Re: [PATCH 3/6] ARM: PSCI: Register with kernel restart handler

On 04/14/2016 01:52 AM, Wolfram Sang wrote: That makes things quite tricky. Best I can think of is a series of boolean devicetree properties, such as broken-reset-handler last-resort-restart-handler secondary-restart-handler default-restart-handler prima

[PATCH v2 04/17] arm64: Introduce pmd_thp_or_huge

Add a helper to determine if a given pmd represents a huge page either by hugetlb or thp, as we have for arm. This will be used by KVM MMU code. Suggested-by: Mark Rutland Cc: Catalin Marinas Cc: Steve Capper Cc: Will Deacon Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arc

[PATCH v2 00/17] kvm-arm: Add stage2 page table walker

This series adds support for stage2 page table helpers and makes the core kvm-arm MMU code make use of it. At the moment we assume that the host/hyp and the stage2 page tables have same number of levels and hence use the host level accessors (except for some hooks, e.g kvm_p.d_addr_end) and shares

[PATCH v2 14/17] kvm-arm: Cleanup kvm_* wrappers

Now that we have switched to explicit page table routines, get rid of the obsolete kvm_* wrappers. Also, kvm_tlb_flush_vmid_by_ipa is now called only on stage2 page tables, hence get rid of the redundant check. Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- ar

[PATCH v2 16/17] kvm-arm: Cleanup stage2 pgd handling

Now that we don't have any fake page table levels for arm64, cleanup the common code to get rid of the dead code. Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V1: - Un-inline kvm_alloc_hwpgd(), kvm_get_hwpgd_size() --- arch/arm/include/asm/kvm

[PATCH v2 13/17] kvm-arm: Add stage2 page table modifiers

Now that the hyp page table is handled by different set of routines, rename the original shared routines to stage2 handlers. Also make explicit use of the stage2 page table helpers. unmap_range has been merged to existing unmap_stage2_range. Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-of

Re: [RFC PATCH v1.9 14/14] livepatch: update task universe when exiting kernel

On Thu, Apr 14, 2016 at 10:47:04AM +0200, Miroslav Benes wrote: > On Fri, 25 Mar 2016, Josh Poimboeuf wrote: > > > Update a tasks's universe when returning from a system call or user > > space interrupt, or after handling a signal. > > > > This greatly increases the chances of a patch operation s

[PATCH v2 15/17] kvm: arm64: Get rid of fake page table levels

On arm64, the hardware supports concatenation of upto 16 tables, at entry level for stage2 translations and we make use that whenever possible. This could lead to reduced number of translation levels than the normal (stage1 table) table. Also, since the IPA(40bit) is smaller than the some of the su

[PATCH v2 12/17] kvm-arm: Add explicit hyp page table modifiers

We have common routines to modify hyp and stage2 page tables based on the 'kvm' parameter. For a smoother transition to using separate routines for each, duplicate the routines and modify the copy to work on hyp. Marks the forked routines with _hyp_ and gets rid of the kvm parameter which is no lo

[PATCH v2 10/17] kvm-arm: arm64: Introduce hyp page table empty checks

Introduce hyp_pxx_table_empty helpers for checking whether a given table entry is empty. This will be used explicitly once we switch to explicit routines for hyp page table walk. Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm64/include/asm/kvm_mmu.h |

[PATCH v2 11/17] kvm-arm: Use explicit stage2 helper routines

We have stage2 page table helpers for both arm and arm64. Switch to the stage2 helpers for routines that only deal with stage2 page table. Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm/kvm/mmu.c | 48

[PATCH v2 17/17] arm64: kvm: Add support for 16K pages

Now that we can handle stage-2 page tables independent of the host page table levels, wire up the 16K page support. Cc: Marc Zyngier Reviewed-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm64/include/asm/kvm_arm.h | 13 +++-- arch/arm64/kvm/Kconfig |1

[PATCH v2 06/17] kvm-arm: Remove kvm_pud_huge()

Get rid of kvm_pud_huge() which falls back to pud_huge. Use pud_huge instead. Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm/kvm/mmu.c |4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c ind

[PATCH v2 07/17] kvm-arm: arm32: Introduce stage2 page table helpers

Define the page table helpers for walking the stage2 pagetable for arm. Since both hyp and stage2 have the same number of levels, as that of the host we reuse the host helpers. The exceptions are the p.d_addr_end routines which have to deal with IPA > 32bit, hence we use the open coded version of

[PATCH v2 01/17] arm64: Reuse TCR field definitions for EL1 and EL2

TCR_EL1, TCR_EL2 and VTCR_EL2, all share some field positions (TG0, ORGN0, IRGN0 and SH0) and their corresponding value definitions. This patch makes the TCR_EL1 definitions reusable and uses them for TCR_EL2 and VTCR_EL2 fields. This also fixes a bug where we assume TG0 in {V}TCR_EL2 is 1bit fie

[PATCH v2 08/17] kvm-arm: arm: Introduce hyp page table empty checks

Introduce hyp_pxx_table_empty helpers for checking whether a given table entry is empty. This will be used explicitly once we switch to explicit routines for hyp page table walk. Cc: Marc Zyngier Reviewed-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm/include/asm/kvm_mmu.h |

Re: [PATCH v2 1/2] efi: Iterate over efi.memmap in for_each_efi_memory_desc

On 14 April 2016 at 14:13, Matt Fleming wrote: > Most of the users of for_each_efi_memory_desc() are equally happy > iterating over the EFI memory map in efi.memmap instead of 'memmap', > since the former is usually a pointer to the later. > s/later/latter/ > For those users that want to specify

[PATCH v2 02/17] arm64: Cleanup VTCR_EL2 and VTTBR field values

We share most of the bits for VTCR_EL2 for different page sizes, except for the TG0 value and the entry level value. This patch makes the definitions a bit more cleaner to reflect this fact. Also cleans up the VTTBR_X calculation. No functional changes. Cc: Marc Zyngier Reviewed-by: Christoffer

[PATCH v2 05/17] kvm-arm: Replace kvm_pmd_huge with pmd_thp_or_huge

Both arm and arm64 now provides a helper, pmd_thp_or_huge() to check if the given pmd represents a huge page. Use that instead of our own custom check. Suggested-by: Mark Rutland Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm/kvm/mmu.c | 17

[PATCH v2 09/17] kvm-arm: arm64: Introduce stage2 page table helpers

Introduce stage2 page table helpers for arm64. With the fake page table level still in place, the stage2 table has the same number of levels as that of the host (and hyp), so they all fallback to the host version. Cc: Marc Zyngier Reviewed-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --

[PATCH v2 03/17] kvm arm: Move fake PGD handling to arch specific files

Rearrange the code for fake pgd handling, which is applicable only for arm64. This will later be removed once we introduce the stage2 page table walker macros. Reviewed-by: Marc Zyngier Reviewed-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm/include/asm/kvm_mmu.h | 11 ++

Re: Live patching for powerpc

On Wed, 13 Apr 2016, Jessica Yu wrote: > +++ Miroslav Benes [13/04/16 15:01 +0200]: > > On Wed, 13 Apr 2016, Michael Ellerman wrote: > > > > > This series adds live patching support for powerpc (ppc64le only ATM). > > > > > > It's unchanged since the version I posted on March 24, with the except

Re: [PATCH v2 00/17] kvm-arm: Add stage2 page table walker

On 14/04/16 14:20, Suzuki K Poulose wrote: This series adds support for stage2 page table helpers and makes the core kvm-arm MMU code make use of it. At the moment we assume that the host/hyp and the stage2 page tables have same number of levels and hence use the host level accessors (except for

Re: [GIT PULL 00/11] perf/core improvements and fixes

160413' of > git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core > (2016-04-13 20:27:58 +0200) > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git > tags/

[tip:perf/core] perf trace: Add seccomp beautifier related defines for older systems

Commit-ID: 6fb35b9515c6300cb25022ac74f5f5617a349e18 Gitweb: http://git.kernel.org/tip/6fb35b9515c6300cb25022ac74f5f5617a349e18 Author: Arnaldo Carvalho de Melo AuthorDate: Wed, 13 Apr 2016 11:50:23 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:57:53 -0300 pe

[tip:perf/core] perf trace: Add getrandom beautifier related defines for older systems

Commit-ID: a355a61e43484ac02553b34b5f84ee84ca765fd6 Gitweb: http://git.kernel.org/tip/a355a61e43484ac02553b34b5f84ee84ca765fd6 Author: Arnaldo Carvalho de Melo AuthorDate: Wed, 13 Apr 2016 11:55:18 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:57:53 -0300 pe

[tip:perf/core] perf trace: Move mmap beautifiers to trace/beauty/ directory

Commit-ID: df4cb1678e2ea91eb5f00c4a43d898a12697 Gitweb: http://git.kernel.org/tip/df4cb1678e2ea91eb5f00c4a43d898a12697 Author: Arnaldo Carvalho de Melo AuthorDate: Wed, 13 Apr 2016 12:05:44 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:57:53 -0300 pe

[tip:perf/core] perf ordered_events: Introduce reinit()

Commit-ID: 4532f642974d871f9a50e9a09bc482eaed5394f6 Gitweb: http://git.kernel.org/tip/4532f642974d871f9a50e9a09bc482eaed5394f6 Author: Wang Nan AuthorDate: Wed, 13 Apr 2016 08:21:04 + Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:57:54 -0300 perf ordered_event

[tip:perf/core] perf trace: Move eventfd beautifiers to trace/beauty/ directory

Commit-ID: ea8dc3cefba0a0decaedc710b218a6ceffe0194a Gitweb: http://git.kernel.org/tip/ea8dc3cefba0a0decaedc710b218a6ceffe0194a Author: Arnaldo Carvalho de Melo AuthorDate: Wed, 13 Apr 2016 12:10:19 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:57:53 -0300 pe

[tip:perf/core] perf record: Turns auxtrace_snapshot_enable into 3 states

Commit-ID: c0bdc1c461dd5b2e492c0746708a3e0da6b13515 Gitweb: http://git.kernel.org/tip/c0bdc1c461dd5b2e492c0746708a3e0da6b13515 Author: Wang Nan AuthorDate: Wed, 13 Apr 2016 08:21:06 + Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:58:19 -0300 perf record: Turns

[tip:perf/core] perf session: Make ordered_events reusable

Commit-ID: b26dc73018d2e3a68cad0cf0bad902a8637f9bdf Gitweb: http://git.kernel.org/tip/b26dc73018d2e3a68cad0cf0bad902a8637f9bdf Author: Wang Nan AuthorDate: Wed, 13 Apr 2016 08:21:04 + Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:57:54 -0300 perf session: Make

[tip:perf/core] perf data: Add perf_data_file__switch() helper

Commit-ID: 040f9915e99e604688c2880e0b1e5b59dbfefa54 Gitweb: http://git.kernel.org/tip/040f9915e99e604688c2880e0b1e5b59dbfefa54 Author: Wang Nan AuthorDate: Wed, 13 Apr 2016 08:21:05 + Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 08:57:54 -0300 perf data: Add per

[tip:perf/core] perf record: Add '--timestamp-filename' option to append timestamp to output file name

Commit-ID: ecfd7a9c044e98fc3da8937e652080bc5abe7918 Gitweb: http://git.kernel.org/tip/ecfd7a9c044e98fc3da8937e652080bc5abe7918 Author: Wang Nan AuthorDate: Wed, 13 Apr 2016 08:21:07 + Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 09:00:39 -0300 perf record: Add '

[tip:perf/core] perf config: Make show_config() use perf_config_set

Commit-ID: 860b8d4b3f893c97f905b978ecf62f48816dc5de Gitweb: http://git.kernel.org/tip/860b8d4b3f893c97f905b978ecf62f48816dc5de Author: Taeung Song AuthorDate: Thu, 14 Apr 2016 16:53:19 +0900 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 09:15:47 -0300 perf config: Ma

Re: [RFC PATCH v1.9 14/14] livepatch: update task universe when exiting kernel

On Thu, Apr 14, 2016 at 10:50:28AM +0200, Miroslav Benes wrote: > On Thu, 14 Apr 2016, Miroslav Benes wrote: > > > On Fri, 25 Mar 2016, Josh Poimboeuf wrote: > > > > > Update a tasks's universe when returning from a system call or user > > > space interrupt, or after handling a signal. > > > > >

Re: [RFC PATCH] sched/cputime: drop local_irq_safe() in vtime_init_idle()

On 04/14/2016 03:18 PM, Frederic Weisbecker wrote: > I think I tried this but I got lockdep warnings because the other updaters > happen on IRQ. I booted and played a little but lockdep didn't scream here so far. > In practive we can't be interrupted since the idle task hasn't even started. > >

[PATCH] asm-generic/futex: Properly re-enable preemption in futex_atomic_cmpxchg_inatomic()

The futex subsystem relies on futex_atomic_cmpxchg_inatomic() to perform an atomic cmpxchg. Most architectures provide their own implementation. For those who do not, provides a generic software implementations that works on !SMP platforms. To provide an atomicity guarantee on !SMP plaforms, the

Re: [PATCH v3 3/3] drm: bridge: anx78xx: Add anx78xx driver support.

Hi Thierry, Many thanks for answering and do this accurate report. I'd add a comment on something you (see below). Apart from this I'll add your changes and send a new version. On 14/04/16 15:10, Thierry Reding wrote: On Fri, Apr 08, 2016 at 02:52:52PM +0200, Enric Balletbo i Serra wrote: A

[tip:perf/core] perf config: Introduce perf_config_set class

Commit-ID: 20105ca1240c3d3ac8cc79bf195022e5e5c1c3fb Gitweb: http://git.kernel.org/tip/20105ca1240c3d3ac8cc79bf195022e5e5c1c3fb Author: Taeung Song AuthorDate: Thu, 14 Apr 2016 16:53:18 +0900 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 14 Apr 2016 09:00:42 -0300 perf config: In

Re: Xen regression, Was: [PATCH] x86/irq: Probe for PIC presence before allocating descs for legacy IRQs

On 12/04/16 19:06, Stefano Stabellini wrote: > On Tue, 12 Apr 2016, Boris Ostrovsky wrote: >> On 04/11/2016 10:08 PM, Stefano Stabellini wrote: >>> Hi all, >>> >>> Unfortunately this patch (now commit >>> 8c058b0b9c34d8c8d7912880956543769323e2d8) causes a regression on Xen >>> when running on top o

4.6.0-rc3 UBSAN: atomic.h:156:2,Apr 14 15:40:24 n22kvm-clone kernel: signed integer overflow:

Got this at a 32 bit KVM during boot : Apr 14 15:40:24 n22kvm-clone kernel: Apr 14 15:40:24 n22kvm-clone kernel: UBSAN: Undefined behaviour in ./arch/x86/include/asm/atomic.h:156:2 Apr 14 15:40:24 n22kvm-clone kerne

Re: [PATCH] mm/vmalloc: Keep a separate lazy-free list

On Thu, Apr 14, 2016 at 03:13:26PM +0200, Roman Peniaev wrote: > Hi, Chris. > > Is it made on purpose not to drop VM_LAZY_FREE flag in > __purge_vmap_area_lazy()? With your patch va->flags > will have two bits set: VM_LAZY_FREE | VM_LAZY_FREEING. > Seems it is not that bad, because all other code

Re: 4.6.0-rc3 UBSAN: atomic.h:156:2,Apr 14 15:40:24 n22kvm-clone kernel: signed integer overflow:

Toralf Förster: > Got this at a 32 bit KVM during boot : and later while fuzzying with trinity : Apr 14 15:44:56 n22kvm-clone kernel: Apr 14 15:44:56 n22kvm-clone kernel: UBSAN: Undefined behaviour in ./arch/x86/in

Re: [PATCH v2 2/2] efi: Remove global 'memmap'

On 14 April 2016 at 14:13, Matt Fleming wrote: > Abolish the poorly named EFI memory map, 'memmap'. It is shadowed by a > bunch of local definitions in various files and having two ways to > access the EFI memory map ('efi.memmap' vs 'memmap') is rather > confusing. > > Furthermore, ia64 doesn't e

Re: [Patch V2 1/2] iommu: remove the iommu_callback_data

Hi, Alex I think this one is correct. It applies on v4.5 and works fine. Or I missed something else? On Wed, Mar 23, 2016 at 10:25:10PM +, Wei Yang wrote: >According to the code path, iommu_callback_data is passed in >iommu_bus_init() and just used in {add/remove}_iommu_group, by when the >b

INFO: inconsistent lock state in ecryptfs_calculate_md5

Hi, We've run into the following lockdep warning while using a system with ecryptfs, under heavy memory pressure. If I understand the issue correctly, fs/ecryptfs/crypto.c:ecryptfs_calculate_md5: - Locks &crypt_stat->cs_hash_tfm_mutex -> Calls crypto_alloc_hash -> Calls crypto_alloc_base

Re: [PATCH v3 3/3] drm: bridge: anx78xx: Add anx78xx driver support.

Hi Enric, On 14 April 2016 at 14:42, Enric Balletbo i Serra wrote: > The patch was implemented first without OR'ing error codes. The reason why I > changed this is because I received the comments that checking the error on > every regmap_* didn't help the readability of the driver and is likely t

Re: [PATCH v3 3/3] drm: bridge: anx78xx: Add anx78xx driver support.

Hi Emil, On 14/04/16 16:06, Emil Velikov wrote: Hi Enric, On 14 April 2016 at 14:42, Enric Balletbo i Serra wrote: The patch was implemented first without OR'ing error codes. The reason why I changed this is because I received the comments that checking the error on every regmap_* didn't help

[PATCH] i2c: designware-platdrv: implement bus recovery

Implement bus recovery methods for i2c designware so we can recover from situations where SCL/SDA are stuck low. The recovery method is similar as i2c-imx: "config the i2c pinctrl to gpio mode by calling pinctrl sleep set function, and then use GPIO to emulate the i2c protocol to send nine dummy c

Re: [PATCH 2/5] livepatch: Allow architectures to specify an alternate ftrace location

On Thu, 14 Apr 2016, Michael Ellerman wrote: > On Thu, 2016-04-14 at 14:01 +0200, Miroslav Benes wrote: > > On Wed, 13 Apr 2016, Michael Ellerman wrote: > > > > static void klp_disable_func(struct klp_func *func) > > > { > > > struct klp_ops *ops; > > > @@ -312,8 +325,14 @@ static void kl

Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated per-cpu locks

On Tue 12-04-16 18:54:43, Waiman Long wrote: > Linked list is used everywhere in the Linux kernel. However, if many > threads are trying to add or delete entries into the same linked list, > it can create a performance bottleneck. > > This patch introduces a new per-cpu list subystem with associat

Re: [PATCH v4 0/8] block: prepare for multipage bvecs

On 04/14/2016 05:46 AM, Ming Lei wrote: Hi, Interests[1] have been shown in multipage bvecs, so this patchset try to prepare for the support and do two things: 1) the 1st 4 patches use bvec iterator to implement iterate_bvec(), then we can drop the non-standard way for iterating bvec, which can

Re: [PATCH v2 01/17] arm64: Reuse TCR field definitions for EL1 and EL2

On 14/04/16 14:20, Suzuki K Poulose wrote: > TCR_EL1, TCR_EL2 and VTCR_EL2, all share some field positions > (TG0, ORGN0, IRGN0 and SH0) and their corresponding value definitions. > > This patch makes the TCR_EL1 definitions reusable and uses them for TCR_EL2 > and VTCR_EL2 fields. > > This also

[GIT PULL] mm/pkeys update

Linus, Please pull the latest mm-urgent-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git mm-urgent-for-linus # HEAD: c12d2da56d0e07d230968ee2305aaa86b93a6832 mm/gup: Remove the macro overload API migration helpers from the get_user*() APIs This removes t

Re: [PATCH v2 02/17] arm64: Cleanup VTCR_EL2 and VTTBR field values

On 14/04/16 14:20, Suzuki K Poulose wrote: > We share most of the bits for VTCR_EL2 for different page sizes, > except for the TG0 value and the entry level value. This patch > makes the definitions a bit more cleaner to reflect this fact. > > Also cleans up the VTTBR_X calculation. No functional

Re: [PATCH v2 04/17] arm64: Introduce pmd_thp_or_huge

On 14/04/16 14:20, Suzuki K Poulose wrote: > Add a helper to determine if a given pmd represents a huge page > either by hugetlb or thp, as we have for arm. This will be used > by KVM MMU code. > > Suggested-by: Mark Rutland > Cc: Catalin Marinas > Cc: Steve Capper > Cc: Will Deacon > Acked-by

[GIT PULL] x86 fixes

Linus, Please pull the latest x86-urgent-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus # HEAD: a3125494cff084b098c80bb36fbe2061ffed9d52 x86/mce: Avoid using object after free in genpool Misc fixes: a binutils fix, an lguest fix,

Re: [PATCH v2 05/17] kvm-arm: Replace kvm_pmd_huge with pmd_thp_or_huge

On 14/04/16 14:20, Suzuki K Poulose wrote: > Both arm and arm64 now provides a helper, pmd_thp_or_huge() > to check if the given pmd represents a huge page. Use that > instead of our own custom check. > > Suggested-by: Mark Rutland > Cc: Marc Zyngier > Acked-by: Christoffer Dall > Signed-off-by

Re: [PATCH 1/2] [media] atmel-isc: add the Image Sensor Controller code

Hello Songjun, On Thursday 14 Apr 2016 13:44:27 Wu, Songjun wrote: > The option 'CONFIG_COMMON_CLK=y' is needed to add to '.config'. > But I do not validate, '.config' will be generated automatically and > overwritten when it is changed. Your driver's Kconfig entry should then contain "depends on

Re: [PATCH v2 06/17] kvm-arm: Remove kvm_pud_huge()

On 14/04/16 14:20, Suzuki K Poulose wrote: > Get rid of kvm_pud_huge() which falls back to pud_huge. Use > pud_huge instead. > > Cc: Marc Zyngier > Acked-by: Christoffer Dall > Signed-off-by: Suzuki K Poulose Acked-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny...

Re: [PATCH 2/5] regulator: st-flashss: Add a regulator driver for flashss vsense.

Hello Mark On 4/13/2016 7:23 PM, Mark Brown wrote: On Wed, Apr 13, 2016 at 09:59:00AM +0200, Giuseppe CAVALLARO wrote: On 4/13/2016 8:15 AM, Mark Brown wrote: +static void st_get_satinize_powerup_voltage(struct st_vsense *vsense) +{ or am I missing something? Why do we need to do this anyw

Re: [PATCH v2 3/4] PCI: generic, thunder: update to use generic ECAM API

Hi David, On Tue, Apr 12, 2016 at 6:04 AM, David Daney wrote: > On 04/11/2016 03:45 PM, Jayachandran C wrote: >> >> Use functions provided by drivers/pci/ecam.h for mapping the config >> space in drivers/pci/host/pci-host-common.c, and update its users to >> use 'struct pci_config_window' and 'st

[PATCH v2 22/29] radix-tree: Rewrite radix_tree_tag_clear

From: Ross Zwisler Use the new multi-order support functions to rewrite radix_tree_tag_clear() Signed-off-by: Ross Zwisler Signed-off-by: Matthew Wilcox --- lib/radix-tree.c | 44 1 file changed, 20 insertions(+), 24 deletions(-) diff --git a/lib/

[PATCH v2 23/29] radix-tree: Rewrite radix_tree_tag_get

From: Ross Zwisler Use the new multi-order support functions to rewrite radix_tree_tag_get() Signed-off-by: Ross Zwisler Signed-off-by: Matthew Wilcox --- lib/radix-tree.c | 44 ++-- 1 file changed, 18 insertions(+), 26 deletions(-) diff --git a/lib/ra

[PATCH v2 29/29] radix-tree: Add copyright statements

The multiorder support is a sufficiently large feature to be worth adding copyrigt lines for. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- lib/radix-tree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 9fe5b83..cd7dc59 100644 ---

[PATCH v2 24/29] radix-tree test suite: add multi-order tag test

From: Ross Zwisler Add a generic test for multi-order tag verification, and call it using several different configurations. This test creates a multi-order radix tree using the given index and order, and then sets, checks and clears tags using the indices covered by the single multi-order radix

[PATCH v2 28/29] radix-tree: Fix radix_tree_dump() for multi-order entries

From: Ross Zwisler - Print which indices are covered by every leaf entry - Print sibling entries - Print the node pointer instead of the slot entry - Build by default in userspace, and make it accessible to the test-suite Signed-off-by: Ross Zwisler Signed-off-by: Matthew Wilcox --- lib/r

[PATCH v2 13/29] radix-tree: Introduce radix_tree_load_root()

All the tree walking functions start with some variant of this code; centralise it in one place so we're not chasing subtly different bugs everywhere. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- lib/radix-tree.c | 23 +++ 1 file changed, 23 insertions(+) dif

[PATCH v2 01/29] radix-tree: Introduce radix_tree_empty

The irqdomain code was checking for 0 or 1 entries, not 0 entries like the comment said they were. Introduce a new helper that will actually check for an empty tree. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- include/linux/radix-tree.h | 5 + kernel/irq/irqdomain.c | 7

[PATCH v2 25/29] radix-tree: Fix radix_tree_create for sibling entries

If the radix tree user attempted to insert a colliding entry with an existing multiorder entry, then radix_tree_create() could encounter a sibling entry when walking down the tree to look for a slot. Use radix_tree_descend() to fix the problem, and add a test-case to make sure the problem doesn't c

Re: [PATCH 0/2] [media] atmel-isc: add driver for Atmel ISC

Hello Songjun, On Wednesday 13 Apr 2016 15:44:18 Songjun Wu wrote: > The Image Sensor Controller driver includes two parts. > 1) Driver code to implement the ISC function. > 2) Device tree binding documentation, it describes how >to add the ISC in device tree. > > > Songjun Wu (2): > [medi

[PATCH v2 09/29] radix-tree: Add missing sibling entry functionality

The code I previously added to enable multiorder radix tree entries was untested and therefore buggy. This commit adds the support functions that Ross and I decided were necessary over a four-week period of iterating various designs. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler ---

[PATCH v2 08/29] Introduce CONFIG_RADIX_TREE_MULTIORDER

I've been receiving increasingly concerned notes from 0day about how much my recent changes have been bloating the radix tree. Make it happier by only including multiorder support if CONFIG_TRANSPARENT_HUGEPAGES is set. This is an independent Kconfig option, so other radix tree users can also set

Re: [PATCH v7 4/4] vfs: Use per-cpu list for superblock's inode list

On Tue 12-04-16 18:54:46, Waiman Long wrote: > When many threads are trying to add or delete inode to or from > a superblock's s_inodes list, spinlock contention on the list can > become a performance bottleneck. > > This patch changes the s_inodes field to become a per-cpu list with > per-cpu spi

[PATCH v2 03/29] radix tree test suite: Add tests for radix_tree_locate_item()

Fairly simple tests; add various items to the tree, then make sure we can find them again. Also check that a pointer that we know isn't in the tree is not found. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- tools/testing/radix-tree/linux/kernel.h | 3 +++ tools/testing/radix-tr

[PATCH v2 18/29] radix-tree: Fix multiorder BUG_ON in radix_tree_insert

These BUG_ON tests are to ensure that all the tags are clear when inserting a new entry. If we insert a multiorder entry, we'll end up looking at the tags for a different node, and so the BUG_ON can end up triggering spuriously. Also, we now have three tags, not two, so check all three are clear,

[PATCH v2 12/29] radix-tree: Remove restriction on multi-order entries

Now that sibling pointers are handled explicitly, there is no purpose served by restricting the order to be >= RADIX_TREE_MAP_SHIFT. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- lib/radix-tree.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/lib/radix-tree.c b/lib/radix-tre

[PATCH v2 17/29] radix-tree: Rewrite __radix_tree_lookup

Use the new multi-order support functions to rewrite __radix_tree_lookup() Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- lib/radix-tree.c | 48 1 file changed, 16 insertions(+), 32 deletions(-) diff --git a/lib/radix-tree.c b/lib/r

[PATCH v2 27/29] radix-tree: Fix radix_tree_range_tag_if_tagged() for multiorder entries

I had previously decided that tagging a single multiorder entry would count as tagging 2^order entries for the purposes of 'nr_to_tag'. I now believe that decision to be a mistake, and it should count as a single entry. That's more likely to be what callers expect. When walking back up the tree f

Re: [PATCH 4.4 159/210] drm/radeon: disable runtime pm on PX laptops without dGPU power control

On Thu, Apr 14, 2016 at 11:44:09AM +0900, Michel Dänzer wrote: > On 12.04.2016 23:16, Greg Kroah-Hartman wrote: > > On Mon, Apr 11, 2016 at 11:26:00AM +0900, Michel Dänzer wrote: > >> On 11.04.2016 03:36, Greg Kroah-Hartman wrote: > >>> 4.4-stable review patch. If anyone has any objections, please

[PATCH v2 05/29] radix tree test suite: keep regression test runs short

From: Ross Zwisler Currently the full suite of regression tests take upwards of 30 minutes to run on my development machine. The vast majority of this time is taken by the big_gang_check() and copy_tag_check() tests, which each run their tests through thousands of iterations...does this have val

[PATCH v2 3/6] perf record: Force enable --timestamp-filename when --switch-output is provided

Without this patch, the last output doesn't have timestamp appended if --timestamp-filename is not explicitly provided. For example: # perf record -a --switch-output & [1] 11224 # kill -s SIGUSR2 11224 [ perf record: dump data: Woken up 1 times ] # [ perf record: Dump perf.data.20151226223728

Re: [PATCH v2 08/17] kvm-arm: arm: Introduce hyp page table empty checks

On 14/04/16 14:20, Suzuki K Poulose wrote: > Introduce hyp_pxx_table_empty helpers for checking whether > a given table entry is empty. This will be used explicitly > once we switch to explicit routines for hyp page table walk. > > Cc: Marc Zyngier > Reviewed-by: Christoffer Dall > Signed-off-by

[PATCH v2 5/6] perf record: Re-synthesize tracking events after output switching

Tracking events describe kernel and threads. They are generated by reading /proc/kallsyms, /proc/*/maps and /proc/*/task/* during initialization of 'perf record', serialized into event sequences and put at the head of 'perf.data'. In case of output switching, each output file should contain those e

[PATCH v2 20/29] radix tree test suite: multi-order iteration test

From: Ross Zwisler Add a unit test to verify that we can iterate over multi-order entries properly via a radix_tree_for_each_slot() loop. This was done with a single, somewhat complicated configuration that was meant to test many of the various corner cases having to do with multi-order entries:

[PATCH v2 2/6] perf record: Split output into multiple files via '--switch-output'

Allow 'perf record' splits its output into multiple files. For example: # ~/perf record -a --timestamp-filename --switch-output & [1] 10763 # kill -s SIGUSR2 10763 [ perf record: dump data: Woken up 1 times ] # [ perf record: Dump perf.data.2015122622314468 ] # kill -s SIGUSR2 10763 [ per

[PATCH v2 1/6] perf tools: Extrace trigger class from auxtrace_snapshot

Create a new 'class' named 'trigger' to model state of a trigger and implement auxtrace_snapshot with it. 'trigger' defines 3 state transfering functions ('on', 'enable', 'disable') and 1 state query function ('is_enabled'). The state 'ON' and 'OFF' take higher priority than 'ENABLED' and 'DISABLE

[PATCH v2 04/29] radix tree test suite: Allow testing other fan-out values

From: Ross Zwisler The defines in regression2.c are already in radix-tree.h and duplicating them in the test case makes experimenting with other values for the fan-out harder than necessary. Allow the user of the radix tree to decide what the fan-out should be rather than fixing it to 8 for non-

[PATCH v2 02/29] radix tree test suite: Fix build

Add an empty linux/init.h, and definitions for a few parts of the kernel API either in use now, or to be used in the near future. Start using the common definitions in tools/include/linux, although more work needs to be done here. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- too

[PATCH v2 4/6] perf record: Disable buildid cache options by default in switch output mode

Cost of buildid cache processing is high: reading all events in output perf.data, opening each elf file to read buildids then copying them into ~/.debug directory. In switch output mode, these heavy works block perf from receiving perf events for too long. Enable no-buildid and no-buildid-cache by

[PATCH v2 0/6] perf tools: Use SIGUSR2 control data dumpping

This patch set is based on perf/core. v1 -> v2: Fix a bug which triggers output switching without '--switch-output' provided. Patch 5/10 in v1 has a bug: with following cmdline: # perf record -e intel_bts// --per-thread --snapshot -p 13588 Sending 'SIGUSR2' to perf triggers output swi

Re: [RFC PATCH] sched/cputime: drop local_irq_safe() in vtime_init_idle()

On Thu, Apr 14, 2016 at 03:41:17PM +0200, Sebastian Andrzej Siewior wrote: > On 04/14/2016 03:18 PM, Frederic Weisbecker wrote: > > I think I tried this but I got lockdep warnings because the other updaters > > happen on IRQ. > > I booted and played a little but lockdep didn't scream here so far.

[PATCH v2 6/6] perf record: Generate tracking events for process forked by perf

With 'perf record --switch-output' without -a, record__synthesize() in record__switch_output() won't generate tracking events because there's no thread_map in evlist. Which causes newly created perf.data doesn't contain map and comm information. This patch creates a fake thread_map and directly ca

Re: [PATCH v2 07/17] kvm-arm: arm32: Introduce stage2 page table helpers

On 14/04/16 14:20, Suzuki K Poulose wrote: > Define the page table helpers for walking the stage2 pagetable > for arm. Since both hyp and stage2 have the same number of levels, > as that of the host we reuse the host helpers. > > The exceptions are the p.d_addr_end routines which have to deal > wi

[PATCH v2 06/29] radix tree test suite: rebuild when headers change

From: Ross Zwisler When we make changes to radix-tree.h in the regular kernel source (include/linux/radix-tree.h), we really want our test code to be rebuilt. We also include a few other headers from tools/include and probably want to rebuild if these have been changed. Update the makefile so t

[PATCH v2 07/29] radix-tree: remove unused looping macros

From: Ross Zwisler radix_tree_for_each_chunk() and radix_tree_for_each_chunk_slot() have never been used in the kernel since their introduction in 2012, so remove them. Signed-off-by: Ross Zwisler Signed-off-by: Matthew Wilcox --- include/linux/radix-tree.h | 28

[PATCH v2 11/29] radix-tree: Fix deleting a multi-order entry through an alias

If we deleted an entry through an index which looked up a sibling pointer, we'd end up zeroing out the wrong slots in the node. Use get_slot_offset() to find the right slot. Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- lib/radix-tree.c | 2 +- 1 file changed, 1 insertion(+), 1 de

[PATCH v2 15/29] radix tree test suite: Start adding multiorder tests

Test suite infrastructure for working with multiorder entries. The test itself is pretty basic: Add an entry, check that all expected indices return that entry and that indices around that entry don't return an entry. Then delete the entry and check no index returns that entry. Tests a few edge co

[PATCH v2 10/29] radix-tree: Fix sibling entry insertion

The subtraction was the wrong way round, leading to undefined behaviour (shift by an amount larger than the size of the type). Signed-off-by: Matthew Wilcox Reviewed-by: Ross Zwisler --- lib/radix-tree.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/radix-tree.c b/

Re: [PATCH v14 2/2] drm/bridge: Add I2C based driver for ps8640 bridge

On Sun, Apr 03, 2016 at 12:20:45PM +0800, Jitao Shi wrote: [...] > diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c > b/drivers/gpu/drm/bridge/parade-ps8640.c > new file mode 100644 > index 000..87f8bc7 > --- /dev/null > +++ b/drivers/gpu/drm/bridge/parade-ps8640.c > @@ -0,0 +1,1066 @@ > +/

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