[tip:perf/urgent] perf top: Check the latency of perf_top__mmap_read()

Commit-ID: 1db6c3a2144eaf0d8aaeecf46df73106834bad75 Gitweb: https://git.kernel.org/tip/1db6c3a2144eaf0d8aaeecf46df73106834bad75 Author: Kan Liang AuthorDate: Thu, 18 Jan 2018 13:26:32 -0800 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 6 Feb 2018 10:11:51 -0300 perf top: Check t

[tip:perf/urgent] perf tools: Substitute yet another strtoull()

Commit-ID: a70770d9b64ab4a36008d64542fb3bb6600c7b07 Gitweb: https://git.kernel.org/tip/a70770d9b64ab4a36008d64542fb3bb6600c7b07 Author: Andy Shevchenko AuthorDate: Mon, 29 Jan 2018 15:03:59 +0200 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 6 Feb 2018 10:11:52 -0300 perf tools:

Re: [PATCH v3 5/5] drm: adv7511: Add support for i2c_new_secondary_device

Hi Kieran, Thank you for the patch. On Tuesday, 13 February 2018 00:07:53 EET Kieran Bingham wrote: > From: Kieran Bingham > > The ADV7511 has four 256-byte maps that can be accessed via the main I²C > ports. Each map has it own I²C address and acts as a standard slave > device on the I²C bus.

Re: [PATCH] kernel/sched/cpudeadline: Fixed code style errors and warnings

* Mario Leinweber wrote: > diff --git a/kernel/sched/cpudeadline.c b/kernel/sched/cpudeadline.c > index 8d9562d890d3..6a9defebbb54 100644 > --- a/kernel/sched/cpudeadline.c > +++ b/kernel/sched/cpudeadline.c > @@ -42,8 +42,9 @@ static void cpudl_heapify_down(struct cpudl *cp, int idx) >

Applied "regmap: Use helper function for register offset" to the regmap tree

The patch regmap: Use helper function for register offset has been applied to the regmap tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and se

Applied "regmap: Correct comparison in regmap_cached" to the regmap tree

The patch regmap: Correct comparison in regmap_cached has been applied to the regmap tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent t

Re: [PATCH] khungtaskd: Kick stuck processes

On Tue 13-02-18 12:08:12, Chris Wilson wrote: > Quoting Michal Hocko (2018-02-13 11:56:42) > > On Thu 08-02-18 19:07:53, Chris Wilson wrote: > > > After spotting a stuck process, and having decided not to panic, give > > > the task a kick to see if that helps it to recover (e.g. to paper over a > >

[RESEND PATCH v5 0/6] IR support for A83T

This patch series adds support for the sunxi A83T ir module and enhances the sunxi-ir driver. Right now the base clock frequency for the ir driver is a hard coded define and is set to 8 MHz. This works for the most common ir receivers. On the Sinovoip Bananapi M3 the ir receiver needs, a 3 MHz ba

[RESEND PATCH v5 2/6] media: dt: bindings: Update binding documentation for sunxi IR controller

This patch updates documentation for Device-Tree bindings for sunxi IR controller and adds the new optional property for the base clock frequency. Signed-off-by: Philipp Rossak Acked-by: Maxime Ripard Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/media/sunxi-ir.txt | 3 +++ 1

[RESEND PATCH v5 3/6] arm: dts: sun8i: a83t: Add the cir pin for the A83T

The CIR Pin of the A83T is located at PL12. Signed-off-by: Philipp Rossak --- arch/arm/boot/dts/sun8i-a83t.dtsi | 5 + 1 file changed, 5 insertions(+) diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi index 7f4955a5fab7..f7f78a27e21d 100644 --- a/arch/arm/b

[RESEND PATCH v5 5/6] arm: dts: sun8i: a83t: bananapi-m3: Enable IR controller

The Bananapi M3 has an onboard IR receiver. This enables the onboard IR receiver subnode. Unlike the other IR receivers this one needs a base clock frequency of 300 Hz (3 MHz), to be able to work. Signed-off-by: Philipp Rossak Acked-by: Chen-Yu Tsai --- arch/arm/boot/dts/sun8i-a83t-bananapi

[RESEND PATCH v5 6/6] arm: dts: sun8i: h3-h5: ir register size should be the whole memory block

The size of the register should be the size of the whole memory block, not just the registers, that are needed. Signed-off-by: Philipp Rossak --- arch/arm/boot/dts/sunxi-h3-h5.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi b/arch/arm/

[RESEND PATCH v5 4/6] arm: dts: sun8i: a83t: Add support for the cir interface

The cir interface is like on the H3 located at 0x01f02000 and is exactly the same. This patch adds support for the ir interface on the A83T. Signed-off-by: Philipp Rossak --- arch/arm/boot/dts/sun8i-a83t.dtsi | 13 + 1 file changed, 13 insertions(+) diff --git a/arch/arm/boot/dts/su

[ANNOUNCE] util-linux v2.32-rc1

The util-linux release v2.32-rc1 is available at http://www.kernel.org/pub/linux/utils/util-linux/v2.32/ Feedback and bug reports, as always, are welcomed. Karel Util-linux 2.32 Release Notes = Release highlights -- The command cal(1) has b

Re: [PATCH 1/4] arm64: dts: renesas: r8a77995: add FCPVB node

Hi Kieran, Thank you for the patch. On Tuesday, 13 February 2018 00:25:26 EET Kieran Bingham wrote: > From: Kieran Bingham > > The FCPVB handles the interface between the VSPB and memory. > > Signed-off-by: Kieran Bingham Reviewed-by: Laurent Pinchart > --- > arch/arm64/boot/dts/renesas/r

Re: [PATCH 2/4] arm64: dts: renesas: r8a77995: add FCPVD nodes

Hi Kieran, Thank you for the patch. On Tuesday, 13 February 2018 00:25:27 EET Kieran Bingham wrote: > From: Kieran Bingham > > The FCPVD handles the interface between the VSPD and memory. > > Signed-off-by: Kieran Bingham Reviewed-by: Laurent Pinchart I would however squash this with patch

[RESEND PATCH v5 1/6] media: rc: update sunxi-ir driver to get base clock frequency from devicetree

This patch updates the sunxi-ir driver to set the base clock frequency from devicetree. This is necessary since there are different ir receivers on the market, that operate with different frequencies. So this value could be set if the attached ir receiver needs a different base clock frequency, th

Re: [PATCH 02/11] video: fbdev: kconfig: Remove blank help text

On Thursday, February 01, 2018 05:56:18 PM Ulf Magnusson wrote: > On Thu, Feb 1, 2018 at 4:52 PM, Bartlomiej Zolnierkiewicz > wrote: > > > > Hi, > > > > On Wednesday, January 31, 2018 10:34:21 AM Ulf Magnusson wrote: > >> Blank help texts are probably either a typo, a Kconfig misunderstanding, > >

Re: [PATCH] x86/xen: Calculate __max_logical_packages on PV domains

* Juergen Gross wrote: > On 08/02/18 01:59, Boris Ostrovsky wrote: > > > > > > On 02/07/2018 06:49 PM, Prarit Bhargava wrote: > >> The kernel panics on PV domains because native_smp_cpus_done() is > >> only called for HVM domains. > >> > >> Calculate __max_logical_packages for PV domains. > >>

Applied "regmap: Correct offset handling in regmap_volatile_range" to the regmap tree

The patch regmap: Correct offset handling in regmap_volatile_range has been applied to the regmap tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hour

Applied "regmap: Don't use format_val in regmap_bulk_read" to the regmap tree

The patch regmap: Don't use format_val in regmap_bulk_read has been applied to the regmap tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and s

Re: Linux 4.16-rc1: regression bisected, Debian kernel package tool make-kpkg stalls indefinitely during kernel build due to commit "kconfig: remove check_stdin()"

On Tue, Feb 13, 2018 at 12:33:24PM +0100, Ulf Magnusson wrote: > On Tue, Feb 13, 2018 at 11:00:49AM +0100, Sander Eikelenboom wrote: > > On 13/02/18 05:09, Masahiro Yamada wrote: > > > 2018-02-13 12:00 GMT+09:00 Woody Suwalski : > > >> Sander Eikelenboom wrote: > > >>> > > >>> L.S., > > >>> > > >>>

Re: [PATCH] p9caps: add Plan9 capability devices

On 13.02.2018 07:16, Serge E. Hallyn wrote: + /* make sure only one instance per namespace can be opened */ > > ... at a time yeah, right. might be better to keep this state in the user_ns itself, would avoid kzalloc below. thought about, but hesitated to touch user_ns. might not be t

[tip:x86/build] x86/build: Drop superfluous ALIGN from the linker script

Commit-ID: a06cc94f3f8dfab74fe7fac3a6e9f15d77566d00 Gitweb: https://git.kernel.org/tip/a06cc94f3f8dfab74fe7fac3a6e9f15d77566d00 Author: Cao jin AuthorDate: Thu, 8 Feb 2018 14:38:57 +0800 Committer: Ingo Molnar CommitDate: Tue, 13 Feb 2018 13:08:46 +0100 x86/build: Drop superfluous ALIG

Re: [PATCH v3 8/7] TESTING_ONLY x86/entry: reduce static footprint of idtentry

* Linus Torvalds wrote: > On Mon, Feb 12, 2018 at 1:37 AM, Ingo Molnar wrote: > > > > Ok, so this does not look _that_ complicated, and the .text savings are > > significant: > > Honestly, I think we should do it. 3kB of assembly code is noticeable. > > Also, that patch actually allows more c

Re: [PATCH 3/4] arm64: dts: renesas: r8a77995: add VSPBS instance

Hi Kieran, Thank you for the patch. On Tuesday, 13 February 2018 00:25:28 EET Kieran Bingham wrote: > From: Kieran Bingham > > The r8a77995 has a VSPBS to support image processing such as blending of > 2 input images. > > Signed-off-by: Kieran Bingham > --- > arch/arm64/boot/dts/renesas/r8a7

Re: [PATCH 4/4] arm64: dts: renesas: r8a77995: add VSPD instances

Hi Kieran, Thank you for the patch. On Tuesday, 13 February 2018 00:25:29 EET Kieran Bingham wrote: > From: Kieran Bingham > > The r8a77995 has two VSPDs to handle display pipelines with a DU. > > Signed-off-by: Kieran Bingham > --- > arch/arm64/boot/dts/renesas/r8a77995.dtsi | 20 ++

Re: smpboot: do_boot_cpu failed(-1) to wakeup CPU#0

Hi all, On 07/02/18 12:48, Tvrtko Ursulin wrote: Hi, We are seeing failures to online the CPU0 on Apollo Lake in the form of: <6>[ 126.508783] smpboot: CPU 0 is now offline <6>[ 127.520746] smpboot: Booting Node 0 Processor 0 APIC 0x0 <3>[ 137.521036] smpboot: do_boot_cpu failed(-1)

Re: [PATCH v2] power: reset: Add Spreadtrum SC27xx PMIC power off support

Hi Baolin, On Fri, Feb 09, 2018 at 01:30:44PM +0100, Sebastian Reichel wrote: > On Fri, Feb 09, 2018 at 05:43:38PM +0800, Baolin Wang wrote: > > On Spreadtrum platform, we need power off system through external SC27xx > > series PMICs including the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.

[RFC PATCH 0/1] nvme: implement get log page offset and dwords

This patch introduces support for get log page offset and extends the number of dwords to be 32 bits. A function is introduced that takes the offset and implements the support. This is needed for ocssd to retrieve the report chunk log page, which can span a couple of megabytes. The patch is based

[PATCH 1/1] nvme: implement log page low/high offset and dwords

NVMe 1.2.1 extends the get log page interface to include 64 bit offset and increases the number of dwords to 32 bits. Implement for future use. Signed-off-by: Matias Bjørling --- drivers/nvme/host/core.c | 36 1 file changed, 24 insertions(+), 12 deletions(-)

[PATCH v3 00/11] ARM: dts: STi: Fix DT dtc warnings

From: Patrice Chotard This series fixes all dtc warnings related to STi platforms dt files. It has been reported by Rob Herring [1] For most of implicated node, the addition of a fake reg property fixes these warnings. For others nodes, their location in device tree have been updated. [1] https

[PATCH v3 09/11] ARM: dts: STi: Update sound related nodes location

From: Patrice Chotard Move sound node outside soc node and sti_sasg_codec node as child of syscfg_core node. This allows to fix the following warning when compiling dtb with W=1 option: arch/arm/boot/dts/stih407-b2120.dtb: Warning (unit_address_vs_reg): Node /soc/sound/simple-audio-card,dai-link

[PATCH v3 04/11] ARM: dts: STi: Add fake reg property for miphy28lp_phy

From: Patrice Chotard Add fake reg property to miphy28lp_phy. This allows to fix the following warning when compiling dtb with W=1 option: arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg): Node /soc/miphy28lp missing or empty reg/ranges property arch/arm/boot/dts/stih410-b2120.dtb:

[PATCH v3 08/11] ARM: dts: STi: Add fake reg property for usb2_picophyX nodes

From: Patrice Chotard Add fake reg property for usb2_picophy nodes. This allows to fix the following warning when compiling dtb with W=1 option : arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg): Node /soc/phy2 missing or empty reg/ranges property arch/arm/boot/dts/stih410-b2120.dtb

[PATCH v3 10/11] ARM: dts: STi: Update clocks node location

From: Patrice Chotard Move: _ arm_periph_clk node as child of clockgen-a9@92b node _ clk_m_a9_ext2f_div2 node as child of clk_s_c0_flexgen node _ clk-tmdsout-hdmi node outiside soc node This allows to fix the following warnings when compiling dtb with W=1 option : arch/arm/boot/dts/stih4

[PATCH v3 01/11] ARM: dts: STi: Fix bindings notation

From: Patrice Chotard Remove leading 0x and 0s from bindings notation Add missing unit-address and remove some which are useless. This allows to fix several warnings like : Warning (unit_address_vs_reg): Node has a reg or ranges property, but no unit name Warning (simple_bus_reg): Node XX

Re: [PATCH v2 09/12] ARM: dts: STi: Add fake reg property for sound related nodes

Hi Rob On 02/12/2018 04:40 PM, Rob Herring wrote: > On Mon, Feb 12, 2018 at 8:43 AM, wrote: >> From: Patrice Chotard >> >> Add fake reg property to sound, simple-audio-card, dai-link and >> sti_sasg_codec nodes, this allows to fix the following warning >> when compiling dtb with W=1 option: >>

Re: [PATCH v7 1/6] base: power: runtime: Export pm_runtime_get/put_suppliers

On Tue, Feb 13, 2018 at 9:00 PM, Robin Murphy wrote: > On 13/02/18 07:44, Tomasz Figa wrote: >> >> Hi Vivek, >> >> On Wed, Feb 7, 2018 at 7:31 PM, Vivek Gautam >> wrote: >>> >>> The device link allows the pm framework to tie the supplier and >>> consumer. So, whenever the consumer is powered-on t

[PATCH v3 02/11] ARM: dts: STi: Move leds node outside soc node

From: Patrice Chotard Leds are not part of soc, so nove them outside soc node. This allows to fix the following warnings when compiling dtb with W=1 option : arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg): Node /soc/leds missing or empty reg/ranges property arch/arm/boot/dts/stih

[PATCH v3 07/11] ARM: dts: STi: Add fake reg for restart, powerdown and picophy/softreset

From: Patrice Chotard Add fake reg property for restart, powerdown, picophyreset and softreset. This allows to fix the following warning when compiling dtb with W=1 option: arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg): Node /soc/restart missing or empty reg/ranges property arch/

[PATCH v3 03/11] ARM: dts: STi: Add fake reg property for sti-display-subsystem

From: Patrice Chotard As sti-display-subsystem sub-nodes (sti-compositor, sti-tvout sti-hdmi, sti-hda and sti-hqvdp) are SoC's IP, we add a fake reg property. This allows to fix the following warning when compiling dtb with W=1 option: arch/arm/boot/dts/stih410-b2120.dtb: Warning (unit_address_v

[PATCH v3 11/11] ARM: dts: STi: Remove unused clk_ext2f_a9 clock

From: Patrice Chotard This clock node is unused, remove it. This allows to fix the following warnings when compiling dtb with W=1 option : arch/arm/boot/dts/stih410-b2120.dtb: Warning (simple_bus_reg): Node /clocks/clockgen-c0 missing or empty reg/ranges property arch/arm/boot/dts/stih410-b2260

[PATCH v3 05/11] ARM: dts: STi: Add fake reg property for irq-syscfg

From: Patrice Chotard Add fake reg property to irq-syscfg node. This allows to fix the following warning when compiling dtb with W=1 option: arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg): Node /soc/irq-syscfg missing or empty reg/ranges property arch/arm/boot/dts/stih410-b2120.dt

Re: [PATCH v7 3/6] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device

On 13/02/18 08:24, Tomasz Figa wrote: Hi Vivek, Thanks for the patch. Please see my comments inline. On Wed, Feb 7, 2018 at 7:31 PM, Vivek Gautam wrote: From: Sricharan R The smmu device probe/remove and add/remove master device callbacks gets called when the smmu is not linked to its maste

[PATCH v3 06/11] ARM: dts: STi: Add fake reg property for remote processors

From: Patrice Chotard As st231-gp0, st231-delta are part of SoC, we add a fake reg property instead of moving all these nodes outside soc node. This allows to fix the following warning when compiling dtb with W=1 option: arch/arm/boot/dts/stih407-b2120.dtb: Warning (simple_bus_reg): Node /soc/st

[PATCH] fs: dcache: Avoid livelock between d_alloc_parallel and __d_add

If d_alloc_parallel runs concurrently with __d_add, it is possible for d_alloc_parallel to continuously retry whilst i_dir_seq has been incremented to an odd value by __d_add: CPU0: __d_add n = start_dir_add(dir); cmpxchg(&dir->i_dir_seq, n, n + 1) == n CPU1: d_alloc_paral

Re: [PATCH v2 10/12] ARM: dts: STi: Add fake reg property for clocks

Hi Rob On 02/12/2018 04:22 PM, Rob Herring wrote: > On Mon, Feb 12, 2018 at 8:43 AM, wrote: >> From: Patrice Chotard >> >> For all clock's element inside SoC, add a fake reg property, >> this allows to fix the following warnings when compiling >> dtb with W=1 option : >> >> arch/arm/boot/dts/st

[PATCH v3 2/3] arm64: dts: uniphier: add speaker out for UniPhier LD11/LD20 boards

This patch adds codec node for TI TAS571x on UniPhier LD11/20 global boards. And adds settings of AIO for speaker out. Signed-off-by: Katsuhiro Suzuki --- Changes in v3: - Use phandle of endpoint directly instead of port node --- .../boot/dts/socionext/uniphier-ld11-global.dts | 21 +

[PATCH v3 0/3] add UniPhier audio nodes

This series adds device-tree nodes for Socionext audio system for UniPhier LD11/LD20 SoCs. This one enables I2S output for Line-In, Line-Out, S/PDIF output and compress audio output. Katsuhiro Suzuki (3): arm64: dts: uniphier: add sound node for UniPhier arm64: dts: uniphier: add speaker out f

[PATCH v3 1/3] arm64: dts: uniphier: add sound node for UniPhier

This patch adds audio controller, codec and simple card node of UniPhier AIO sound system for LD11/20 SoCs. Signed-off-by: Katsuhiro Suzuki --- Changes in v3: - Move sound and spdif-out nodes to root from soc node - Use phandle of endpoint directly instead of port node - Describe connecti

[PATCH v3 3/3] arm64: dts: uniphier: add compress audio out for UniPhier LD11/LD20

This patch adds compress audio node for S/PDIF on UniPhier LD11/20 global boards. And adds settings of AIO for it. Signed-off-by: Katsuhiro Suzuki --- Changes in v3: - Move comp-spdif-out node to root from soc node - Use phandle of endpoint directly instead of port node --- arch/arm64/boot

Re: [PATCH 1/2] sched/fair: Consider SD_NUMA when selecting the most idle group to schedule on

On Tue, Feb 13, 2018 at 11:35:48AM +, Mel Gorman wrote: > > However, if we have numa balancing enabled, that will counteract > > the normal spreading across nodes, so in that regard it makes sense, but > > the above code is not conditional on numa balancing. > > > > It's not conditional on NU

Re: [PATCH] Fix a misspelling in kernel/cpu.c

* Kangmin Park wrote: > --- > kernel/cpu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/cpu.c b/kernel/cpu.c > index 53f7dc6..9a1ee53 100644 > --- a/kernel/cpu.c > +++ b/kernel/cpu.c > @@ -1336,7 +1336,7 @@ static struct cpuhp_step cpuhp_ap_states[] = { >

[tip:x86/pti] x86/speculation: Fix up array_index_nospec_mask() asm constraint

Commit-ID: 87360f969eb214fb22b7e03acb2475a809e040c5 Gitweb: https://git.kernel.org/tip/87360f969eb214fb22b7e03acb2475a809e040c5 Author: Dan Williams AuthorDate: Tue, 6 Feb 2018 18:22:40 -0800 Committer: Ingo Molnar CommitDate: Tue, 13 Feb 2018 14:01:25 +0100 x86/speculation: Fix up arr

Re: Linux 4.16-rc1: regression bisected, Debian kernel package tool make-kpkg stalls indefinitely during kernel build due to commit "kconfig: remove check_stdin()"

On Tue, Feb 13, 2018 at 1:35 PM, Ulf Magnusson wrote: > On Tue, Feb 13, 2018 at 12:33:24PM +0100, Ulf Magnusson wrote: >> On Tue, Feb 13, 2018 at 11:00:49AM +0100, Sander Eikelenboom wrote: >> > On 13/02/18 05:09, Masahiro Yamada wrote: >> > > 2018-02-13 12:00 GMT+09:00 Woody Suwalski : >> > >> Sa

Re: [PATCH RFC] vfio/mdev: delay uevent after initialization complete

On Mon, 12 Feb 2018 14:20:57 -0700 Alex Williamson wrote: > On Fri, 9 Feb 2018 11:27:16 +0100 > Cornelia Huck wrote: > > > The registration code first registers the mdev device, and then > > proceeds to populate sysfs. An userspace application that listens > > for the ADD uevent is therefore l

Re: [PATCH v2 5/5] drm: adv7511: Add support for i2c_new_secondary_device

Hi Dan Thank you for the review, On 13/02/18 07:23, Dan Carpenter wrote: > On Mon, Feb 12, 2018 at 06:11:57PM +, Kieran Bingham wrote: >> +adv7511->i2c_packet = i2c_new_secondary_device(i2c, "packet", >> +ADV7511_PACKET_I2C_ADDR_DEFAULT); >> +if (!a

Re: [PATCH v3 1/5] dt-bindings: media: adv7604: Add support for i2c_new_secondary_device

Hi Laurent, On 13/02/18 12:06, Laurent Pinchart wrote: > Hi Kieran, > > Thank you for the patch. Thank you for your review, > On Tuesday, 13 February 2018 00:07:49 EET Kieran Bingham wrote: >> From: Jean-Michel Hautbois >> >> The ADV7604 has thirteen 256-byte maps that can be accessed via the

Re: RFC: build config via DT names

On 12.02.2018 23:24, Frank Rowand wrote: There is a tool to aid this process: scripts/dtc/dt_to_config. It is not a 100% solution, but it is very helpful. The problem is difficult enough that this tool led to a conference talk. The slides are at https://elinux.org/images/5/50/Dt_debugging_part

Re: [PATCH] fs: dcache: Avoid livelock between d_alloc_parallel and __d_add

On Tue, Feb 13, 2018 at 12:58:51PM +, Will Deacon wrote: > If d_alloc_parallel runs concurrently with __d_add, it is possible for > d_alloc_parallel to continuously retry whilst i_dir_seq has been > incremented to an odd value by __d_add: > > CPU0: > __d_add > n = start_dir_add(dir); >

Re: [PATCH v2] libnvdimm: re-enable deep flush for pmem devices

Dan Williams writes: > On Mon, Feb 12, 2018 at 2:53 PM, Jeff Moyer wrote: >> Dave Jiang writes: >> >>> Re-enable deep flush so that users always have a way to be sure that a write >>> does make it all the way out to the NVDIMM. The PMEM driver writes always >>> make it "all the way to the NVDIM

Re: [PATCH 03/11] fs: Allow superblock owner to change ownership of inodes

On Fri, Dec 22, 2017 at 3:32 PM, Dongsu Park wrote: > From: Eric W. Biederman > > Allow users with CAP_SYS_CHOWN over the superblock of a filesystem to > chown files. Ordinarily the capable_wrt_inode_uidgid check is > sufficient to allow access to files but when the underlying filesystem > has u

Re: [PATCH 2/2] x86/retpoline: Fix return buffer filling

On Tue, Feb 13, 2018 at 12:21:18PM +0100, Borislav Petkov wrote: > On Mon, Feb 12, 2018 at 04:04:22PM -0800, Andi Kleen wrote: > > From: Andi Kleen > > > > An earlier patch moved the RSB filling out of line, ending > > it with a return. This results in the return buffer filling > > only giving 15

Re: [PATCH] x86/cpu, x86/pti: Do not enable PTI on AMD processors

On Mon, 12 Feb 2018, Pavel Machek wrote: > On Tue 2017-12-26 23:43:54, Tom Lendacky wrote: > > AMD processors are not subject to the types of attacks that the kernel > > page table isolation feature protects against. The AMD microarchitecture > > does not allow memory references, including specul

Re: [PATCH] iommu/amd - Use dev_err to send events to the system log

On Tue, Jan 30, 2018 at 07:04:27PM -0600, Gary R Hook wrote: > + dev_err(dev, "ILLEGAL_DEV_TABLE_ENTRY device=%02x:%02x.%x " > + "address=0x%016llx flags=0x%04x]\n", > + PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid), > +

[PATCH 2/2] locking/qspinlock: Ensure node->count is updated before initialising node

When queuing on the qspinlock, the count field for the current CPU's head node is incremented. This needn't be atomic because locking in e.g. IRQ context is balanced and so an IRQ will return with node->count as it found it. However, the compiler could in theory reorder the initialisation of node[

[PATCH 0/2] A couple of qspinlock fixes

Hi all, Here are a couple of fixes for qspinlock issues I've found by code inspection whilst investigating the possibility of enabling this for arm64. The first patch fixes a problem with unusual hardware re-ordering whilst the second fixes a problem with unusual compiler re-ordering. Cheers, Wi

[PATCH 1/2] locking/qspinlock: Ensure node is initialised before updating prev->next

When a locker ends up queuing on the qspinlock locking slowpath, we initialise the relevant mcs node and publish it indirectly by updating the tail portion of the lock word using xchg_tail. If we find that there was a pre-existing locker in the queue, we subsequently update their ->next field to po

Re: Thinkpad X1 Carbon 3rd - Reducing the compressed framebuffer size

On Tue, Feb 13, 2018 at 09:50:30AM +0100, Pali Rohár wrote: > On Tuesday 06 February 2018 16:21:43 Pali Rohár wrote: > > Hi! I'm periodically getting following message in dmesg on Lenovo > > Thinkpad X1 Carbon 3rd generation: > > > > [drm] Reducing the compressed framebuffer size. This may lead to

Re: [tip:x86/pti] Revert "x86/speculation: Simplify indirect_branch_prediction_barrier()"

On Tue, Feb 13, 2018 at 12:28:38PM +0100, Ingo Molnar wrote: > Separate would be better, it makes sense and is one problem less to worry > about? Something like so then? I'm not entirely sure which commit wants to fo in Fixes, I picked the earlier one, but it could equally have been: Fixes: f20

[PATCH] proc: do less stuff under ->pde_unload_lock

Commit ca469f35a8e9ef12571a4b80ac6d7fdc0260fb44 ("deal with races between remove_proc_entry() and proc_reg_release()") moved too much stuff under ->pde_unload_lock making a problem described at series "[PATCH v5] procfs: Improve Scaling in proc" worse. While RCU is being figured out, move kfree()

Re: [PATCH v3 1/5] dt-bindings: media: adv7604: Add support for i2c_new_secondary_device

Hi Kieran, On Tuesday, 13 February 2018 15:14:43 EET Kieran Bingham wrote: > On 13/02/18 12:06, Laurent Pinchart wrote: > > On Tuesday, 13 February 2018 00:07:49 EET Kieran Bingham wrote: > >> From: Jean-Michel Hautbois > >> > >> The ADV7604 has thirteen 256-byte maps that can be accessed via th

[PATCH] atomic/bitops: Clarify ordering semantics for failed test_and_{}_bit()

A test_and_{}_bit() operation fails if the value of the bit is such that the modification does not take place. For example, if test_and_set_bit() returns 1. In these cases, follow the behaviour of cmpxchg and allow the operation to be unordered. This also applies to test_and_set_bit_lock() if the l

Re: [PATCH v3] iommu/amd: Add support for fast IOTLB flushing

Hi Suravee, thanks for working on this. On Wed, Jan 31, 2018 at 12:01:14AM -0500, Suravee Suthikulpanit wrote: > +static void amd_iommu_iotlb_range_add(struct iommu_domain *domain, > + unsigned long iova, size_t size) > +{ > + struct amd_iommu_flush_entries *

Re: [PATCH 1/2] sched/fair: Consider SD_NUMA when selecting the most idle group to schedule on

On Tue, Feb 13, 2018 at 02:04:45PM +0100, Peter Zijlstra wrote: > On Tue, Feb 13, 2018 at 11:35:48AM +, Mel Gorman wrote: > > > However, if we have numa balancing enabled, that will counteract > > > the normal spreading across nodes, so in that regard it makes sense, but > > > the above code is

Re: [linux-sunxi] [PATCH v2] rtc: ac100: Fix ac100 determine rate bug

On Tue, Feb 13, 2018 at 01:14:14PM +0100, Philipp Rossak wrote: > This patch fixes a bug, that prevents the Allwinner A83T and the A80 > from a successful boot. You can find the shortend trace below: Since when is it there? > Unable to handle kernel NULL pointer dereference at virtual address > 0

RE: [PATCH v2] MAINTAINERS: add Freescale pin controllers

Hi Stefan, > -Original Message- > From: Stefan Agner [mailto:ste...@agner.ch] > Sent: Monday, February 12, 2018 11:06 PM > To: linus.wall...@linaro.org; A.s. Dong ; Fabio > Estevam ; shawn...@kernel.org; > ker...@pengutronix.de > Cc: linux-arm-ker...@lists.infradead.org; linux-kernel@vger.

Re: [PATCH 4.9 43/92] x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown

Hi, This does not seem to have subsumed the AMD specific code in x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown Commit a8799fd14d9f7f385a5a5c86cde247caf4bb0320 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=v4.9.81&id=a8799fd14d9f7f385a

Re: lost connection to test machine (4)

On Mon, 2018-02-12 at 12:05 -0800, Tejun Heo wrote: > On Mon, Feb 12, 2018 at 09:03:25AM -0800, Tejun Heo wrote: > > Hello, Daniel. > > > > On Mon, Feb 12, 2018 at 06:00:13PM +0100, Daniel Borkmann wrote: > > > [ +Dennis, +Tejun ] > > > > > > Looks like we're stuck in percpu allocator with key/va

Re: [PATCH 1/3] auxdisplay: charlcd: fix hex literal ranges for graphics command

On Sat, Feb 10, 2018 at 11:41 AM, Miguel Ojeda wrote: > On Sat, Feb 10, 2018 at 10:20 AM, Willy Tarreau wrote: >> On Sat, Feb 10, 2018 at 09:58:44AM +0100, Miguel Ojeda wrote: >>> On Sat, Feb 10, 2018 at 12:50 AM, Robert Abel wrote: >>> > shift ^= 4; >>> >

Re: [PATCH 04/11] fs: Don't remove suid for CAP_FSETID for userns root

On Sat, Dec 23, 2017 at 1:38 PM, Dongsu Park wrote: > Hi, > > On Sat, Dec 23, 2017 at 4:26 AM, Serge E. Hallyn wrote: >> On Fri, Dec 22, 2017 at 03:32:28PM +0100, Dongsu Park wrote: >>> From: Seth Forshee >>> >>> Expand the check in should_remove_suid() to keep privileges for >> >> I realize thi

[PATCH 4/6] sched/fair: Do not migrate due to a sync wakeup on exit

From: Peter Zijlstra When a task exits, it notifies the parent that it has exited. This is a sync wakeup and the exiting task may pull the parent towards the wakers CPU. For simple workloads like using a shell, it was observed that the shell is pulled across nodes by exiting processes. This is da

Re: [PATCH v7 1/6] base: power: runtime: Export pm_runtime_get/put_suppliers

On 13/02/18 12:54, Tomasz Figa wrote: On Tue, Feb 13, 2018 at 9:00 PM, Robin Murphy wrote: On 13/02/18 07:44, Tomasz Figa wrote: Hi Vivek, On Wed, Feb 7, 2018 at 7:31 PM, Vivek Gautam wrote: The device link allows the pm framework to tie the supplier and consumer. So, whenever the consume

Re: [tip:x86/pti] Revert "x86/speculation: Simplify indirect_branch_prediction_barrier()"

* Peter Zijlstra wrote: > On Tue, Feb 13, 2018 at 12:28:38PM +0100, Ingo Molnar wrote: > > > Separate would be better, it makes sense and is one problem less to worry > > about? > > Something like so then? Yeah, perfect! > I'm not entirely sure which commit wants to fo in Fixes, I picked th

[PATCH 2/6] sched/fair: Defer calculation of prev_eff_load in wake_affine until needed

On sync wakeups, the previous CPU effective load may not be used so delay the calculation until it's needed. Signed-off-by: Mel Gorman --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 4b3e86eb..c1091cb

[PATCH 1/6] sched/fair: Avoid an unnecessary lookup of current CPU ID during wake_affine

The only caller of wake_affine() knows the CPU ID. Pass it in instead of rechecking it. Signed-off-by: Mel Gorman --- kernel/sched/fair.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 5eb3ffc9be84..4b3e86eb 100644 ---

Re: Thinkpad X1 Carbon 3rd - Reducing the compressed framebuffer size

On Tuesday 13 February 2018 15:27:26 Ville Syrjälä wrote: > On Tue, Feb 13, 2018 at 09:50:30AM +0100, Pali Rohár wrote: > > On Tuesday 06 February 2018 16:21:43 Pali Rohár wrote: > > > Hi! I'm periodically getting following message in dmesg on Lenovo > > > Thinkpad X1 Carbon 3rd generation: > > >

[PATCH 0/6] Reduce migrations and conflicts with automatic NUMA balancing v2

This is a combination of "Reduce migrations due to load imbalance and process exits" and "Stop wake_affine fighting with automatic NUMA balancing" series. There was a request for data on NAS OMP and how it compares with hard-binding of threads to CPUs that is included in the changelog for the rele

[PATCH] perf tests: Use arch__compare_symbol_names to compare symbols

The symbol search called by machine__find_kernel_symbol_by_name is using internally arch__compare_symbol_names function to compare 2 symbol names, because different archs have different ways of comparing symbols. Mostly for skipping '.' prefixes and similar. In test 1 when we try to find matching

[PATCH 3/6] sched/fair: Do not migrate on wake_affine_weight if weights are equal

wake_affine_weight() will consider migrating a task to, or near, the current CPU if there is a load imbalance. If the CPUs share LLC then either CPU is valid as a search-for-idle-sibling target and equally appropriate for stacking two tasks on one CPU if an idle sibling is unavailable. If they do n

[PATCH 5/6] sched/fair: Consider SD_NUMA when selecting the most idle group to schedule on

find_idlest_group() compares a local group with each other group to select the one that is most idle. When comparing groups in different NUMA domains, a very slight imbalance is enough to select a remote NUMA node even if the runnable load on both groups is 0 or close to 0. This ignores the cost of

[PATCH 6/6] sched/numa: Delay retrying placement for automatic NUMA balance after wake_affine

If wake_affine pulls a task to another node for any reason and the node is no longer preferred then temporarily stop automatic NUMA balancing pulling the task back. Otherwise, tasks with a strong waker/wakee relationship may constantly fight automatic NUMA balancing over where a task should be plac

Re: [PATCH v4] iommu/mediatek: Move attach_device after iommu-group is ready for M4Uv1

On Fri, Jan 26, 2018 at 03:11:28PM +0800, Yong Wu wrote: > --- > drivers/iommu/mtk_iommu_v1.c | 54 > +--- > 1 file changed, 21 insertions(+), 33 deletions(-) Applied, thanks.

Re: [PATCH 1/2] net: phy: dp83867: Add binding for the CLK_OUT pin muxing option

On Tue, Feb 13, 2018 at 10:42:31AM +0100, Daniel Schultz wrote: > From: Wadim Egorov > > The DP83867 has a muxing option for the CLK_OUT pin. It is possible > to set CLK_OUT for different channels. > Create a binding to select a specific clock for CLK_OUT pin. > > Signed-off-by: Wadim Egorov >

Re: [linux-sunxi] [PATCH v2] rtc: ac100: Fix ac100 determine rate bug

On Tue, Feb 13, 2018 at 9:32 PM, Maxime Ripard wrote: > On Tue, Feb 13, 2018 at 01:14:14PM +0100, Philipp Rossak wrote: >> This patch fixes a bug, that prevents the Allwinner A83T and the A80 >> from a successful boot. You can find the shortend trace below: > > Since when is it there? > >> Unable

Re: [PATCH 0/2] A couple of qspinlock fixes

On Tue, Feb 13, 2018 at 01:22:55PM +, Will Deacon wrote: > Hi all, > > Here are a couple of fixes for qspinlock issues I've found by code > inspection whilst investigating the possibility of enabling this for > arm64. The first patch fixes a problem with unusual hardware re-ordering > whilst t

Re: [PATCH 1/1] nvme: implement log page low/high offset and dwords

On Tue, 2018-02-13 at 13:49 +0100, Matias Bjørling wrote: > +int nvme_get_log_ext(struct nvme_ctrl *ctrl, struct nvme_ns *ns, > + u8 log_page, void *log, > + size_t size, size_t offset) > +{ > + struct nvme_command c = { }; > + unsigned long d

Re: [PATCH] atomic/bitops: Clarify ordering semantics for failed test_and_{}_bit()

On Tue, Feb 13, 2018 at 01:30:19PM +, Will Deacon wrote: > A test_and_{}_bit() operation fails if the value of the bit is such that > the modification does not take place. For example, if test_and_set_bit() > returns 1. In these cases, follow the behaviour of cmpxchg and allow the > operation t

Re: [PATCH 3/4] drm/tve200: Do not use deprecated drm_driver.{enable|disable)_vblank

On Mon, Feb 12, 2018 at 9:52 AM, Oleksandr Andrushchenko wrote: > From: Oleksandr Andrushchenko > > Do not use deprecated drm_driver.{enable|disable)_vblank callbacks, > but use drm_simple_kms_helpe's pipe callbacks instead. > > Signed-off-by: Oleksandr Andrushchenko > Cc: Linus Walleij The n

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