- Sep 09, 2017
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Linus Torvalds authored
The fix in the parent made me look at that function, and react to how illogical and illegible the array initializer was. Use named array indexes to make it clearer what is going on, and make the initializer not depend silently on the exact index numbers. [ The initializer now also shows an odd inconsistency in the naming: note the IWCM vs IWPM.. - Linus ] Cc: Leon Romanovsky <leonro@mellanox.com> Cc: Doug Ledford <dledford@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Leon Romanovsky authored
The netlink message sent with type == 0, which doesn't have any client behind it, caused to the overflow in max_num_ops array. Fix it by declaring zero number of ops for the first client. Fixes: c9901724 ("RDMA/netlink: Remove netlink clients infrastructure") Signed-off-by:
Leon Romanovsky <leon@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- Sep 08, 2017
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Linus Torvalds authored
Remove our use of 'gperf' for generating perfect hashes from some of our build tools. This removal was prompted by Masahiro Yamada sending out a patch that removes all our pre-generated files, and when I tested it, I noticed that the gperf version I have (3.1) apparently generates code that no longer works with out code-base because the function interfaces generated by gperf have changed. We really don't care that much, and the gperf people changed their interfaces in ways that makes it annoying to work with them. Tools that make it hard to use them should not be used, and the kernel is not at all interested in some autoconf mess. So remove the gperf dependency entirely. It turns out that if you ignore the pre-generated files, the use of gperf apparently saved us a whopping fifteen lines of code. It obviously wasn't worth it, considering that the pre-generated files are about 500 lines. I sent this out as a patch about three weeks ago, and got absolutely zero responses. So let's see if anybody notices now that I merge it. Because there might be serious bugs here, but it WorksForMe(tm). * gperf-removal: Remove gperf usage from toolchain
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI updates from James Bottomley: "This is mostly updates of the usual suspects: lpfc, qla2xxx, hisi_sas, megaraid_sas, zfcp and a host of minor updates. The major driver change here is the elimination of the block based cciss driver in favour of the SCSI based hpsa driver (which now drives all the legacy cases cciss used to be required for). Plus a reset handler clean up and the redo of the SAS SMP handler to use bsg lib" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits) scsi: scsi-mq: Always unprepare before requeuing a request scsi: Show .retries and .jiffies_at_alloc in debugfs scsi: Improve requeuing behavior scsi: Call scsi_initialize_rq() for filesystem requests scsi: qla2xxx: Reset the logo flag, after target re-login. scsi: qla2xxx: Fix slow mem alloc behind lock scsi: qla2xxx: Clear fc4f_nvme flag scsi: qla2xxx: add missing includes for qla_isr scsi: qla2xxx: Fix an integer overflow in sysfs code scsi: aacraid: report -ENOMEM to upper layer from aac_convert_sgraw2() scsi: aacraid: get rid of one level of indentation scsi: aacraid: fix indentation errors scsi: storvsc: fix memory leak on ring buffer busy scsi: scsi_transport_sas: switch to bsg-lib for SMP passthrough scsi: smartpqi: remove the smp_handler stub scsi: hpsa: remove the smp_handler stub scsi: bsg-lib: pass the release callback through bsg_setup_queue scsi: Rework handling of scsi_device.vpd_pg8[03] scsi: Rework the code for caching Vital Product Data (VPD) scsi: rcu: Introduce rcu_swap_protected() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printkLinus Torvalds authored
Pull printk updates from Petr Mladek: - Do not allow use of freed init data and code even when boot consoles are forced to stay. Also check for the init memory more precisely. - Some code clean up by starting contributors. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: printk: Clean up do_syslog() error handling printk/console: Enhance the check for consoles using init memory printk/console: Always disable boot consoles that use init memory before it is freed printk: Modify operators of printed_len and text_len
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/auditLinus Torvalds authored
Pull audit updates from Paul Moore: "A small pull request for audit this time, only four patches and only two with any real code changes. Those two changes are the removal of a pointless SELinux AVC initialization audit event and a fix to improve the audit timestamp overhead. The other two patches are comment cleanup and administrative updates, nothing very exciting. Everything passes our tests" * tag 'audit-pr-20170907' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: audit: update the function comments selinux: remove AVC init audit log message audit: update the audit info in MAINTAINERS audit: Reduce overhead using a coarse clock
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull secureexec update from Kees Cook: "This series has the ultimate goal of providing a sane stack rlimit when running set*id processes. To do this, the bprm_secureexec LSM hook is collapsed into the bprm_set_creds hook so the secureexec-ness of an exec can be determined early enough to make decisions about rlimits and the resulting memory layouts. Other logic acting on the secureexec-ness of an exec is similarly consolidated. Capabilities needed some special handling, but the refactoring removed other special handling, so that was a wash" * tag 'secureexec-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: exec: Consolidate pdeath_signal clearing exec: Use sane stack rlimit under secureexec exec: Consolidate dumpability logic smack: Remove redundant pdeath_signal clearing exec: Use secureexec for clearing pdeath_signal exec: Use secureexec for setting dumpability LSM: drop bprm_secureexec hook commoncap: Move cap_elevated calculation into bprm_set_creds commoncap: Refactor to remove bprm_secureexec hook smack: Refactor to remove bprm_secureexec hook selinux: Refactor to remove bprm_secureexec hook apparmor: Refactor to remove bprm_secureexec hook binfmt: Introduce secureexec flag exec: Correct comments about "point of no return" exec: Rename bprm->cred_prepared to called_set_creds
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull gcc plugins update from Kees Cook: "This finishes the porting work on randstruct, and introduces a new option to structleak, both noted below: - For the randstruct plugin, enable automatic randomization of structures that are entirely function pointers (along with a couple designated initializer fixes). - For the structleak plugin, provide an option to perform zeroing initialization of all otherwise uninitialized stack variables that are passed by reference (Ard Biesheuvel)" * tag 'gcc-plugins-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: gcc-plugins: structleak: add option to init all vars used as byref args randstruct: Enable function pointer struct detection drivers/net/wan/z85230.c: Use designated initializers drm/amd/powerplay: rv: Use designated initializers
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull pstore update from Kees Cook: "Make pstore permissions more versatile by removing CAP_SYSLOG requirement and defining more restrictive root directory DAC permissions default (0750, which can be adjust after boot unlike the CAP_SYSLOG check). Suggested by Nick Kralevich" * tag 'pstore-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: Revert "pstore: Honor dmesg_restrict sysctl on dmesg dumps" pstore: Make default pstorefs root dir perms 0750
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs update from Steve French: "Enable xattr support for smb3 and also a bugfix" * tag '4.14-smb3-xattr-enable' of git://git.samba.org/sfrench/cifs-2.6: cifs: Check for timeout on Negotiate stage cifs: Add support for writing attributes on SMB2+ cifs: Add support for reading attributes on SMB2+
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git://git.kvack.org/~bcrl/aio-nextLinus Torvalds authored
Pull aio fix from Ben LaHaise: "Improve aio-nr counting on large SMP systems. It has been in linux-next for quite some time" * git://git.kvack.org/~bcrl/aio-next: fs: aio: fix the increment of aio-nr and counting against aio-max-nr
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fsLinus Torvalds authored
Pull quota scaling updates from Jan Kara: "This contains changes to make the quota subsystem more scalable. Reportedly it improves number of files created per second on ext4 filesystem on fast storage by about a factor of 2x" * 'quota_scaling' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (28 commits) quota: Add lock annotations to struct members quota: Reduce contention on dq_data_lock fs: Provide __inode_get_bytes() quota: Inline dquot_[re]claim_reserved_space() into callsite quota: Inline inode_{incr,decr}_space() into callsites quota: Inline functions into their callsites ext4: Disable dirty list tracking of dquots when journalling quotas quota: Allow disabling tracking of dirty dquots in a list quota: Remove dq_wait_unused from dquot quota: Move locking into clear_dquot_dirty() quota: Do not dirty bad dquots quota: Fix possible corruption of dqi_flags quota: Propagate ->quota_read errors from v2_read_file_info() quota: Fix error codes in v2_read_file_info() quota: Push dqio_sem down to ->read_file_info() quota: Push dqio_sem down to ->write_file_info() quota: Push dqio_sem down to ->get_next_id() quota: Push dqio_sem down to ->release_dqblk() quota: Remove locking for writing to the old quota format quota: Do not acquire dqio_sem for dquot overwrites in v2 format ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fsLinus Torvalds authored
Pull UDF, reiserfs, quota, fsnotify cleanups from Jan Kara: "Several UDF, reiserfs, quota and fsnotify cleanups. Note that there is also a patch updating MAINTAINERS entry for notification subsystem to point to me as a maintainer since current entries are stale" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fsnotify: make dnotify_fsnotify_ops const isofs: Delete an unnecessary variable initialisation in isofs_read_inode() isofs: Adjust four checks for null pointers isofs: Delete an error message for a failed memory allocation in isofs_read_inode() quota_v2: Delete an error message for a failed memory allocation in v2_read_file_info() fs-udf: Delete an error message for a failed memory allocation in two functions fs-udf: Improve six size determinations fs-udf: Adjust two checks for null pointers reiserfs: fix spelling mistake: "tranasction" -> "transaction" MAINTAINERS: Update entries for notification subsystem uapi/linux/quota.h: Do not include linux/errno.h
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linuxLinus Torvalds authored
Pull DeviceTree updates from Rob Herring: "There's a few orphans in the conversion to %pOF printf specifiers included here that no one else picked up. Summary: - Convert more DT code to use of_property_read_* API. - Improve DT overlay support when adding multiple overlays - Convert printk's to %pOF format specifiers. Most went via subsystem trees, but picked up the remaining orphans - Correct unittests to use preferred "okay" for "status" property value - Add a KASLR seed property - Vendor prefixes for Mellanox, Theobroma System, Adaptrum, Moxa - Fix modalias buffer handling - Clean-up of include paths for building dtbs - Add bindings for amc6821, isl1208, tsl2x7x, srf02, and srf10 devices - Add nvmem bindings for MediaTek MT7623 and MT7622 SoC - Add compatible string for Allwinner H5 Mali-450 GPU - Fix links to old OpenFirmware docs with new mirror on devicetree.org - Remove status property from binding doc examples" * tag 'devicetree-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (45 commits) devicetree: Adjust status "ok" -> "okay" under drivers/of/ dt-bindings: Remove "status" from examples dt-bindings: pinctrl: sh-pfc: Use generic node name dt-bindings: Add vendor Mellanox dt-binding: net/phy: fix interrupts description virt: Convert to using %pOF instead of full_name macintosh: Convert to using %pOF instead of full_name ide: pmac: Convert to using %pOF instead of full_name microblaze: Convert to using %pOF instead of full_name dt-bindings: usb: musb: Grammar s/the/to/, s/is/are/ of: Use PLATFORM_DEVID_NONE definition of/device: Fix of_device_get_modalias() buffer handling of/device: Prevent buffer overflow in of_device_modalias() dt-bindings: add amc6821, isl1208 trivial bindings dt-bindings: add vendor prefix for Theobroma Systems of: search scripts/dtc/include-prefixes path for both CPP and DTC of: remove arch/$(SRCARCH)/boot/dts from include search path for CPP of: remove drivers/of/testcase-data from include search path for CPP of: return of_get_cpu_node from of_cpu_device_node_get if CPUs are not registered iio: srf08: add device tree binding for srf02 and srf10 ...
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git://anongit.freedesktop.org/git/drm-intelLinus Torvalds authored
Pull i916 drm fixes from Rodrigo Vivi: "Since Dave is on paternity leave we are sending drm/i915 fixes for v4.14-rc1 directly to you as he had asked us to do. The most critical ones are the GPU reset fix for gen2-4 and GVT fix for a regression that is blocking gvt init to work on your tree. The rest is general fixes for patches coming from drm-next" Acked-by:
Dave Airlie <airlied@redhat.com> * tag 'drm-intel-next-fixes-2017-09-07' of git://anongit.freedesktop.org/git/drm-intel: drm/i915: Re-enable GTT following a device reset drm/i915: Annotate user relocs with __user drm/i915: Silence sparse by using gfp_t drm/i915: Add __rcu to radix tree slot pointer drm/i915: Fix the missing PPAT cache attributes on CNL drm/i915/gvt: Remove one duplicated MMIO drm/i915: Fix enum pipe vs. enum transcoder for the PCH transcoder drm/i915: Make i2c lock ops static drm/i915: Make i9xx_load_ycbcr_conversion_matrix() static drm/i915/edp: Increase T12 panel delay to 900 ms to fix DP AUX CH timeouts drm/i915: Ignore duplicate VMA stored within the per-object handle LUT drm/i915: Skip fence alignemnt check for the CCS plane drm/i915: Treat fb->offsets[] as a raw byte offset instead of a linear offset drm/i915: Always wake the device to flush the GTT drm/i915: Recreate vmapping even when the object is pinned drm/i915: Quietly cancel FBC activation if CRTC is turned off before worker
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git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-ledsLinus Torvalds authored
Pull LED updates from Jacek Anaszewski: "LED class drivers improvements: leds-pca955x: - add Device Tree support and bindings - use devm_led_classdev_register() - add GPIO support - prevent crippled LED class device name - check for I2C errors leds-gpio: - add optional retain-state-shutdown DT property - allow LED to retain state at shutdown leds-tlc591xx: - merge conditional tests - add missing of_node_put leds-powernv: - delete an error message for a failed memory allocation in powernv_led_create() leds-is31fl32xx.c - convert to using custom %pOF printf format specifier Constify attribute_group structures in: - leds-blinkm - leds-lm3533 Make several arrays static const in: - leds-aat1290 - leds-lp5521 - leds-lp5562 - leds-lp8501" * tag 'leds_for_4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: leds: pca955x: check for I2C errors leds: gpio: Allow LED to retain state at shutdown dt-bindings: leds: gpio: Add optional retain-state-shutdown property leds: powernv: Delete an error message for a failed memory allocation in powernv_led_create() leds: lp8501: make several arrays static const leds: lp5562: make several arrays static const leds: lp5521: make several arrays static const leds: aat1290: make array max_mm_current_percent static const leds: pca955x: Prevent crippled LED device name leds: lm3533: constify attribute_group structure dt-bindings: leds: add pca955x leds: pca955x: add GPIO support leds: pca955x: use devm_led_classdev_register leds: pca955x: add device tree support leds: Convert to using %pOF instead of full_name leds: blinkm: constify attribute_group structures. leds: tlc591xx: add missing of_node_put leds: tlc591xx: merge conditional tests
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git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds authored
Pull dmaengine updates from Vinod Koul: "This one features the usual updates to the drivers and one good part of removing DA_SG from core as it has no users. Summary: - Remove DMA_SG support as we have no users for this feature - New driver for Altera / Intel mSGDMA IP core - Support for memset in dmatest and qcom_hidma driver - Update for non cyclic mode in k3dma, bunch of update in bam_dma, bcm sba-raid - Constify device ids across drivers" * tag 'dmaengine-4.14-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (52 commits) dmaengine: sun6i: support V3s SoC variant dmaengine: sun6i: make gate bit in sun8i's DMA engines a common quirk dmaengine: rcar-dmac: document R8A77970 bindings dmaengine: xilinx_dma: Fix error code format specifier dmaengine: altera: Use macros instead of structs to describe the registers dmaengine: ti-dma-crossbar: Fix dra7 reserve function dmaengine: pl330: constify amba_id dmaengine: pl08x: constify amba_id dmaengine: bcm-sba-raid: Remove redundant SBA_REQUEST_STATE_COMPLETED dmaengine: bcm-sba-raid: Explicitly ACK mailbox message after sending dmaengine: bcm-sba-raid: Add debugfs support dmaengine: bcm-sba-raid: Remove redundant SBA_REQUEST_STATE_RECEIVED dmaengine: bcm-sba-raid: Re-factor sba_process_deferred_requests() dmaengine: bcm-sba-raid: Pre-ack async tx descriptor dmaengine: bcm-sba-raid: Peek mbox when we have no free requests dmaengine: bcm-sba-raid: Alloc resources before registering DMA device dmaengine: bcm-sba-raid: Improve sba_issue_pending() run duration dmaengine: bcm-sba-raid: Increase number of free sba_request dmaengine: bcm-sba-raid: Allow arbitrary number free sba_request dmaengine: bcm-sba-raid: Remove reqs_free_count from sba_device ...
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlightLinus Torvalds authored
Pull backlight updates from Lee Jones: "Fix-ups: - Constification; pwm_bl - Use new GPIO API; gpio_backlight - Remove unused functionality; gpio_backlight Bug Fixes: - Fix artificial MAXREG limit; lm3630a_bl" * tag 'backlight-next-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: gpio_backlight: Delete pdata inversion backlight: gpio_backlight: Convert to use GPIO descriptor backlight: pwm_bl: Make of_device_ids const backlight: lm3630a: Bump REG_MAX value to 0x50 instead of 0x1F
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfdLinus Torvalds authored
Pull MFD updates from Lee Jones: "New Drivers - RK805 Power Management IC (PMIC) - ROHM BD9571MWV-M MFD Power Management IC (PMIC) - Texas Instruments TPS68470 Power Management IC (PMIC) & LEDs New Device Support: - Add support for HiSilicon Hi6421v530 to hi6421-pmic-core - Add support for X-Powers AXP806 to axp20x - Add support for X-Powers AXP813 to axp20x - Add support for Intel Sunrise Point LPSS to intel-lpss-pci New Functionality: - Amend API to provide register layout; atmel-smc Fix-ups: - DT re-work; omap, nokia - Header file location change {I2C => MFD}; dm355evm_msp, tps65010 - Fix chip ID formatting issue(s); rk808 - Optionally register touchscreen devices; da9052-core - Documentation improvements; twl-core - Constification; rtsx_pcr, ab8500-core, da9055-i2c, da9052-spi - Drop unnecessary static declaration; max8925-i2c - Kconfig changes (missing deps and remove module support) - Slim down oversized licence statement; hi6421-pmic-core - Use managed resources (devm_*); lp87565 - Supply proper error checking/handling; t7l66xb Bug Fixes: - Fix counter duplication issue; da9052-core - Fix potential NULL deference issue; max8998 - Leave SPI-NOR write-protection bit alone; lpc_ich - Ensure device is put into reset during suspend; intel-lpss - Correct register offset variable size; omap-usb-tll" * tag 'mfd-next-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (61 commits) mfd: intel_soc_pmic: Differentiate between Bay and Cherry Trail CRC variants mfd: intel_soc_pmic: Export separate mfd-cell configs for BYT and CHT dt-bindings: mfd: Add bindings for ZII RAVE devices mfd: omap-usb-tll: Fix register offsets mfd: da9052: Constify spi_device_id mfd: intel-lpss: Put I2C and SPI controllers into reset state on suspend mfd: da9055: Constify i2c_device_id mfd: intel-lpss: Add missing PCI ID for Intel Sunrise Point LPSS devices mfd: t7l66xb: Handle return value of clk_prepare_enable mfd: Add ROHM BD9571MWV-M PMIC DT bindings mfd: intel_soc_pmic_chtwc: Turn Kconfig option into a bool mfd: lp87565: Convert to use devm_mfd_add_devices() mfd: Add support for TPS68470 device mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Haswell/Broadwell mfd: syscon: atmel-smc: Add helper to retrieve register layout mfd: axp20x: Use correct platform device ID for many PEK dt-bindings: mfd: axp20x: Introduce bindings for AXP813 mfd: axp20x: Add support for AXP813 PMIC dt-bindings: mfd: axp20x: Add AXP806 to supported list of chips mfd: Add ROHM BD9571MWV-M MFD PMIC driver ...
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input updates from Dmitry Torokhov: - a new GPIO bit-banging driver implementing PS/2 protocol - a new power key driver for Rockchip RK805 PMIC - bunch of patches constifying various device ID structures - Elan I2C touchpad driver now supports devices with 2 buttons - other assorted fixes * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (76 commits) Input: byd - make array seq static, reduces object code size Input: xilinx_ps2 - fix multiline comment style Input: pxa27x_keypad - handle return value of clk_prepare_enable Input: tegra-kbc - handle return value of clk_prepare_enable Input: PS/2 gpio bit banging driver for serio bus Input: xen-kbdfront - enable auto repeat for xen keyboard frontend driver Input: ambakmi - constify amba_id Input: atmel_mxt_ts - add support for reset line Input: atmel_mxt_ts - use more managed resources Input: wacom_w8001 - constify serio_device_id Input: tsc40 - constify serio_device_id Input: touchwin - constify serio_device_id Input: touchright - constify serio_device_id Input: touchit213 - constify serio_device_id Input: penmount - constify serio_device_id Input: mtouch - constify serio_device_id Input: inexio - constify serio_device_id Input: hampshire - constify serio_device_id Input: gunze - constify serio_device_id Input: fujitsu_ts - constify serio_device_id ...
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git://git.linaro.org/landing-teams/working/fujitsu/integrationLinus Torvalds authored
Pull mailbox updates from Jassi Brar: "Just behavorial changes to a controller driver: the Broadcom's Flexrm mailbox driver has been modifified to support debugfs and TX-Done mechanism by ACK. Nothing for the core mailbox stack" * tag 'mailbox-v4.14' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox: bcm-flexrm-mailbox: Use txdone_ack instead of txdone_poll mailbox: bcm-flexrm-mailbox: Use bitmap instead of IDA mailbox: bcm-flexrm-mailbox: Fix mask used in CMPL_START_ADDR_VALUE() mailbox: bcm-flexrm-mailbox: Add debugfs support mailbox: bcm-flexrm-mailbox: Set IRQ affinity hint for FlexRM ring IRQs
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media updates from Mauro Carvalho Chehab: "Brazil's Independence Day pull request :-) This is one of the biggest media pull requests, with 625 patches affecting almost all parts of media (RC, DVB, V4L2, CEC, docs). This contains: - A lot of new drivers: * DVB frontends: mxl5xx, stv0910, stv6111; * camera flash: as3645a led driver; * HDMI receiver: adv748X; * camera sensor: Omnivision 6650 5M driver (ov6650); * HDMI CEC: ao-cec meson driver; * V4L2: Qualcom camss driver; * Remote controller: gpio-ir-tx, pwm-ir-tx and zx-irdec drivers. - The DDbridge DVB driver got a massive update, with makes it in sync with modern hardware from that vendor; - There's an important milestone on this series: the DVB documentation was written in 2003, but only started to be updated in 2007. It also used to contain several gaps from the time it was kept out of tree, mentioning error codes and device nodes that never existed upstream. On this series, it received a massive update: all non-deprecated digital TV APIs are now in sync with the current implementation; - Some DVB APIs that aren't used by any upstream driver got removed; - Other parts of the media documentation algo got updated, fixing some bugs on its PDF output and making it compatible with Sphinx version 1.6. As the number of hacks required to build PDF output reduced, I hope we'll have less troubles as newer versions of our documentation toolchain are released (famous last words); - As usual, lots of driver cleanups and improvements" * tag 'media/v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (624 commits) media: leds: as3645a: add V4L2_FLASH_LED_CLASS dependency media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftovers media: Revert "[media] v4l: async: make v4l2 coexist with devicetree nodes in a dt overlay" media: staging: atomisp: sh_css_calloc shall return a pointer to the allocated space media: Revert "[media] lirc_dev: remove superfluous get/put_device() calls" media: add qcom_camss.rst to v4l-drivers rst file media: dvb headers: make checkpatch happier media: dvb uapi: move frontend legacy API to another part of the book media: pixfmt-srggb12p.rst: better format the table for PDF output media: docs-rst: media: Don't use \small for V4L2_PIX_FMT_SRGGB10 documentation media: index.rst: don't write "Contents:" on PDF output media: pixfmt*.rst: replace a two dots by a comma media: vidioc-g-fmt.rst: adjust table format media: vivid.rst: add a blank line to correct ReST format media: v4l2 uapi book: get rid of driver programming's chapter media: format.rst: use the right markup for important notes media: docs-rst: cardlists: change their format to flat-tables media: em28xx-cardlist.rst: update to reflect last changes media: v4l2-event.rst: adjust table to fit on PDF output media: docs: don't show ToC for each part on PDF output ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound updates from Takashi Iwai: "We have touched quite a lot of files but with fewer changes at this cycle; as you can see, most of changes are trivial fixes, especially constification patches. Among the massive attacks by constification gangs, we had a few core changes (mostly for ASoC core), as well the fixes and the updates by major vendors. Some highlights: ALSA core: - Fix possible races in control API user-TLV codes - Small cleanup of PCM core ASoC: - Continued work for componentization; still half-baked, but we're certainly progressing - Use of devres for jack detection GPIOs, rather as a cleanup - Jack detection support for Qualcomm MSM8916 - Support for Allwinner H3, Cirrus Logic CS43130, Intel Kabylake systems with RT5663, Realtek RT274, TI TLV320AIC32x6 and Wolfson WM8523" * tag 'sound-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (512 commits) ALSA: hda/ca0132 - Fix memory leak at error path ALSA: hda: Fix forget to free resource in error handling code path in hda_codec_driver_probe ASoC: cs43130: Fix unused compiler warnings for PM runtime ASoC: cs43130: Fix possible Oops with invalid dev_id ASoC: cs43130: fix spelling mistake: "irq_occurrance" -> "irq_occurrence" ALSA: atmel: Remove leftovers of AVR32 removal ALSA: atmel: convert AC97c driver to GPIO descriptor API ALSA: hda/realtek - Enable jack detection function for Intel ALC700 ALSA: hda: Fix regression of hdmi eld control created based on invalid pcm ASoC: Intel: Skylake: Add IPC to configure the copier secondary pins ASoC: add missing compile rule for max98371 ASoC: add missing compile rule for sirf-audio-codec ASoC: add missing compile rule for max98371 ASoC: cs43130: Add devicetree bindings for CS43130 ASoC: cs43130: Add support for CS43130 codec ASoC: make clock direction configurable in asoc-simple ALSA: ctxfi: Remove null check before kfree ASoC: max98927: Changed device property read function ASoC: max98927: Modified DAPM widget and map to enable/disable VI sense path ASoC: max98927: Added PM suspend and resume function ...
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git://git.kernel.org/pub/scm/linux/kernel/git/shli/mdLinus Torvalds authored
Pull MD updates from Shaohua Li: "This update mainly fixes bugs: - Make raid5 ppl support several ppl from Pawel - Several raid5-cache bug fixes from Song - Bitmap fixes from Neil and Me - One raid1/10 regression fix since 4.12 from Me - Other small fixes and cleanup" * tag 'md/4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: md/bitmap: disable bitmap_resize for file-backed bitmaps. raid5-ppl: Recovery support for multiple partial parity logs md: Runtime support for multiple ppls md/raid0: attach correct cgroup info in bio lib/raid6: align AVX512 constants to 512 bits, not bytes raid5: remove raid5_build_block md/r5cache: call mddev_lock/unlock() in r5c_journal_mode_show md: replace seq_release_private with seq_release md: notify about new spare disk in the container md/raid1/10: reset bio allocated from mempool md/raid5: release/flush io in raid5_do_work() md/bitmap: copy correct data for bitmap super
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds authored
Pull MMC updates from Ulf Hansson: "MMC core: - Continue to refactor the mmc block code to prepare for blkmq - Move mmc block debugfs into block module - Next step for eMMC CMDQ by adding a new mmc host interface for it - Move Kconfig option MMC_DEBUG from core to host - Some additional minor improvements MMC host: - Declare structs as const when applicable - Explicitly request exclusive reset control when applicable - Improve some error paths and other various cleanups - sdhci: Preparations to support SDHCI OMAP - sdhci: Improve some PM related code - sdhci: Re-factoring and modernizations - sdhci-xenon: Add runtime PM and system sleep support - sdhci-xenon: Add support for eMMC HS400 Enhanced Strobe - sdhci-cadence: Add system sleep support - sdhci-of-at91: Improve system sleep support - dw_mmc: Add support for Hisilicon hi3660 - sunxi: Add support for A83T eMMC - sunxi: Add support for DDR52 mode - meson-gx: Add support for UHS-I SD-cards - meson-gx: Cleanups and improvements - tmio: Fix CMD12 (STOP) handling - tmio: Cleanups and improvements - renesas_sdhi: Add r8a7743/5 support - renesas-sdhi: Add support for R-Car Gen3 SDHI DMAC - renesas_sdhi: Cleanups and improvements" * tag 'mmc-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (145 commits) mmc: renesas_sdhi: Add r8a7743/5 support mmc: meson-gx: fix __ffsdi2 undefined on arm32 mmc: sdhci-xenon: add runtime pm support and reimplement standby mmc: core: Move mmc_start_areq() declaration mmc: mmci: stop building qcom dml as module mmc: sunxi: Reset the device at probe time clk: sunxi-ng: Provide a default reset hook mmc: meson-gx: rework tuning function mmc: meson-gx: change default tx phase mmc: meson-gx: implement voltage switch callback mmc: meson-gx: use CCF to handle the clock phases mmc: meson-gx: implement card_busy callback mmc: meson-gx: simplify interrupt handler mmc: meson-gx: work around clk-stop issue mmc: meson-gx: fix dual data rate mode frequencies mmc: meson-gx: rework clock init function mmc: meson-gx: rework clk_set function mmc: meson-gx: rework set_ios function mmc: meson-gx: cfg init overwrite values mmc: meson-gx: initialize sane clk default before clock register ...
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James Bottomley authored
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block layer updates from Jens Axboe: "This is the first pull request for 4.14, containing most of the code changes. It's a quiet series this round, which I think we needed after the churn of the last few series. This contains: - Fix for a registration race in loop, from Anton Volkov. - Overflow complaint fix from Arnd for DAC960. - Series of drbd changes from the usual suspects. - Conversion of the stec/skd driver to blk-mq. From Bart. - A few BFQ improvements/fixes from Paolo. - CFQ improvement from Ritesh, allowing idling for group idle. - A few fixes found by Dan's smatch, courtesy of Dan. - A warning fixup for a race between changing the IO scheduler and device remova. From David Jeffery. - A few nbd fixes from Josef. - Support for cgroup info in blktrace, from Shaohua. - Also from Shaohua, new features in the null_blk driver to allow it to actually hold data, among other things. - Various corner cases and error handling fixes from Weiping Zhang. - Improvements to the IO stats tracking for blk-mq from me. Can drastically improve performance for fast devices and/or big machines. - Series from Christoph removing bi_bdev as being needed for IO submission, in preparation for nvme multipathing code. - Series from Bart, including various cleanups and fixes for switch fall through case complaints" * 'for-4.14/block' of git://git.kernel.dk/linux-block: (162 commits) kernfs: checking for IS_ERR() instead of NULL drbd: remove BIOSET_NEED_RESCUER flag from drbd_{md_,}io_bio_set drbd: Fix allyesconfig build, fix recent commit drbd: switch from kmalloc() to kmalloc_array() drbd: abort drbd_start_resync if there is no connection drbd: move global variables to drbd namespace and make some static drbd: rename "usermode_helper" to "drbd_usermode_helper" drbd: fix race between handshake and admin disconnect/down drbd: fix potential deadlock when trying to detach during handshake drbd: A single dot should be put into a sequence. drbd: fix rmmod cleanup, remove _all_ debugfs entries drbd: Use setup_timer() instead of init_timer() to simplify the code. drbd: fix potential get_ldev/put_ldev refcount imbalance during attach drbd: new disk-option disable-write-same drbd: Fix resource role for newly created resources in events2 drbd: mark symbols static where possible drbd: Send P_NEG_ACK upon write error in protocol != C drbd: add explicit plugging when submitting batches drbd: change list_for_each_safe to while(list_first_entry_or_null) drbd: introduce drbd_recv_header_maybe_unplug ...
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen updates from Juergen Gross: - the new pvcalls backend for routing socket calls from a guest to dom0 - some cleanups of Xen code - a fix for wrong usage of {get,put}_cpu() * tag 'for-linus-4.14b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (27 commits) xen/mmu: set MMU_NORMAL_PT_UPDATE in remap_area_mfn_pte_fn xen: Don't try to call xen_alloc_p2m_entry() on autotranslating guests xen/events: events_fifo: Don't use {get,put}_cpu() in xen_evtchn_fifo_init() xen/pvcalls: use WARN_ON(1) instead of __WARN() xen: remove not used trace functions xen: remove unused function xen_set_domain_pte() xen: remove tests for pvh mode in pure pv paths xen-platform: constify pci_device_id. xen: cleanup xen.h xen: introduce a Kconfig option to enable the pvcalls backend xen/pvcalls: implement write xen/pvcalls: implement read xen/pvcalls: implement the ioworker functions xen/pvcalls: disconnect and module_exit xen/pvcalls: implement release command xen/pvcalls: implement poll command xen/pvcalls: implement accept command xen/pvcalls: implement listen command xen/pvcalls: implement bind command xen/pvcalls: implement connect command ...
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc updates from Michael Ellerman: "Nothing really major this release, despite quite a lot of activity. Just lots of things all over the place. Some things of note include: - Access via perf to a new type of PMU (IMC) on Power9, which can count both core events as well as nest unit events (Memory controller etc). - Optimisations to the radix MMU TLB flushing, mostly to avoid unnecessary Page Walk Cache (PWC) flushes when the structure of the tree is not changing. - Reworks/cleanups of do_page_fault() to modernise it and bring it closer to other architectures where possible. - Rework of our page table walking so that THP updates only need to send IPIs to CPUs where the affected mm has run, rather than all CPUs. - The size of our vmalloc area is increased to 56T on 64-bit hash MMU systems. This avoids problems with the percpu allocator on systems with very sparse NUMA layouts. - STRICT_KERNEL_RWX support on PPC32. - A new sched domain topology for Power9, to capture the fact that pairs of cores may share an L2 cache. - Power9 support for VAS, which is a new mechanism for accessing coprocessors, and initial support for using it with the NX compression accelerator. - Major work on the instruction emulation support, adding support for many new instructions, and reworking it so it can be used to implement the emulation needed to fixup alignment faults. - Support for guests under PowerVM to use the Power9 XIVE interrupt controller. And probably that many things again that are almost as interesting, but I had to keep the list short. Plus the usual fixes and cleanups as always. Thanks to: Alexey Kardashevskiy, Alistair Popple, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Arvind Yadav, Balbir Singh, Benjamin Herrenschmidt, Bhumika Goyal, Breno Leitao, Bryant G. Ly, Christophe Leroy, Cédric Le Goater, Dan Carpenter, Dou Liyang, Frederic Barrat, Gautham R. Shenoy, Geliang Tang, Geoff Levand, Hannes Reinecke, Haren Myneni, Ivan Mikhaylov, John Allen, Julia Lawall, LABBE Corentin, Laurentiu Tudor, Madhavan Srinivasan, Markus Elfring, Masahiro Yamada, Matt Brown, Michael Neuling, Murilo Opsfelder Araujo, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Rashmica Gupta, Rob Herring, Rui Teng, Sam Bobroff, Santosh Sivaraj, Scott Wood, Shilpasri G Bhat, Sukadev Bhattiprolu, Suraj Jitindar Singh, Tobin C. Harding, Victor Aoqui" * tag 'powerpc-4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (321 commits) powerpc/xive: Fix section __init warning powerpc: Fix kernel crash in emulation of vector loads and stores powerpc/xive: improve debugging macros powerpc/xive: add XIVE Exploitation Mode to CAS powerpc/xive: introduce H_INT_ESB hcall powerpc/xive: add the HW IRQ number under xive_irq_data powerpc/xive: introduce xive_esb_write() powerpc/xive: rename xive_poke_esb() in xive_esb_read() powerpc/xive: guest exploitation of the XIVE interrupt controller powerpc/xive: introduce a common routine xive_queue_page_alloc() powerpc/sstep: Avoid used uninitialized error axonram: Return directly after a failed kzalloc() in axon_ram_probe() axonram: Improve a size determination in axon_ram_probe() axonram: Delete an error message for a failed memory allocation in axon_ram_probe() powerpc/powernv/npu: Move tlb flush before launching ATSD powerpc/macintosh: constify wf_sensor_ops structures powerpc/iommu: Use permission-specific DEVICE_ATTR variants powerpc/eeh: Delete an error out of memory message at init time powerpc/mm: Use seq_putc() in two functions macintosh: Convert to using %pOF instead of full_name ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI updates from Ingo Molnar: "The main changes in this cycle were: - Transparently fall back to other poweroff method(s) if EFI poweroff fails (and returns) - Use separate PE/COFF section headers for the RX and RW parts of the ARM stub loader so that the firmware can use strict mapping permissions - Add support for requesting the firmware to wipe RAM at warm reboot - Increase the size of the random seed obtained from UEFI so CRNG fast init can complete earlier - Update the EFI framebuffer address if it points to a BAR that gets moved by the PCI resource allocation code - Enable "reset attack mitigation" of TPM environments: this is enabled if the kernel is configured with CONFIG_RESET_ATTACK_MITIGATION=y. - Clang related fixes - Misc cleanups, constification, refactoring, etc" * 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/bgrt: Use efi_mem_type() efi: Move efi_mem_type() to common code efi/reboot: Make function pointer orig_pm_power_off static efi/random: Increase size of firmware supplied randomness efi/libstub: Enable reset attack mitigation firmware/efi/esrt: Constify attribute_group structures firmware/efi: Constify attribute_group structures firmware/dcdbas: Constify attribute_group structures arm/efi: Split zImage code and data into separate PE/COFF sections arm/efi: Replace open coded constants with symbolic ones arm/efi: Remove pointless dummy .reloc section arm/efi: Remove forbidden values from the PE/COFF header drivers/fbdev/efifb: Allow BAR to be moved instead of claiming it efi/reboot: Fall back to original power-off method if EFI_RESET_SHUTDOWN returns efi/arm/arm64: Add missing assignment of efi.config_table efi/libstub/arm64: Set -fpie when building the EFI stub efi/libstub/arm64: Force 'hidden' visibility for section markers efi/libstub/arm64: Use hidden attribute for struct screen_info reference efi/arm: Don't mark ACPI reclaim memory as MEMBLOCK_NOMAP
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Mauricio Faria de Oliveira authored
Currently, aio-nr is incremented in steps of 'num_possible_cpus() * 8' for io_setup(nr_events, ..) with 'nr_events < num_possible_cpus() * 4': ioctx_alloc() ... nr_events = max(nr_events, num_possible_cpus() * 4); nr_events *= 2; ... ctx->max_reqs = nr_events; ... aio_nr += ctx->max_reqs; .... This limits the number of aio contexts actually available to much less than aio-max-nr, and is increasingly worse with greater number of CPUs. For example, with 64 CPUs, only 256 aio contexts are actually available (with aio-max-nr = 65536) because the increment is 512 in that scenario. Note: 65536 [max aio contexts] / (64*4*2) [increment per aio context] is 128, but make it 256 (double) as counting against 'aio-max-nr * 2': ioctx_alloc() ... if (aio_nr + nr_events > (aio_max_nr * 2UL) || ... goto err_ctx; ... This patch uses the original value of nr_events (from userspace) to increment aio-nr and count against aio-max-nr, which resolves those. Signed-off-by:
Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com> Reported-by:
Lekshmi C. Pillai <lekshmi.cpillai@in.ibm.com> Tested-by:
Lekshmi C. Pillai <lekshmi.cpillai@in.ibm.com> Tested-by:
Paul Nguyen <nguyenp@us.ibm.com> Reviewed-by:
Jeff Moyer <jmoyer@redhat.com> Signed-off-by:
Benjamin LaHaise <bcrl@kvack.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 platform updates from Ingo Molnar: "The main changes include various Hyper-V optimizations such as faster hypercalls and faster/better TLB flushes - and there's also some Intel-MID cleanups" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tracing/hyper-v: Trace hyperv_mmu_flush_tlb_others() x86/hyper-v: Support extended CPU ranges for TLB flush hypercalls x86/platform/intel-mid: Make several arrays static, to make code smaller MAINTAINERS: Add missed file for Hyper-V x86/hyper-v: Use hypercall for remote TLB flush hyper-v: Globalize vp_index x86/hyper-v: Implement rep hypercalls hyper-v: Use fast hypercall for HVCALL_SIGNAL_EVENT x86/hyper-v: Introduce fast hypercall implementation x86/hyper-v: Make hv_do_hypercall() inline x86/hyper-v: Include hyperv/ only when CONFIG_HYPERV is set x86/platform/intel-mid: Make 'bt_sfi_data' const x86/platform/intel-mid: Make IRQ allocation a bit more flexible x86/platform/intel-mid: Group timers callbacks together
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- Sep 07, 2017
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libataLinus Torvalds authored
Pull libata updates from Tejun Heo: "Except for the ahci fix that fixes a boot issue, nothing major in this pull request. Some new platform controller support and device specific changes" * 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: libata: zpodd: make arrays cdb static, reduces object code size ahci: don't use MSI for devices with the silly Intel NVMe remapping scheme dt-bindings: ata: add DT bindings for MediaTek SATA controller ata: mediatek: add support for MediaTek SATA controller pata_octeon_cf: use of_property_read_{bool|u32}() cs5536: add support for IDE controller variant ata: sata_gemini: Introduce explicit IDE pin control ata: sata_gemini: Retire custom pin control ata: ahci_platform: Add shutdown handler ata: sata_gemini: explicitly request exclusive reset control ata: Drop unnecessary static ata: Convert to using %pOF instead of full_name
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup updates from Tejun Heo: "Several notable changes this cycle: - Thread mode was merged. This will be used for cgroup2 support for CPU and possibly other controllers. Unfortunately, CPU controller cgroup2 support didn't make this pull request but most contentions have been resolved and the support is likely to be merged before the next merge window. - cgroup.stat now shows the number of descendant cgroups. - cpuset now can enable the easier-to-configure v2 behavior on v1 hierarchy" * 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (21 commits) cpuset: Allow v2 behavior in v1 cgroup cgroup: Add mount flag to enable cpuset to use v2 behavior in v1 cgroup cgroup: remove unneeded checks cgroup: misc changes cgroup: short-circuit cset_cgroup_from_root() on the default hierarchy cgroup: re-use the parent pointer in cgroup_destroy_locked() cgroup: add cgroup.stat interface with basic hierarchy stats cgroup: implement hierarchy limits cgroup: keep track of number of descent cgroups cgroup: add comment to cgroup_enable_threaded() cgroup: remove unnecessary empty check when enabling threaded mode cgroup: update debug controller to print out thread mode information cgroup: implement cgroup v2 thread support cgroup: implement CSS_TASK_ITER_THREADED cgroup: introduce cgroup->dom_cgrp and threaded css_set handling cgroup: add @flags to css_task_iter_start() and implement CSS_TASK_ITER_PROCS cgroup: reorganize cgroup.procs / task write path cgroup: replace css_set walking populated test with testing cgrp->nr_populated_csets cgroup: distinguish local and children populated states cgroup: remove now unused list_head @pending in cgroup_apply_cftypes() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds authored
Pull workqueue updates from Tejun Heo: "Nothing major. I introduced a flag collsion bug during v4.13 cycle which is fixed in this pull request. Fortunately, the flag is for debugging / verification and the bug isn't critical" * 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Fix flag collision workqueue: Use TASK_IDLE workqueue: fix path to documentation workqueue: doc change for ST behavior on NUMA systems
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpuLinus Torvalds authored
Pull percpu updates from Tejun Heo: "A lot of changes for percpu this time around. percpu inherited the same area allocator from the original pre-virtual-address-mapped implementation. This was from the time when percpu allocator wasn't used all that much and the implementation was focused on simplicity, with the unfortunate computational complexity of O(number of areas allocated from the chunk) per alloc / free. With the increase in percpu usage, we're hitting cases where the lack of scalability is hurting. The most prominent one right now is bpf perpcu map creation / destruction which may allocate and free a lot of entries consecutively and it's likely that the problem will become more prominent in the future. To address the issue, Dennis replaced the area allocator with hinted bitmap allocator which is more consistent. While the new allocator does perform a bit worse in some cases, it outperforms the old allocator way more than an order of magnitude in other more common scenarios while staying mostly flat in CPU overhead and completely flat in memory consumption" * 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (27 commits) percpu: update header to contain bitmap allocator explanation. percpu: update pcpu_find_block_fit to use an iterator percpu: use metadata blocks to update the chunk contig hint percpu: update free path to take advantage of contig hints percpu: update alloc path to only scan if contig hints are broken percpu: keep track of the best offset for contig hints percpu: skip chunks if the alloc does not fit in the contig hint percpu: add first_bit to keep track of the first free in the bitmap percpu: introduce bitmap metadata blocks percpu: replace area map allocator with bitmap percpu: generalize bitmap (un)populated iterators percpu: increase minimum percpu allocation size and align first regions percpu: introduce nr_empty_pop_pages to help empty page accounting percpu: change the number of pages marked in the first_chunk pop bitmap percpu: combine percpu address checks percpu: modify base_addr to be region specific percpu: setup_first_chunk rename schunk/dchunk to chunk percpu: end chunk area maps page aligned for the populated bitmap percpu: unify allocation of schunk and dchunk percpu: setup_first_chunk remove dyn_size and consolidate logic ...
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Linus Torvalds authored
Merge updates from Andrew Morton: - various misc bits - DAX updates - OCFS2 - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (119 commits) mm,fork: introduce MADV_WIPEONFORK x86,mpx: make mpx depend on x86-64 to free up VMA flag mm: add /proc/pid/smaps_rollup mm: hugetlb: clear target sub-page last when clearing huge page mm: oom: let oom_reap_task and exit_mmap run concurrently swap: choose swap device according to numa node mm: replace TIF_MEMDIE checks by tsk_is_oom_victim mm, oom: do not rely on TIF_MEMDIE for memory reserves access z3fold: use per-cpu unbuddied lists mm, swap: don't use VMA based swap readahead if HDD is used as swap mm, swap: add sysfs interface for VMA based swap readahead mm, swap: VMA based swap readahead mm, swap: fix swap readahead marking mm, swap: add swap readahead hit statistics mm/vmalloc.c: don't reinvent the wheel but use existing llist API mm/vmstat.c: fix wrong comment selftests/memfd: add memfd_create hugetlbfs selftest mm/shmem: add hugetlbfs support to memfd_create() mm, devm_memremap_pages: use multi-order radix for ZONE_DEVICE lookups mm/vmalloc.c: halve the number of comparisons performed in pcpu_get_vm_areas() ...
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Andy Lutomirski authored
While debugging a problem, I thought that using cr4_set_bits_and_update_boot() to restore CR4.PCIDE would be helpful. It turns out to be counterproductive. Add a comment documenting how this works. Signed-off-by:
Andy Lutomirski <luto@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Andy Lutomirski authored
When Linux brings a CPU down and back up, it switches to init_mm and then loads swapper_pg_dir into CR3. With PCID enabled, this has the side effect of masking off the ASID bits in CR3. This can result in some confusion in the TLB handling code. If we bring a CPU down and back up with any ASID other than 0, we end up with the wrong ASID active on the CPU after resume. This could cause our internal state to become corrupt, although major corruption is unlikely because init_mm doesn't have any user pages. More obviously, if CONFIG_DEBUG_VM=y, we'll trip over an assertion in the next context switch. The result of *that* is a failure to resume from suspend with probability 1 - 1/6^(cpus-1). Fix it by reinitializing cpu_tlbstate on resume and CPU bringup. Reported-by:
Linus Torvalds <torvalds@linux-foundation.org> Reported-by:
Jiri Kosina <jikos@kernel.org> Fixes: 10af6235 ("x86/mm: Implement PCID based optimization: try to preserve old TLB entries using PCID") Signed-off-by:
Andy Lutomirski <luto@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Rik van Riel authored
Introduce MADV_WIPEONFORK semantics, which result in a VMA being empty in the child process after fork. This differs from MADV_DONTFORK in one important way. If a child process accesses memory that was MADV_WIPEONFORK, it will get zeroes. The address ranges are still valid, they are just empty. If a child process accesses memory that was MADV_DONTFORK, it will get a segmentation fault, since those address ranges are no longer valid in the child after fork. Since MADV_DONTFORK also seems to be used to allow very large programs to fork in systems with strict memory overcommit restrictions, changing the semantics of MADV_DONTFORK might break existing programs. MADV_WIPEONFORK only works on private, anonymous VMAs. The use case is libraries that store or cache information, and want to know that they need to regenerate it in the child process after fork. Examples of this would be: - systemd/pulseaudio API checks (fail after fork) (replacing a getpid check, which is too slow without a PID cache) - PKCS#11 API reinitialization check (mandated by specification) - glibc's upcoming PRNG (reseed after fork) - OpenSSL PRNG (reseed after fork) The security benefits of a forking server having a re-inialized PRNG in every child process are pretty obvious. However, due to libraries having all kinds of internal state, and programs getting compiled with many different versions of each library, it is unreasonable to expect calling programs to re-initialize everything manually after fork. A further complication is the proliferation of clone flags, programs bypassing glibc's functions to call clone directly, and programs calling unshare, causing the glibc pthread_atfork hook to not get called. It would be better to have the kernel take care of this automatically. The patch also adds MADV_KEEPONFORK, to undo the effects of a prior MADV_WIPEONFORK. This is similar to the OpenBSD minherit syscall with MAP_INHERIT_ZERO: https://man.openbsd.org/minherit.2 [akpm@linux-foundation.org: numerically order arch/parisc/include/uapi/asm/mman.h #defines] Link: http://lkml.kernel.org/r/20170811212829.29186-3-riel@redhat.com Signed-off-by:
Rik van Riel <riel@redhat.com> Reported-by:
Florian Weimer <fweimer@redhat.com> Reported-by:
Colm MacCártaigh <colm@allcosts.net> Reviewed-by:
Mike Kravetz <mike.kravetz@oracle.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Helge Deller <deller@gmx.de> Cc: Kees Cook <keescook@chromium.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Drewry <wad@chromium.org> Cc: <linux-api@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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