On Sat, Sep 22, 2012 at 07:50:29PM +0200, Sasha Levin wrote:
> On 09/22/2012 05:56 PM, Paul E. McKenney wrote:
> > And now the prime suspect is the new CONFIG_RCU_USER_QS=y. Do these
> > warnings ever show up with CONFIG_RCU_USER_QS=n?
>
> It seems that disabling that does make the warnings go aw
On 09/22/12 11:10, Nicolas Pitre wrote:
On Fri, 21 Sep 2012, Cyril Chemparathy wrote:
The original phys_to_virt/virt_to_phys patching implementation relied on early
patching prior to MMU initialization. On PAE systems running out of >4G
address space, this would have entailed an additional rou
On Sun, Sep 23, 2012 at 12:11:44AM +0400, Cyrill Gorcunov wrote:
>
> > Sysfs is one value per file, you have three values here, please make 3
> > files.
> >
> > And document them in Documentation/ABI/.
>
> Hmm, sure Greg, I'll update. Thanks!
Something like below I suppose? Look, if there will b
On Sat, Sep 22, 2012 at 01:10:43PM -0700, Paul E. McKenney wrote:
> On Sat, Sep 22, 2012 at 06:42:08PM +, Paul Walmsley wrote:
> > On Fri, 21 Sep 2012, Paul E. McKenney wrote:
> >
> > > Could you please point me to a recipe for creating a minimal userspace?
> > > Just in case it is the userspa
Hi Paul
On Sat, 22 Sep 2012, Paul E. McKenney wrote:
> Strangely enough, I believe that I have inadvertently fixed this in
> my -rcu tree:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next
>
> Nevertheless, if you get a chance to try it, I would be interested to
>
On Sat, 22 Sep 2012, Paul E. McKenney wrote:
> And here is a patch. I am still having trouble reproducing the problem,
> but figured that I should avoid serializing things.
Thanks, testing this now on v3.6-rc6. One question though about the patch
description:
> All this begs the question of e
On Sat, Sep 22, 2012 at 10:25:59PM +, Paul Walmsley wrote:
> On Sat, 22 Sep 2012, Paul E. McKenney wrote:
>
> > And here is a patch. I am still having trouble reproducing the problem,
> > but figured that I should avoid serializing things.
>
> Thanks, testing this now on v3.6-rc6.
Very cool
> > Guys, you mean something like below? Look, I must admit I'm not really
> > sure if I've done all locking right, and there is no need for additional
> > kref counting on tty_struct. Could you please check if it looks more-less
> > sane (I've tested it but still...)
This still doesn't answer th
On Sat, Sep 22, 2012 at 10:20:19PM +, Paul Walmsley wrote:
> Hi Paul
>
> On Sat, 22 Sep 2012, Paul E. McKenney wrote:
>
> > Strangely enough, I believe that I have inadvertently fixed this in
> > my -rcu tree:
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/ne
On Sat, Sep 22, 2012 at 11:57:23AM -0700, Linus Torvalds wrote:
> On Fri, Sep 21, 2012 at 5:59 PM, Shaun Ruffell wrote:
> >
> > I posted patches [1,2,3] that resolve the issue for me. Shaohui Xie
> > also hit the issue and posted a slightly different patch [4]. The
> > patches are currently waitin
coccinelle warns about:
+ drivers/edac/edac_mc.c:429:9-23: ERROR: reference preceded by free on line 429
421 if (mci->csrows) {
> 422 for (chn = 0; chn < tot_channels; chn++) {
423 csr = mci->csrows[chn];
424 if (cs
On Sat, Sep 22, 2012 at 02:27:35PM -0700, Paul E. McKenney wrote:
> On Sat, Sep 22, 2012 at 07:50:29PM +0200, Sasha Levin wrote:
> > On 09/22/2012 05:56 PM, Paul E. McKenney wrote:
> > > And now the prime suspect is the new CONFIG_RCU_USER_QS=y. Do these
> > > warnings ever show up with CONFIG_RCU
On Sat, Sep 22, 2012 at 09:16:11PM +1000, Greg Ungerer wrote:
> I sent the patch to the m68k-linux list. Its been acked by Geert.
>
> http://marc.info/?l=linux-m68k&m=134742688015639&w=2
>
> I was going to push it through the m68knommu git tree, but I don't mind
> if you would rather take it wit
On Sun, Sep 23, 2012 at 01:52:32AM +0400, Cyrill Gorcunov wrote:
> On Sun, Sep 23, 2012 at 12:11:44AM +0400, Cyrill Gorcunov wrote:
> >
> > > Sysfs is one value per file, you have three values here, please make 3
> > > files.
> > >
> > > And document them in Documentation/ABI/.
> >
> > Hmm, sure
Hi Len,
On Saturday 22 September 2012 17:16:47 Len Brown wrote:
> This isn't a NAK, but I'm at best, "like warm" on this.
We had this discussion already...
And you already had similar patches Signed-off and put in your queue
for Linus in 2008:
http://www.mail-archive.com/linux-acpi@vger.kernel.org
Fix potential NULL pointer dereference in edac_unregister_sysfs() on
system boot introduced in 3.6-rc1. This patch is dependent on
Fengguang's "edac_mc: fix messy kfree calls in the error path".
Since commit 7a623c039 ("edac: rewrite the sysfs code to use struct
device") edac_mc_alloc() no longer
On 09/22/2012 09:56 AM, Mark Brown wrote:
> On Thu, Sep 20, 2012 at 04:04:57PM -0600, Stephen Warren wrote:
>
>> Mark, if this gets into 3.7, I can fix up all the Tegra .dts files during
>> 3.8.
>
> I don't know which branch you generated this against but it doesn't
> apply to any of the obvious
idle entry/exit code.
Without the bugfix patch, a boot log transcript was obtained
indicating that the idle loop was entered with tick_nohz_enabled=1
during a grace period with no callbacks present:
http://www.pwsan.com/omap/transcripts/20120922-rcu-stall-debug-pre-fix.txt
The debugging eve
I don't know where this conversation comes from but putting ptys in
sysfs in combination with the newinstance mount option is completely
broken unless the device name and device number duplication is handled,
which I don't see here.
Cyrill Gorcunov writes:
>
> Guys, you mean something like below
Hi,
better late than never..
On Monday 17 September 2012 22:38:20 Rafael J. Wysocki wrote:
> On Monday, September 17, 2012, Tejun Heo wrote:
> > powernowk8_target() runs off a per-cpu work item and if the
> > cpufreq_policy->cpu is different from the current one, it migrates the
> > kworker to th
ned
> indicating that the idle loop was entered with tick_nohz_enabled=1
> during a grace period with no callbacks present:
>
> http://www.pwsan.com/omap/transcripts/20120922-rcu-stall-debug-pre-fix.txt
>
> The debugging events started to appear at 1.867370 seconds into the
>
On Sat, 22 Sep 2012, Paul E. McKenney wrote:
> Very cool, thank you for your testing efforts!!!
You're welcome.
> May I apply your Tested-by to this patch?
Please do:
Tested-by: Paul Walmsley # OMAP4430
Am testing on OMAP3730 (single-core) now.
- Paul
--
To unsubscribe from this list: sen
This is the restart of an old conversation that started out with Serge
noting that there are problems taking advantage of the devpts newinstance
mount option. As the conversation progressed it was suggested that the
devpts newinstance mount option should just be removed if possible.
Then the conv
This compile option just makes the code more complicated and makes
it more difficult to transition to a time when we take advantage
of the new features that DEVPTS_MULTIPLE_INSTANCES allows.
Acked-by: "Serge E. Hallyn"
Signed-off-by: "Eric W. Biederman"
---
Documentation/filesystems/devpts.txt
These are difference instances of the same device not so it only
makes sense that they would have the same default permissions.
Move the definitions of DEVPTS_DEEFAULT_PTMX_MODE and PTM_MINOR
into devpts_fs.h so we can use the same definitions throughout.
Acked-by: "Serge E. Hallyn"
Signed-off-
- Modify opening /dev/ptmx so that it opens /dev/pts/ptmx
As it appares nearly impossible to get udev to create a symlink
do this with a little sprinkle of in kernel magic.
- Cleanup the devpts mount code and only leave the code for
new instance.
Tested on debian and ubuntu without any prob
Document the updated state of devpts.
Signed-off-by: "Eric W. Biederman"
---
Documentation/filesystems/devpts.txt | 88 -
1 files changed, 22 insertions(+), 66 deletions(-)
diff --git a/Documentation/filesystems/devpts.txt
b/Documentation/filesystems/devpts.t
On Sat, Sep 22, 2012 at 08:50:44PM -0700, Eric W. Biederman wrote:
> +struct inode *devpts_redirect(struct file *filp)
> +{
> + struct inode *inode;
> + struct file *filp2;
> +
> + /* Is the inode already a devpts inode? */
> + inode = filp->f_dentry->d_inode;
> + if (filp->f_d
> +config ACPI_INITRD_TABLE_OVERRIDE
> + bool
> + default y
Do distros in addition to SuSE concur they want to ship this way?
The last time we tried to make debugging easier we added
ACPI_CUSTOM_METHOD, which allowed root to over-ride an AML method
on a running system. Distro securit
Here is my ACPICA branch queued for Linux-3.7
Please let me know if you see troubles with any of them.
Note that the acpidump utility is also in here.
Since it lost its home on kernel.org in pmtools,
and it depends on kernel headers, it seemed to
make sense to put it here. Yes, it is a bit dusty
From: Len Brown
This is unchanged version 20070714, plus a small bit in
DEFINE_ALTERNATE_TYPES to enable building with latest kernel headers.
Signed-off-by: Len Brown
---
tools/power/acpi/Makefile | 7 ++-
tools/power/acpi/acpidump.c | 127 ++--
2 fi
From: Bob Moore
Version 20120913.
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Len Brown
---
include/acpi/acpixf.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 03457a9..267bfc4 100644
--- a/include/
From: Feng Tang
acpi_get_physical_device_location()'s 2nd argument has been changed
in ACPI implementaion, so need a follow-on change in
usb_acpi_check_pld().
Signed-off-by: Feng Tang
Signed-off-by: Bob Moore
Cc: Matthew Garrett
Cc: Greg Kroah-Hartman
Cc: Lan Tianyu
Signed-off-by: Len Brown
From: Bob Moore
Add values 5 (CMCI) and 6 (MCE).
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Len Brown
---
include/acpi/actbl1.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index c41d6f9..280fc45 100
From: Lv Zheng
Merge/remove duplicate code in the root table resize functions
One function is external, the other is internal. Lv Zheng,
ACPICA BZ 846:
https://acpica.org/bugzilla/show_bug.cgi?id=846
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Len Brown
---
drivers/acpi
From: Bob Moore
These tables are defined outside of the ACPI specification.
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
include/acpi/actbl2.h | 111 ++
include/acpi/actbl3.h | 1 -
2 files changed, 111 inser
From: Bob Moore
_PLD (Physical Location of Device) returns a bit-packed buffer that
is difficult to parse. This change adds a new interface,
AcpiDecodePldBuffer that parses the buffer into a more usable
local struct. Also adds macros to both get and set individual
fields within the packed _PLD bu
From: Bob Moore
Added structs for the buffers related to these predefined names,
in acbuffer.h
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
include/acpi/acbuffer.h | 43 +++
1 file changed, 43 insertions(+)
diff --git
From: Bob Moore
Version 20120816.
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
include/acpi/acpixf.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 270517d..03457a9 100644
--- a/include
From: Feng Tang
This patch is on top of the ACPICA 20120816 release, which implemented
a native way to decode PLD buffer, so use it instead of leting upper
level users do the decoding.
v2: Modify the check for PLD buffer length to reject buffers whose
length < 16
Signed-off-by: Feng Tang
Signe
From: Feng Tang
The gpe_register_info argument is no longer needed, reduce it to
make code simpler.
Signed-off-by: Feng Tang
Signed-off-by: Bob Moore
Signed-off-by: Len Brown
---
drivers/acpi/acpica/achware.h | 3 +--
drivers/acpi/acpica/evgpe.c | 3 +--
drivers/acpi/acpica/evxfgpe.c |
From: Bob Moore
No functional change.
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
include/acpi/actbl.h | 48
1 file changed, 24 insertions(+), 24 deletions(-)
diff --git a/include/acpi/actbl.h b/include/acpi
From: Bob Moore
This change adds a new _OSI string, "Windows 2012" for both Windows 8
and Windows Server 2012.
>From Microsoft document "How to Identify the Windows Version in ACPI
by Using _OSI", July 13, 2012.
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
From: Bob Moore
Add additional debug info to assist with GPE debugging.
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
drivers/acpi/acpica/evgpe.c | 21 +++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/acpica/ev
From: Bob Moore
Cleanup output for Processor(). Length is a byte, not a word.
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
drivers/acpi/acpica/nsdump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers
From: Len Brown
Signed-off-by: Len Brown
---
tools/power/acpi/Makefile | 4 +++
tools/power/acpi/acpidump.8 | 59 +
2 files changed, 63 insertions(+)
create mode 100644 tools/power/acpi/acpidump.8
diff --git a/tools/power/acpi/Makefile b/tools/po
From: Len Brown
This is unchanged version 20101221, plus a small bit in
DEFINE_ALTERNATE_TYPES to enable building with latest kernel headers.
This version finds dynamic tables exported by Linux in
/sys/firmware/acpi/tables/dynamic
Signed-off-by: Len Brown
---
tools/power/acpi/acpidump.c | 187
From: Len Brown
This is unchanged version 20071116, plus a small bit in
DEFINE_ALTERNATE_TYPES to enable building with latest kernel headers.
Signed-off-by: Len Brown
---
tools/power/acpi/acpidump.c | 7 +--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/tools/power/acpi/acp
From: Feng Tang
This is a follow on for commmit 3f6f49c7 "ACPI: delete _GTS/_BFS support"
to do more cleanup.
Signed-off-by: Feng Tang
Signed-off-by: Bob Moore
Signed-off-by: Len Brown
---
drivers/acpi/acpica/hwxfsleep.c | 1 -
include/acpi/acnames.h | 2 --
include/acpi/actypes.h
From: Bob Moore
Allows constructs like this:
If ()
Scope (\)
...
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
drivers/acpi/acpica/dswload.c | 14 ++
drivers/acpi/acpica/dswload2.c | 14 ++
2 files changed, 28
From: Bob Moore
Split utxface.c to improve modularity and reduce file size.
Signed-off-by: Bob Moore
Signed-off-by: Feng Tang
Signed-off-by: Len Brown
---
drivers/acpi/acpica/Makefile | 1 +
drivers/acpi/acpica/utxface.c | 267 +-
drivers/acpi/acpica/utxf
From: Len Brown
This is unchanged version 20060606, plus a small bit in
DEFINE_ALTERNATE_TYPES to enable building with latest kernel headers.
Signed-off-by: Len Brown
---
tools/power/acpi/acpidump.c | 97 +++--
1 file changed, 59 insertions(+), 38 deleti
From: Len Brown
This is unchanged version 2005, plus a small bit in
DEFINE_ALTERNATE_TYPES to enable building with latest kernel headers.
Signed-off-by: Len Brown
---
tools/power/acpi/Makefile | 15 ++
tools/power/acpi/acpidump.c | 472
2 fil
On Sun, Sep 23, 2012 at 05:19:06AM +0100, Al Viro wrote:
> On Sat, Sep 22, 2012 at 08:50:44PM -0700, Eric W. Biederman wrote:
>
> > +struct inode *devpts_redirect(struct file *filp)
> > +{
> > + struct inode *inode;
> > + struct file *filp2;
> > +
> > + /* Is the inode already a devpts inode
On 09/23/2012 02:21 AM, Paul E. McKenney wrote:
> On Sat, Sep 22, 2012 at 02:27:35PM -0700, Paul E. McKenney wrote:
>> On Sat, Sep 22, 2012 at 07:50:29PM +0200, Sasha Levin wrote:
>>> On 09/22/2012 05:56 PM, Paul E. McKenney wrote:
And now the prime suspect is the new CONFIG_RCU_USER_QS=y. Do
Randy Dunlap wrote:
> On 09/20/2012 09:05 AM, halfdog wrote:
>
>> halfdog wrote:
>>
>> Now this is the updated and also tested patch (vs. linux-3.5.4 kernel) to fix
>> https://bugzilla.kernel.org/show_bug.cgi?id=46841 . See also
>> http://www.halfdog.net/Security/2012/LinuxKernelBinfmtScriptStackD
On Sun, Sep 23, 2012 at 12:34:02AM -0400, Len Brown wrote:
> From: Feng Tang
>
> acpi_get_physical_device_location()'s 2nd argument has been changed
> in ACPI implementaion, so need a follow-on change in
> usb_acpi_check_pld().
>
> Signed-off-by: Feng Tang
> Signed-off-by: Bob Moore
> Cc: Matt
Al Viro writes:
> On Sat, Sep 22, 2012 at 08:50:44PM -0700, Eric W. Biederman wrote:
>
>> +struct inode *devpts_redirect(struct file *filp)
>> +{
>> +struct inode *inode;
>> +struct file *filp2;
>> +
>> +/* Is the inode already a devpts inode? */
>> +inode = filp->f_dentry->d_inod
Hi,
a long time ago i reported an ugly soft lock of heavy loaded opteron system
without usable backtraces :(
recently, i've logged on 3.4.6 via serial console backtraces from all 16 cores
which show some kind
of vfs lock (http://pluto.agmk.net/kernel/oops.txt). this lock occurs on heavy
loaded
On Sat, Sep 22, 2012 at 10:59:04PM -0700, Eric W. Biederman wrote:
> The test:
> >> + if (filp->f_vfsmnt->mnt_root == filp->f_dentry)
> kicks in and no redirection is performed.
Umm... OK, after the first round of recursion. Unless you bind /something/pts
on /something. Or simply create a sym
On Sun, Sep 23, 2012 at 07:30:38AM +0100, Al Viro wrote:
> On Sat, Sep 22, 2012 at 10:59:04PM -0700, Eric W. Biederman wrote:
>
> > The test:
> > >> +if (filp->f_vfsmnt->mnt_root == filp->f_dentry)
> > kicks in and no redirection is performed.
>
> Umm... OK, after the first round of recu
On Sat, Sep 22, 2012 at 06:09:53PM -0700, Greg Kroah-Hartman wrote:
> On Sun, Sep 23, 2012 at 01:52:32AM +0400, Cyrill Gorcunov wrote:
> > On Sun, Sep 23, 2012 at 12:11:44AM +0400, Cyrill Gorcunov wrote:
> > >
> > > > Sysfs is one value per file, you have three values here, please make 3
> > > > fi
On Sat, Sep 22, 2012 at 06:43:37PM -0700, Eric W. Biederman wrote:
>
> I don't know where this conversation comes from but putting ptys in
> sysfs in combination with the newinstance mount option is completely
> broken unless the device name and device number duplication is handled,
> which I don'
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