summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2015-11-11Merge tag 'armsoc-soc' of ↵Linus Torvalds70-296/+1888
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Olof Johansson: "New and/or improved SoC support for this release: Marvell Berlin: - Enable standard DT-based cpufreq - Add CPU hotplug support Freescale: - Ethernet init for i.MX7D - Suspend/resume support for i.MX6UL Allwinner: - Support for R8 chipset (used on NTC's $9 C.H.I.P board) Mediatek: - SMP support for some platforms Uniphier: - L2 support - Cleaned up SMP support, etc. plus a handful of other patches around above functionality, and a few other smaller changes" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (42 commits) ARM: uniphier: rework SMP operations to use trampoline code ARM: uniphier: add outer cache support Documentation: EXYNOS: Update bootloader interface on exynos542x ARM: mvebu: add broken-idle option ARM: orion5x: use mac_pton() helper ARM: at91: pm: at91_pm_suspend_in_sram() must be 8-byte aligned ARM: sunxi: Add R8 support ARM: digicolor: select pinctrl/gpio driver arm: berlin: add CPU hotplug support arm: berlin: use non-self-cleared reset register to reset cpu ARM: mediatek: add smp bringup code ARM: mediatek: enable gpt6 on boot up to make arch timer working soc: mediatek: Fix random hang up issue while kernel init soc: ti: qmss: make acc queue support optional in the driver soc: ti: add firmware file name as part of the driver Documentation: dt: soc: Add description for knav qmss driver ARM: S3C64XX: Use PWM lookup table for mach-smartq ARM: S3C64XX: Use PWM lookup table for mach-hmt ARM: S3C64XX: Use PWM lookup table for mach-crag6410 ARM: S3C64XX: Use PWM lookup table for smdk6410 ...
2015-11-11Merge tag 'armsoc-cleanup' of ↵Linus Torvalds98-4433/+1002
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Olof Johansson: "Again we have a sizable (but not huge) cleanup branch with a net delta of about -3k lines. Main contents here is: - A bunch of development/cleanup of a few PXA boards - Removal of bockw platforms on shmobile, since the platform has now gone completely multiplatform. Whee! - move of the 32kHz timer on OMAP to a proper timesource - Misc cleanup of older OMAP material (incl removal of one board file) - Switch over to new common PWM lookup support for several platforms There's also a handful of other cleanups across the tree, but the above are the major pieces" * tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (103 commits) ARM: OMAP3: hwmod data: Remove legacy mailbox data and addrs ARM: DRA7: hwmod data: Remove spinlock hwmod addrs ARM: OMAP4: hwmod data: Remove spinlock hwmod addrs ARM: DRA7/AM335x/AM437x: hwmod: Remove gpmc address space from hwmod data ARM: Remove __ref on hotplug cpu die path ARM: Remove open-coded version of IRQCHIP_DECLARE arm: omap2: board-generic: use omap4_local_timer_init for AM437x ARM: DRA7/AM335x/AM437x: hwmod: Remove elm address space from hwmod data ARM: OMAP: Remove duplicated operand in OR operation clocksource: ti-32k: make it depend on GENERIC_CLOCKSOURCE ARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode ARM: pxa: raumfeld: make some variables static ARM: OMAP: Change all cpu_is_* occurences to soc_is_* for id.c ARM: OMAP2+: Rename cpu_is macros to soc_is arm: omap2: timer: limit hwmod usage to non-DT boots arm: omap2+: select 32k clocksource driver clocksource: add TI 32.768 Hz counter driver arm: omap2: timer: rename omap_sync32k_timer_init() arm: omap2: timer: always call clocksource_of_init() when DT arm: omap2: timer: move realtime_counter_init() around ...
2015-11-11Merge tag 'armsoc-fixes-nc' of ↵Linus Torvalds5-51/+63
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC non-urgent fixes from Olof Johansson: "A handful of fixes that came in and didn't seem warranted to go in through the 4.3-rc cycle. - MAINTAINERS updates for one of the Broadcom platforms and lpc18xx - A couple of non-critical Davinci bugfixes - A fix to reset irq affinity for TI platforms (silences a warning at reboot)" * tag 'armsoc-fixes-nc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: MAINTAINERS: update lpc18xx entry with more drivers soc: ti: reset irq affinity before freeing irq ARM: cns3xxx: pci: avoid potential stack overflow ARM: davinci: clock: Correct return values for API functions ARM: davinci: re-use %*ph specifier MAINTAINERS: add entry for the Broadcom Northstar Plus SoCs
2015-11-11Fix alloc_node_mem_map() to work on ia64 againTony Luck1-3/+4
In commit a1c34a3bf00a ("mm: Don't offset memmap for flatmem") Laura fixed a problem for Srinivas relating to the bottom 2MB of RAM on an ARM IFC6410 board. One small wrinkle on ia64 is that it allocates the node_mem_map earlier in arch code, so it skips the block of code where "offset" is initialized. Move initialization of start and offset before the check for the node_mem_map so that they will always be available in the latter part of the function. Tested-by: Laura Abbott <laura@labbott.name> Fixes: a1c34a3bf00a (mm: Don't offset memmap for flatmem) Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10Revert "bridge: Allow forward delay to be cfgd when STP enabled"Vlad Yasevich1-4/+9
This reverts commit 34c2d9fb0498c066afbe610b15e18995fd8be792. There are 2 reasons for this revert: 1) The commit in question doesn't do what it says it does. The description reads: "Allow bridge forward delay to be configured when Spanning Tree is enabled." This was already the case before the commit was made. What the commit actually do was disallow invalid values or 'forward_delay' when STP was turned off. 2) The above change was actually a change in the user observed behavior and broke things like libvirt and other network configs that set 'forward_delay' to 0 without enabling STP. The value of 0 is actually used when STP is turned off to immediately mark the bridge as forwarding. Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-10bpf_trace: Make dependent on PERF_EVENTSSteven Rostedt1-1/+1
Arnd Bergmann reported: In my ARM randconfig tests, I'm getting a build error for newly added code in bpf_perf_event_read and bpf_perf_event_output whenever CONFIG_PERF_EVENTS is disabled: kernel/trace/bpf_trace.c: In function 'bpf_perf_event_read': kernel/trace/bpf_trace.c:203:11: error: 'struct perf_event' has no member named 'oncpu' if (event->oncpu != smp_processor_id() || ^ kernel/trace/bpf_trace.c:204:11: error: 'struct perf_event' has no member named 'pmu' event->pmu->count) This can happen when UPROBE_EVENT is enabled but KPROBE_EVENT is disabled. I'm not sure if that is a configuration we care about, otherwise we could prevent this case from occuring by adding Kconfig dependencies. Looking at this further, it's really that UPROBE_EVENT enables PERF_EVENTS. By just having BPF_EVENTS depend on PERF_EVENTS, then all is fine. Link: http://lkml.kernel.org/r/4525348.Aq9YoXkChv@wuerfel Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-10qed: select ZLIB_INFLATEArnd Bergmann1-0/+1
The newly added qlogic qed driver uses the zlib library, but misses the dependency: drivers/built-in.o: In function `qed_alloc_stream_mem': drivers/net/ethernet/qlogic/qed/qed_main.c:707: undefined reference to `zlib_inflate_workspacesize' drivers/built-in.o: In function `qed_unzip_data': drivers/net/ethernet/qlogic/qed/qed_main.c:675: undefined reference to `zlib_inflateInit2' This changes Kconfig to always select zlib when needed. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: fe56b9e6a8d9 ("qed: Add module with basic common support") Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-10Merge tag 'md/4.4-rc0-fix' of git://neil.brown.name/mdLinus Torvalds1-0/+1
Pull config fix for md from Neil Brown: "New config dependency needed as md/raid5 now uses crc32c" * tag 'md/4.4-rc0-fix' of git://neil.brown.name/md: raid5-cache: add crc32c Kconfig dependency
2015-11-10Merge tag 'libnvdimm-for-4.4' of ↵Linus Torvalds14-134/+494
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "Outside of the new ACPI-NFIT hot-add support this pull request is more notable for what it does not contain, than what it does. There were a handful of development topics this cycle, dax get_user_pages, dax fsync, and raw block dax, that need more more iteration and will wait for 4.5. The patches to make devm and the pmem driver NUMA aware have been in -next for several weeks. The hot-add support has not, but is contained to the NFIT driver and is passing unit tests. The coredump support is straightforward and was looked over by Jeff. All of it has received a 0day build success notification across 107 configs. Summary: - Add support for the ACPI 6.0 NFIT hot add mechanism to process updates of the NFIT at runtime. - Teach the coredump implementation how to filter out DAX mappings. - Introduce NUMA hints for allocations made by the pmem driver, and as a side effect all devm allocations now hint their NUMA node by default" * tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: coredump: add DAX filtering for FDPIC ELF coredumps coredump: add DAX filtering for ELF coredumps acpi: nfit: Add support for hot-add nfit: in acpi_nfit_init, break on a 0-length table pmem, memremap: convert to numa aware allocations devm_memremap_pages: use numa_mem_id devm: make allocations numa aware by default devm_memremap: convert to return ERR_PTR devm_memunmap: use devres_release() pmem: kill memremap_pmem() x86, mm: quiet arch_add_memory()
2015-11-10Merge branch 'i2c/for-4.4' of ↵Linus Torvalds44-379/+1683
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - New drivers: UniPhier (with and without FIFO) - some drivers got some bigger rework: ismt, designware, img-scb (rcar had to be reverted because issues were showing up just lately) - ACPI: reworked the device scanning and added support for muxes ... and quite a lot of driver bugfixes and cleanups this time. All files touched outside of the i2c realm have proper acks. * 'i2c/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (70 commits) i2c: rcar: Revert the latest refactoring series i2c: pnx: remove superfluous assignment MAINTAINERS: i2c: drop i2c-pnx maintainer MAINTAINERS: i2c: mark also subdirectories as maintained i2c: cadence: enable driver for ARM64 i2c: i801: Document Intel DNV and Broxton i2c: at91: manage unexpected RXRDY flag when starting a transfer i2c: pnx: Use setup_timer instead of open coding it i2c: add ACPI support for I2C mux ports acpi: add acpi_preset_companion() stub i2c: pxa: Add support for pxa910/988 & new configuration features i2c: au1550: Convert to devm_kzalloc and devm_ioremap_resource i2c-dev: Fix I2C_SLAVE ioctl comment i2c-dev: Fix typo in ioctl name reference i2c: sirf: tune the divider to make i2c bus freq more accurate i2c: imx: Use -ENXIO as error in the NACK case i2c: i801: Add support for Intel Broxton i2c: i801: Add support for Intel DNV i2c: mediatek: add i2c resume support i2c: imx: implement bus recovery ...
2015-11-10Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds9-94/+380
Pull watchdog update from Wim Van Sebroeck: - New driver for Broadcom 7038 Set-Top Box - imx2_wdt: Use register definition in regmap_write() - intel-mid: add Magic Closure flag - watchdog framework improvements: - Use device tree alias for naming watchdogs - propagate ping error code to the user space - Always evaluate new timeout against min_timeout - Use single variable name for struct watchdog_device - include clean-ups * git://www.linux-watchdog.org/linux-watchdog: watchdog: include: add units for timeout values in kerneldoc watchdog: include: fix some typos watchdog: core: propagate ping error code to the user space watchdog: watchdog_dev: Use single variable name for struct watchdog_device watchdog: Always evaluate new timeout against min_timeout watchdog: intel-mid: add Magic Closure flag watchdog: imx2_wdt: Use register definition in regmap_write() watchdog: watchdog_dev: Use device tree alias for naming watchdogs watchdog: Watchdog driver for Broadcom Set-Top Box watchdog: bcm7038: add device tree binding documentation
2015-11-10Merge branch 'hwmon-for-linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging Pull tiny hwmon update from Jean Delvare. * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: (k10temp) Remove duplicate pci-id define
2015-11-10Merge tag 'ntb-4.4' of git://github.com/jonmason/ntbLinus Torvalds3-42/+33
Pull NTB bugfixes from Jon Mason: "NTB Bug fixes for potential NULL pointer accesses, accesses of a freed pointer, invalid buffer pointer, and a compiler warning. Also, unification of upstream/downstream addresses" * tag 'ntb-4.4' of git://github.com/jonmason/ntb: NTB: fix 32-bit compiler warning NTB: unify translation addresses NTB: invalid buf pointer in multi-MW setups NTB: remove unused variable NTB: fix access of free-ed pointer NTB: Fix issue where we may be accessing NULL ptr
2015-11-10Merge tag 'dmaengine-4.4-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds46-2684/+2533
Pull dmaengine updates from Vinod Koul: "This time we have a very typical update which is mostly fixes and updates to drivers and no new drivers. - the biggest change is coming from Peter for edma cleanup which even caused some last minute regression, things seem settled now - idma64 and dw updates - iotdma updates - module autoload fixes for various drivers - scatter gather support for hdmac" * tag 'dmaengine-4.4-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (77 commits) dmaengine: edma: Add dummy driver skeleton for edma3-tptc Revert "ARM: DTS: am33xx: Use the new DT bindings for the eDMA3" Revert "ARM: DTS: am437x: Use the new DT bindings for the eDMA3" dmaengine: dw: some Intel devices has no memcpy support dmaengine: dw: platform: provide platform data for Intel dmaengine: dw: don't override platform data with autocfg dmaengine: hdmac: Add scatter-gathered memset support dmaengine: hdmac: factorise memset descriptor allocation dmaengine: virt-dma: Fix kernel-doc annotations ARM: DTS: am437x: Use the new DT bindings for the eDMA3 ARM: DTS: am33xx: Use the new DT bindings for the eDMA3 dmaengine: edma: New device tree binding dmaengine: Kconfig: edma: Select TI_DMA_CROSSBAR in case of ARCH_OMAP dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx dmaengine: edma: Merge the of parsing functions dmaengine: edma: Do not allocate memory for edma_rsv_info in case of DT boot dmaengine: edma: Refactor the dma device and channel struct initialization dmaengine: edma: Get qDMA channel information from HW also dmaengine: edma: Merge map_dmach_to_queue into assign_channel_eventq dmaengine: edma: Correct PaRAM access function names (_parm_ to _param_) ...
2015-11-10Merge tag 'rtc-v4.4' of ↵Linus Torvalds23-83/+908
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Core: - Fix rtctest error path New drivers: - Microcrystal RV8803 Subsystem wide cleanups: - remove misuse of IRQF_NO_SUSPEND flag Drivers: - at91rm9200: clear RTC alarm status flag prior to suspending - davinci: remove incorrect reference to probe function - ds1307: Fix alarm programming for mcp794xx - ds1390: trickle charger support, fix ds1390_get_reg - isl1208: Pass the IRQF_ONESHOT flag - opal: fix type of token - pcf2127: fix RTC_READ_VL, remove useless driver version - pcf85063: return an error when date is invalid - pcf8563: add CLKOUT to common clock framework - rx8025: remove unnecessary braces - s3c: Set year, month, day value for setting alarm - stmp3xxx: unify register access macros - License fixes: pcf2127, da9063 - wakeup-source support for isl12057 and opal" * tag 'rtc-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (23 commits) rtc: Add a driver for Micro Crystal RV8803 rtc: s3c: Set year, month, day value for setting alarm rtc: ds1307: Fix alarm programming for mcp794xx rtc: isl12057: enable support for the standard "wakeup-source" property rtc: opal: enable support for the stardard "wakeup-source" property rtc: isl1208: Pass the IRQF_ONESHOT flag rtc: pcf8563: add CLKOUT to common clock framework rtc: davinci: remove incorrect reference to probe function rtc: at91rm9200: clear RTC alarm status flag prior to suspending rtc: pcf2127: remove useless driver version rtc: pcf2127: fix reading uninitialized value on RTC_READ_VL ioctl rtc: stmp3xxx: unify register access macros rtc: da9063: GPL copyright inconsistency fix rtc: pcf85063: return an error when date is invalid rtc: rx8025: remove unnecessary braces rtc: ds1343: remove misuse of IRQF_NO_SUSPEND flag rtc: ab8500: remove misuse of IRQF_NO_SUSPEND flag rtc: pl031: remove misuse of IRQF_NO_SUSPEND flag rtc: opal: fix type of token rtc: ds1390: Add trickle charger device tree binding ...
2015-11-10Merge tag 'fbdev-4.4' of ↵Linus Torvalds12-192/+506
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux Pull fbdev updates from Tomi Valkeinen: - omap: fix hdmi audio configuration issue - ssd1307fb: add ssd1309 support - tridentfb: support DDC - gxt4500: enable support for non-PPC platforms * tag 'fbdev-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: radeonfb: Deinline large functions gxt4500: enable panning gxt4500: Use arch_phys_wc_* for framebuffer gxt4500: fix color order gxt4500: fix 16bpp 565 mode gxt4500: enable on non-PPC architectures tridentfb: Add DDC support fb_ddc: Allow I2C adapters without SCL read capability fbdev: ssd1307fb: add ssd1309 support fbdev: ssd1307fb: alphabetize headers video/omap: remove invalid check OMAPDSS: hdmi: Reconfigure and restart audio when display is enabled
2015-11-10Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds468-9797/+53338
Pull drm updates from Dave Airlie: "I Was Almost Tempted To Capitalise Every Word, but then I decided I couldn't read it myself! I've also got one pull request for the sti driver outstanding. It relied on a commit in Greg's tree and I didn't find out in time, that commit is in your tree now so I might send that along once this is merged. I also had the accidental misfortune to have access to a Skylake on my desk for a few days, and I've had to encourage Intel to try harder, which seems to be happening now. Here is the main drm-next pull request for 4.4. Highlights: New driver: vc4 driver for the Rasberry Pi VPU. (From Eric Anholt at Broadcom.) Core: Atomic fbdev support Atomic helpers for runtime pm dp/aux i2c STATUS_UPDATE handling struct_mutex usage cleanups. Generic of probing support. Documentation: Kerneldoc for VGA switcheroo code. Rename to gpu instead of drm to reflect scope. i915: Skylake GuC firmware fixes HPD A support VBT backlight fallbacks Fastboot by default for some systems FBC work BXT/SKL workarounds Skylake deeper sleep state fixes amdgpu: Enable GPU scheduler by default New atombios opcodes GPUVM debugging options Stoney support. Fencing cleanups. radeon: More efficient CS checking nouveau: gk20a instance memory handling improvements. Improved PGOB detection and GK107 support Kepler GDDR5 PLL statbility improvement G8x/GT2xx reclock improvements new userspace API compatiblity fixes. virtio-gpu: Add 3D support - qemu 2.5 has it merged for it's gtk backend. msm: Initial msm88896 (snapdragon 8200) exynos: HDMI cleanups Enable mixer driver byt default Add DECON-TV support vmwgfx: Move to using memremap + fixes. rcar-du: Add support for R8A7793/4 DU armada: Remove support for non-component mode Improved plane handling Power savings while in DPMS off. tda998x: Remove unused slave encoder support Use more HDMI helpers Fix EDID read handling dwhdmi: Interlace video mode support for ipu-v3/dw_hdmi Hotplug state fixes Audio driver integration imx: More color formats support. tegra: Minor fixes/improvements" [ Merge fixup: remove unused variable 'dev' that had all uses removed in commit 4e270f088011: "drm/gem: Drop struct_mutex requirement from drm_gem_mmap_obj" ] * 'drm-next' of git://people.freedesktop.org/~airlied/linux: (764 commits) drm/vmwgfx: Relax irq locking somewhat drm/vmwgfx: Properly flush cursor updates and page-flips drm/i915/skl: disable display side power well support for now drm/i915: Extend DSL readout fix to BDW and SKL. drm/i915: Do graphics device reset under forcewake drm/i915: Skip fence installation for objects with rotated views (v4) vga_switcheroo: Drop client power state VGA_SWITCHEROO_INIT drm/amdgpu: group together common fence implementation drm/amdgpu: remove AMDGPU_FENCE_OWNER_MOVE drm/amdgpu: remove now unused fence functions drm/amdgpu: fix fence fallback check drm/amdgpu: fix stoping the scheduler timeout drm/amdgpu: cleanup on error in amdgpu_cs_ioctl() drm/i915: Fix locking around GuC firmware load drm/amdgpu: update Fiji's Golden setting drm/amdgpu: update Fiji's rev id drm/amdgpu: extract common code in vi_common_early_init drm/amd/scheduler: don't oops on failure to load drm/amdgpu: don't oops on failure to load (v2) drm/amdgpu: don't VT switch on suspend ...
2015-11-10direct-io: be sure to assign dio->bio_bdev for both pathsJens Axboe1-3/+3
btrfs sets ->submit_io(), and we failed to set the block dev for that path. That resulted in a potential NULL dereference when we later wait for IO in dio_await_one(). Reported-by: kernel test robot <ying.huang@linux.intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-10Merge branch 'akpm' (patches from Andrew)Linus Torvalds61-221/+104
Merge third patch-bomb from Andrew Morton: "We're pretty much done over here - I'm still waiting for a nouveau merge so I can cleanly finish up Christoph's dma-mapping rework. - bunch of small misc stuff - fold abs64() into abs(), remove abs64() - new_valid_dev() cleanups - binfmt_elf_fdpic feature work" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (24 commits) fs/binfmt_elf_fdpic.c: provide NOMMU loader for regular ELF binaries fs/stat.c: remove unnecessary new_valid_dev() check fs/reiserfs/namei.c: remove unnecessary new_valid_dev() check fs/nilfs2/namei.c: remove unnecessary new_valid_dev() check fs/ncpfs/dir.c: remove unnecessary new_valid_dev() check fs/jfs: remove unnecessary new_valid_dev() checks fs/hpfs/namei.c: remove unnecessary new_valid_dev() check fs/f2fs/namei.c: remove unnecessary new_valid_dev() check fs/ext2/namei.c: remove unnecessary new_valid_dev() check fs/exofs/namei.c: remove unnecessary new_valid_dev() check fs/btrfs/inode.c: remove unnecessary new_valid_dev() check fs/9p: remove unnecessary new_valid_dev() checks include/linux/kdev_t.h: old/new_valid_dev() can return bool include/linux/kdev_t.h: remove unused huge_valid_dev() kmap_atomic_to_page() has no users, remove it drivers/scsi/cxgbi: fix build with EXTRA_CFLAGS dma: remove external references to dma_supported Documentation/sysctl/vm.txt: fix misleading code reference of overcommit_memory remove abs64() kernel.h: make abs() work with 64-bit types ...
2015-11-10net: fix a race in dst_release()Eric Dumazet1-1/+1
Only cpu seeing dst refcount going to 0 can safely dereference dst->flags. Otherwise an other cpu might already have freed the dst. Fixes: 27b75c95f10d ("net: avoid RCU for NOCACHE dst") Reported-by: Greg Thelen <gthelen@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-10net: mvneta: Fix memory use after free.Justin Maggard1-1/+1
After changing an interface's MTU, then bringing the interface down and back up again, I immediately saw tons of kernel messages like below. The reason for this bad behavior is mvneta_rxq_drop_pkts(), which calls dma_unmap_single() on already-freed memory. So we need to switch the order of those two operations. [ 152.388518] BUG: Bad page state in process ifconfig pfn:1b518 [ 152.388526] page:dff3dbc0 count:0 mapcount:0 mapping: (null) index:0x0 [ 152.395178] flags: 0x200(arch_1) [ 152.398441] page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set [ 152.398446] bad because of flags: [ 152.398450] flags: 0x200(arch_1) [ 152.401716] Modules linked in: [ 152.401728] CPU: 0 PID: 1453 Comm: ifconfig Tainted: P B O 4.1.12.armada.1 #1 [ 152.401733] Hardware name: Marvell Armada 370/XP (Device Tree) [ 152.401749] [<c0015b1c>] (unwind_backtrace) from [<c0011d8c>] (show_stack+0x10/0x14) [ 152.401762] [<c0011d8c>] (show_stack) from [<c06aa68c>] (dump_stack+0x74/0x90) [ 152.401772] [<c06aa68c>] (dump_stack) from [<c0096c08>] (bad_page+0xc4/0x124) [ 152.401783] [<c0096c08>] (bad_page) from [<c0099378>] (get_page_from_freelist+0x4e4/0x644) [ 152.401794] [<c0099378>] (get_page_from_freelist) from [<c0099620>] (__alloc_pages_nodemask+0x148/0x784) [ 152.401805] [<c0099620>] (__alloc_pages_nodemask) from [<c00ac658>] (kmalloc_order+0x10/0x20) [ 152.401818] [<c00ac658>] (kmalloc_order) from [<c04c6f44>] (mvneta_rx_refill+0xc4/0xe8) [ 152.401830] [<c04c6f44>] (mvneta_rx_refill) from [<c04c96c0>] (mvneta_setup_rxqs+0x298/0x39c) [ 152.401842] [<c04c96c0>] (mvneta_setup_rxqs) from [<c04c9904>] (mvneta_open+0x3c/0x150) [ 152.401853] [<c04c9904>] (mvneta_open) from [<c0597764>] (__dev_open+0xac/0x124) [ 152.401864] [<c0597764>] (__dev_open) from [<c05979e4>] (__dev_change_flags+0x8c/0x148) [ 152.401875] [<c05979e4>] (__dev_change_flags) from [<c0597ac0>] (dev_change_flags+0x18/0x48) [ 152.401886] [<c0597ac0>] (dev_change_flags) from [<c060d308>] (devinet_ioctl+0x620/0x6d0) [ 152.401897] [<c060d308>] (devinet_ioctl) from [<c057d810>] (sock_ioctl+0x64/0x288) [ 152.401908] [<c057d810>] (sock_ioctl) from [<c00dcb7c>] (do_vfs_ioctl+0x78/0x608) [ 152.401918] [<c00dcb7c>] (do_vfs_ioctl) from [<c00dd170>] (SyS_ioctl+0x64/0x74) [ 152.401930] [<c00dd170>] (SyS_ioctl) from [<c000f3a0>] (ret_fast_syscall+0x0/0x3c) Signed-off-by: Justin Maggard <jmaggard@netgear.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-10Merge tag 'nfs-for-4.4-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds44-597/+1687
Pull NFS client updates from Trond Myklebust: "Highlights include: New features: - RDMA client backchannel from Chuck - Support for NFSv4.2 file CLONE using the btrfs ioctl Bugfixes + cleanups: - Move socket data receive out of the bottom halves and into a workqueue - Refactor NFSv4 error handling so synchronous and asynchronous RPC handles errors identically. - Fix a panic when blocks or object layouts reads return a bad data length - Fix nfsroot so it can handle a 1024 byte long path. - Fix bad usage of page offset in bl_read_pagelist - Various NFSv4 callback cleanups+fixes - Fix GETATTR bitmap verification - Support hexadecimal number for sunrpc debug sysctl files" * tag 'nfs-for-4.4-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (53 commits) Sunrpc: Supports hexadecimal number for sysctl files of sunrpc debug nfs: Fix GETATTR bitmap verification nfs: Remove unused xdr page offsets in getacl/setacl arguments fs/nfs: remove unnecessary new_valid_dev check SUNRPC: fix variable type NFS: Enable client side NFSv4.1 backchannel to use other transports pNFS/flexfiles: Add support for FF_FLAGS_NO_IO_THRU_MDS pNFS/flexfiles: When mirrored, retry failed reads by switching mirrors SUNRPC: Remove the TCP-only restriction in bc_svc_process() svcrdma: Add backward direction service for RPC/RDMA transport xprtrdma: Handle incoming backward direction RPC calls xprtrdma: Add support for sending backward direction RPC replies xprtrdma: Pre-allocate Work Requests for backchannel xprtrdma: Pre-allocate backward rpc_rqst and send/receive buffers SUNRPC: Abstract backchannel operations xprtrdma: Saving IRQs no longer needed for rb_lock xprtrdma: Remove reply tasklet xprtrdma: Use workqueue to process RPC/RDMA replies xprtrdma: Replace send and receive arrays xprtrdma: Refactor reply handler error handling ...
2015-11-10Merge tag 'gfs2-merge-window' of ↵Linus Torvalds11-62/+73
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 Pull gfs2 updates from Bob Peterson: "Here is a list of patches we've accumulated for GFS2 for the current upstream merge window. There are only six patches this time: 1. A cleanup patch from Andreas to remove the gl_spin #define in favor of its value for the sake of clarity. 2. A fix from Andy Price to mark the inode dirty during fallocate. 3. A fix from Andy Price to set s_mode on mount failures to prevent a stack trace. 4 A patch from me to prevent a kernel BUG() in trans_add_meta/trans_add_data due to uninitialized storage. 5. A patch from me to protecting our freeing of the in-core directory hash table to prevent double-free. 6. A fix for a page/block rounding problem that resulted in a metadata coherency problem when the block size != page size" I've got a lot more patches in various stages of review and testing, but I'm afraid they'll have to wait until the next merge window. So next time we're likely to have a lot more" * tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: GFS2: Fix rgrp end rounding problem for bsize < page size GFS2: Protect freeing directory hash table with i_lock spin_lock gfs2: Remove gl_spin define gfs2: Add missing else in trans_add_meta/data GFS2: Set s_mode before parsing mount options GFS2: fallocate: do not rely on file_update_time to mark the inode dirty
2015-11-10Merge branch 'for_linus' of ↵Linus Torvalds4-4/+104
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2 fix from Jan Kara: "Fix for DAX on ext2" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: ext2: Add locking for DAX faults
2015-11-10Merge branch 'parisc-4.4-1' of ↵Linus Torvalds8-52/+44
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc updates from Helge Deller: "We have two patches in here: - The parisc uapi headers have been screwed up since quite some time. This patch fixes some bugs (e.g. endianess not respected in compat_semid64_ds) and cleans them up (e.g. uid_t was used instead of __kernel_uid_t) so that they can be used by userspace again. This patch has been reviewed by Arnd Bergmann and is scheduled for stable kernel series. - Drop the hpux_stat64 struct from stat.h, we do not support HP-UX binaries since kernel 4.0" * 'parisc-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Fixes and cleanups in kernel uapi header files parisc: Drop hpux_stat64 struct from stat.h header file
2015-11-10Merge tag 'nios2-v4.4-rc1' of ↵Linus Torvalds4-52/+1
git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2 Pull nios2 updates from Ley Foon Tan: - nios2: Remove unnecessary #ifdef guards - nios2: Switch to generic __xchg() - nios2: Fix unused variable warning * tag 'nios2-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2: nios2: Remove unnecessary #ifdef guards nios2: Switch to generic __xchg() nios2: Fix unused variable warning
2015-11-10Merge branch 'next/arm64' into next/dtOlof Johansson150-394/+938
Merging in the few patches I had kept separate from main next/dt, since others got merged here directly. * next/arm64: arm64: defconfig: Enable PCI generic host bridge by default arm64: Juno: Add support for the PCIe host bridge on Juno R1 Documentation: of: Document the bindings used by Juno R1 PCIe host bridge arm64: dts: mt8173: Add clocks for SCPSYS unit arm64: dts: mt8173: Add subsystem clock controller device nodes + Linux 4.3-rc5
2015-11-10Merge tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linuxLinus Torvalds29-248/+1210
Pull xtensa updates from Chris Zankel: - fix remaining issues with noMMU cores - fix build for cores w/o cache or zero overhead loop options - fix boot of secondary cores in SMP configuration - add support for DMA to high memory pages - add dma_to_phys and phys_to_dma functions. * tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux: xtensa: implement dma_to_phys and phys_to_dma xtensa: support DMA to high memory Revert "xtensa: cache inquiry and unaligned cache handling functions" xtensa: drop unused sections and remapped reset handlers xtensa: fix secondary core boot in SMP xtensa: add FORCE_MAX_ZONEORDER to Kconfig xtensa: nommu: provide defconfig for de212 on kc705 xtensa: nommu: xtfpga: add kc705 DTS xtensa: add de212 core variant xtensa: nommu: select HAVE_FUTEX_CMPXCHG xtensa: nommu: fix default memory start address xtensa: nommu: provide correct KIO addresses xtensa: nommu: fix USER_RING definition xtensa: xtfpga: fix integer overflow in TASK_SIZE xtensa: fix build for configs without cache options xtensa: fixes for configs without loop option
2015-11-10Merge branch 'for-next' of ↵Linus Torvalds1-6/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu Pull m68knommu/coldfire fix from Greg Ungerer: "Only a single patch, fixes brk area setup problem in nommu environments" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: fs/binfmt_elf_fdpic.c: fix brk area overlap with stack on NOMMU
2015-11-10Merge tag 'modules-next-for-linus' of ↵Linus Torvalds4-15/+49
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Nothing exciting, minor tweaks and cleanups" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: scripts: [modpost] add new sections to white list modpost: Add flag -E for making section mismatches fatal params: don't ignore the rest of cmdline if parse_one() fails modpost: abort if a module symbol is too long
2015-11-10fs/binfmt_elf_fdpic.c: provide NOMMU loader for regular ELF binariesRich Felker1-8/+38
The ELF binary loader in binfmt_elf.c requires an MMU, making it impossible to use regular ELF binaries on NOMMU archs. However, the FDPIC ELF loader in binfmt_elf_fdpic.c is fully capable as a loader for plain ELF, which requires constant displacements between LOAD segments, since it already supports FDPIC ELF files flagged as needing constant displacement. This patch adjusts the FDPIC ELF loader to accept non-FDPIC ELF files on NOMMU archs. They are treated identically to FDPIC ELF files with the constant-displacement flag bit set, except for personality, which must match the ABI of the program being loaded; the PER_LINUX_FDPIC personality controls how the kernel interprets function pointers passed to sigaction. Files that do not set a stack size requirement explicitly are given a default stack size (matching the amount of committed stack the normal ELF loader for MMU archs would give them) rather than being rejected; this is necessary because plain ELF files generally do not declare stack requirements in theit program headers. Only ET_DYN (PIE) format ELF files are supported, since loading at a fixed virtual address is not possible on NOMMU. This patch was developed and tested on J2 (SH2-compatible) but should be usable immediately on all archs where binfmt_elf_fdpic is available. Moreover, by providing dummy definitions of the elf_check_fdpic() and elf_check_const_displacement() macros for archs which lack an FDPIC ABI, it should be possible to enable building of binfmt_elf_fdpic on all other NOMMU archs and thereby give them ELF binary support, but I have not yet tested this. The motivation for using binfmt_elf_fdpic.c rather than adapting binfmt_elf.c to NOMMU is that the former already has all the necessary code to work properly on NOMMU and has already received widespread real-world use and testing. I hope this is not controversial. I'm not really happy with having to unset the FDPIC_FUNCPTRS personality bit when loading non-FDPIC ELF. This bit should really reset automatically on execve, since otherwise, executing non-ELF binaries (e.g. bFLT) from an FDPIC process will leave the personality in the wrong state and severely break signal handling. But that's a separate, existing bug and I don't know the right place to fix it. Signed-off-by: Rich Felker <dalias@libc.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Matt Mackall <mpm@selenic.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: Oleg Endo <oleg.endo@t-online.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/stat.c: remove unnecessary new_valid_dev() checkYaowei Bai1-2/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/reiserfs/namei.c: remove unnecessary new_valid_dev() checkYaowei Bai1-3/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/nilfs2/namei.c: remove unnecessary new_valid_dev() checkYaowei Bai1-3/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Acked-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>
2015-11-10fs/ncpfs/dir.c: remove unnecessary new_valid_dev() checkYaowei Bai1-2/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Petr Vandrovec <petr@vandrovec.name> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Fabian Frederick <fabf@skynet.be> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/jfs: remove unnecessary new_valid_dev() checksYaowei Bai2-6/+0
new_valid_dev() always returns 1, so the !new_valid_dev() checks are not needed. Remove them. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/hpfs/namei.c: remove unnecessary new_valid_dev() checkYaowei Bai1-2/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/f2fs/namei.c: remove unnecessary new_valid_dev() checkYaowei Bai1-3/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: Changman Lee <cm224.lee@samsung.com> Cc: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/ext2/namei.c: remove unnecessary new_valid_dev() checkYaowei Bai1-3/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Jan Kara <jack@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/exofs/namei.c: remove unnecessary new_valid_dev() checkYaowei Bai1-3/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Acked-by: Boaz Harrosh <ooo@electrozaur.com> Cc: Benny Halevy <bhalevy@primarydata.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/btrfs/inode.c: remove unnecessary new_valid_dev() checkYaowei Bai1-3/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Chris Mason <clm@fb.com> Cc: Josef Bacik <jbacik@fb.com> Acked-by: David Sterba <dsterba@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10fs/9p: remove unnecessary new_valid_dev() checksYaowei Bai2-6/+0
new_valid_dev() always returns 1, so the !new_valid_dev() check is not needed. Remove it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Ron Minnich <rminnich@sandia.gov> Cc: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10include/linux/kdev_t.h: old/new_valid_dev() can return boolYaowei Bai1-2/+2
Make old/new_valid_dev return bool due to these two particular functions only using either one or zero as their return value. No functional change. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10include/linux/kdev_t.h: remove unused huge_valid_dev()Yaowei Bai1-5/+0
There's no user of huge_valid_dev() any more, so remove it. No functional change. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10kmap_atomic_to_page() has no users, remove itNicolas Pitre16-103/+0
Removal started in commit 5bbeed12bdc3 ("sparc32: drop unused kmap_atomic_to_page"). Let's do it across the whole tree. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10drivers/scsi/cxgbi: fix build with EXTRA_CFLAGSJiri Slaby2-2/+2
EXTRA_CFLAGS are intended to be used on the command line, not by Kbuild. In case of cxgbi drivers, use of EXTRA_CFLAGS results in a compilation failure: drivers/scsi/cxgbi/cxgb4i/cxgb4i.c:24:21: fatal error: t4_regs.h: No such file or directory when building like: $ make drivers/scsi/cxgbi/ EXTRA_CFLAGS=-Wwhatever Use ccflags-y instead of EXTRA_CFLAGS. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10dma: remove external references to dma_supportedChristoph Hellwig4-16/+3
Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10Documentation/sysctl/vm.txt: fix misleading code reference of overcommit_memoryChun Chen1-1/+1
The origin document references to cap_vm_enough_memory is because cap_vm_enough_memory invoked __vm_enough_memory before and it no longer does now. Signed-off-by: Chun Chen <ramichen@tencent.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10remove abs64()Andrew Morton13-19/+16
Switch everything to the new and more capable implementation of abs(). Mainly to give the new abs() a bit of a workout. Cc: Michal Nazarewicz <mina86@mina86.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> 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>
2015-11-10kernel.h: make abs() work with 64-bit typesMichal Nazarewicz1-21/+24
For 64-bit arguments, the abs macro casts it to an int which leads to lost precision and may cause incorrect results. To deal with 64-bit types abs64 macro has been introduced but still there are places where abs macro is used incorrectly. To deal with the problem, expand abs macro such that it operates on s64 type when dealing with 64-bit types while still returning long when dealing with smaller types. This fixes one known bug (per John): The internal clocksteering done for fine-grained error correction uses a : logarithmic approximation, so any time adjtimex() adjusts the clock : steering, timekeeping_freqadjust() quickly approximates the correct clock : frequency over a series of ticks. : : Unfortunately, the logic in timekeeping_freqadjust(), introduced in commit : dc491596f639438 (Rework frequency adjustments to work better w/ nohz), : used the abs() function with a s64 error value to calculate the size of : the approximated adjustment to be made. : : Per include/linux/kernel.h: "abs() should not be used for 64-bit types : (s64, u64, long long) - use abs64()". : : Thus on 32-bit platforms, this resulted in the clocksteering to take a : quite dampended random walk trying to converge on the proper frequency, : which caused the adjustments to be made much slower then intended (most : easily observed when large adjustments are made). Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Reported-by: John Stultz <john.stultz@linaro.org> Tested-by: John Stultz <john.stultz@linaro.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> 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>