Re: [PATCH] mfd: Add support for TI LMP92001

On Wed, Aug 30, 2017 at 2:58 AM, Abhisit Sangjan wrote: > Hi Rob, > > On Sat, Aug 26, 2017 at 1:35 AM, Rob Herring wrote: >> >> On Tue, Aug 22, 2017 at 01:26:11PM +0700, s.abhi...@gmail.com wrote: >> > From: Abhisit Sangjan >> > >> > TI

Re: [PATCH V6 00/18] blk-throttle: add .low limit

On Thu, Aug 31, 2017 at 09:24:23AM +0200, Paolo VALENTE wrote: > > > Il giorno 15 gen 2017, alle ore 04:42, Shaohua Li ha scritto: > > > > Hi, > > > > cgroup still lacks a good iocontroller. CFQ works well for hard disk, but > > not > > much for SSD. This patch set try to add a

Re: [PATCH] f2fs: fix wrong bfree and bavail

On Sep 5, 2017, at 3:06 PM, Jaegeuk Kim wrote: > > This patch fixes bavail and bfree finally. > > longf_bfree;/* free blocks in fs */ > longf_bavail; /* free blocks avail to non-superuser */ > > So, bfree represents all the reserved blocks, while bavail does

[PATCH v2 1/2] ARM: owl: smp: Use __pa_symbol()

Replace an occurrence of virt_to_phys() with __pa_symbol() macro. See 64fc2a947a9873700929ec0ef02b4654a04e0476 ("ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol"). Fixes: 172067e0bc87 ("ARM: owl: Implement CPU enable-method for S500") Reported-by: Florian Fainelli

[PATCH v2 2/2] ARM: owl: smp: Drop owl_secondary_boot()

Commit 18cfd9429d8a82c49add8f3ca9d366599bfcac45 simplified the S500 SMP code by removing a loop for pen_release in owl_secondary_boot(). Since then it is only calling owl_v7_invalidate_l1() before branching to secondary_startup(). The owl_v7_invalidate_l1() assembler function is superfluous,

[PATCH v2 0/2] ARM: Actions Semi S500 SMP cleanups

Hello, This mini-series further cleans up the SMP code for Actions Semi S500 SoC. @David, can you please reply with an Acked-by for the second patch? Thanks! Work branch for testing: https://github.com/afaerber/linux/commits/bg96-next Have a lot of fun! Cheers, Andreas v1 -> v2: * Prepended

Re: [PATCH net-next 1/2] tun: reserve extra headroom only when XDP is set

From: Jason Wang Date: Mon, 4 Sep 2017 11:36:08 +0800 > We reserve headroom unconditionally which could cause unnecessary > stress on socket memory accounting because of increased trusesize. Fix > this by only reserve extra headroom when XDP is set. > > Cc: Jakub Kicinski

[PATCH v2 37/40] tracing: Add inter-event hist trigger Documentation

Add background and details on inter-event hist triggers, including hist variables, synthetic events, and actions. Signed-off-by: Tom Zanussi Signed-off-by: Baohong Liu --- Documentation/trace/events.txt | 385

[PATCH v2 35/40] tracing: Reverse the order event_mutex/trace_types_lock are taken

Change the order event_mutex and trace_types_lock are taken, to avoid circular dependencies and lockdep spew. Changing the order shouldn't matter to any current code, but does to anything that takes the event_mutex first and then trace_types_lock. This is the case when calling tracing_set_clock

[PATCH v2 27/40] tracing: Add support for 'synthetic' events

Synthetic events are user-defined events generated from hist trigger variables saved from one or more other events. To define a synthetic event, the user writes a simple specification consisting of the name of the new event along with one or more variables and their type(s), to the

[PATCH v2 38/40] tracing: Make tracing_set_clock() non-static

Allow tracing code outside of trace.c to access tracing_set_clock(). Some applications may require a particular clock in order to function properly, such as latency calculations. Also, add an accessor returning the current clock string. Signed-off-by: Tom Zanussi

[PATCH v2 28/40] tracing: Add support for 'field variables'

Users should be able to directly specify event fields in hist trigger 'actions' rather than being forced to explicitly create a variable for that purpose. Add support allowing fields to be used directly in actions, which essentially does just that - creates 'invisible' variables for each bare

Re: [RFC/PATCH] drivers/of/platform: Add powerpc 4xx embedded busses to default list

On Tue, 2017-09-05 at 09:25 -0500, Rob Herring wrote: > > So in the meantime, I'm thinking adding some kind of runtime way > > of disabling this default populate. Would you be ok with that ? > > > > Something like: > > > > bool arch_wants_of_platform_defaults(void) > > > > With a weak

[PATCH v2 36/40] tracing: Remove lookups from tracing_map hitcount

Lookups inflate the hitcount, making it essentially useless. Only inserts and updates should really affect the hitcount anyway, so explicitly filter lookups out. Signed-off-by: Tom Zanussi --- kernel/trace/tracing_map.c | 3 ++- 1 file changed, 2 insertions(+), 1

[PATCH v2 02/40] tracing: Add support to detect and avoid duplicates

From: Vedang Patel A duplicate in the tracing_map hash table is when 2 different entries have the same key and, as a result, the key_hash. This is possible due to a race condition in the algorithm. This race condition is inherent to the algorithm and not a bug. This was

[PATCH v2 13/40] tracing: Make traceprobe parsing code reusable

traceprobe_probes_write() and traceprobe_command() actually contain nothing that ties them to kprobes - the code is generically useful for similar types of parsing elsewhere, so separate it out and move it to trace.c/trace.h. Other than moving it, the only change is in naming:

Re: [PATCH 6/10] ixgbe: Use ARRAY_SIZE macro

On Tue, Sep 05, 2017 at 11:50:44AM -0700, David Miller wrote: > From: Thomas Meyer > Date: Sun, 03 Sep 2017 14:19:31 +0200 > > > Use ARRAY_SIZE macro, rather than explicitly coding some variant of it > > yourself. > > Found with: find -type f -name "*.c" -o -name "*.h" | xargs

Re: n900 in next-20170901

gt; Unable to handle kernel paging request at virtual address ce80 > pgd = c0004000 [ce80] *pgd= > Internal error: Oops: 805 [#1] SMP ARM > Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-next-20170905+ #662 > Hardware name: Nokia RX-51 board >

[PATCH] e1000e: changed some expensive calls of udelay to usleep_range

Calls to udelay are not preemtable by userspace so userspace applications experience a large (~200us) latency when running on core0. Instead usleep_range can be used to be more friendly to userspace since it is preemtable. This is due to udelay using busy-wait loops while usleep_rang uses

Re: [PATCH] md/raid5: preserve STRIPE_ON_UNPLUG_LIST in break_stripe_batch_list

On Fri, Sep 01, 2017 at 05:26:48PM +0800, Dennis Yang wrote: > >On Mon, Aug 28, 2017 at 08:01:59PM +0800, Dennis Yang wrote: > >> break_stripe_batch_list() did not preserve STRIPE_ON_UNPLUG_LIST which is > >> set when a stripe_head gets queued to the stripe_head list maintained by > >>

[PATCH 2/2] ALSA: rme9652: Use common error handling code in snd_hdspm_probe()

From: Markus Elfring Date: Tue, 5 Sep 2017 22:22:21 +0200 Add a jump target so that a bit of exception handling can be better reused at the end of this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring

Re: [PATCH] f2fs: fix wrong bfree and bavail

On 2017/9/6 5:06, Jaegeuk Kim wrote: > This patch fixes bavail and bfree finally. > > longf_bfree;/* free blocks in fs */ > longf_bavail; /* free blocks avail to non-superuser */ > > So, bfree represents all the reserved blocks, while bavail does the space only > visible to normal

[PATCH 1/3] KVM: SVM: Refactor AVIC vcpu initialization into avic_init_vcpu()

Preparing the base code for subsequent changes. This does not change existing logic. Signed-off-by: Suravee Suthikulpanit --- arch/x86/kvm/svm.c | 28 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/arch/x86/kvm/svm.c

[PATCH 2/3] KVM: Add struct kvm_vcpu pointer parameter to get_enable_apicv()

Modify struct kvm_x86_ops.arch.apicv_active() to take struct kvm_vcpu pointer as parameter in preparation to subsequent changes. Signed-off-by: Suravee Suthikulpanit --- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/svm.c | 2 +-

[PATCH 0/3] KVM: SVM: Fix guest not booting w/ AVIC enabled

Certain QEMU options fails to boot VM guest w/ SVM AVIC enabled (e.g. modprobe kvm_amd avic=1). Investigation shows that this mainly due to AVIC hardware does not trap into hypervisor when guest OS writes to APIC_EOI register. The boot hang is caused by missing timer interrupt when using

Re: [PATCH 23/25 v3] ALSA/dummy: Replace tasklet with softirq hrtimer

On Sep 6 2017 01:18, Sebastian Andrzej Siewior wrote: From: Thomas Gleixner The tasklet is used to defer the execution of snd_pcm_period_elapsed() to the softirq context. Using the CLOCK_MONOTONIC_SOFT base invokes the timer callback in softirq context as well which renders

Re: [PATCH 4/4][RFC v2] x86/apic: Spread the vectors by choosing the idlest CPU

On Wed, Sep 06, 2017 at 12:57:41AM +0200, Thomas Gleixner wrote: > On Sun, 3 Sep 2017, Thomas Gleixner wrote: > > > On Fri, 1 Sep 2017, Chen Yu wrote: > > > > > This is the major logic to spread the vectors on different CPUs. > > > The main idea is to choose the 'idlest' CPU which has assigned >

UBSAN: Undefined error in time.h signed integer overflow

Hi, I encountered this bug while fuzzing linux kernel 4.13-rc7 with syzkaller. UBSAN: Undefined behaviour in ./include/linux/time.h:233:27 signed integer overflow: 8391720337152500783 * 10 cannot be

Re: UBSAN: Undefined error in time.h signed integer overflow

On Tue, Sep 5, 2017 at 9:30 PM, Shankara Pailoor wrote: > Hi, > > I encountered this bug while fuzzing linux kernel 4.13-rc7 with syzkaller. > > > UBSAN: Undefined behaviour in

[PATCH 1/2] dt-bindings: watchdog: Add Spreadtrum watchdog documentation

This patch adds the documentation for Spreadtrum watchdog driver. Signed-off-by: Eric Long --- .../devicetree/bindings/watchdog/sprd-wdt.txt | 19 +++ 1 file changed, 19 insertions(+) create mode 100644

[PATCH 2/2] watchdog: Add Spreadtrum watchdog driver

This patch adds the watchdog driver for Spreadtrum SC9860 platform. Signed-off-by: Eric Long --- drivers/watchdog/Kconfig| 8 + drivers/watchdog/Makefile | 1 + drivers/watchdog/sprd_wdt.c | 366 3 files changed,

Re: [PATCH] f2fs: fix wrong bfree and bavail

On 09/06, Chao Yu wrote: > On 2017/9/6 5:06, Jaegeuk Kim wrote: > > This patch fixes bavail and bfree finally. > > > > longf_bfree;/* free blocks in fs */ > > longf_bavail; /* free blocks avail to non-superuser */ > > > > So, bfree represents all the reserved blocks, while bavail

Re: [PATCH RFC v3 0/4] Add cross-compilation support to eBPF samples

On Sun, Sep 03, 2017 at 11:23:21AM -0700, Joel Fernandes wrote: > These patches fix issues seen when cross-compiling eBPF samples on arm64. > Compared to [1], I dropped the controversial inline-asm patch pending further > discussion on the right way to do it. However these patches are still a step

[PATCH 1/1] workqueue: use type int instead of bool to index array

From: zijun_hu type bool is used to index three arrays in alloc_and_link_pwqs() it doesn't look like conventional. it is fixed by using type int to index the relevant arrays. Signed-off-by: zijun_hu --- kernel/workqueue.c | 9 + 1 file changed, 5

Re: [PATCH v8 06/13] x86/apic: Mark the apic_intr_mode extern for sanity check cleanup

On 08/28/17 at 11:20am, Dou Liyang wrote: > Calling native_smp_prepare_cpus() to prepare for SMP bootup, does > some sanity checking, enables APIC mode and disables SMP feature. > > Now, APIC mode setup has been unified to apic_intr_mode_init(), > some sanity checks are redundant and need to be

UBSAN: Undefined error in log2.h

Hi, I am hitting this bug when running the syzkaller fuzzer on kernel 4.13-rc7 Syzkaller hit 'UBSAN: Undefined behaviour in ./include/linux/log2.h:LINE' bug. Guilty file: fs/pipe.c Maintainers: [] UBSAN: Undefined behaviour in ./include/linux/log2.h:57:13 shift exponent 64 is too large for

Re: [PATCH] arm64: KVM: VHE: save and restore some PSTATE bits

CC Catalin On 2017/9/6 2:58, gengdongjiu wrote: > when exit from guest, some host PSTATE bits may be lost, such as > PSTATE.PAN or PSTATE.UAO. It is because host and hypervisor all run > in the EL2, host PSTATE value cannot be saved and restored via > SPSR_EL2. So if guest has changed the

Re: [PATCH v2 0/8] MT2712 IOMMU SUPPORT

On Tue, 2017-08-22 at 22:38 +0800, Joerg Roedel wrote: > On Mon, Aug 21, 2017 at 07:00:13PM +0800, Yong Wu wrote: > > Yong Wu (8): > > dt-bindings: mediatek: Add binding for mt2712 IOMMU and SMI > > iommu/mediatek: Move MTK_M4U_TO_LARB/PORT into mtk_iommu.c > > iommu/mediatek: Add mt2712

Re: [PATCH v8 06/13] x86/apic: Mark the apic_intr_mode extern for sanity check cleanup

Hi Baoquan, At 09/06/2017 01:26 PM, Baoquan He wrote: [...] static void __init smp_cpu_index_default(void) @@ -1335,19 +1295,20 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) Please also cleanup the passed in max_cpus since it's not used here any more. And up to the caller:

[PATCH] drivers/iommu/tegra: Optimize mutex_unlock function call

Code can be optimized more by making single exit point of function and calling mutex_unlock at the end Signed-off-by: Pushkar Jambhlekar --- drivers/iommu/tegra-smmu.c | 8 +--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c

Re: [PATCH v2] md/raid5: preserve STRIPE_ON_UNPLUG_LIST in break_stripe_batch_list

On Wed, Sep 06, 2017 at 11:02:35AM +0800, Dennis Yang wrote: > In release_stripe_plug(), if a stripe_head has its STRIPE_ON_UNPLUG_LIST > set, it indicates that this stripe_head is already in the raid5_plug_cb > list and release_stripe() would be called instead to drop a reference > count.

[PATCH v2] md/raid5: preserve STRIPE_ON_UNPLUG_LIST in break_stripe_batch_list

In release_stripe_plug(), if a stripe_head has its STRIPE_ON_UNPLUG_LIST set, it indicates that this stripe_head is already in the raid5_plug_cb list and release_stripe() would be called instead to drop a reference count. Otherwise, the STRIPE_ON_UNPLUG_LIST bit would be set for this stripe_head

kvm: use-after-free in irq_bypass_register_consumer

Got the following report while fuzzing 4.9.47. It seems that this bug has been reported by Dmitry Vyukov [https://lkml.org/lkml/2017/1/27/828] But I still can reproduce the bug on latest Ubuntu1604 (4.4.0-94-generic) PoC:

[PATCH 3/3] KVM: SVM: Add irqchip_split() checks before enabling AVIC

SVM AVIC hardware accelerates guest write to APIC_EOI register (for edge-trigger interrupt), which means it does not trap to KVM. So, only enable SVM AVIC only in split irqchip mode. (e.g. launching qemu w/ option '-machine kernel_irqchip=split'). Suggested-by: Paolo Bonzini

Re: [PATCH 3/3] f2fs: support flexible inline xattr size

Hi Jaegeuk, Do we have time to test and stabilize this new feature before merge window? Thanks, On 2017/9/4 18:58, Chao Yu wrote: > Now, in product, more and more features based on file encryption were > introduced, their demand of xattr space is increasing, however, inline > xattr has

SME/32-bit regression

It appears there is a regression for 32-bit kernels due to SME changes. I bisected my particular problem (Xen PV guest) to 21729f81ce8ae76a6995681d40e16f7ce8075db4 but I also saw pmd_clear_bad() errors on baremetal. This seems to be caused by sme_me_mask being an unsigned long as opposed to

Re: [PATCH 4/4][RFC v2] x86/apic: Spread the vectors by choosing the idlest CPU

Thanks for looking at this, (please bear my slow response as I need to check related code before replying.) On Sun, Sep 03, 2017 at 08:17:04PM +0200, Thomas Gleixner wrote: > On Fri, 1 Sep 2017, Chen Yu wrote: > > > This is the major logic to spread the vectors on different CPUs. > > The main

[PATCH] mm/page_alloc: don't reserve ZONE_HIGHMEM for ZONE_MOVABLE request

From: Joonsoo Kim Freepage on ZONE_HIGHMEM doesn't work for kernel memory so it's not that important to reserve. When ZONE_MOVABLE is used, this problem would theorectically cause to decrease usable memory for GFP_HIGHUSER_MOVABLE allocation request which is mainly used

[PATCH] drivers/staging/pi433: Fixing coding guidelines

Fix brace style of if-else case Signed-off-by: Pushkar Jambhlekar --- drivers/staging/pi433/pi433_if.c | 162 +-- 1 file changed, 54 insertions(+), 108 deletions(-) diff --git a/drivers/staging/pi433/pi433_if.c

linux-next: manual merge of the devicetree tree with Linus' tree

Hi Rob, Today's linux-next merge of the devicetree tree got a conflict in: Documentation/devicetree/bindings/net/brcm,bgmac-nsp.txt between commit: ea6c3077678f ("dt-bindings: net: Remove duplicate NSP Ethernet MAC binding document") from Linus' tree and commit: 4da722ca19f3

Re: [PATCH v3 2/2] ip6_tunnel: fix ip6 tunnel lookup in collect_md mode

On 9/4/17 1:36 AM, Haishuang Yan wrote: In collect_md mode, if the tun dev is down, it still can call __ip6_tnl_rcv to receive on packets, and the rx statistics increase improperly. Fixes: 8d79266bc48c ("ip6_tunnel: add collect_md mode to IPv6 tunnels") Cc: Alexei Starovoitov

Re: [PATCH] gpio: thunderx: select IRQ_DOMAIN_HIERARCHY instead of depends on

Hi David, 2017-09-06 11:09 GMT+09:00 David Daney : > On 09/05/2017 06:40 PM, Masahiro Yamada wrote: >> >> IRQ_DOMAIN_HIERARCHY is not user-configurable, but supposed to be >> selected by drivers that need IRQ domain hierarchy support. >> >> GPIO_THUNDERX is the only

[PATCH v2] arm: dts: artpec6: Remove unnecessary interrupt-parent property from sub-nodes

net. Signed-off-by: Surender Polsani <surend...@techveda.org> Acked-by: Niklas Cassel <niklas.cas...@axis.com> --- Changes for v2: - Done few changes as suggested by Niklas Cassel. - Patch is rebased and built(ARCH=arm) on latest next-20170905. --- arch/arm/boot/dts/artpec6.dtsi | 3 ---

Re: [PATCH v3 2/3] arm: dts: add Nuvoton NPCM750 device tree

On Wed, Sep 6, 2017 at 10:00 AM, Brendan Higgins wrote: > +++ b/Documentation/devicetree/bindings/arm/npcm/npcm.txt > @@ -0,0 +1,6 @@ > +NPCM Platforms Device Tree Bindings > +--- > +NPCM750 SoC > +Required root node properties: > +

linux-next: manual merge of the devicetree tree with the sound tree

Hi all, Today's linux-next merge of the devicetree tree got a conflict in: Documentation/devicetree/bindings/sound/rockchip,pdm.txt between commit: fce7358b54c6 ("ASoC: rockchip: separate pinctrl pins from each other") from the sound tree and commit: 4da722ca19f3 ("dt-bindings: Remove

Re: [f2fs-dev] [PATCH 1/2] f2fs: introduce f2fs_encrypted_file for clean-up

On 2017/9/6 8:15, Jaegeuk Kim wrote: > This patch replaces (f2fs_encrypted_inode() && S_ISREG()) with > f2fs_encrypted_file(), which gives no functional change. > > Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu Thanks, > --- > fs/f2fs/data.c | 10

Re: [f2fs-dev] [PATCH 2/2] f2fs: use generic terms used for encrypted block management

On 2017/9/6 8:15, Jaegeuk Kim wrote: > This patch renames functions regarding to buffer management via META_MAPPING > used for encrypted blocks especially. We can actually use them in generic way. Meta inode cache is more like bd_inode cache now. ;) Reviewed-by: Chao Yu

Re: [PATCH] md/raid5: preserve STRIPE_ON_UNPLUG_LIST in break_stripe_batch_list

> On Fri, Sep 01, 2017 at 05:26:48PM +0800, Dennis Yang wrote: > > >On Mon, Aug 28, 2017 at 08:01:59PM +0800, Dennis Yang wrote: > > >> break_stripe_batch_list() did not preserve STRIPE_ON_UNPLUG_LIST which is > > >> set when a stripe_head gets queued to the stripe_head list maintained by > > >>

Re: [PATCH] f2fs: fix wrong bfree and bavail

On 2017/9/6 11:10, Jaegeuk Kim wrote: > On 09/06, Chao Yu wrote: >> On 2017/9/6 5:06, Jaegeuk Kim wrote: >>> This patch fixes bavail and bfree finally. >>> >>> longf_bfree;/* free blocks in fs */ >>> longf_bavail; /* free blocks avail to non-superuser */ >>> >>> So, bfree represents

Re: [PATCH RFC v3 0/4] Add cross-compilation support to eBPF samples

Hi Alexei, On Tue, Sep 5, 2017 at 8:24 PM, Alexei Starovoitov wrote: > On Sun, Sep 03, 2017 at 11:23:21AM -0700, Joel Fernandes wrote: >> These patches fix issues seen when cross-compiling eBPF samples on arm64. >> Compared to [1], I dropped the controversial

Re: [PATCH v8 01/13] x86/apic: Construct a selector for the interrupt delivery mode

Hi Baoquan, Thanks for your reply! My answer is in below. At 09/06/2017 08:55 AM, Baoquan He wrote: Hi Liyang, On 08/28/17 at 11:20am, Dou Liyang wrote: Now, there are many switches in kernel which are used to determine the final interrupt delivery mode, as shown below: 1) kconfig:

[PATCH 1/2] mm/slub: wake up kswapd for initial high order allocation

From: Joonsoo Kim slub uses higher order allocation than it actually needs. In this case, we don't want to do direct reclaim to make such a high order page since it causes a big latency to the user. Instead, we would like to fallback lower order allocation that it

[PATCH 2/2] mm/slub: don't use reserved memory for optimistic try

From: Joonsoo Kim High-order atomic allocation is difficult to succeed since we cannot reclaim anything in this context. So, we reserves the pageblock for this kind of request. In slub, we try to allocate higher-order page more than it actually needs in order to get the

Abysmal scheduler performance in Linus' tree?

I'm running e7d0c41ecc2e372a81741a30894f556afec24315 from Linus' tree today, and I'm seeing abysmal scheduler performance. Running make -j4 ends up with all the tasks on CPU 3 most of the time (on my 4-logical-thread laptop). taskset -c 0 whatever puts whatever on CPU 0, but plain while true; do

[PATCH 2/3] locking/rwsem/x86: Add stack frame dependency for __up_write()

kernel/locking/rwsem.o: warning: objtool: up_write()+0x17: call without frame pointer save/setup The warning means gcc 7.2.0 placed the __up_write() inline asm (and its call instruction) before the frame pointer setup in up_write(), which breaks frame pointer convention and can result in

[PATCH 1/3] locking/rwsem/x86: Add stack frame dependency for __up_read()

kernel/locking/rwsem.o: warning: objtool: up_read()+0x11: call without frame pointer save/setup The warning means gcc 7.2.0 placed the __up_read() inline asm (and its call instruction) before the frame pointer setup in up_read(), which breaks frame pointer convention and can result in incorrect

Re: [PATCH v8 06/13] x86/apic: Mark the apic_intr_mode extern for sanity check cleanup

On 09/06/17 at 12:25pm, Baoquan He wrote: > On 08/28/17 at 11:20am, Dou Liyang wrote: > > - /* > > * Should not be necessary because the MP table should list the boot > > * CPU too, but we do it for the sake of robustness anyway. > > */ > > @@ -1254,29 +1237,6 @@ static int __init

Re: [RFC v2 6/6] platform/x86: intel_pmc_ipc: Use generic Intel IPC device calls

Hi Lee, On 9/5/2017 12:38 AM, Lee Jones wrote: On Sat, 02 Sep 2017, sathyanarayanan.kuppusw...@linux.intel.com wrote: From: Kuppuswamy Sathyanarayanan Removed redundant IPC helper functions and refactored the driver to use generic IPC device

[PATCH 3/3] locking/rwsem/x86: Add stack frame dependency for __downgrade_write()

kernel/locking/rwsem.o: warning: objtool: downgrade_write()+0x22: call without frame pointer save/setup The warning means gcc 7.2.0 placed the __downgrade_write() inline asm (and its call instruction) before the frame pointer setup in downgrade_write(), which breaks frame pointer convention and

[PATCH 0/3] locking/rwsem/x86: Add stack frame dependency for some inline asm

Some warning were showed by objtool using gcc 7.2.0 kernel/locking/rwsem.o: warning: objtool: up_read()+0x11: call without frame pointer save/setup kernel/locking/rwsem.o: warning: objtool: up_write()+0x17: call without frame pointer save/setup kernel/locking/rwsem.o: warning: objtool:

linux-next: Tree for Sep 6

Hi all, Please do not add any v4.15 related material to your linux-next included branches until after v4.14-rc1 has been released. Changes since 20170905: The devicetree tree gained conflicts against Linus' and the sound trees. The akpm-current tree lost its build failure. Non-merge commits

Re: a competition when some threads acquire futex

On Tue, 5 Sep 2017, chengjian (D) wrote: > int main(int argc, char** argv) > { > pthread_t id1; > pthread_t id2; > > printf("main pid = %d\n", getpid( )); > > pthread_mutex_init(, NULL); So this is a plain mutex, which maps to a plain futex. > use perf ftrace

Re: [PATCH] string.h: un-fortify memcpy_and_pad

On Tue, Sep 5, 2017 at 8:23 PM, Martin Wilck wrote: > The way I'd implemented the new helper memcpy_and_pad with > __FORTIFY_INLINE caused compiler warnings for certain kernel > configurations. > > This helper is only used in a single place at this time, and thus > doesn't

Re: 915f3e3f76 ("mac80211_hwsim: Replace bogus hrtimer clockid"): BUG: kernel reboot-without-warning in test stage

On Tue, 5 Sep 2017, Sebastian Andrzej Siewior wrote: > On 2017-09-05 09:12:40 [+0200], Thomas Gleixner wrote: > > Sorry, no. That bisect is completely bogus. The commit in question merily > > replaces the unsupported clockid with a valid one. > > The bisect is correct. It just has problems to

Re: [PATCH] media: leds: as3645a: add V4L2_FLASH_LED_CLASS depdendency

Hi Arnd, Thanks for the patch. On 09/05/2017 09:13 AM, Arnd Bergmann wrote: > We get a link error when V4L2_FLASH_LED_CLASS=m and AS3645A is built-in: > > drivers/leds/leds-as3645a.o: In function `as3645a_v4l2_setup': > leds-as3645a.c:(.text+0x258): undefined reference to `v4l2_flash_init' >

Re: [PATCH 0/6] Cache coherent device memory (CDM) with HMM v5

On Thu, Jul 20, 2017 at 08:48:20PM -0700, Dan Williams wrote: > On Thu, Jul 20, 2017 at 6:41 PM, Jerome Glisse wrote: > > On Fri, Jul 21, 2017 at 09:15:29AM +0800, Bob Liu wrote: > >> On 2017/7/20 23:03, Jerome Glisse wrote: > >> > On Wed, Jul 19, 2017 at 05:09:04PM +0800, Bob

Re: [GIT PULL] x86/mm changes for v4.14: PCID support, 5-level paging support, Secure Memory Encryption support

On Mon, Sep 4, 2017 at 2:31 AM, Ingo Molnar wrote: > > Please pull the latest ... git tree from: > >git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ... Hmm. My laptop (XPS 13) doesn't resume any more. It suspends, but doesn't come back from resume. I immediately

Re: [GIT PULL] x86/mm changes for v4.14: PCID support, 5-level paging support, Secure Memory Encryption support

* Linus Torvalds wrote: > On Mon, Sep 4, 2017 at 2:31 AM, Ingo Molnar wrote: > > > > Please pull the latest ... git tree from: > > > >git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ... > > Hmm. My laptop (XPS 13) doesn't resume

Re: [PATCH net V2] vhost_net: correctly check tx avail during rx busy polling

From: Jason Wang Date: Tue, 5 Sep 2017 09:22:05 +0800 > We check tx avail through vhost_enable_notify() in the past which is > wrong since it only checks whether or not guest has filled more > available buffer since last avail idx synchronization which was just > done by

Re: [PATCH] tools: hv: handle EINTR in hv_fcopy_daemon

On Tue, Sep 05, KY Srinivasan wrote: > Were you planning on sending a patch for this. No, not yet. I dont know how SA_RESTART works. Olaf signature.asc Description: PGP signature

Re: [PATCH v3 06/11] perf, tools, stat: Support JSON metrics in perf stat

> > I'll check. > > Ok, I couldn't reproduce it anymore, after you check this, please let me > know if I should pull that perf/intel-json-metrics-2 branch so that > someone wanting to test this can have it all in one place, ok? Sure please pull. The only missing thing are metrics for Skylake

[GIT PULL] pstore updates for v4.14-rc1

Hi, Please pull these pstore changes for v4.14-rc1. Not much happening in pstore for this release. One change to permission management, noted below. Thanks! -Kees The following changes since commit 520eccdfe187591a51ea9ab4c1a024ae4d0f68d9: Linux 4.13-rc2 (2017-07-23 16:15:17 -0700) are

Re: [PATCH v1] selftests: Enhance kselftest_harness.h to print which assert failed

On 28/08/2017 18:42, Shuah Khan wrote: > On 08/06/2017 05:23 PM, Mickaël Salaün wrote: >> When a test process is not able to write to TH_LOG_STREAM, this step >> mechanism enable to print the assert number which triggered the failure. >> This can be enabled by setting _metadata->no_print to true

Re: [PATCH] asm-generic/io.h: remove unnecessary include of linux/vmalloc.h

On Tue, Sep 5, 2017 at 5:21 PM, Tobias Klauser wrote: > On 2017-09-05 at 17:11:50 +0200, Arnd Bergmann wrote: >> On Tue, Sep 5, 2017 at 1:27 PM, Tobias Klauser wrote: >> > Including linux/vmalloc.h in asm-generic/io.h isn't necessary

Re: [PATCH 6/10] ixgbe: Use ARRAY_SIZE macro

From: Joe Perches Date: Tue, 05 Sep 2017 13:01:18 -0700 > On Tue, 2017-09-05 at 21:45 +0200, Thomas Meyer wrote: >> On Tue, Sep 05, 2017 at 11:50:44AM -0700, David Miller wrote: >> > From: Thomas Meyer >> > Date: Sun, 03 Sep 2017 14:19:31 +0200 >> > >> > >

Re: [GIT PULL] x86/mm changes for v4.14: PCID support, 5-level paging support, Secure Memory Encryption support

> On Sep 5, 2017, at 2:17 PM, Linus Torvalds > wrote: > >> On Mon, Sep 4, 2017 at 2:31 AM, Ingo Molnar wrote: >> >> Please pull the latest ... git tree from: >> >> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ... > > Hmm. My

Re: [PATCH v4 18/28] ARM: dts: s500-guitar-bb-rev-b: Add fake uart3 clock

Am 06.06.2017 um 02:54 schrieb Andreas Färber: > Add a fixed-clock for baudrate 115200. > > Signed-off-by: Andreas Färber > --- > v2 -> v3 -> v4: unchanged > > v2: new > > arch/arm/boot/dts/s500-guitar-bb-rev-b.dts | 7 +++ > 1 file changed, 7 insertions(+) Applied

Re: [PATCH net] rds: Fix non-atomic operation on shared flag variable

From: Håkon Bugge Date: Tue, 5 Sep 2017 17:42:01 +0200 > The bits in m_flags in struct rds_message are used for a plurality of > reasons, and from different contexts. To avoid any missing updates to > m_flags, use the atomic set_bit() instead of the non-atomic

[PATCH v2 34/40] tracing: Add 'last error' error facility for hist triggers

With the addition of variables and actions, it's become necessary to provide more detailed error information to users about syntax errors. Add a 'last error' facility accessible via the erroring event's 'hist' file. Reading the hist file after an error will display more detailed information

[PATCH v2 33/40] tracing: Add hist trigger support for variable reference aliases

Add support for alias=$somevar where alias can be used as onmatch($alias). Signed-off-by: Tom Zanussi --- kernel/trace/trace_events_hist.c | 61 ++-- 1 file changed, 58 insertions(+), 3 deletions(-) diff --git

[PATCH v2 32/40] tracing: Add cpu field for hist triggers

A common key to use in a histogram is the cpuid - add a new cpu 'synthetic' field for that purpose. This field is named cpu rather than $cpu or $common_cpu because 'cpu' already exists as a special filter field and it makes more sense to match that rather than add another name for the same thing.

[PATCH v2 03/40] tracing: Remove code which merges duplicates

From: Vedang Patel We now have the logic to detect and remove duplicates in the tracing_map hash table. The code which merges duplicates in the histogram is redundant now. So, modify this code just to detect duplicates. The duplication detection code is still kept to

[PATCH v2 05/40] tracing: Reimplement log2

log2 as currently implemented applies only to u64 trace_event_field derived fields, and assumes that anything it's applied to is a u64 field. To prepare for synthetic fields like latencies, log2 should be applicable to those as well, so take the opportunity now to fix the current problems as well

[PATCH v2 04/40] tracing: Add hist_field_name() accessor

In preparation for hist_fields that won't be strictly based on trace_event_fields, add a new hist_field_name() accessor to allow that flexibility and update associated users. Signed-off-by: Tom Zanussi --- kernel/trace/trace_events_hist.c | 67

[PATCH v2 10/40] tracing: Add ring buffer event param to hist field functions

Some events such as timestamps require access to a ring_buffer_event struct; add a param so that hist field functions can access that. Signed-off-by: Tom Zanussi --- kernel/trace/trace_events_hist.c | 39 --- 1 file changed, 24

[PATCH v2 06/40] ring-buffer: Add interface for setting absolute time stamps

Define a new function, tracing_set_time_stamp_abs(), which can be used to enable or disable the use of absolute timestamps rather than time deltas for a trace array. This resets the buffer to prevent a mix of time deltas and absolute timestamps. Only the interface is added here; a subsequent

[PATCH 0/2] ALSA: rme9652: Adjustments for two function implementations

From: Markus Elfring Date: Tue, 5 Sep 2017 22:30:22 +0200 Two update suggestions were taken into account from static source code analysis. Markus Elfring (2): Use common code in hdsp_get_iobox_version() Use common error handling code in snd_hdspm_probe()

[PATCH] f2fs: fix wrong bfree and bavail

This patch fixes bavail and bfree finally. longf_bfree;/* free blocks in fs */ longf_bavail; /* free blocks avail to non-superuser */ So, bfree represents all the reserved blocks, while bavail does the space only visible to normal user. Fix: 3e6d0b4d9c1c ("f2fs: fix incorrect

[PATCH v2 24/40] tracing: Add variable reference handling to hist triggers

Add the necessary infrastructure to allow the variables defined on one event to be referenced in another. This allows variables set by a previous event to be referenced and used in expressions combining the variable values saved by that previous event and the event fields of the current event.

[PATCH v2 22/40] tracing: Pass tracing_map_elt to hist_field accessor functions

Some accessor functions, such as for variable references, require access to a corrsponding tracing_map_elt. Add a tracing_map_elt param to the function signature and update the accessor functions accordingly. Signed-off-by: Tom Zanussi ---

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