] oom: dump_tasks() use find_lock_task_mm() too
dump_task() should have the same process iteration logic as select_bad_process(). It is needed for protecting from task exiting race. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro(a)jp.fujitsu.com> --- mm/oom_kill.c | 31 +++++++++++++------------------ 1 files changed, 13 insertions(+), 18 deletions(-) ... 1 Jun 2010 02:11

[PATCH 2/5] oom: remove warning for in mm-less task __oom_kill_process()
If the race of mm detach in task exiting vs oom is happen, find_lock_task_mm() can be return NULL. So, the warning is pointless. remove it. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro(a)jp.fujitsu.com> --- mm/oom_kill.c | 6 +----- 1 files changed, 1 insertions(+), 5 deletions(-) diff --git a/mm/oo... 1 Jun 2010 02:11

[PATCH 3/5] oom: Fix child process iteration properly
Oleg pointed out that current oom child process iterating logic is wrong. list_for_each_entry(p->children) can only see the tasks forked by p, it can't see other children forked by its sub-threads. This patch fixes it. Reported-by: Oleg Nesterov <oleg(a)redhat.com> Signed-off-by: KOSAKI Motohiro <kosak... 1 Jun 2010 02:11

module: make locking more fine-grained.
On Mon, May 31, 2010 at 09:31:42PM +0930, Rusty Russell wrote: @@ -783,9 +787,13 @@ SYSCALL_DEFINE2(delete_module, const cha /* Store the name of the last unloaded module for diagnostic purposes */ strlcpy(last_unloaded_module, mod->name, sizeof(last_unloaded_module)); ddebug_remove_module(mod->name); +... 1 Jun 2010 02:11

[RFC] lp_events: an lternitive to suspend blocker user mode and kernel API
On Tue, Jun 01, 2010 at 12:45:21AM +0200, Rafael J. Wysocki wrote: On Tuesday 01 June 2010, mark gross wrote: On Mon, May 31, 2010 at 09:57:53AM +1000, Neil Brown wrote: ... So I would suggest modifying your proposal to simply create a new 'input' device. Any driver that supports wake-from-sus... 1 Jun 2010 10:51

Add a helper function in PCI IOV to get VF device
Greetings, The motivation is make VF device visible to PF driver. PF driver may need this to access VF's PCI configuration. Another use case is in sysfs symbolic linking. Some of VF's sysfs entries are created by PF driver. For example, /sys/class/net/ethx/vfx in Intel 82576 NIC driver. Makeing a symbolic link f... 18 Jun 2010 13:33