On Tuesday 20 August 2013 11:08 AM, ujhely...@gmail.com wrote:
> From: Matus Ujhelyi
>
> Some phy's can be configured to enable wake on lan (e.g. at803x or marvell
> 88E1318S).
> There is no way how to enable wol on CPSW with such connected phys. This patch
> adds this support. It is provided by
On Tue, Aug 20, 2013 at 10:55:40AM +0530, Arun KS wrote:
> >From 932a134abeac597f18c86c513704709ad154994b Mon Sep 17 00:00:00 2001
> From: Arun KS
> Date: Mon, 19 Aug 2013 12:06:33 +0530
> Subject: seq_file: Fix overflow condition in seq_commit
>
> seq_path()/seq_commit() is treating a d_path()
On 08/20/2013 01:30 PM, Cyrill Gorcunov wrote:
> On Tue, Aug 20, 2013 at 11:56:15AM +0800, Chen Gang wrote:
>> For the implementation (patch 1/3), need fill buffer as full as
>> possible when buffer space is not enough.
>>
>> For the caller (patch 2/3, 3/3), need check the return value of
>>
From: Matus Ujhelyi
Some phy's can be configured to enable wake on lan (e.g. at803x or marvell
88E1318S).
There is no way how to enable wol on CPSW with such connected phys. This patch
adds this support. It is provided by calling the phy's related code.
Tested on board with at8030x connected
On Tue, Aug 20, 2013 at 11:56:15AM +0800, Chen Gang wrote:
> For the implementation (patch 1/3), need fill buffer as full as
> possible when buffer space is not enough.
>
> For the caller (patch 2/3, 3/3), need check the return value of
> mpol_to_str().
>
> Signed-off-by: Chen Gang
Won't
- Original Nachricht
Von: Greg Kroah-Hartman
An: Stefan Achatz
Datum: 15.08.2013 18:40
Betreff: Re: [PATCH 35/36] hid: roccat: convert class code to use bin_attrs
in groups
> On Thu, Aug 15, 2013 at 06:03:46PM +0200, Stefan Achatz wrote:
> > Hello Greg,
> > looking through
Hi Peter,
Thank you for the clarification.
On 08/19/2013 04:00 PM, Peter Zijlstra wrote:
> On Mon, Aug 19, 2013 at 09:47:47AM +0530, Preeti U Murthy wrote:
>> Hi Peter,
>>
>> On 08/16/2013 03:42 PM, Peter Zijlstra wrote:
>>
>> I have a few comments and clarification to seek.
>>
>> 1. How are you
[ 24.990076] [ INFO: possible circular locking dependency detected ]
[ 24.990086] 3.11.0-rc6+ #154 Not tainted
[ 24.990094] ---
[ 24.990103] crda/1159 is trying to acquire lock:
[ 24.990111] (genl_mutex){+.+.+.}, at: []
>From 932a134abeac597f18c86c513704709ad154994b Mon Sep 17 00:00:00 2001
From: Arun KS
Date: Mon, 19 Aug 2013 12:06:33 +0530
Subject: seq_file: Fix overflow condition in seq_commit
seq_path()/seq_commit() is treating a d_path() failure as an overflow
condition, but it isn't.
seq_read handles
There is a corener case when no peripheral irqs route to secondary
cores.
Let's take dual core system for example, the sequence is as following:
Core 0 Core1
1. set waiting bit and enter waiting loop
2. set waiting bit and
Hi Andrew,
On Tue, Aug 20, 2013 at 4:35 AM, Andrew Morton
wrote:
> On Mon, 19 Aug 2013 17:02:37 +0530 Arun KS wrote:
>
>> seq_path()/seq_commit() is treating a d_path() failure as an overflow
>> condition, but it isn't.
>
> This is too brief. When fixing a bug please always describe the
>
On Friday 16 August 2013 10:37 PM, Lad, Prabhakar wrote:
> From: "Lad, Prabhakar"
>
> Add ethernet device tree node information and pinmux for mii to da850 by
> providing interrupt details and local mac address.
>
> Signed-off-by: Lad, Prabhakar
Queuing this for v3.12
Thanks,
Sekhar
--
To
Hi Greg,
On 08/19/2013 08:27 PM, greg Kroah-Hartman wrote:
> On Mon, Aug 19, 2013 at 09:08:49AM +, Vineet Gupta wrote:
>> Hi Greg,
>>
>> I'd posted these patches for stable backport. Do I need to do anything more
>> to get them included.
>>
>> https://patchwork.kernel.org/patch/2841153/
On 08/20/2013 01:09 PM, Joe Perches wrote:
> On Tue, 2013-08-20 at 11:38 +0800, Chen Gang wrote:
>> Need check the return value of proc_put_char(), just like another have
>> done in __do_proc_doulongvec_minmax().
>>
>> Signed-off-by: Chen Gang
>> ---
>> kernel/sysctl.c |5 -
>> 1 files
On Tue, 2013-08-20 at 11:38 +0800, Chen Gang wrote:
> Need check the return value of proc_put_char(), just like another have
> done in __do_proc_doulongvec_minmax().
>
> Signed-off-by: Chen Gang
> ---
> kernel/sysctl.c |5 -
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff
On Mon, Aug 19, 2013 at 09:28:32PM -0700, Paul E. McKenney wrote:
> On Mon, Aug 19, 2013 at 08:24:11PM -0700, Josh Triplett wrote:
> > On Mon, Aug 19, 2013 at 07:37:17PM -0700, Paul E. McKenney wrote:
> > > Hello!
> > >
> > > This series provides a few documentation updates:
> > >
> > > 1.
On 2013-08-20 2:28 AM, Greg Kroah-Hartman wrote:
> On Tue, Aug 20, 2013 at 08:26:11AM +0800, Tom Gundersen wrote:
>> On Tue, Aug 20, 2013 at 8:03 AM, Greg Kroah-Hartman
>> wrote:
>> > On Tue, Aug 20, 2013 at 07:59:47AM +0800, Tom Gundersen wrote:
>> >> Hi guys,
>> >>
>> >> Starting with 3.10.6
On 08/20/2013 12:43 PM, Chen Gang wrote:
> On 08/20/2013 12:18 PM, Paul E. McKenney wrote:
>> On Tue, Aug 20, 2013 at 11:51:23AM +0800, Chen Gang wrote:
>>>
>>>
>>> If 'hc' is false, 'al' will never be false, either (only need check
>>> "irdp->qlen != rdp->qlen_lazy' when 'rdp->nxtlist'
On 08/20/2013 12:18 PM, Paul E. McKenney wrote:
> On Tue, Aug 20, 2013 at 11:51:23AM +0800, Chen Gang wrote:
>>
>>
>> If 'hc' is false, 'al' will never be false, either (only need check
>> "irdp->qlen != rdp->qlen_lazy' when 'rdp->nxtlist' existance).
>>
>> Recommend to improve the related code,
On Tue, Aug 20, 2013 at 7:18 AM, Dave Jones wrote:
>
> btw, anyone have thoughts on a patch something like below ?
And another(sorry if message is reformatted by the mail agent,
and it took my an hour to get the agent back to the correct format but failed,
and thanks a lot for any howto send
On 08/20/2013 12:10 PM, Paul E. McKenney wrote:
> On Tue, Aug 20, 2013 at 11:50:02AM +0800, Chen Gang wrote:
>> According to the comment above rcu_cpu_has_callbacks(): "If there are
>> no callbacks, all of them are deemed to be lazy".
>>
>> So when both 'hc' and 'al' are false, '*all_lazy' should
On Mon, Aug 19, 2013 at 08:24:11PM -0700, Josh Triplett wrote:
> On Mon, Aug 19, 2013 at 07:37:17PM -0700, Paul E. McKenney wrote:
> > Hello!
> >
> > This series provides a few documentation updates:
> >
> > 1. Update rcu_barrier() documentation to note that it no longer is
> > guaranteed
On Mon, Aug 12, 2013 at 12:22:26PM +0200, Sascha Hauer wrote:
> of_property_read_bool properly compiles away, no need to ifdef this
> for non DT builds.
>
> Signed-off-by: Sascha Hauer
Pushed only this one to l2-mtd.git, since it's independent.
Thanks,
Brian
--
To unsubscribe from this list:
Hello Seth,
On Fri, Aug 16, 2013 at 05:00:34PM -0500, Seth Jennings wrote:
> On Wed, Aug 14, 2013 at 02:55:34PM +0900, Minchan Kim wrote:
> > This patch moves zsmalloc under zram directory because there
> > isn't any other user any more.
> >
> > Before that, description will explain why we have
On Mon, Aug 19, 2013 at 10:42:26AM +0200, Sascha Hauer wrote:
> On Sat, Aug 17, 2013 at 01:17:02PM -0700, Brian Norris wrote:
> > On Mon, Aug 12, 2013 at 12:22:24PM +0200, Sascha Hauer wrote:
> > > This patch adds a flag to struct flash_info indicating that
> > > fast_read is not supported. This
On Tue, Aug 20, 2013 at 11:51:23AM +0800, Chen Gang wrote:
>
>
> If 'hc' is false, 'al' will never be false, either (only need check
> "irdp->qlen != rdp->qlen_lazy' when 'rdp->nxtlist' existance).
>
> Recommend to improve the related code, like the diff below.
Are you sure that this
On Mon, Aug 19, 2013 at 9:08 PM, Dave Chinner wrote:
> On Mon, Aug 19, 2013 at 08:28:20PM -0700, Andy Lutomirski wrote:
>> On Mon, Aug 19, 2013 at 7:36 PM, Dave Chinner wrote:
>> > On Fri, Aug 16, 2013 at 04:22:10PM -0700, Andy Lutomirski wrote:
>> >> Filesystems that defer cmtime updates should
On Tue, Aug 20, 2013 at 11:50:02AM +0800, Chen Gang wrote:
> According to the comment above rcu_cpu_has_callbacks(): "If there are
> no callbacks, all of them are deemed to be lazy".
>
> So when both 'hc' and 'al' are false, '*all_lazy' should be true, not
> false.
If there are no callbacks,
On Mon, Aug 19, 2013 at 08:30:02PM -0700, Andy Lutomirski wrote:
> On Mon, Aug 19, 2013 at 7:38 PM, Dave Chinner wrote:
> > On Fri, Aug 16, 2013 at 04:22:12PM -0700, Andy Lutomirski wrote:
> >> A fancier implementation could probably avoid an extra journal
> >> transaction by adding a
On Mon, Aug 19, 2013 at 08:28:20PM -0700, Andy Lutomirski wrote:
> On Mon, Aug 19, 2013 at 7:36 PM, Dave Chinner wrote:
> > On Fri, Aug 16, 2013 at 04:22:10PM -0700, Andy Lutomirski wrote:
> >> Filesystems that defer cmtime updates should update cmtime when any
> >> of these events happen after a
On Mon, Aug 19, 2013 at 8:33 PM, Dave Chinner wrote:
> On Mon, Aug 19, 2013 at 08:20:12PM -0700, Andy Lutomirski wrote:
>> On Mon, Aug 19, 2013 at 7:28 PM, Dave Chinner wrote:
>> > On Fri, Aug 16, 2013 at 04:22:09PM -0700, Andy Lutomirski wrote:
>> >> This is like file_update_time, except that
On Mon, Aug 19, 2013 at 02:16:36PM -0700, Linus Torvalds wrote:
> On Mon, Aug 19, 2013 at 1:29 PM, Christoph Lameter wrote:
> > On Mon, 19 Aug 2013, Simon Kirby wrote:
> >
> >>[... ] The
> >> alloc/free traces are always the same -- always alloc_pipe_info and
> >> free_pipe_info. This is
Hi All,
Anybody help me review this?
Thanks,
LiWang.
On 08/14/2013 10:20 AM, Li Wang wrote:
When cpuidle_idle_call() return 0, it shows that linux system is using
idle framwork driver. Now, local irq has already been enabled in
cpuidle_idle_call(). So, it need not enable local irq again, when
Hi Thierry,
On 8/20/2013 05:20, Thierry Reding wrote:
On Mon, Aug 19, 2013 at 11:11:06AM +0800, Bo Shen wrote:
add atmel pwm controller driver based on PWM framework
this is basic function implementation of pwm controller
it can work with pwm based led and backlight
Please use the proper
mpol_to_str() may fail, and not fill the buffer (e.g. -EINVAL), so need
check about it, or buffer may not be zero based, and next seq_printf()
will cause issue.
Also print related warning when the buffer space is not enough.
Signed-off-by: Chen Gang
---
mm/shmem.c | 15 ++-
1
mpol_to_str() may fail, and not fill the buffer (e.g. -EINVAL), so need
check about it, or buffer may not be zero based, and next seq_printf()
will cause issue.
Also print related warning when the buffer space is not enough.
Signed-off-by: Chen Gang
---
fs/proc/task_mmu.c | 16
Need still try to fill buffer as full as possible if the buffer space
is not enough, commonly, the caller can bear of it (e.g. print warning
and still continue).
Signed-off-by: Chen Gang
---
mm/mempolicy.c | 14 ++
1 files changed, 10 insertions(+), 4 deletions(-)
diff --git
For the implementation (patch 1/3), need fill buffer as full as
possible when buffer space is not enough.
For the caller (patch 2/3, 3/3), need check the return value of
mpol_to_str().
Signed-off-by: Chen Gang
---
fs/proc/task_mmu.c | 16 ++--
mm/mempolicy.c | 14
On Tue, 2013-08-20 at 04:18 +0100, Al Viro wrote:
> On Wed, Aug 14, 2013 at 04:42:14PM -0600, Bjorn Helgaas wrote:
> > [+cc Al, linux-fsdevel for fdget/fdput usage]
>
> fdget/fdput use looks sane, the only thing is that I would rather
> have an explicit include of linux/file.h instead of relying
If 'hc' is false, 'al' will never be false, either (only need check
"irdp->qlen != rdp->qlen_lazy' when 'rdp->nxtlist' existance).
Recommend to improve the related code, like the diff below.
--diff begin
diff --git
According to the comment above rcu_cpu_has_callbacks(): "If there are
no callbacks, all of them are deemed to be lazy".
So when both 'hc' and 'al' are false, '*all_lazy' should be true, not
false.
Signed-off-by: Chen Gang
---
kernel/rcutree.c |2 +-
1 files changed, 1 insertions(+), 1
If this patch is correct, better to let CPU_ONLINE and CPU_DOWN_FAILED
share the same code.
And do we need a comment "/* fall through */" between CPU_UP_CANCELED
and CPU_DOWN_FAILED (or it is another bug, need a 'break' statement) ?
At last, also better to let CPU_DOWN_PREPARE and
When failure occures, __padata_add_cpu() and __padata_remove_cpu() will
return -ENOMEM, which need be noticed in any cases (even in cleaning up
cases).
Signed-off-by: Chen Gang
---
kernel/padata.c |8 ++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/kernel/padata.c
As the up/down_read_non_owner() API has been brought back from the
dead, and has a single user (bcache), this module now breaks -rt, as
-rt has no API for non owner rwsems.
Now I looked at the code for bcache, and I don't see a way to fix it.
Perhaps there is, but I don't see it. Thus, I decided
In related functions, they have already had tag 'free', so use 'goto'
instead of 'break' to keep one (not multiple) style in each function.
Also remove useless checking 'err' code or move it to related 'if' code
block.
Signed-off-by: Chen Gang
---
kernel/sysctl.c | 25
Need check the return value of proc_put_char(), just like another have
done in __do_proc_doulongvec_minmax().
Signed-off-by: Chen Gang
---
kernel/sysctl.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 7822cd8..ee00986 100644
Patch 1 for bug fix: check return value after call proc_put_char() in
__do_proc_doulongvec_minmax()
Patch 2 for simplify code : Simplify code for C code readers.
Signed-off-by: Chen Gang
---
kernel/sysctl.c | 30 +-
1 files changed, 17 insertions(+), 13
On Tue Aug 20 13, Rafael J. Wysocki wrote:
> On Monday, August 19, 2013 04:35:29 PM Jerry Snitselaar wrote:
> > On Tue Aug 20 13, Rafael J. Wysocki wrote:
> > > On Monday, August 19, 2013 09:16:14 AM Mika Westerberg wrote:
> > > > On Fri, Aug 16, 2013 at 06:26:35PM -0700, Jerry Snitselaar wrote:
>
On Mon, Aug 19, 2013 at 08:20:12PM -0700, Andy Lutomirski wrote:
> On Mon, Aug 19, 2013 at 7:28 PM, Dave Chinner wrote:
> > On Fri, Aug 16, 2013 at 04:22:09PM -0700, Andy Lutomirski wrote:
> >> This is like file_update_time, except that it acts on a struct inode *
> >> instead of a struct file *.
On Mon, Aug 19, 2013 at 7:38 PM, Dave Chinner wrote:
> On Fri, Aug 16, 2013 at 04:22:12PM -0700, Andy Lutomirski wrote:
>> A fancier implementation could probably avoid an extra journal
>> transaction by adding a mapping_test_clear_cmtime call in
>> ext4_writepages, but this should already be a
On Mon, Aug 19, 2013 at 7:36 PM, Dave Chinner wrote:
> On Fri, Aug 16, 2013 at 04:22:10PM -0700, Andy Lutomirski wrote:
>> Filesystems that defer cmtime updates should update cmtime when any
>> of these events happen after a write via a mapping:
>>
>> - The mapping is written back to disk. This
xics_init() assumes kvm->nrcpus is already setup. kvm->nrcpus is setup
in kvm_cpu_init()
Unfortunately xics_init() and kvm_cpu_init() both use base_init(). So
depending on the order randomly determined by the compiler, xics_init()
may initialised see kvm->nrcpus as 0 and not setup any of the
On Mon, Aug 19, 2013 at 07:51:10PM -0700, Paul E. McKenney wrote:
> From: "Paul E. McKenney"
>
> This commit adds a object_debug option to rcutorture to allow the
> debug-object-based checks for duplicate call_rcu() invocations to
> be deterministically tested.
>
> Signed-off-by: Paul E.
On Mon, Aug 19, 2013 at 07:37:17PM -0700, Paul E. McKenney wrote:
> Hello!
>
> This series provides a few documentation updates:
>
> 1.Update rcu_barrier() documentation to note that it no longer is
> guaranteed to wait for a full grace period. This guarantee was
> a victim of
On Mon, Aug 19, 2013 at 07:37:46PM -0700, Paul E. McKenney wrote:
> From: "Paul E. McKenney"
>
> Note that this commit also updates the formatting of serveral of the
> bibtex entries to conform to that of my .bib files. I started
> accumulating entries back in the 1980s, back when bibtex
On Mon, Aug 19, 2013 at 07:05:58PM -0700, Paul E. McKenney wrote:
> On Mon, Aug 19, 2013 at 10:16:52AM -0700, Josh Triplett wrote:
> > On Mon, Aug 19, 2013 at 09:09:45AM -0700, Paul E. McKenney wrote:
> > > On Sun, Aug 18, 2013 at 09:19:25PM -0700, Josh Triplett wrote:
> > > > On Sun, Aug 18, 2013
On Mon, Aug 19, 2013 at 7:28 PM, Dave Chinner wrote:
> On Fri, Aug 16, 2013 at 04:22:09PM -0700, Andy Lutomirski wrote:
>> This is like file_update_time, except that it acts on a struct inode *
>> instead of a struct file *.
>>
>> Signed-off-by: Andy Lutomirski
>> ---
>> fs/inode.c | 72
On Wed, Aug 14, 2013 at 04:42:14PM -0600, Bjorn Helgaas wrote:
> [+cc Al, linux-fsdevel for fdget/fdput usage]
fdget/fdput use looks sane, the only thing is that I would rather
have an explicit include of linux/file.h instead of relying upon
linux/eventfd.h pulling it. Incidentally, there are
For some strings (e.g. version string), they are permitted to be larger
than PAGE_SIZE (although meaningless), so recommend to use scnprintf()
instead of sprintf().
Signed-off-by: Chen Gang
---
kernel/params.c |7 ---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git
(2013/08/19 22:46), Petr Tesarik wrote:
On Sun, 18 Aug 2013 19:59:53 -0700
"Eric W. Biederman" wrote:
Sorry Eric, I'm not clear to what you mean by ``short one core''...
Which are you suggesting? Disabling BSP if crash happens on AP is
reasonable?
Or restricting cpus to a single one only
For some strings, they are permitted to be larger than PAGE_SIZE, so
need use scnprintf() instead of sprintf(), or it will cause issue.
One case is:
if a module version is crazy defined (length more than PAGE_SIZE),
'modinfo' command is still OK (print full contents),
but for "cat
rt_mutex_finish_proxy_lock() can return failure code (e.g. -EINTR,
-ETIMEDOUT).
Original implementation has already noticed about it, but not check it
before next work.
Also let coments within 80 columns to pass "./scripts/checkpatch.pl".
Signed-off-by: Chen Gang
---
kernel/futex.c | 30
Correct spelling typos in comments.
Signed-off-by: Masanari Iida
---
drivers/staging/tidspbridge/include/dspbridge/cmm.h | 2 +-
drivers/staging/tidspbridge/include/dspbridge/proc.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git
If this patch is correct, also need modify the man page for the return
value of getgroups().
Thanks.
On 08/20/2013 11:01 AM, Chen Gang wrote:
> groups_alloc() can return NULL for 'group_info', also group_search()
> already considers about NULL for 'group_info', so can assume the caller
> has
groups_alloc() can return NULL for 'group_info', also group_search()
already considers about NULL for 'group_info', so can assume the caller
has right to use all related extern functions when 'group_info' is NULL.
For groups_free(), need check NULL to match groups_alloc(), just like
When unshare_userns() succeed, recommend to always set the return
parameter which may be used by caller.
The caller has rights to call it with 'new_cred' uninitialized, if
succeed, the caller can assume the 'new_cred' has been initialized.
Signed-off-by: Chen Gang
---
From: "Paul E. McKenney"
There are getting to be too many module parameters to permit the current
semi-random order, so this patch orders them.
Signed-off-by: Paul E. McKenney
Reviewed-by: Josh Triplett
---
kernel/rcutorture.c | 101 +---
1
From: "Paul E. McKenney"
The oldbatch variable in rcu_torture_writer() is stored to, but never
loaded from. This commit therefore removes it.
Signed-off-by: Paul E. McKenney
Reviewed-by: Josh Triplett
---
kernel/rcutorture.c | 2 --
1 file changed, 2 deletions(-)
diff --git
From: "Paul E. McKenney"
This commit adds a object_debug option to rcutorture to allow the
debug-object-based checks for duplicate call_rcu() invocations to
be deterministically tested.
Signed-off-by: Paul E. McKenney
Cc: Mathieu Desnoyers
Cc: Sedat Dilek
Cc: Davidlohr Bueso
Cc: Rik van
From: "Paul E. McKenney"
Currently, rcutorture has separate torture_types to test synchronous,
asynchronous, and expedited grace-period primitives. This has
two disadvantages: (1) Three times the number of runs to cover the
combinations and (2) Little testing of concurrent combinations of the
From: "Paul E. McKenney"
Although rcutorture counts CPU-hotplug online failures, it does
not explicitly record which CPUs were having trouble coming online.
This commit therefore emits a console message when online failure occurs.
Signed-off-by: Paul E. McKenney
Reviewed-by: Josh Triplett
---
From: "Paul E. McKenney"
This commit adds an isidle and jiffies argument to force_qs_rnp(),
dyntick_save_progress_counter(), and rcu_implicit_dynticks_qs() to enable
RCU's force-quiescent-state process to check for full-system idle.
Signed-off-by: Paul E. McKenney
Cc: Frederic Weisbecker
Cc:
From: "Paul E. McKenney"
This commit adds the state machine that takes the per-CPU idle data
as input and produces a full-system-idle indication as output. This
state machine is driven out of RCU's quiescent-state-forcing
mechanism, which invokes rcu_sysidle_check_cpu() to collect per-CPU
idle
Hello!
This series provides some rcutorture updates:
1. Add a debug_object option to rcutorture to allow testing
of RCU's debug-objects facilities.
2. Increase rcutorture test coverage by concurrently testing
synchronous, asynchronous, and expedited grace periods.
3.
From: "Paul E. McKenney"
This commit adds control variables and states for full-system idle.
The system will progress through the states in numerical order when
the system is fully idle (other than the timekeeping CPU), and reset
down to the initial state if any non-timekeeping CPU goes
From: "Paul E. McKenney"
The rcu_user_enter_after_irq() and rcu_user_exit_after_irq()
functions were intended for use by adaptive ticks, but changes
in implementation have rendered them unnecessary. This commit
therefore removes them.
Reported-by: Frederic Weisbecker
Signed-off-by: Paul E.
On 08/16/2013 06:02 PM, Michael S. Tsirkin wrote:
> On Fri, Aug 16, 2013 at 01:16:30PM +0800, Jason Wang wrote:
>> We used to limit the max pending DMAs to prevent guest from pinning too many
>> pages. But this could be removed since:
>>
>> - We have the sk_wmem_alloc check in both tun/macvtap to
From: "Paul E. McKenney"
Because RCU's quiescent-state-forcing mechanism is used to drive the
full-system-idle state machine, and because this mechanism is executed
by RCU's grace-period kthreads, this commit forces these kthreads to
run on the timekeeping CPU (tick_do_timer_cpu). To do
From: "Paul E. McKenney"
This commit adds fields to the rcu_dyntick structure that are used to
detect idle CPUs. These new fields differ from the existing ones in
that the existing ones consider a CPU executing in user mode to be idle,
where the new ones consider CPUs executing in user mode to
From: "Paul E. McKenney"
This commit adds information about testing nohz_full, and also emphasizes
the fact that you need a multi-CPU system to get any benefit from nohz_full.
Signed-off-by: Paul E. McKenney
Acked-by: Frederic Weisbecker
Reviewed-by: Josh Triplett
---
Hello!
Whenever there is at least one non-idle CPU, it is necessary to
periodically update timekeeping information. Before NO_HZ_FULL, this
updating was carried out by the scheduling-clock tick, which ran on
every non-idle CPU. With the advent of NO_HZ_FULL, it is possible
to have non-idle CPUs
From: "Paul E. McKenney"
This commit adds the code that updates the rcu_dyntick structure's
new fields to track the per-CPU idle state based on interrupts and
transitions into and out of the idle loop (NMIs are ignored because NMI
handlers cannot cleanly read out the time anyway). This code is
From: "Paul E. McKenney"
At least one CPU must keep the scheduling-clock tick running for
timekeeping purposes whenever there is a non-idle CPU. However, with
the new nohz_full adaptive-idle machinery, it is difficult to distinguish
between all CPUs really being idle as opposed to all non-idle
On Mon, 19 Aug 2013 22:26:32 -0400 Dave Jones wrote:
> Setting a variable to itself probably wasn't the intention here.
Probably not, no.
Applied, thanks.
NeilBrown
>
> Signed-off-by: Dave Jones
>
> diff --git a/drivers/md/md.c b/drivers/md/md.c
> index 9f13e13..b9cb9e4 100644
> ---
When failure occurs between nla_nest_start() and nla_nest_end(), need
call nla_nest_cancel() to clean up related things.
Signed-off-by: Chen Gang
---
kernel/taskstats.c |8 ++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index
On 08/16/2013 06:00 PM, Michael S. Tsirkin wrote:
> On Fri, Aug 16, 2013 at 01:16:29PM +0800, Jason Wang wrote:
>> We used to poll vhost queue before making DMA is done, this is racy if vhost
>> thread were waked up before marking DMA is done which can result the signal
>> to
>> be missed. Fix
From: Borislav Petkov
CONFIG_RCU_FAST_NO_HZ can increase grace-period durations by up to
a factor of four, which can result in long suspend and resume times.
Thus, this commit temporarily switches to expedited grace periods when
suspending the box and return to normal settings when resuming.
From: "Paul E. McKenney"
The current debug-objects fixups are complex and heavyweight, and the
fixups are not complete: Even with the fixups, RCU's callback lists
can still be corrupted. This commit therefore strips the fixups down
to their minimal form, eliminating two of the three.
It would
From: "Paul E. McKenney"
This commit drops an unneeded ACCESS_ONCE() and simplifies an "our work
is done" check in _rcu_barrier(). This applies feedback from Linus
(https://lkml.org/lkml/2013/7/26/777) that he gave to similar code
in an unrelated patch.
Signed-off-by: Paul E. McKenney
From: James Hogan
TREE_RCU and TREE_PREEMPT_RCU both cause kernel/rcutree.c to be built,
but only TREE_RCU selects IRQ_WORK, which can result in an undefined
reference to irq_work_queue for some (random) configs:
kernel/built-in.o In function `rcu_start_gp_advanced':
kernel/rcutree.c:1564:
From: Tejun Heo
list_first_or_null() should test whether the list is empty and return
pointer to the first entry if not in a RCU safe manner. It's broken
in several ways.
* It compares __kernel @__ptr with __rcu @__next triggering the
following sparse warning.
net/core/dev.c:4331:17:
From: "Paul E. McKenney"
If someone does a duplicate call_rcu(), the worst thing the second
call_rcu() could do would be to actually queue the callback the second
time because doing so corrupts whatever list the callback was already
queued on. This commit therefore makes __call_rcu() check the
From: "Paul E. McKenney"
When setting up an in-the-future "advanced" grace period, the code needs
to wake up the relevant grace-period kthread, which it currently does
unconditionally. However, this results in needless wakeups in the case
where the advanced grace period is being set up by the
From: "Paul E. McKenney"
According to the C standard 3.4.3p3, overflow of a signed integer results
in undefined behavior. This commit therefore changes the definitions
of time_after(), time_after_eq(), time_after64(), and time_after_eq64()
to avoid this undefined behavior. The trick is that
From: "Paul E. McKenney"
In order to better respond to things like duplicate invocations
of call_rcu(), RCU needs to see the status of a call to
debug_object_activate(). This would allow RCU to leak the callback in
order to avoid adding freelist-reuse mischief to the duplicate invoations.
This
Hello!
This series contains a number of miscellaneous fixes:
1. Switch to expedited grace periods during hibernation and
suspend/resume operations (courtesy of Borislav Petkov and
Bjørn Mork).
2. Make RCU debugobjects fixup actions leak callbacks rather than
The member variable 'delays' may be NULL, so need check NULL before use
it for all extern functions, just like __delayacct_tsk_init() and
__delayacct_add_tsk() have already done.
Signed-off-by: Chen Gang
---
kernel/delayacct.c | 10 ++
1 files changed, 10 insertions(+), 0
From: "Paul E. McKenney"
Note that this commit also updates the formatting of serveral of the
bibtex entries to conform to that of my .bib files. I started
accumulating entries back in the 1980s, back when bibtex insisted
that comma (",") was a separator, not a terminator. This rule forced
On Fri, Aug 16, 2013 at 04:22:12PM -0700, Andy Lutomirski wrote:
> A fancier implementation could probably avoid an extra journal
> transaction by adding a mapping_test_clear_cmtime call in
> ext4_writepages, but this should already be a considerable
> improvement -- we'll start one transaction
From: "Paul E. McKenney"
Each control-dependency example needs its barriers between the "if"
condition and the body of the "if" because a control dependency is
a dependency induced by a branch. This commit makes the needed
adjustment.
Reported-by: Yongming Shen
Signed-off-by: Paul E. McKenney
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