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2016-08-04Soft RoCE driverMoni Shoua2-0/+145
Soft RoCE (RXE) - The software RoCE driver ib_rxe implements the RDMA transport and registers to the RDMA core device as a kernel verbs provider. It also implements the packet IO layer. On the other hand ib_rxe registers to the Linux netdev stack as a udp encapsulating protocol, in that case RDMA, for sending and receiving packets over any Ethernet device. This yields a RDMA transport over the UDP/Ethernet network layer forming a RoCEv2 compatible device. The configuration procedure of the Soft RoCE drivers requires binding to any existing Ethernet network device. This is done with /sys interface. A userspace Soft RoCE library (librxe) provides user applications the ability to run with Soft RoCE devices. The use of rxe verbs ins user space requires the inclusion of librxe as a device specifics plug-in to libibverbs. librxe is packaged separately. Architecture: +-----------------------------------------------------------+ | Application | +-----------------------------------------------------------+ +-----------------------------------+ | libibverbs | User +-----------------------------------+ +----------------+ +----------------+ | librxe | | HW RoCE lib | +----------------+ +----------------+ +---------------------------------------------------------------+ +--------------+ +------------+ | Sockets | | RDMA ULP | +--------------+ +------------+ +--------------+ +---------------------+ | TCP/IP | | ib_core | +--------------+ +---------------------+ +------------+ +----------------+ Kernel | ib_rxe | | HW RoCE driver | +------------+ +----------------+ +------------------------------------+ | NIC driver | +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +-----------------------------------------------------------+ | Application | +-----------------------------------------------------------+ +-----------------------------------+ | libibverbs | User +-----------------------------------+ +----------------+ +----------------+ | librxe | | HW RoCE lib | +----------------+ +----------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +--------------+ +------------+ | Sockets | | RDMA ULP | +--------------+ +------------+ +--------------+ +---------------------+ | TCP/IP | | ib_core | +--------------+ +---------------------+ +------------+ +----------------+ Kernel | ib_rxe | | HW RoCE driver | +------------+ +----------------+ +------------------------------------+ | NIC driver | +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Soft RoCE resources: [1[ https://github.com/SoftRoCE/librxe-dev librxe - source code in Github [2] https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home - Soft RoCE Wiki page [3] https://github.com/SoftRoCE/librxe-dev - Soft RoCE userspace library Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-04Merge tag 'modules-next-for-linus' of ↵Linus Torvalds3-29/+41
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "The only interesting thing here is Jessica's patch to add ro_after_init support to modules. The rest are all trivia" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: extable.h: add stddef.h so "NULL" definition is not implicit modules: add ro_after_init support jump_label: disable preemption around __module_text_address(). exceptions: fork exception table content from module.h into extable.h modules: Add kernel parameter to blacklist modules module: Do a WARN_ON_ONCE() for assert module mutex not held Documentation/module-signing.txt: Note need for version info if reusing a key module: Invalidate signatures on force-loaded modules module: Issue warnings when tainting kernel module: fix redundant test. module: fix noreturn attribute for __module_put_and_exit()
2016-08-04dynamic_debug: add jump label supportJason Baron1-6/+54
Although dynamic debug is often only used for debug builds, sometimes its enabled for production builds as well. Minimize its impact by using jump labels. This reduces the text section by 7000+ bytes in the kernel image below. It does increase data, but this should only be referenced when changing the direction of the branches, and hence usually not in cache. text data bss dec hex filename 8194852 4879776 925696 14000324 d5a0c4 vmlinux.pre 8187337 4960224 925696 14073257 d6bda9 vmlinux.post Link: http://lkml.kernel.org/r/d165b465e8c89bc582d973758d40be44c33f018b.1467837322.git.jbaron@akamai.com Signed-off-by: Jason Baron <jbaron@akamai.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Joe Perches <joe@perches.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04jump_label: remove bug.h, atomic.h dependencies for HAVE_JUMP_LABELJason Baron1-23/+23
The current jump_label.h includes bug.h for things such as WARN_ON(). This makes the header problematic for inclusion by kernel.h or any headers that kernel.h includes, since bug.h includes kernel.h (circular dependency). The inclusion of atomic.h is similarly problematic. Thus, this should make jump_label.h 'includable' from most places. Link: http://lkml.kernel.org/r/7060ce35ddd0d20b33bf170685e6b0fab816bdf2.1467837322.git.jbaron@akamai.com Signed-off-by: Jason Baron <jbaron@akamai.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Joe Perches <joe@perches.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04dma-mapping: use unsigned long for dma_attrsKrzysztof Kozlowski8-142/+110
The dma-mapping core and the implementations do not change the DMA attributes passed by pointer. Thus the pointer can point to const data. However the attributes do not have to be a bitfield. Instead unsigned long will do fine: 1. This is just simpler. Both in terms of reading the code and setting attributes. Instead of initializing local attributes on the stack and passing pointer to it to dma_set_attr(), just set the bits. 2. It brings safeness and checking for const correctness because the attributes are passed by value. Semantic patches for this change (at least most of them): virtual patch virtual context @r@ identifier f, attrs; @@ f(..., - struct dma_attrs *attrs + unsigned long attrs , ...) { ... } @@ identifier r.f; @@ f(..., - NULL + 0 ) and // Options: --all-includes virtual patch virtual context @r@ identifier f, attrs; type t; @@ t f(..., struct dma_attrs *attrs); @@ identifier r.f; @@ f(..., - NULL + 0 ) Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Acked-by: Mark Salter <msalter@redhat.com> [c6x] Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris] Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm] Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Joerg Roedel <jroedel@suse.de> [iommu] Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp] Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core] Acked-by: David Vrabel <david.vrabel@citrix.com> [xen] Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb] Acked-by: Joerg Roedel <jroedel@suse.de> [iommu] Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon] Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390] Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32] Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc] Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04include/linux/bitmap.h: cleanupAndrew Morton1-4/+3
Remove two unneeded `else's. Cc: David Hildenbrand <dahi@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04tree-wide: replace config_enabled() with IS_ENABLED()Masahiro Yamada2-3/+3
The use of config_enabled() against config options is ambiguous. In practical terms, config_enabled() is equivalent to IS_BUILTIN(), but the author might have used it for the meaning of IS_ENABLED(). Using IS_ENABLED(), IS_BUILTIN(), IS_MODULE() etc. makes the intention clearer. This commit replaces config_enabled() with IS_ENABLED() where possible. This commit is only touching bool config options. I noticed two cases where config_enabled() is used against a tristate option: - config_enabled(CONFIG_HWMON) [ drivers/net/wireless/ath/ath10k/thermal.c ] - config_enabled(CONFIG_BACKLIGHT_CLASS_DEVICE) [ drivers/gpu/drm/gma500/opregion.c ] I did not touch them because they should be converted to IS_BUILTIN() in order to keep the logic, but I was not sure it was the authors' intention. Link: http://lkml.kernel.org/r/1465215656-20569-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Stas Sergeev <stsp@list.ru> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Joshua Kinard <kumba@gentoo.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@suse.de> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: "Dmitry V. Levin" <ldv@altlinux.org> Cc: yu-cheng yu <yu-cheng.yu@intel.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Brian Gerst <brgerst@gmail.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Will Drewry <wad@chromium.org> Cc: Nikolay Martynov <mar.kolya@gmail.com> Cc: Huacai Chen <chenhc@lemote.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: Rafal Milecki <zajec5@gmail.com> Cc: James Cowgill <James.Cowgill@imgtec.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Alex Smith <alex.smith@imgtec.com> Cc: Adam Buchbinder <adam.buchbinder@gmail.com> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Mikko Rapeli <mikko.rapeli@iki.fi> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: "Luis R. Rodriguez" <mcgrof@do-not-panic.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Roland McGrath <roland@hack.frob.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Kalle Valo <kvalo@qca.qualcomm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Tony Wu <tung7970@gmail.com> Cc: Huaitong Han <huaitong.han@intel.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Juergen Gross <jgross@suse.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrea Gelmini <andrea.gelmini@gelma.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rabin Vincent <rabin@rab.in> Cc: "Maciej W. Rozycki" <macro@imgtec.com> Cc: David Daney <david.daney@cavium.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04Merge tag 'kvm-arm-for-4.8-take2' of ↵Paolo Bonzini3-4/+20
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/ARM Changes for v4.8 - Take 2 Includes GSI routing support to go along with the new VGIC and a small fix that has been cooking in -next for a while.
2016-08-03Merge branches 'hfi1' and 'sge-limit' into k.o/for-4.8-2Doug Ledford1-0/+6
2016-08-03IB/core: Support for CMA multicast join flagsAlex Vesker3-2/+24
Added UCMA and CMA support for multicast join flags. Flags are passed using UCMA CM join command previously reserved fields. Currently supporting two join flags indicating two different multicast JoinStates: 1. Full Member: The initiator creates the Multicast group(MCG) if it wasn't previously created, can send Multicast messages to the group and receive messages from the MCG. 2. Send Only Full Member: The initiator creates the Multicast group(MCG) if it wasn't previously created, can send Multicast messages to the group but doesn't receive any messages from the MCG. IB: Send Only Full Member requires a query of ClassPortInfo to determine if SM/SA supports this option. If SM/SA doesn't support Send-Only there will be no join request sent and an error will be returned. ETH: When Send Only Full Member is requested no IGMP join will be sent. Signed-off-by: Alex Vesker <valex@mellanox.com> Reviewed by: Hal Rosenstock <hal@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-03IB/mlx4: Add diagnostic hardware countersMark Bloch1-0/+3
Expose IB diagnostic hardware counters. The counters count IB events and are applicable for IB and RoCE. The counters can be divided into two groups, per device and per port. Device counters are always exposed. Port counters are exposed only if the firmware supports per port counters. rq_num_dup and sq_num_to are only exposed if we have firmware support for them, if we do, we expose them per device and per port. rq_num_udsdprd and num_cqovf are device only counters. rq - denotes responder. sq - denotes requester. |-----------------------|---------------------------------------| | Name | Description | |-----------------------|---------------------------------------| |rq_num_lle | Number of local length errors | |-----------------------|---------------------------------------| |sq_num_lle | number of local length errors | |-----------------------|---------------------------------------| |rq_num_lqpoe | Number of local QP operation errors | |-----------------------|---------------------------------------| |sq_num_lqpoe | Number of local QP operation errors | |-----------------------|---------------------------------------| |rq_num_lpe | Number of local protection errors | |-----------------------|---------------------------------------| |sq_num_lpe | Number of local protection errors | |-----------------------|---------------------------------------| |rq_num_wrfe | Number of CQEs with error | |-----------------------|---------------------------------------| |sq_num_wrfe | Number of CQEs with error | |-----------------------|---------------------------------------| |sq_num_mwbe | Number of Memory Window bind errors | |-----------------------|---------------------------------------| |sq_num_bre | Number of bad response errors | |-----------------------|---------------------------------------| |sq_num_rire | Number of Remote Invalid request | | | errors | |-----------------------|---------------------------------------| |rq_num_rire | Number of Remote Invalid request | | | errors | |-----------------------|---------------------------------------| |sq_num_rae | Number of remote access errors | |-----------------------|---------------------------------------| |rq_num_rae | Number of remote access errors | |-----------------------|---------------------------------------| |sq_num_roe | Number of remote operation errors | |-----------------------|---------------------------------------| |sq_num_tree | Number of transport retries exceeded | | | errors | |-----------------------|---------------------------------------| |sq_num_rree | Number of RNR NAK retries exceeded | | | errors | |-----------------------|---------------------------------------| |rq_num_rnr | Number of RNR NAKs sent | |-----------------------|---------------------------------------| |sq_num_rnr | Number of RNR NAKs received | |-----------------------|---------------------------------------| |rq_num_oos | Number of Out of Sequence requests | | | received | |-----------------------|---------------------------------------| |sq_num_oos | Number of Out of Sequence NAKs | | | received | |-----------------------|---------------------------------------| |rq_num_udsdprd | Number of UD packets silently | | | discarded on the Receive Queue due to | | | lack of receive descriptor | |-----------------------|---------------------------------------| |rq_num_dup | Number of duplicate requests received | |-----------------------|---------------------------------------| |sq_num_to | Number of time out received | |-----------------------|---------------------------------------| |num_cqovf | Number of CQ overflows | |-----------------------|---------------------------------------| Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-03net/mlx4: Query performance and diagnostics countersMark Bloch1-0/+3
Add a function to query diagnostics counters from the firmware. Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-03net/mlx4: Add diagnostic counters capability bitMark Bloch1-0/+1
Add a bit that indicates if the firmware supports per port diagnostic counters. Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-04extable.h: add stddef.h so "NULL" definition is not implicitPaul Gortmaker1-0/+2
While not an issue now, eventually we will have independent users of the extable.h file and we will stop sourcing it via module.h header. In testing that pending work, with very sparse builds, characteristic of an "allnoconfig" on various architectures, we can sometimes hit an instance where the very basic standard definitions aren't present, resulting in: include/linux/extable.h:26:9: error: 'NULL' undeclared (first use in this function) To be clear, this isn't a regression, since currently extable.h is only used by module.h -- however, we will need this addition present before we start migrating exception table users off module.h and onto extable.h during the next release cycle. Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-08-04modules: add ro_after_init supportJessica Yu2-2/+5
Add ro_after_init support for modules by adding a new page-aligned section in the module layout (after rodata) for ro_after_init data and enabling RO protection for that section after module init runs. Signed-off-by: Jessica Yu <jeyu@redhat.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-08-04exceptions: fork exception table content from module.h into extable.hPaul Gortmaker2-25/+32
For historical reasons (i.e. pre-git) the exception table stuff was buried in the middle of the module.h file. I noticed this while doing an audit for needless includes of module.h and found core kernel files (both arch specific and arch independent) were just including module.h for this. The converse is also true, in that conventional drivers, be they for filesystems or actual hardware peripherals or similar, do not normally care about the exception tables. Here we fork the exception table content out of module.h into a new file called extable.h -- and temporarily include it into the module.h itself. Then we will work our way across the arch independent and arch specific files needing just exception table content, and move them off module.h and onto extable.h Once that is done, we can remove the extable.h from module.h and in doing it like this, we avoid introducing build failures into the git history. The gain here is that module.h gets a bit smaller, across all modular drivers that we build for allmodconfig. Also the core files that only need exception table stuff don't have an include of module.h that brings in lots of extra stuff and just looks generally out of place. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-08-03Merge branch 'for-viro' of ↵Al Viro1-5/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs into for-linus
2016-08-03vfs: make dentry_needs_remove_privs() internalMiklos Szeredi1-1/+0
Only used by the vfs. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2016-08-03vfs: remove file_needs_remove_privs()Miklos Szeredi1-4/+0
This function is now unused. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2016-08-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds1-1/+1
Pull networking fixes from David Miller: 1) Fix several cases of missing of_node_put() calls in various networking drivers. From Peter Chen. 2) Don't try to remove unconfigured VLANs in qed driver, from Yuval Mintz. 3) Unbalanced locking in TIPC error handling, from Wei Yongjun. 4) Fix lockups in CPDMA driver, from Grygorii Strashko. 5) More MACSEC refcount et al fixes, from Sabrina Dubroca. 6) Fix MAC address setting in r8169 during runtime suspend, from Chun-Hao Lin. 7) Various printf format specifier fixes, from Heinrich Schuchardt. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (59 commits) qed: Fail driver load in 100g MSI mode. ethernet: ti: davinci_emac: add missing of_node_put after calling of_parse_phandle ethernet: stmicro: stmmac: add missing of_node_put after calling of_parse_phandle ethernet: stmicro: stmmac: dwmac-socfpga: add missing of_node_put after calling of_parse_phandle ethernet: renesas: sh_eth: add missing of_node_put after calling of_parse_phandle ethernet: renesas: ravb_main: add missing of_node_put after calling of_parse_phandle ethernet: marvell: pxa168_eth: add missing of_node_put after calling of_parse_phandle ethernet: marvell: mvpp2: add missing of_node_put after calling of_parse_phandle ethernet: marvell: mvneta: add missing of_node_put after calling of_parse_phandle ethernet: hisilicon: hns: hns_dsaf_main: add missing of_node_put after calling of_parse_phandle ethernet: hisilicon: hns: hns_dsaf_mac: add missing of_node_put after calling of_parse_phandle ethernet: cavium: octeon: add missing of_node_put after calling of_parse_phandle ethernet: aurora: nb8800: add missing of_node_put after calling of_parse_phandle ethernet: arc: emac_main: add missing of_node_put after calling of_parse_phandle ethernet: apm: xgene: add missing of_node_put after calling of_parse_phandle ethernet: altera: add missing of_node_put 8139too: fix system hang when there is a tx timeout event. qed: Fix error return code in qed_resc_alloc() net: qlcnic: avoid superfluous assignement dsa: b53: remove redundant if ...
2016-08-02IB/hfi1: Allow for non-double word multiple message sizes for user SDMAIra Weiny1-1/+1
The driver pads non-double word multiple message sizes but it doesn't account for this padding when the packet length is calculated. Also, the data length is miscalculated for message sizes less than 4 bytes due to the bit representation in LRH. And there's a check for non-double word multiple message sizes that prevents these messages from being sent. This patch fixes length miscalculations and enables the functionality to send non-double word multiple message sizes. Reviewed-by: Harish Chegondi <harish.chegondi@intel.com> Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-02IB/rdmavt: Eliminate redundant opcode test in mr ref clearIra Weiny1-6/+4
The use of the specific opcode test is redundant since all ack entry users correctly manipulate the mr pointer to selectively trigger the reference clearing. The overly specific test hinders the use of implementation specific operations. The change needs to get rid of the union to insure that an atomic value is not seen as an MR pointer. Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-02Merge branch 'akpm' (patches from Andrew)Linus Torvalds27-431/+735
Merge yet more updates from Andrew Morton: - the rest of ocfs2 - various hotfixes, mainly MM - quite a bit of misc stuff - drivers, fork, exec, signals, etc. - printk updates - firmware - checkpatch - nilfs2 - more kexec stuff than usual - rapidio updates - w1 things * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (111 commits) ipc: delete "nr_ipc_ns" kcov: allow more fine-grained coverage instrumentation init/Kconfig: add clarification for out-of-tree modules config: add android config fragments init/Kconfig: ban CONFIG_LOCALVERSION_AUTO with allmodconfig relay: add global mode support for buffer-only channels init: allow blacklisting of module_init functions w1:omap_hdq: fix regression w1: add helper macro module_w1_family w1: remove need for ida and use PLATFORM_DEVID_AUTO rapidio/switches: add driver for IDT gen3 switches powerpc/fsl_rio: apply changes for RIO spec rev 3 rapidio: modify for rev.3 specification changes rapidio: change inbound window size type to u64 rapidio/idt_gen2: fix locking warning rapidio: fix error handling in mbox request/release functions rapidio/tsi721_dma: advance queue processing from transfer submit call rapidio/tsi721: add messaging mbox selector parameter rapidio/tsi721: add PCIe MRRS override parameter rapidio/tsi721_dma: add channel mask and queue size parameters ...
2016-08-02Merge tag 'ceph-for-4.8-rc1' of git://github.com/ceph/ceph-clientLinus Torvalds8-40/+160
Pull Ceph updates from Ilya Dryomov: "The highlights are: - RADOS namespace support in libceph and CephFS (Zheng Yan and myself). The stopgaps added in 4.5 to deny access to inodes in namespaces are removed and CEPH_FEATURE_FS_FILE_LAYOUT_V2 feature bit is now fully supported - A large rework of the MDS cap flushing code (Zheng Yan) - Handle some of ->d_revalidate() in RCU mode (Jeff Layton). We were overly pessimistic before, bailing at the first sight of LOOKUP_RCU On top of that we've got a few CephFS bug fixes, a couple of cleanups and Arnd's workaround for a weird genksyms issue" * tag 'ceph-for-4.8-rc1' of git://github.com/ceph/ceph-client: (34 commits) ceph: fix symbol versioning for ceph_monc_do_statfs ceph: Correctly return NXIO errors from ceph_llseek ceph: Mark the file cache as unreclaimable ceph: optimize cap flush waiting ceph: cleanup ceph_flush_snaps() ceph: kick cap flushes before sending other cap message ceph: introduce an inode flag to indicates if snapflush is needed ceph: avoid sending duplicated cap flush message ceph: unify cap flush and snapcap flush ceph: use list instead of rbtree to track cap flushes ceph: update types of some local varibles ceph: include 'follows' of pending snapflush in cap reconnect message ceph: update cap reconnect message to version 3 ceph: mount non-default filesystem by name libceph: fsmap.user subscription support ceph: handle LOOKUP_RCU in ceph_d_revalidate ceph: allow dentry_lease_is_valid to work under RCU walk ceph: clear d_fsinfo pointer under d_lock ceph: remove ceph_mdsc_lease_release ceph: don't use ->d_time ...
2016-08-02ipc: delete "nr_ipc_ns"Alexey Dobriyan1-2/+0
Write-only variable. Link: http://lkml.kernel.org/r/20160708214356.GA6785@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02rapidio/switches: add driver for IDT gen3 switchesAlexandre Bounine1-0/+2
Add RapidIO switch driver for IDT Gen3 switch devices: RXS1632 and RXS2448. [alexandre.bounine@idt.com: fixup for original driver patch] Link: http://lkml.kernel.org/r/1469137596-18241-1-git-send-email-alexandre.bounine@idt.com Link: http://lkml.kernel.org/r/1469125134-16523-14-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Tested-by: Barry Wood <barry.wood@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02rapidio: modify for rev.3 specification changesAlexandre Bounine2-42/+136
Implement changes made in RapidIO specification rev.3 to LP-Serial Physical Layer register definitions: - use per-port register offset calculations based on LP-Serial Extended Features Block (EFB) Register Map type (I or II) with different per-port offset step (0x20 vs 0x40 respectfully). - remove deprecated Parallel Physical layer definitions and related code. [alexandre.bounine@idt.com: fix DocBook warning for gen3 update] Link: http://lkml.kernel.org/r/1469191173-19338-1-git-send-email-alexandre.bounine@idt.com Link: http://lkml.kernel.org/r/1469125134-16523-12-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Tested-by: Barry Wood <barry.wood@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02rapidio: change inbound window size type to u64Alexandre Bounine1-1/+1
Current definition of map_inb() mport operations callback uses u32 type to specify required inbound window (IBW) size. This is limiting factor because existing hardware - tsi721 and fsl_rio, both support IBW size up to 16GB. Changing type of size parameter to u64 to allow IBW size configurations larger than 4GB. [alexandre.bounine@idt.com: remove compiler warning about size of constant] Link: http://lkml.kernel.org/r/20160802184856.2566-1-alexandre.bounine@idt.com Link: http://lkml.kernel.org/r/1469125134-16523-11-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02rapidio: add RapidIO channelized messaging driverAlexandre Bounine2-0/+79
Add channelized messaging driver to support native RapidIO messaging exchange between multiple senders/recipients on devices that use kernel RapidIO subsystem services. This device driver is the result of collaboration within the RapidIO.org Software Task Group (STG) between Texas Instruments, Prodrive Technologies, Nokia Networks, BAE and IDT. Additional input was received from other members of RapidIO.org. The objective was to create a character mode driver interface which exposes messaging capabilities of RapidIO endpoint devices (mports) directly to applications, in a manner that allows the numerous and varied RapidIO implementations to interoperate. This char mode device driver allows user-space applications to setup messaging communication channels using single shared RapidIO messaging mailbox. By default this driver uses RapidIO MBOX_1 (MBOX_0 is reserved for use by RIONET Ethernet emulation driver). [weiyj.lk@gmail.com: rapidio/rio_cm: fix return value check in riocm_init()] Link: http://lkml.kernel.org/r/1469198221-21970-1-git-send-email-alexandre.bounine@idt.com Link: http://lkml.kernel.org/r/1468952862-18056-1-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Tested-by: Barry Wood <barry.wood@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02kexec: add a kexec_crash_loaded() functionPetr Tesarik1-0/+2
Provide a wrapper function to be used by kernel code to check whether a crash kernel is loaded. It returns the same value that can be seen in /sys/kernel/kexec_crash_loaded by userspace programs. I'm exporting the function, because it will be used by Xen, and it is possible to compile Xen modules separately to enable the use of PV drivers with unmodified bare-metal kernels. Link: http://lkml.kernel.org/r/20160713121955.14969.69080.stgit@hananiah.suse.cz Signed-off-by: Petr Tesarik <ptesarik@suse.com> Cc: Juergen Gross <jgross@suse.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Eric Biederman <ebiederm@xmission.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Dave Young <dyoung@redhat.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02kexec: allow architectures to override boot mappingRussell King1-0/+40
kexec physical addresses are the boot-time view of the system. For certain ARM systems (such as Keystone 2), the boot view of the system does not match the kernel's view of the system: the boot view uses a special alias in the lower 4GB of the physical address space. To cater for these kinds of setups, we need to translate between the boot view physical addresses and the normal kernel view physical addresses. This patch extracts the current transation points into linux/kexec.h, and allows an architecture to override the functions. Due to the translations required, we unfortunately end up with six translation functions, which are reduced down to four that the architecture can override. [akpm@linux-foundation.org: kexec.h needs asm/io.h for phys_to_virt()] Link: http://lkml.kernel.org/r/E1b8koP-0004HZ-Vf@rmk-PC.armlinux.org.uk Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Keerthy <j-keerthy@ti.com> Cc: Pratyush Anand <panand@redhat.com> Cc: Vitaly Andrianov <vitalya@ti.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Dave Young <dyoung@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02kdump: arrange for paddr_vmcoreinfo_note() to return phys_addr_tRussell King1-1/+1
On PAE systems (eg, ARM LPAE) the vmcore note may be located above 4GB physical on 32-bit architectures, so we need a wider type than "unsigned long" here. Arrange for paddr_vmcoreinfo_note() to return a phys_addr_t, thereby allowing it to be located above 4GB. This makes no difference for kexec-tools, as they already assume a 64-bit type when reading from this file. Link: http://lkml.kernel.org/r/E1b8koK-0004HS-K9@rmk-PC.armlinux.org.uk Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Reviewed-by: Pratyush Anand <panand@redhat.com> Acked-by: Baoquan He <bhe@redhat.com> Cc: Keerthy <j-keerthy@ti.com> Cc: Vitaly Andrianov <vitalya@ti.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Dave Young <dyoung@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02kexec: don't invoke OOM-killer for control page allocationRussell King1-1/+1
If we are unable to find a suitable page when allocating the control page, do not invoke the OOM-killer: killing processes probably isn't going to help. Link: http://lkml.kernel.org/r/E1b8ko9-0004HG-R5@rmk-PC.armlinux.org.uk Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Reviewed-by: Pratyush Anand <panand@redhat.com> Acked-by: Baoquan He <bhe@redhat.com> Cc: Keerthy <j-keerthy@ti.com> Cc: Vitaly Andrianov <vitalya@ti.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Dave Young <dyoung@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02cpumask: fix code commentGeliang Tang1-1/+1
Fix code comment for cpumask_parse(). Link: http://lkml.kernel.org/r/71aae2c60ae5dae0cf554199ce6aea8f88c69347.1465380581.git.geliangtang@gmail.com Signed-off-by: Geliang Tang <geliangtang@gmail.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02signal: consolidate {TS,TLF}_RESTORE_SIGMASK codeAndy Lutomirski2-41/+63
In general, there's no need for the "restore sigmask" flag to live in ti->flags. alpha, ia64, microblaze, powerpc, sh, sparc (64-bit only), tile, and x86 use essentially identical alternative implementations, placing the flag in ti->status. Replace those optimized implementations with an equally good common implementation that stores it in a bitfield in struct task_struct and drop the custom implementations. Additional architectures can opt in by removing their TIF_RESTORE_SIGMASK defines. Link: http://lkml.kernel.org/r/8a14321d64a28e40adfddc90e18a96c086a6d6f9.1468522723.git.luto@kernel.org Signed-off-by: Andy Lutomirski <luto@kernel.org> Tested-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@suse.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dmitry Safonov <dsafonov@virtuozzo.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02nilfs2: move ioctl interface and disk layout to uapi separatelyRyusuke Konishi2-306/+314
The header file "include/linux/nilfs2_fs.h" is composed of parts for ioctl and disk format, and both are intended to be shared with user space programs. This moves them to the uapi directory "include/uapi/linux" splitting the file to "nilfs2_api.h" and "nilfs2_ondisk.h". The following minor changes are accompanied by this migration: - nilfs_direct_node struct in nilfs2/direct.h is converged to nilfs2_ondisk.h because it's an on-disk structure. - inline functions nilfs_rec_len_from_disk() and nilfs_rec_len_to_disk() are moved to nilfs2/dir.c. Link: http://lkml.kernel.org/r/1465825507-3407-4-git-send-email-konishi.ryusuke@lab.ntt.co.jp Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02firmware: support loading into a pre-allocated bufferStephen Boyd2-0/+9
Some systems are memory constrained but they need to load very large firmwares. The firmware subsystem allows drivers to request this firmware be loaded from the filesystem, but this requires that the entire firmware be loaded into kernel memory first before it's provided to the driver. This can lead to a situation where we map the firmware twice, once to load the firmware into kernel memory and once to copy the firmware into the final resting place. This creates needless memory pressure and delays loading because we have to copy from kernel memory to somewhere else. Let's add a request_firmware_into_buf() API that allows drivers to request firmware be loaded directly into a pre-allocated buffer. This skips the intermediate step of allocating a buffer in kernel memory to hold the firmware image while it's read from the filesystem. It also requires that drivers know how much memory they'll require before requesting the firmware and negates any benefits of firmware caching because the firmware layer doesn't manage the buffer lifetime. For a 16MB buffer, about half the time is spent performing a memcpy from the buffer to the final resting place. I see loading times go from 0.081171 seconds to 0.047696 seconds after applying this patch. Plus the vmalloc pressure is reduced. This is based on a patch from Vikram Mulukutla on codeaurora.org: https://www.codeaurora.org/cgit/quic/la/kernel/msm-3.18/commit/drivers/base/firmware_class.c?h=rel/msm-3.18&id=0a328c5f6cd999f5c591f172216835636f39bcb5 Link: http://lkml.kernel.org/r/20160607164741.31849-4-stephen.boyd@linaro.org Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Cc: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: Vikram Mulukutla <markivx@codeaurora.org> Cc: Mark Brown <broonie@kernel.org> Cc: Ming Lei <ming.lei@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02radix-tree: fix comment about "exceptional" bitsRoss Zwisler1-1/+1
The bottom two bits of radix tree entries are reserved for special use by the radix tree code itself. A comment detailing their usage was added by commit 3bcadd6fa6c4 ("radix-tree: free up the bottom bit of exceptional entries for reuse") This comment states that if the bottom two bits are '11', this means that this is a locked exceptional entry. It turns out that this bit combination was never actually used. Radix tree locking for DAX was indeed implemented, but it actually used the third LSB: /* We use lowest available exceptional entry bit for locking */ #define RADIX_DAX_ENTRY_LOCK (1 << RADIX_TREE_EXCEPTIONAL_SHIFT) This locking code was also made specific to the DAX code instead of being generally implemented in radix-tree.h. So, fix the comment. Link: http://lkml.kernel.org/r/1468997731-2155-1-git-send-email-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Jan Kara <jack@suse.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02printk: add kernel parameter to control writes to /dev/kmsgBorislav Petkov1-0/+9
Add a "printk.devkmsg" kernel command line parameter which controls how userspace writes into /dev/kmsg. It has three options: * ratelimit - ratelimit logging from userspace. * on - unlimited logging from userspace * off - logging from userspace gets ignored The default setting is to ratelimit the messages written to it. This changes the kernel default setting of "on" to "ratelimit" and we do that because we want to keep userspace spamming /dev/kmsg to sane levels. This is especially moot when a small kernel log buffer wraps around and messages get lost. So the ratelimiting setting should be a sane setting where kernel messages should have a bit higher chance of survival from all the spamming. It additionally does not limit logging to /dev/kmsg while the system is booting if we haven't disabled it on the command line. Furthermore, we can control the logging from a lower priority sysctl interface - kernel.printk_devkmsg. That interface will succeed only if printk.devkmsg *hasn't* been supplied on the command line. If it has, then printk.devkmsg is a one-time setting which remains for the duration of the system lifetime. This "locking" of the setting is to prevent userspace from changing the logging on us through sysctl(2). This patch is based on previous patches from Linus and Steven. [bp@suse.de: fixes] Link: http://lkml.kernel.org/r/20160719072344.GC25563@nazgul.tnic Link: http://lkml.kernel.org/r/20160716061745.15795-3-bp@alien8.de Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Dave Young <dyoung@redhat.com> Cc: Franck Bui <fbui@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02ratelimit: extend to print suppressed messages on releaseBorislav Petkov1-5/+33
Extend the ratelimiting facility to print the amount of suppressed lines when it is being released. This use case is aimed at short-termed, burst-like users for which we want to output the suppressed lines stats only once, after it has been disposed of. For an example, see /dev/kmsg usage in a follow-on patch. Also, change the printk() line we issue on release to not use "callbacks" as it is misleading: we're not suppressing callbacks but printk() calls. This has been separated from a previous patch by Linus. Link: http://lkml.kernel.org/r/20160716061745.15795-2-bp@alien8.de Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Dave Young <dyoung@redhat.com> Cc: Franck Bui <fbui@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02printk: create pr_<level> functionsJoe Perches1-15/+33
Using functions instead of macros can reduce overall code size by eliminating unnecessary "KERN_SOH<digit>" prefixes from format strings. defconfig x86-64: $ size vmlinux* text data bss dec hex filename 10193570 4331464 1105920 15630954 ee826a vmlinux.new 10192623 4335560 1105920 15634103 ee8eb7 vmlinux.old As the return value are unimportant and unused in the kernel tree, these new functions return void. Miscellanea: - change pr_<level> macros to call new __pr_<level> functions - change vprintk_nmi and vprintk_default to add LOGLEVEL_<level> argument [akpm@linux-foundation.org: fix LOGLEVEL_INFO, per Joe] Link: http://lkml.kernel.org/r/e16cc34479dfefcae37c98b481e6646f0f69efc3.1466718827.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02dynamic_debug: only add header when usedLuis de Bethencourt2-2/+2
kernel.h header doesn't directly use dynamic debug, instead we can include it in module.c (which used it via kernel.h). printk.h only uses it if CONFIG_DYNAMIC_DEBUG is on, changing the inclusion to only happen in that case. Link: http://lkml.kernel.org/r/1468429793-16917-1-git-send-email-luisbg@osg.samsung.com [luisbg@osg.samsung.com: include dynamic_debug.h in drb_int.h] Link: http://lkml.kernel.org/r/1468447828-18558-2-git-send-email-luisbg@osg.samsung.com Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Borislav Petkov <bp@suse.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02include: mman: use bool instead of int for the return value of ↵Chen Gang1-1/+1
arch_validate_prot For pure bool function's return value, bool is a little better more or less than int. Link: http://lkml.kernel.org/r/1469331815-2026-1-git-send-email-chengang@emindsoft.com.cn Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02Merge tag 'drm-psr-fixes-for-v4.8' of ↵Linus Torvalds1-0/+2
git://people.freedesktop.org/~airlied/linux Pull i915 drm fixes from Dave Airlie: "These are the two fixes from Ville for the bug you are seeing on your HSW laptop. They pretty much disable PSR in some cases where the panel reports a setup time that would cause issues, like you seem to have" * tag 'drm-psr-fixes-for-v4.8' of git://people.freedesktop.org/~airlied/linux: drm/i915: Check PSR setup time vs. vblank length drm/dp: Add drm_dp_psr_setup_time()
2016-08-03Merge branch 'generic-zpos-v8' of ↵Dave Airlie1-0/+20
http://git.linaro.org/people/benjamin.gaignard/kernel into drm-next Merge generic ZPOS property support, this was backed up behind some other changes I didn't have a stable branch point for. Now they are merged to Linus tree this pull is just drm patches. * 'generic-zpos-v8' of http://git.linaro.org/people/benjamin.gaignard/kernel: drm: rcar: use generic code for managing zpos plane property drm/exynos: use generic code for managing zpos plane property drm: sti: use generic zpos for plane drm: add generic zpos property
2016-08-02uapi: move forward declarations of internal structuresAlexey Dobriyan4-4/+2
Don't user forward declarations of internal kernel structures in headers exported to userspace. Move "struct completion;". Move "struct task_struct;". Link: http://lkml.kernel.org/r/20160713215808.GA22486@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02treewide: replace obsolete _refok by __refFabian Frederick3-8/+2
There was only one use of __initdata_refok and __exit_refok __init_refok was used 46 times against 82 for __ref. Those definitions are obsolete since commit 312b1485fb50 ("Introduce new section reference annotations tags: __ref, __refdata, __refconst") This patch removes the following compatibility definitions and replaces them treewide. /* compatibility defines */ #define __init_refok __ref #define __initdata_refok __refdata #define __exit_refok __ref I can also provide separate patches if necessary. (One patch per tree and check in 1 month or 2 to remove old definitions) [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/1466796271-3043-1-git-send-email-fabf@skynet.be Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Ingo Molnar <mingo@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02mm/kasan: get rid of ->state in struct kasan_alloc_metaAndrey Ryabinin1-0/+3
The state of object currently tracked in two places - shadow memory, and the ->state field in struct kasan_alloc_meta. We can get rid of the latter. The will save us a little bit of memory. Also, this allow us to move free stack into struct kasan_alloc_meta, without increasing memory consumption. So now we should always know when the last time the object was freed. This may be useful for long delayed use-after-free bugs. As a side effect this fixes following UBSAN warning: UBSAN: Undefined behaviour in mm/kasan/quarantine.c:102:13 member access within misaligned address ffff88000d1efebc for type 'struct qlist_node' which requires 8 byte alignment Link: http://lkml.kernel.org/r/1470062715-14077-5-git-send-email-aryabinin@virtuozzo.com Reported-by: kernel test robot <xiaolong.ye@intel.com> Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02Merge tag 'pci-v4.8-changes' of ↵Linus Torvalds3-9/+153
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Highlights: - ARM64 support for ACPI host bridges - new drivers for Axis ARTPEC-6 and Marvell Aardvark - new pci_alloc_irq_vectors() interface for MSI-X, MSI, legacy INTx - pci_resource_to_user() cleanup (more to come) Detailed summary: Enumeration: - Move ecam.h to linux/include/pci-ecam.h (Jayachandran C) - Add parent device field to ECAM struct pci_config_window (Jayachandran C) - Add generic MCFG table handling (Tomasz Nowicki) - Refactor pci_bus_assign_domain_nr() for CONFIG_PCI_DOMAINS_GENERIC (Tomasz Nowicki) - Factor DT-specific pci_bus_find_domain_nr() code out (Tomasz Nowicki) Resource management: - Add devm_request_pci_bus_resources() (Bjorn Helgaas) - Unify pci_resource_to_user() declarations (Bjorn Helgaas) - Implement pci_resource_to_user() with pcibios_resource_to_bus() (microblaze, powerpc, sparc) (Bjorn Helgaas) - Request host bridge window resources (designware, iproc, rcar, xgene, xilinx, xilinx-nwl) (Bjorn Helgaas) - Make PCI I/O space optional on ARM32 (Bjorn Helgaas) - Ignore write combining when mapping I/O port space (Bjorn Helgaas) - Claim bus resources on MIPS PCI_PROBE_ONLY set-ups (Bjorn Helgaas) - Remove unicore32 pci=firmware command line parameter handling (Bjorn Helgaas) - Support I/O resources when parsing host bridge resources (Jayachandran C) - Add helpers to request/release memory and I/O regions (Johannes Thumshirn) - Use pci_(request|release)_mem_regions (NVMe, lpfc, GenWQE, ethernet/intel, alx) (Johannes Thumshirn) - Extend pci=resource_alignment to specify device/vendor IDs (Koehrer Mathias (ETAS/ESW5)) - Add generic pci_bus_claim_resources() (Lorenzo Pieralisi) - Claim bus resources on ARM32 PCI_PROBE_ONLY set-ups (Lorenzo Pieralisi) - Remove ARM32 and ARM64 arch-specific pcibios_enable_device() (Lorenzo Pieralisi) - Add pci_unmap_iospace() to unmap I/O resources (Sinan Kaya) - Remove powerpc __pci_mmap_set_pgprot() (Yinghai Lu) PCI device hotplug: - Allow additional bus numbers for hotplug bridges (Keith Busch) - Ignore interrupts during D3cold (Lukas Wunner) Power management: - Enforce type casting for pci_power_t (Andy Shevchenko) - Don't clear d3cold_allowed for PCIe ports (Mika Westerberg) - Put PCIe ports into D3 during suspend (Mika Westerberg) - Power on bridges before scanning new devices (Mika Westerberg) - Runtime resume bridge before rescan (Mika Westerberg) - Add runtime PM support for PCIe ports (Mika Westerberg) - Remove redundant check of pcie_set_clkpm (Shawn Lin) Virtualization: - Add function 1 DMA alias quirk for Marvell 88SE9182 (Aaron Sierra) - Add DMA alias quirk for Adaptec 3805 (Alex Williamson) - Mark Atheros AR9485 and QCA9882 to avoid bus reset (Chris Blake) - Add ACS quirk for Solarflare SFC9220 (Edward Cree) MSI: - Fix PCI_MSI dependencies (Arnd Bergmann) - Add pci_msix_desc_addr() helper (Christoph Hellwig) - Switch msix_program_entries() to use pci_msix_desc_addr() (Christoph Hellwig) - Make the "entries" argument to pci_enable_msix() optional (Christoph Hellwig) - Provide sensible IRQ vector alloc/free routines (Christoph Hellwig) - Spread interrupt vectors in pci_alloc_irq_vectors() (Christoph Hellwig) Error Handling: - Bind DPC to Root Ports as well as Downstream Ports (Keith Busch) - Remove DPC tristate module option (Keith Busch) - Convert Downstream Port Containment driver to use devm_* functions (Mika Westerberg) Generic host bridge driver: - Select IRQ_DOMAIN (Arnd Bergmann) - Claim bus resources on PCI_PROBE_ONLY set-ups (Lorenzo Pieralisi) ACPI host bridge driver: - Add ARM64 acpi_pci_bus_find_domain_nr() (Tomasz Nowicki) - Add ARM64 ACPI support for legacy IRQs parsing and consolidation with DT code (Tomasz Nowicki) - Implement ARM64 AML accessors for PCI_Config region (Tomasz Nowicki) - Support ARM64 ACPI-based PCI host controller (Tomasz Nowicki) Altera host bridge driver: - Check link status before retrain link (Ley Foon Tan) - Poll for link up status after retraining the link (Ley Foon Tan) Axis ARTPEC-6 host bridge driver: - Add PCI_MSI_IRQ_DOMAIN dependency (Arnd Bergmann) - Add DT binding for Axis ARTPEC-6 PCIe controller (Niklas Cassel) - Add Axis ARTPEC-6 PCIe controller driver (Niklas Cassel) Intel VMD host bridge driver: - Use lock save/restore in interrupt enable path (Jon Derrick) - Select device dma ops to override (Keith Busch) - Initialize list item in IRQ disable (Keith Busch) - Use x86_vector_domain as parent domain (Keith Busch) - Separate MSI and MSI-X vector sharing (Keith Busch) Marvell Aardvark host bridge driver: - Add DT binding for the Aardvark PCIe controller (Thomas Petazzoni) - Add Aardvark PCI host controller driver (Thomas Petazzoni) - Add Aardvark PCIe support for Armada 3700 (Thomas Petazzoni) Microsoft Hyper-V host bridge driver: - Fix interrupt cleanup path (Cathy Avery) - Don't leak buffer in hv_pci_onchannelcallback() (Vitaly Kuznetsov) - Handle all pending messages in hv_pci_onchannelcallback() (Vitaly Kuznetsov) NVIDIA Tegra host bridge driver: - Program PADS_REFCLK_CFG* always, not just on legacy SoCs (Stephen Warren) - Program PADS_REFCLK_CFG* registers with per-SoC values (Stephen Warren) - Use lower-case hex consistently for register definitions (Thierry Reding) - Use generic pci_remap_iospace() rather than ARM32-specific one (Thierry Reding) - Stop setting pcibios_min_mem (Thierry Reding) Renesas R-Car host bridge driver: - Drop gen2 dummy I/O port region (Bjorn Helgaas) TI DRA7xx host bridge driver: - Fix return value in case of error (Christophe JAILLET) Xilinx AXI host bridge driver: - Fix return value in case of error (Christophe JAILLET) Miscellaneous: - Make bus_attr_resource_alignment static (Ben Dooks) - Include <asm/dma.h> for isa_dma_bridge_buggy (Ben Dooks) - MAINTAINERS: Add file patterns for PCI device tree bindings (Geert Uytterhoeven) - Make host bridge drivers explicitly non-modular (Paul Gortmaker)" * tag 'pci-v4.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (125 commits) PCI: xgene: Make explicitly non-modular PCI: thunder-pem: Make explicitly non-modular PCI: thunder-ecam: Make explicitly non-modular PCI: tegra: Make explicitly non-modular PCI: rcar-gen2: Make explicitly non-modular PCI: rcar: Make explicitly non-modular PCI: mvebu: Make explicitly non-modular PCI: layerscape: Make explicitly non-modular PCI: keystone: Make explicitly non-modular PCI: hisi: Make explicitly non-modular PCI: generic: Make explicitly non-modular PCI: designware-plat: Make it explicitly non-modular PCI: artpec6: Make explicitly non-modular PCI: armada8k: Make explicitly non-modular PCI: artpec: Add PCI_MSI_IRQ_DOMAIN dependency PCI: Add ACS quirk for Solarflare SFC9220 arm64: dts: marvell: Add Aardvark PCIe support for Armada 3700 PCI: aardvark: Add Aardvark PCI host controller driver dt-bindings: add DT binding for the Aardvark PCIe controller PCI: tegra: Program PADS_REFCLK_CFG* registers with per-SoC values ...
2016-08-03drm/dp: Add drm_dp_psr_setup_time()Ville Syrjälä1-0/+2
Add a small helper to parse the PSR setup time from the DPCD PSR capabilities and return the value in microseconds. v2: Don't waste so many bytes on the psr_setup_time_us[] table Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-03-15 07:47:07 +0000