On Thu, Nov 12, 2015 at 08:48:54AM +0100, Ingo Molnar wrote:
>
> * Borislav Petkov wrote:
>
> > --- a/arch/x86/include/asm/pgtable_types.h
> > +++ b/arch/x86/include/asm/pgtable_types.h
> > @@ -279,17 +279,14 @@ static inline pmdval_t native_pmd_val(pmd_t pmd)
> > static inline pudval_t pud_pfn
Hi Jacek,
Thanks for the review.
your feedback is highly appreciated :)
I'll send next patch set soon.
On 2015년 11월 11일 01:30, Jacek Anaszewski wrote:
> Hi Ingi,
>
> Thanks for the update. Please find my comments below.
>
> On 11/10/2015 03:17 AM, Ingi Kim wrote:
>> This patch adds device drive
Move node_id zone_idx shrink flags into trace function,
so thay we don't need caculate these args if the trace is disabled,
and will make this function have less arguments.
Signed-off-by: yalin wang
---
include/trace/events/vmscan.h | 14 +++---
mm/vmscan.c | 7 ++-
On Thu, Nov 12, 2015 at 08:46:43AM +0100, Uwe Kleine-König wrote:
> On Thu, Nov 12, 2015 at 08:26:33AM +0100, LABBE Corentin wrote:
> > The simple_strtoul function is marked as obsolete.
> > This patch replace it by kstrtou8.
> >
> > Signed-off-by: LABBE Corentin
> > ---
> > drivers/i2c/busses/i
* Tony Luck wrote:
> Using __copy_user_nocache() as inspiration create a memory copy
> routine for use by kernel code with annotations to allow for
> recovery from machine checks.
>
> Notes:
> 1) Unlike the original we make no attempt to copy all the bytes
>up to the faulting address. The o
On Thu, Nov 12, 2015 at 08:44:47AM +0100, Uwe Kleine-König wrote:
> Hello,
>
> On Thu, Nov 12, 2015 at 08:25:09AM +0100, LABBE Corentin wrote:
> > of_match_device could return NULL, and so cause a NULL pointer
> > dereference later.
> >
> > Reported-by: coverity (CID 1130036)
> > Signed-off-by: L
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Signed-off-by: LABBE Corentin
---
drivers/mfd/qcom_rpm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
index 207a3bd..1be47ad 100644
--- a/drivers/mfd/qcom_rp
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Signed-off-by: LABBE Corentin
---
drivers/mtd/nand/atmel_nand.c | 7 +--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 475c938
* Borislav Petkov wrote:
> --- a/arch/x86/include/asm/pgtable_types.h
> +++ b/arch/x86/include/asm/pgtable_types.h
> @@ -279,17 +279,14 @@ static inline pmdval_t native_pmd_val(pmd_t pmd)
> static inline pudval_t pud_pfn_mask(pud_t pud)
> {
> if (native_pud_val(pud) & _PAGE_PSE)
> -
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Signed-off-by: LABBE Corentin
---
drivers/mtd/nand/mxc_nand.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 136e73a..9e424
On Thu, Nov 12, 2015 at 08:26:33AM +0100, LABBE Corentin wrote:
> The simple_strtoul function is marked as obsolete.
> This patch replace it by kstrtou8.
>
> Signed-off-by: LABBE Corentin
> ---
> drivers/i2c/busses/i2c-taos-evm.c | 5 -
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> d
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Signed-off-by: LABBE Corentin
---
drivers/tty/serial/imx.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 016e4be..22e91f7 100644
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Signed-off-by: LABBE Corentin
---
drivers/usb/phy/phy-mxs-usb.c | 7 +--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index 4d863eb
of_match_device could return NULL, and so cause a NULL pointer
dereference later. Renaming id to of_id (like all others do) in the
process.
Reported-by: coverity (CID 1324133)
Signed-off-by: LABBE Corentin
---
drivers/usb/phy/phy-msm-usb.c | 9 ++---
1 file changed, 6 insertions(+), 3 deleti
Hello,
On Thu, Nov 12, 2015 at 08:25:09AM +0100, LABBE Corentin wrote:
> of_match_device could return NULL, and so cause a NULL pointer
> dereference later.
>
> Reported-by: coverity (CID 1130036)
> Signed-off-by: LABBE Corentin
> ---
> drivers/i2c/busses/i2c-rcar.c | 6 +-
> 1 file changed
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Reported-by: coverity (CID 1324138)
Signed-off-by: LABBE Corentin
---
drivers/usb/chipidea/ci_hdrc_imx.c | 11 ---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/chipidea/ci_hdrc_
of_match_device could return NULL, and so cause a NULL pointer
dereference later. Renaming tmp_dev to of_id (like all others do) in the
process.
Reported-by: coverity (CID 1324135)
Signed-off-by: LABBE Corentin
---
drivers/usb/chipidea/usbmisc_imx.c | 10 ++
1 file changed, 6 insertions(
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Reported-by: coverity (CID 1324139)
Signed-off-by: LABBE Corentin
---
drivers/pwm/pwm-sun4i.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index cd9dde5..3
Move trace_reclaim_flags() into trace function,
so that we don't need caculate these flags if the trace is disabled.
Signed-off-by: yalin wang
---
include/trace/events/vmscan.h | 7 +++
mm/vmscan.c | 2 +-
2 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/inclu
McASP node needs to list all mandatory clocks: gfclk and ahclkx
Signed-off-by: Peter Ujfalusi
Tested-by: Felipe Balbi
---
arch/arm/boot/dts/dra7.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index bc672fb91
Hi Tony,
Changes since v3:
- rebased on mainline's HEAD
- Added Tested-by from Felipe
- Added Acked-by from Paul for the hwmod patches
Changes since v2:
- DTS patch added which is needed because of the clock handling changes
Felip Balbi reported that linux-next is broken right now since the DTS
Some module needs more than one functional clock in order to be accessible,
like the McASPs found in DRA7xx family.
This flag will indicate that the opt_clks need to be handled at the same
time as the main_clk for the given hwmod, ensuring that all needed clocks
are enabled before we try to access
McASP3 is used by default on DRA7x based boards for audio.
Signed-off-by: Peter Ujfalusi
Acked-by: Paul Walmsley
Tested-by: Felipe Balbi
---
arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 56 +++
1 file changed, 56 insertions(+)
diff --git a/arch/arm/mach-omap2/omap_h
On 12.11.2015 16:25, Stephen Rothwell wrote:
> Hi Krzysztof,
>
> On Thu, 12 Nov 2015 16:05:04 +0900 Krzysztof Kozlowski
> wrote:
>>
>> I moved my samsung-krzk repository for Samsung SoC (as co-maintainer)
>> from:
>> git://github.com/krzk/linux.git#for-next
>>
>> to:
>> git://git.kernel.org/pub/
of_match_device could return NULL, and so cause a NULL pointer
dereference later at line 809:
i2c_dev->hw = match->data;
Signed-off-by: LABBE Corentin
---
drivers/i2c/busses/i2c-tegra.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c
The simple_strtoul function is marked as obsolete.
This patch replace it by kstrtou8.
Signed-off-by: LABBE Corentin
---
drivers/i2c/busses/i2c-taos-evm.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-taos-evm.c
b/drivers/i2c/busses/i2c-taos-evm.c
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Reported-by: coverity (CID 1130036)
Signed-off-by: LABBE Corentin
---
drivers/i2c/busses/i2c-rcar.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i
Hi Krzysztof,
On Thu, 12 Nov 2015 16:05:04 +0900 Krzysztof Kozlowski
wrote:
>
> I moved my samsung-krzk repository for Samsung SoC (as co-maintainer)
> from:
> git://github.com/krzk/linux.git#for-next
>
> to:
> git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git#for-next
>
> (the name
On 11/02/2015 10:42 PM, KY Srinivasan wrote:
-Original Message-
From: Denis V. Lunev [mailto:d...@openvz.org]
Sent: Monday, November 2, 2015 3:34 AM
Cc: rka...@virtuozzo.com; de...@linuxdriverproject.org; linux-
ker...@vger.kernel.org; Andrey Smetanin ; KY
Srinivasan ; Haiyang Zhang
; V
On Wed, Nov 11, 2015 at 08:39:53PM +0100, Oleg Nesterov wrote:
> On 11/11, Peter Zijlstra wrote:
> >
> > On Wed, Nov 11, 2015 at 05:39:40PM +0800, Boqun Feng wrote:
> >
> > > Just be curious, should spin_unlock_wait() semantically be an ACQUIRE?
> >
> > I did wonder the same thing, it would simplif
Ok
i will send a V3 patch.
> On Nov 5, 2015, at 16:50, Kirill A. Shutemov wrote:
>
> On Thu, Nov 05, 2015 at 09:12:34AM +0100, Vlastimil Babka wrote:
>> On 10/29/2015 01:35 AM, Kirill A. Shutemov wrote:
@@ -2605,9 +2603,9 @@ out_unmap:
/* collapse_huge_page will return with t
This crash is caused by NULL pointer deference, in page_to_pfn() marco,
when page == NULL :
[ 182.639154 ] Unable to handle kernel NULL pointer dereference at virtual
address
[ 182.639491 ] pgd = ffc00077a000
[ 182.639761 ] [] *pgd=b9422003, *pud=b9422003,
On 2015/11/11 23:15, Paolo Bonzini wrote:
On 23/10/2015 11:15, Jian Zhou wrote:
data *msr_info)
}
break;
case MSR_IA32_DEBUGCTLMSR:
- if (!data) {
- /* We support the non-activated case already */
-
drm_gem_object_unreference() now expects obj->dev->struct_mutex to be
held. Use the newly-introduced drm_gem_object_unreference_unlocked()
which handles locking for us.
If we don't do this drm_gem_object_unreference() will get noisy about
struct_mutex not being held every time we call the SET_TILI
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Stephen,
I moved my samsung-krzk repository for Samsung SoC (as co-maintainer)
from:
git://github.com/krzk/linux.git#for-next
to:
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git#for-next
(the name of branch stays the same)
Can you
Hello!
> >> If you think I should reconsider the patch, you should resubmit it.
> >
> > I understand this, of course. But, before doing this i'd like to
> > clarify your concern, why exactly you think that loopback test will
> > break.
>
> If I didn't reply it means I don't have anything constr
Hello!
> >> > +- samsung,srom-timing : array of 6 integers, specifying bank timings in
> >> > the
> >> > +following order: Tacp, Tcah, Tcoh, Tacc, Tcos,
> >> > Tacs.
> >> > +Each value is specified in cycles and has the
> >> > following
> >> > +
On Wed, Nov 11, 2015 at 06:38:10PM +0900, Byungchul Park wrote:
> On Tue, Nov 10, 2015 at 09:36:00AM +0900, byungchul.p...@lge.com wrote:
> > From: Byungchul Park
> >
> > change from v4 to v5
> > - fix comments and commit message
> > - take new_load into account in update_cpu_load_nohz() and
> >
On 11/11/15 22:44, Arnaldo Carvalho de Melo wrote:
> Em Wed, Nov 11, 2015 at 03:02:35PM +0800, Wangnan (F) escreveu:
>>
>>
>> On 2015/11/6 21:59, Adrian Hunter wrote:
>>> On 06/11/15 15:19, Arnaldo Carvalho de Melo wrote:
Em Fri, Nov 06, 2015 at 09:46:12AM +, Wang Nan escreveu:
> In ds
Commit-ID: 5602ea09c19e85557f2b4d30be1d6ba349b7a038
Gitweb: http://git.kernel.org/tip/5602ea09c19e85557f2b4d30be1d6ba349b7a038
Author: Arnaldo Carvalho de Melo
AuthorDate: Wed, 11 Nov 2015 12:54:42 -0300
Committer: Arnaldo Carvalho de Melo
CommitDate: Wed, 11 Nov 2015 18:41:33 -0300
to
Commit-ID: e87b49116dedba3464fd8d0ec9393b4841167334
Gitweb: http://git.kernel.org/tip/e87b49116dedba3464fd8d0ec9393b4841167334
Author: Arnaldo Carvalho de Melo
AuthorDate: Mon, 9 Nov 2015 17:12:03 -0300
Committer: Arnaldo Carvalho de Melo
CommitDate: Wed, 11 Nov 2015 18:41:31 -0300
per
Commit-ID: 421fd0845eaeecce6b3806f7f0c0d67d1f9ad108
Gitweb: http://git.kernel.org/tip/421fd0845eaeecce6b3806f7f0c0d67d1f9ad108
Author: Wang Nan
AuthorDate: Fri, 6 Nov 2015 09:50:15 +
Committer: Arnaldo Carvalho de Melo
CommitDate: Wed, 11 Nov 2015 18:41:32 -0300
perf probe: Verify
The Qualcomm Technologies HIDMA device has been designed
to support virtualization technology. The driver has been
divided into two to follow the hardware design.
1. HIDMA Management driver
2. HIDMA Channel driver
Each HIDMA HW consists of multiple channels. These channels
share some set of commo
This patch adds support for hidma engine. The driver consists
of two logical blocks. The DMA engine interface and the
low-level interface. The hardware only supports memcpy/memset
and this driver only support memcpy interface. HW and driver
doesn't support slave interface.
Signed-off-by: Sinan Kay
The Qualcomm Technologies HIDMA device has been designed
to support virtualization technology. The driver has been
divided into two to follow the hardware design.
1. HIDMA Management driver
2. HIDMA Channel driver
Each HIDMA HW consists of multiple channels. These channels
share some set of commo
This patch adds supporting utility functions for selftest.
The intention is to share the self test code between
different drivers.
Supported test cases include:
1. dma_map_single
2. streaming DMA
3. coherent DMA
4. scatter-gather DMA
Signed-off-by: Sinan Kaya
---
drivers/dma/dmaengine.h | 2
Creating a QCOM directory for all QCOM DMA source
files.
Signed-off-by: Sinan Kaya
---
drivers/dma/Kconfig| 11 ++-
drivers/dma/Makefile | 2 +-
drivers/dma/qcom/Kconfig | 9 +
drivers/dma/qcom/Makefile
* Arnaldo Carvalho de Melo wrote:
> Hi Ingo,
>
> Please consider pulling,
>
> - Arnaldo
>
> The following changes since commit b71b437eedaed985062492565d9d421d975ae845:
>
> perf: Fix inherited events vs. tracepoint filters (2015-11-09 16:13:11
> +0100)
>
> are available in the git
> More importantly, it's good to test these cases too:
> * phram is built-in (not a module), with and without a phram= line on
> the commandline
> * writing to /sys/module/phram/parameters/phram (for both the module
> and built-in cases)
Hi Brian,
1) I have tried phram as built-in, with and
On (11/11/15 21:07), David Rientjes wrote:
[..]
> > > > /* Object size */
> > > > - unsigned long long min_objsize = max, max_objsize = 0,
> > > > avg_objsize;
> > > > + unsigned int min_objsize = UINT_MAX, max_objsize = 0,
> > > > avg_objsize;
> > > >
> > > > /* Num
The ACPI compiler uses the extended format when used
interrupt numbers are greater than 256. The PCI link code
currently only supports simple interrupt format. The IRQ
numbers are represented using 32 bits when extended IRQ
syntax. This patch changes the interrupt number type to
32 bits and places
+++ Petr Mladek [11/11/15 16:42 +0100]:
On Mon 2015-11-09 23:45:54, Jessica Yu wrote:
Intialize the list of relocation sections in the sample
klp_object (even if the list will be empty in this case).
Also mark module as a livepatch module so that the module
loader can appropriately initialize it
Hi, Baolu
On 11/12/15 at 10:45am, Lu, Baolu wrote:
> Hi Dave,
>
> Which device are you testing with? This implementation was developed
> and tested on Intel Skylake devices.
>
> It doesn't surprise me if it doesn't work with other silicons. But it do
> remind me to create a verified-list and put
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On Thu, 12 Nov 2015, Sergey Senozhatsky wrote:
> > This can't possibly be correct, the warnings are legitimate and the result
> > of the sigsetjmp() in the function. You may be interested in
> > returns_twice rather than marking random automatic variables as volatile.
>
> Hm, ok. I saw no probs
[unrelated quotes trimmed, attribution preserved.]
> >> > On Sun, Nov 8, 2015 at 3:30 PM, Greg KH
> >> > wrote:
> >> >> On Sun, Nov 08, 2015 at 10:39:43PM +0100, Richard Weinberger wrote:
> >> >>>
> >> >>> If you rework/redesign something you have to know what you want to
> >> >>> change.
> >>
+++ Miroslav Benes [11/11/15 15:17 +0100]:
On Mon, 9 Nov 2015, Jessica Yu wrote:
diff --git a/include/linux/module.h b/include/linux/module.h
index 3a19c79..c8680b1 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
[...]
+#ifdef CONFIG_LIVEPATCH
+extern void klp_prepare_patch
> I also think that the kernel should commit to either zeroing the page
> or leaving it unchanged in response to MADV_FREE (even if the decision
> of which to do is made later on). I think that your patch series does
> this, but only after a few of the patches are applied (the swap entry
> freeing
On Fri, Oct 30, 2015 at 03:52:17PM +0100, Daniel Vetter wrote:
> On Fri, Oct 30, 2015 at 03:20:46PM +0100, Maxime Ripard wrote:
> > Hi everyone,
> >
> > The Allwinner SoCs (except for the very latest ones) all share the
> > same set of controllers, loosely coupled together to form the display
> >
On Wed, Nov 11, 2015 at 12:50:43PM +0100, Peter Zijlstra wrote:
> On Wed, Nov 11, 2015 at 06:48:49PM +0900, Byungchul Park wrote:
> > On Wed, Nov 11, 2015 at 10:26:32AM +0100, Peter Zijlstra wrote:
> > > On Wed, Nov 11, 2015 at 05:50:27PM +0900, byungchul.p...@lge.com wrote:
> > >
> > > I've not a
On 11-11-15, 14:31, Rob Herring wrote:
> > + opp00 {
>
> Thought we are doing frequency for unit address here.
That's done by the (Already reviewed) 4th patch..
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On Thu, 12 Nov 2015, Sergey Senozhatsky wrote:
> > > /* Object size */
> > > - unsigned long long min_objsize = max, max_objsize = 0, avg_objsize;
> > > + unsigned int min_objsize = UINT_MAX, max_objsize = 0, avg_objsize;
> > >
> > > /* Number of partial slabs in a slabcache */
> > > unsig
On Mon, Nov 9, 2015 at 7:20 PM, Andy Shevchenko
wrote:
> On Thu, 2015-11-05 at 08:19 +0530, Punnaiah Choudary Kalluri wrote:
>> Added the basic driver for Arasan Nand Flash Controller used in
>> Zynq UltraScale+ MPSoC. It supports only Hw Ecc and upto 24bit
>> correction.
>>
>
>> +config MTD_NAND_
Hi David & Folks,
Soon I will submit a virtual tunnel device driver to LKML for review.
It uses rtnl_link_register to create a virtual network interface,
which then handles encryption, authentication, and some other things,
amongst various configured peers.
Right now the device is configurable vi
Hi Eddie,
Kevin Hilman writes:
> Eddie Huang writes:
>
>> On Tue, 2015-11-10 at 17:16 -0800, Kevin Hilman wrote:
>>> Hi Eddie,
>>>
>>> [...]
>>>
>>> > I check the log [0],
>>>
>>> Thanks for checking into this boot failure.
>>>
>>> > it seems first time mt8135-evbp1 boot to kernel
>>> > she
Hello Linus,
Could you pull this changes.
The following changes since commit 7379047d5585187d1288486d4627873170d0005a:
Linux 4.3-rc6 (2015-10-18 16:08:42 -0700)
are available in the git repository at:
git://git.osdn.jp/gitroot/uclinux-h8/linux.git tags/for-4.4
for you to fetch changes up t
On Wed, Nov 11, 2015 at 8:32 PM, Minchan Kim wrote:
>
> Linux doesn't have an ability to free pages lazy while other OS already
> have been supported that named by madvise(MADV_FREE).
>
> The gain is clear that kernel can discard freed pages rather than swapping
> out or OOM if memory pressure hap
On Mon, Nov 9, 2015 at 7:20 PM, Andy Shevchenko
wrote:
> On Thu, 2015-11-05 at 08:19 +0530, Punnaiah Choudary Kalluri wrote:
>> Added the basic driver for Arasan Nand Flash Controller used in
>> Zynq UltraScale+ MPSoC. It supports only Hw Ecc and upto 24bit
>> correction.
>>
>
>> +config MTD_NAND_
John,
On Wed, Nov 11, 2015 at 8:29 PM, John Youn wrote:
> I also feel it is not quite right as the SSPLIT should be able to
> happen during the SSPLIT of another device. I tried to reproduce
> and see the same scheduling but don't see any hang due to it.
>
> Yunzhi, any details on what kind of hu
+++ Petr Mladek [11/11/15 15:31 +0100]:
On Mon 2015-11-09 23:45:52, Jessica Yu wrote:
In livepatch modules, preserve section, symbol, string information from
the load_info struct in the module loader. This information is used to
patch modules that are not loaded in memory yet; specifically it is
On 10.11.2015 20:43, Pankaj Dubey wrote:
> This patch moves exynos_sys_powerdown_conf function above all
> static functions.
Please (always) describe the reason, the answer to "why?". In this case
I know why, but other reviewers may not and other people grepping
through history definitely won't kn
When I test below piece of code with 12 processes(ie, 512M * 12 = 6G
consume) on my (3G ram + 12 cpu + 8G swap, the madvise_free is siginficat
slower (ie, 2x times) than madvise_dontneed.
loop = 5;
mmap(512M);
while (loop--) {
memset(512M);
madvise(MADV_FREE or MADV_DONTNEED);
}
T
The MADV_FREE patchset changes page reclaim to simply free a clean
anonymous page with no dirty ptes, instead of swapping it out; but
KSM uses clean write-protected ptes to reference the stable ksm page.
So be sure to mark that page dirty, so it's never mistakenly discarded.
[hughd: adjusted comme
Most architectures use asm-generic, but alpha, mips, parisc, xtensa
need their own definitions.
This patch defines MADV_FREE for them so it should fix build break
for their architectures.
Maybe, I should split and feed piecies to arch maintainers but
included here for mmotm convenience.
Cc: Mich
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite
of the contents since MADV_FREE syscall is called for THP page.
This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE
support.
Signed-off-by: Minchan Kim
Signed-off-by: Andrew Morton
---
arch/x86/include/asm/pg
Basically, MADV_FREE relies on dirty bit in page table entry to decide
whether VM allows to discard the page or not. IOW, if page table entry
includes marked dirty bit, VM shouldn't discard the page.
However, as a example, if swap-in by read fault happens, page table entry
doesn't have dirty bit
MADV_FREE is a hint that it's okay to discard pages if there is memory
pressure and we use reclaimers(ie, kswapd and direct reclaim) to free them
so there is no value keeping them in the active anonymous LRU so this
patch moves them to inactive LRU list's head.
This means that MADV_FREE-ed pages w
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite
of the contents since MADV_FREE syscall is called for THP page.
This patch adds pmd_mkclean for THP page MADV_FREE support.
Signed-off-by: Minchan Kim
---
arch/arm64/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion
Linux doesn't have an ability to free pages lazy while other OS already
have been supported that named by madvise(MADV_FREE).
The gain is clear that kernel can discard freed pages rather than swapping
out or OOM if memory pressure happens.
Without memory pressure, freed pages would be reused by u
MADV_FREE is on linux-next so long time. The reason was two, I think.
1. MADV_FREE code on reclaim path was really mess.
2. Andrew really want to see voice of userland people who want to use
the syscall.
A few month ago, Daniel Micay(jemalloc active contributor) requested me
to make progress
On 10.11.2015 20:43, Pankaj Dubey wrote:
> This patch moves Exynos PMU driver implementation from "arm/mach-exynos"
> to "drivers/soc/samsung". This driver is mainly used for setting misc
> bits of register from PMU IP of Exynos SoC which will be required to
> configure before Suspend/Resume. Curre
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite
of the contents since MADV_FREE syscall is called for THP page.
This patch adds pmd_mkclean for THP page MADV_FREE support.
Signed-off-by: Minchan Kim
---
arch/arm/include/asm/pgtable-3level.h | 1 +
1 file changed, 1 inse
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite
of the contents since MADV_FREE syscall is called for THP page.
This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE
support.
Signed-off-by: Minchan Kim
Signed-off-by: Andrew Morton
---
arch/powerpc/include/as
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite
of the contents since MADV_FREE syscall is called for THP page.
This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE
support.
Signed-off-by: Minchan Kim
Signed-off-by: Andrew Morton
---
arch/sparc/include/asm/
MADV_FREEed page's hotness is very arguble.
Someone think it's hot while others are it's cold.
Quote from Shaohua
"
My main concern is the policy how we should treat the FREE pages. Moving it to
inactive lru is definitionly a good start, I'm wondering if it's enough. The
MADV_FREE increases memory
Hi Brian,
On 11/12/2015 12:54 AM, Brian Norris wrote:
> In addition to my other comments:
>
[...]
>> +int (*spi_mtd_mmap_read)(struct spi_device *spi,
>> + loff_t from, size_t len,
>> + size_t *retlen, u_char *buf,
>> +
There are issues to support MADV_FREE.
* MADV_FREE pages's hotness
It's really arguable. Someone think it's cold while others are not.
It's matter of workload dependent so I think no one could have
a one way. IOW, we need tunable knob.
* MADV_FREE on swapless system
Now, we instantly free MADV_
From: Chen Gang
For uapi, need try to let all macros have same value, and MADV_FREE is
added into main branch recently, so need redefine MADV_FREE for it.
At present, '8' can be shared with all architectures, so redefine it to
'8'.
Cc: r...@twiddle.net ,
Cc: i...@jurassic.park.msu.ru
Cc: matts
We don't need to split THP page when MADV_FREE syscall is called.
It could be done when VM decide to free it in reclaim path when
memory pressure is heavy so we could avoid unnecessary THP split.
For that, this patch changes two things
1. __split_huge_page_map
It does pte_mkdirty to subpages onl
Historically, we have disabled reclaiming of anonymous pages
completely with swapoff or non-swap configurable system.
It did make sense but problem for lazy free pages is that
we couldn't get a chance to discard MADV_FREE hinted pages
in reclaim path in those systems.
That's why current MADV_FREE
We have used binary variable "file" to identify whether it is anon LRU
or file LRU. It's good but it becomes obstacle if we add new LRU.
So, this patch introduces some wrapper functions to handle it.
Signed-off-by: Minchan Kim
---
include/linux/mm_inline.h | 64 +
On 11/11/2015 4:22 PM, Doug Anderson wrote:
> John,
>
> On Fri, Nov 6, 2015 at 2:04 AM, Yunzhi Li wrote:
>> hi John ,
>>
>> As we talked yesterday, I tried to fix the split schedule sequence. This
>> patch will
>> avoid scheduling SSPLIT-IN packet for another device between
>> SSPLIT-OUT-begin
On 10.11.2015 20:43, Pankaj Dubey wrote:
> This patch splits up mach-exynos/pmu.c file, and moves exynos5420,
> PMU configuration data and functions handing data into exynos5420
> SoC specific PMU file mach-exynos/exynos5420-pmu.c.
>
> Signed-off-by: Pankaj Dubey
> ---
> arch/arm/mach-exynos/Mak
On Wed, Nov 11, 2015 at 02:01:51PM -0800, Luck, Tony wrote:
> Date: Wed, 11 Nov 2015 14:01:51 -0800
> From: Tony Luck
> To: "Chen, Gong"
> Cc: b...@alien8.de, linux-e...@vger.kernel.org, linux-kernel@vger.kernel.org
> Subject: [UNTESTED PATCH] x86, mce: Avoid double entry of deferred errors
> in
On 10.11.2015 20:42, Pankaj Dubey wrote:
> This patch splits up mach-exynos/pmu.c file, and moves exynos3250 PMU
> configuration data and functions handing those data into exynos3250
> SoC specific PMU file mach-exynos/exynos3250-pmu.c.
>
> Signed-off-by: Pankaj Dubey
> ---
> arch/arm/mach-exyno
On 11/06/2015 01:01 PM, Tony Luck wrote:
Extend the severity checking code to add a new context IN_KERN_RECOV
which is used to indicate that the machine check was triggered by code
in the kernel with a fixup entry.
Add code to check for this situation and respond by altering the return
IP to the
On 11/06/2015 12:57 PM, Tony Luck wrote:
Copy the existing page fault fixup mechanisms to create a new table
to be used when fixing machine checks. Note:
1) At this time we only provide a macro to annotate assembly code
2) We assume all fixups will in code builtin to the kernel.
Shouldn't the f
On 10.11.2015 20:42, Pankaj Dubey wrote:
> Moving Exynos PMU specific header file into "include/linux/soc/samsung"
> thus updated affected files under "mach-exynos" to use new location of
> these header files.
>
> Signed-off-by: Amit Daniel Kachhap
> Signed-off-by: Pankaj Dubey
> ---
> arch/arm
On 12 November 2015 at 01:54, Mike Snitzer wrote:
> On Wed, Nov 11 2015 at 4:31am -0500,
> Baolin Wang wrote:
>
>> When we use dm-crypt to decrypt block data, it will decrypt the block data
>> in endio() when one IO is completed. In this situation we don't want the
>> cloned bios is freed before
On 10.11.2015 20:42, Pankaj Dubey wrote:
> If no platform devices binded to the driver but driver itself loaded and
> exynos_sys_powerdown_conf is called from
> arch/arm/mach-exynos/{suspend.c, pm.c} it will result in NULL pointer access,
> to prevent this added check on pmu_context for NULL.
>
>
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