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2017-02-27Merge tag 'ktest-v4.11' of ↵Linus Torvalds1-35/+76
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest Pull ktest updates from Steven Rostedt: "These are various fixes that I have made and never got around to pushing. I've been asked to get the upstream repo back up-to-date" * tag 'ktest-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: Add variable run_command_status to save status of commands executed ktest.pl: Powercycle the box on reboot if no connection can be made ktest: Add timeout to ssh command ktest: Fix child exit code processing ktest: Have POST_TEST run after the test has totally completed
2017-02-27tools/testing/selftests/sigaltstack/sas.c: improve output of sigaltstack ↵Stas Sergeev1-3/+4
testcase Currently it uses %i for bitmasks, which makes it difficult to properly decode the values. Use %x instead. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Stas Sergeev <[email protected]> Cc: Shuah Khan <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Oleg Nesterov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-27Merge airlied/drm-next into drm-misc-nextDaniel Vetter1-26/+27
Backmerge the main pull request to sync up with all the newly landed drivers. Otherwise we'll have chaos even before 4.12 started in earnest. Signed-off-by: Daniel Vetter <[email protected]>
2017-02-25Merge tag 'linux-kselftest-4.11-rc1' of ↵Linus Torvalds56-393/+1300
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest update from Shuah Khan: "This update consists of: - fixes to several existing tests from Stafford Horne - cpufreq tests from Viresh Kumar - Selftest build and install fixes from Bamvor Jian Zhang and Michael Ellerman - Fixes to protection-keys tests from Dave Hansen - Warning fixes from Shuah Khan" * tag 'linux-kselftest-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (28 commits) selftests/powerpc: Fix remaining fallout from recent changes selftests/powerpc: Fix the clean rule since recent changes selftests: Fix the .S and .S -> .o rules selftests: Fix the .c linking rule selftests: Fix selftests build to just build, not run tests selftests, x86, protection_keys: fix wrong offset in siginfo selftests, x86, protection_keys: fix uninitialized variable warning selftest: cpufreq: Update MAINTAINERS file selftest: cpufreq: Add special tests selftest: cpufreq: Add support to test cpufreq modules selftest: cpufreq: Add suspend/resume/hibernate support selftest: cpufreq: Add support for cpufreq tests selftests: Add intel_pstate to TARGETS selftests/intel_pstate: Update makefile to match new style selftests/intel_pstate: Fix warning on loop index overflow cpupower: Restore format of frequency-info limit selftests/futex: Add headers to makefile dependencies selftests/futex: Add stdio used for logging selftests: x86 protection_keys remove dead code selftests: x86 protection_keys fix unused variable compile warnings ...
2017-02-24userfaultfd: non-cooperative: selftest: enable REMOVE event test for shmemMike Rapoport1-4/+2
Now when madvise(MADV_REMOVE) notifies uffd reader, we should verify that appliciation actually sees zeros at the removed range. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Reviewed-by: Andrea Arcangeli <[email protected]> Cc: Hillf Danton <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-24userfaultfd: non-cooperative: rename *EVENT_MADVDONTNEED to *EVENT_REMOVEMike Rapoport1-8/+8
Patch series "userfaultfd: non-cooperative: add madvise() event for MADV_REMOVE request". These patches add notification of madvise(MADV_REMOVE) event to non-cooperative userfaultfd monitor. The first pacth renames EVENT_MADVDONTNEED to EVENT_REMOVE along with relevant functions and structures. Using _REMOVE instead of _MADVDONTNEED describes the event semantics more clearly and I hope it's not too late for such change in the ABI. This patch (of 3): The UFFD_EVENT_MADVDONTNEED purpose is to notify uffd monitor about removal of certain range from address space tracked by userfaultfd. Hence, UFFD_EVENT_REMOVE seems to better reflect the operation semantics. Respectively, 'madv_dn' field of uffd_msg is renamed to 'remove' and the madvise_userfault_dontneed callback is renamed to userfaultfd_remove. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Reviewed-by: Andrea Arcangeli <[email protected]> Acked-by: Hillf Danton <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-23Merge tag 'drm-for-v4.11-less-shouty' of ↵Linus Torvalds2-0/+30
git://people.freedesktop.org/~airlied/linux Pull drm updates from Dave Airlie: "This is the main drm pull request for v4.11. Nothing too major, the tinydrm and mmu-less support should make writing smaller drivers easier for some of the simpler platforms, and there are a bunch of documentation updates. Intel grew displayport MST audio support which is hopefully useful to people, and FBC is on by default for GEN9+ (so people know where to look for regressions). AMDGPU has a lot of fixes that would like new firmware files installed for some GPUs. Other than that it's pretty scattered all over. I may have a follow up pull request as I know BenH has a bunch of AST rework and fixes and I'd like to get those in once they've been tested by AST, and I've got at least one pull request I'm just trying to get the author to fix up. Core: - drm_mm reworked - Connector list locking and iterators - Documentation updates - Format handling rework - MMU-less support for fbdev helpers - drm_crtc_from_index helper - Core CRC API - Remove drm_framebuffer_unregister_private - Debugfs cleanup - EDID/Infoframe fixes - Release callback - Tinydrm support (smaller drivers for simple hw) panel: - Add support for some new simple panels i915: - FBC by default for gen9+ - Shared dpll cleanups and docs - GEN8 powerdomain cleanup - DMC support on GLK - DP MST audio support - HuC loading support - GVT init ordering fixes - GVT IOMMU workaround fix amdgpu/radeon: - Power/clockgating improvements - Preliminary SR-IOV support - TTM buffer priority and eviction fixes - SI DPM quirks removed due to firmware fixes - Powerplay improvements - VCE/UVD powergating fixes - Cleanup SI GFX code to match CI/VI - Support for > 2 displays on 3/5 crtc asics - SI headless fixes nouveau: - Rework securre boot code in prep for GP10x secure boot - Channel recovery improvements - Initial power budget code - MMU rework preperation vmwgfx: - Bunch of fixes and cleanups exynos: - Runtime PM support for MIC driver - Cleanups to use atomic helpers - UHD Support for TM2/TM2E boards - Trigger mode fix for Rinato board etnaviv: - Shader performance fix - Command stream validator fixes - Command buffer suballocator rockchip: - CDN DisplayPort support - IOMMU support for arm64 platform imx-drm: - Fix i.MX5 TV encoder probing - Remove lower fb size limits msm: - Support for HW cursor on MDP5 devices - DSI encoder cleanup - GPU DT bindings cleanup sti: - stih410 cleanups - Create fbdev at binding - HQVDP fixes - Remove stih416 chip functionality - DVI/HDMI mode selection fixes - FPS statistic reporting omapdrm: - IRQ code cleanup dwi-hdmi bridge: - Cleanups and fixes adv-bridge: - Updates for nexus sii8520 bridge: - Add interlace mode support - Rework HDMI and lots of fixes qxl: - probing/teardown cleanups ZTE drm: - HDMI audio via SPDIF interface - Video Layer overlay plane support - Add TV encoder output device atmel-hlcdc: - Rework fbdev creation logic tegra: - OF node fix fsl-dcu: - Minor fixes mali-dp: - Assorted fixes sunxi: - Minor fix" [ This was the "fixed" pull, that still had build warnings due to people not even having build tested the result. I'm not a happy camper I've fixed the things I noticed up in this merge. - Linus ] * tag 'drm-for-v4.11-less-shouty' of git://people.freedesktop.org/~airlied/linux: (1177 commits) lib/Kconfig: make PRIME_NUMBERS not user selectable drm/tinydrm: helpers: Properly fix backlight dependency drm/tinydrm: mipi-dbi: Fix field width specifier warning drm/tinydrm: mipi-dbi: Silence: ‘cmd’ may be used uninitialized drm/sti: fix build warnings in sti_drv.c and sti_vtg.c files drm/amd/powerplay: fix PSI feature on Polars12 drm/amdgpu: refuse to reserve io mem for split VRAM buffers drm/ttm: fix use-after-free races in vm fault handling drm/tinydrm: Add support for Multi-Inno MI0283QT display dt-bindings: Add Multi-Inno MI0283QT binding dt-bindings: display/panel: Add common rotation property of: Add vendor prefix for Multi-Inno drm/tinydrm: Add MIPI DBI support drm/tinydrm: Add helper functions drm: Add DRM support for tiny LCD displays drm/amd/amdgpu: post card if there is real hw resetting performed drm/nouveau/tmr: provide backtrace when a timeout is hit drm/nouveau/pci/g92: Fix rearm drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in the vbios drm/nouveau/hwmon: expose power_max and power_crit ..
2017-02-23Merge tag 'v4.10-rc8' into drm-nextDave Airlie1-26/+27
Linux 4.10-rc8 Backmerge Linus rc8 to fix some conflicts, but also to avoid pulling it in via a fixes pull from someone.
2017-02-22userfaultfd: selftest: test UFFDIO_ZEROPAGE on all memory typesAndrea Arcangeli1-1/+81
This will verify -EINVAL is returned with hugetlbfs/shmem and it'll do a functional test of UFFDIO_ZEROPAGE on anonymous memory. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-22userfaultfd: non-cooperative: selftest: add test for FORK, MADVDONTNEED and ↵Mike Rapoport1-12/+163
REMAP events Add test for userfaultfd events used in non-cooperative scenario when the process that monitors the userfaultfd and handles user faults is not the same process that causes the page faults. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-22userfaultfd: non-cooperative: selftest: add ufd parameter to copy_pageMike Rapoport1-5/+5
With future addition of event tests, copy_page will be called with different userfault file descriptors Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-22userfaultfd: non-cooperative: selftest: introduce userfaultfd_openMike Rapoport1-16/+25
userfaultfd_open will be needed by the non cooperative selftest. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-22userfaultfd: shmem: add userfaultfd_shmem testMike Rapoport3-2/+50
The test verifies that anonymous shared mapping can be used with userfault using the existing testing method. The shared memory area is allocated using mmap(..., MAP_SHARED | MAP_ANONYMOUS, ...) and released using madvise(MADV_REMOVE) Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-22userfaultfd: shmem: allow registration of shared memory rangesMike Rapoport1-1/+1
Expand the userfaultfd_register/unregister routines to allow shared memory VMAs. Currently, there is no UFFDIO_ZEROPAGE and write-protection support for shared memory VMAs, which is reflected in ioctl methods supported by uffdio_register. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-22userfaultfd: hugetlbfs: add userfaultfd_hugetlb testMike Kravetz3-17/+161
Test userfaultfd hugetlb functionality by using the existing testing method (in userfaultfd.c). Instead of an anonymous memeory, a hugetlbfs file is mmap'ed private. In this way fallocate hole punch can be used to release pages. This is because madvise(MADV_DONTNEED) is not supported for huge pages. Use the same file, but create wrappers for allocating ranges and releasing pages. Compile userfaultfd.c with HUGETLB_TEST defined to produce an executable to test userfaultfd hugetlb functionality. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Kravetz <[email protected]> Signed-off-by: Andrea Arcangeli <[email protected]> Cc: "Dr. David Alan Gilbert" <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Michael Rapoport <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-02-22Merge tag 'driver-core-4.11-rc1' of ↵Linus Torvalds1-5/+20
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the "small" driver core patches for 4.11-rc1. Not much here, some firmware documentation and self-test updates, a debugfs code formatting issue, and a new feature for call_usermodehelper to make it more robust on systems that want to lock it down in a more secure way. All of these have been linux-next for a while now with no reported issues" * tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: kernfs: handle null pointers while printing node name and path Introduce STATIC_USERMODEHELPER to mediate call_usermodehelper() Make static usermode helper binaries constant kmod: make usermodehelper path a const string firmware: revamp firmware documentation selftests: firmware: send expected errors to /dev/null selftests: firmware: only modprobe if driver is missing platform: Print the resource range if device failed to claim kref: prefer atomic_inc_not_zero to atomic_add_unless debugfs: improve formatting of debugfs_real_fops()
2017-02-22Merge tag 'char-misc-4.11-rc1' of ↵Linus Torvalds3-100/+225
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver patchset for 4.11-rc1. Lots of different driver subsystems updated here: rework for the hyperv subsystem to handle new platforms better, mei and w1 and extcon driver updates, as well as a number of other "minor" driver updates. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits) goldfish: Sanitize the broken interrupt handler x86/platform/goldfish: Prevent unconditional loading vmbus: replace modulus operation with subtraction vmbus: constify parameters where possible vmbus: expose hv_begin/end_read vmbus: remove conditional locking of vmbus_write vmbus: add direct isr callback mode vmbus: change to per channel tasklet vmbus: put related per-cpu variable together vmbus: callback is in softirq not workqueue binder: Add support for file-descriptor arrays binder: Add support for scatter-gather binder: Add extra size to allocator binder: Refactor binder_transact() binder: Support multiple /dev instances binder: Deal with contexts in debugfs binder: Support multiple context managers binder: Split flat_binder_object auxdisplay: ht16k33: remove private workqueue auxdisplay: ht16k33: rework input device initialization ...
2017-02-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds10-294/+2465
Pull networking updates from David Miller: "Highlights: 1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini Varadhan. 2) Simplify classifier state on sk_buff in order to shrink it a bit. From Willem de Bruijn. 3) Introduce SIPHASH and it's usage for secure sequence numbers and syncookies. From Jason A. Donenfeld. 4) Reduce CPU usage for ICMP replies we are going to limit or suppress, from Jesper Dangaard Brouer. 5) Introduce Shared Memory Communications socket layer, from Ursula Braun. 6) Add RACK loss detection and allow it to actually trigger fast recovery instead of just assisting after other algorithms have triggered it. From Yuchung Cheng. 7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot. 8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert. 9) Export MPLS packet stats via netlink, from Robert Shearman. 10) Significantly improve inet port bind conflict handling, especially when an application is restarted and changes it's setting of reuseport. From Josef Bacik. 11) Implement TX batching in vhost_net, from Jason Wang. 12) Extend the dummy device so that VF (virtual function) features, such as configuration, can be more easily tested. From Phil Sutter. 13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric Dumazet. 14) Add new bpf MAP, implementing a longest prefix match trie. From Daniel Mack. 15) Packet sample offloading support in mlxsw driver, from Yotam Gigi. 16) Add new aquantia driver, from David VomLehn. 17) Add bpf tracepoints, from Daniel Borkmann. 18) Add support for port mirroring to b53 and bcm_sf2 drivers, from Florian Fainelli. 19) Remove custom busy polling in many drivers, it is done in the core networking since 4.5 times. From Eric Dumazet. 20) Support XDP adjust_head in virtio_net, from John Fastabend. 21) Fix several major holes in neighbour entry confirmation, from Julian Anastasov. 22) Add XDP support to bnxt_en driver, from Michael Chan. 23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan. 24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi. 25) Support GRO in IPSEC protocols, from Steffen Klassert" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits) Revert "ath10k: Search SMBIOS for OEM board file extension" net: socket: fix recvmmsg not returning error from sock_error bnxt_en: use eth_hw_addr_random() bpf: fix unlocking of jited image when module ronx not set arch: add ARCH_HAS_SET_MEMORY config net: napi_watchdog() can use napi_schedule_irqoff() tcp: Revert "tcp: tcp_probe: use spin_lock_bh()" net/hsr: use eth_hw_addr_random() net: mvpp2: enable building on 64-bit platforms net: mvpp2: switch to build_skb() in the RX path net: mvpp2: simplify MVPP2_PRS_RI_* definitions net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT net: mvpp2: remove unused register definitions net: mvpp2: simplify mvpp2_bm_bufs_add() net: mvpp2: drop useless fields in mvpp2_bm_pool and related code net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue' net: mvpp2: release reference to txq_cpu[] entry after unmapping net: mvpp2: handle too large value in mvpp2_rx_time_coal_set() net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set() net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set ...
2017-02-20Merge branch 'x86-mm-for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 mm updates from Ingo Molnar: "A laundry list of changes: KASAN improvements/fixes for ptdump, a self-test fix, PAT cleanup and wbinvd() avoidance, removal of stale code and documentation updates" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm/ptdump: Add address marker for KASAN shadow region x86/mm/ptdump: Optimize check for W+X mappings for CONFIG_KASAN=y x86/mm/pat: Use rb_entry() x86/mpx: Re-add MPX to selftests Makefile x86/mm: Remove CONFIG_DEBUG_NX_TEST x86/mm/cpa: Avoid wbinvd() for PREEMPT x86/mm: Improve documentation for low-level device I/O functions
2017-02-20Merge branch 'x86-asm-for-linus' of ↵Linus Torvalds2-1/+196
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 asm update from Ingo Molnar: "This adds a new SYSRET testcase" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/x86: Add a selftest for SYSRET to noncanonical addresses
2017-02-20Merge branch 'locking-core-for-linus' of ↵Linus Torvalds4-0/+18
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: "The main changes in this cycle were: - Implement wraparound-safe refcount_t and kref_t types based on generic atomic primitives (Peter Zijlstra) - Improve and fix the ww_mutex code (Nicolai Hähnle) - Add self-tests to the ww_mutex code (Chris Wilson) - Optimize percpu-rwsems with the 'rcuwait' mechanism (Davidlohr Bueso) - Micro-optimize the current-task logic all around the core kernel (Davidlohr Bueso) - Tidy up after recent optimizations: remove stale code and APIs, clean up the code (Waiman Long) - ... plus misc fixes, updates and cleanups" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits) fork: Fix task_struct alignment locking/spinlock/debug: Remove spinlock lockup detection code lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS lkdtm: Convert to refcount_t testing kref: Implement 'struct kref' using refcount_t refcount_t: Introduce a special purpose refcount type sched/wake_q: Clarify queue reinit comment sched/wait, rcuwait: Fix typo in comment locking/mutex: Fix lockdep_assert_held() fail locking/rtmutex: Flip unlikely() branch to likely() in __rt_mutex_slowlock() locking/rwsem: Reinit wake_q after use locking/rwsem: Remove unnecessary atomic_long_t casts jump_labels: Move header guard #endif down where it belongs locking/atomic, kref: Implement kref_put_lock() locking/ww_mutex: Turn off __must_check for now locking/atomic, kref: Avoid more abuse locking/atomic, kref: Use kref_get_unless_zero() more locking/atomic, kref: Kill kref_sub() locking/atomic, kref: Add kref_read() locking/atomic, kref: Add KREF_INIT() ...
2017-02-18selftest for default_file_splice_read() infoleakAl Viro4-0/+24
bug fixed in commit b9dc6f65bc5e ("fix a fencepost error in pipe_advance()") Signed-off-by: Al Viro <[email protected]>
2017-02-15bpf: Rebuild bpf.o for any dependency updateMickaël Salaün1-2/+13
This is needed to force a rebuild of bpf.o when one of its dependencies (e.g. uapi/linux/bpf.h) is updated. Add a phony target. Signed-off-by: Mickaël Salaün <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: David S. Miller <[email protected]> Cc: Wang Nan <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-02-14selftests/powerpc: Fix remaining fallout from recent changesMichael Ellerman4-12/+13
In benchmarks we need to use $(TEST_GEN_PROGS) after we include lib.mk, because lib.mk does the substitution to add $(OUTPUT). In math the vmx and fpu names were typoed so they no longer matched correctly, put back the 'v' and 'f'. In tm we need to substitute $(OUTPUT) into SIGNAL_CONTEXT_CHK_TESTS so that the rule matches. In pmu there is an extraneous ':' on the end of $$BUILD_TARGET for the clean and install rules, which breaks the logic in the child Makefiles. Fixes: a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT") Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-02-14selftests/powerpc: Fix the clean rule since recent changesMichael Ellerman1-1/+2
The clean rule is broken for the powerpc tests: make[1]: Entering directory 'tools/testing/selftests/powerpc' Makefile:63: warning: overriding recipe for target 'clean' ../lib.mk:51: warning: ignoring old recipe for target 'clean' /bin/sh: 3: Syntax error: end of file unexpected (expecting "done") Makefile:63: recipe for target 'clean' failed Fixes: a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT") Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-02-14selftests: Fix the .S and .S -> .o rulesMichael Ellerman1-2/+2
Both these rules incorrectly use $< (first prerequisite) rather than $^ (all prerequisites), meaning they don't work if we're using more than one .S file as input. Switch them to using $^. They also don't include $(CPPFLAGS) and other variables used in the default rules, which breaks targets that require those. Fix that by using the builtin $(COMPILE.S) and $(LINK.S) rules. Fixes: a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT") Signed-off-by: Michael Ellerman <[email protected]> Tested by: Bamvor Jian Zhang <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-02-14selftests: Fix the .c linking ruleMichael Ellerman1-1/+1
Currently we can't build some tests, for example: $ make -C tools/testing/selftests/ TARGETS=vm ... gcc -Wall -I ../../../../usr/include -lrt -lpthread ../../../../usr/include/linux/kernel.h userfaultfd.c -o tools/testing/selftests/vm/userfaultfd /tmp/ccmOkQSM.o: In function `stress': userfaultfd.c:(.text+0xc60): undefined reference to `pthread_create' userfaultfd.c:(.text+0xca5): undefined reference to `pthread_create' userfaultfd.c:(.text+0xcee): undefined reference to `pthread_create' userfaultfd.c:(.text+0xd30): undefined reference to `pthread_create' userfaultfd.c:(.text+0xd77): undefined reference to `pthread_join' userfaultfd.c:(.text+0xe7d): undefined reference to `pthread_join' userfaultfd.c:(.text+0xe9f): undefined reference to `pthread_cancel' userfaultfd.c:(.text+0xec6): undefined reference to `pthread_join' userfaultfd.c:(.text+0xf14): undefined reference to `pthread_join' /tmp/ccmOkQSM.o: In function `userfaultfd_stress': userfaultfd.c:(.text+0x13e2): undefined reference to `pthread_attr_setstacksize' collect2: error: ld returned 1 exit status This is because the rule for linking .c files to binaries is incorrect. The first bug is that it uses $< (first prerequisite) instead of $^ (all preqrequisites), fix it by using ^$. Secondly the ordering of the prerequisites vs $(LDLIBS) is wrong, meaning on toolchains that use --as-needed we fail to link (as above). Fix that by placing $(LDLIBS) *after* ^$. Finally switch to using the default rule $(LINK.c), so that we get $(CPPFLAGS) etc. included. Fixes: a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT") Signed-off-by: Michael Ellerman <[email protected]> Tested by: Bamvor Jian Zhang <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-02-14selftests: Fix selftests build to just build, not run testsMichael Ellerman1-5/+5
In commit 88baa78d1f31 ("selftests: remove duplicated all and clean target"), the "all" target was removed from individual Makefiles and added to lib.mk. However the "all" target was added to lib.mk *after* the existing "runtests" target. This means "runtests" becomes the first (default) target for most of our Makefiles. This has the effect of causing a plain "make" to build *and run* the tests. Which is at best rude, but depending on which tests are run could oops someone's build machine. $ make -C tools/testing/selftests/ ... make[1]: Entering directory 'tools/testing/selftests/bpf' gcc -Wall -O2 -I../../../../usr/include test_verifier.c -o tools/testing/selftests/bpf/test_verifier gcc -Wall -O2 -I../../../../usr/include test_maps.c -o tools/testing/selftests/bpf/test_maps gcc -Wall -O2 -I../../../../usr/include test_lru_map.c -o tools/testing/selftests/bpf/test_lru_map #0 add+sub+mul FAIL Failed to load prog 'Function not implemented'! #1 unreachable FAIL Unexpected error message! #2 unreachable2 FAIL ... Fix it by moving the "all" target to the start of lib.mk, making it the default target. Fixes: 88baa78d1f31 ("selftests: remove duplicated all and clean target") Signed-off-by: Michael Ellerman <[email protected]> Tested by: Bamvor Jian Zhang <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-02-13radix tree test suite: Add config option for map shiftRehas Sachdeva4-11/+16
Add config option "SHIFT=<value>" to Makefile for building test suite with any value of RADIX_TREE_MAP_SHIFT between 3 and 7 inclusive. Signed-off-by: Rehas Sachdeva <[email protected]> [[email protected]: .gitignore, quieten grep, remove on clean] Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13radix tree test suite: Run iteration tests for longerMatthew Wilcox1-2/+2
If the -l flag is set, run the tests for 100 seconds each instead of the normal 10 seconds. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix tree test suite: Fix split/join memory leaksMatthew Wilcox1-1/+14
The last of the memory leaks in the test suite was a couple of places in the split/join testing where I forgot to free the element being removed from the tree. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix tree test suite: Fix leaks in regression2.cMatthew Wilcox1-2/+4
None of the malloc'ed data structures were ever being freed. Found with -fsanitize=address. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix tree test suite: Fix leaky testsMatthew Wilcox1-12/+16
If item_insert() or item_insert_order() failed to insert an item, they would leak the item they had just created. This was causing runaway memory consumption while running the iteration_check testcase, which proves that Ross has too much memory in his workstation ;-) Make sure to free the item on error. Found with -fsanitize=address. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix tree test suite: Enable address sanitizerMatthew Wilcox1-1/+1
I was looking for a memory scribble and instead found a pile of memory leaks. Ensure no more occur in future. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix-tree: Chain preallocated nodes through ->parentMatthew Wilcox1-3/+3
Chaining through the ->private_data member means we have to zero ->private_data after removing preallocated nodes from the list. We're about to initialise ->parent anyway, so we can avoid zeroing it. Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13radix tree test suite: Dial down verbosity with -vRehas Sachdeva10-58/+77
Make the output of radix tree test suite less verbose by default and add -v and -vv command line options for increasing level of verbosity. Signed-off-by: Rehas Sachdeva <[email protected]> Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13radix tree test suite: Introduce kmalloc_verboseMatthew Wilcox2-0/+26
To help track down where memory leaks may be, add the ability to turn on/off printing allocations, frees and delayed frees. Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13radix tree test suite: Build separate binaries for some testsMatthew Wilcox4-7/+33
To allow developers to run a subset of tests, build separate multiorder and idr-test binaries which will run just the tests in those files. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13ida: Use exceptional entries for small IDAsMatthew Wilcox1-1/+92
We can use the root entry as a bitmap and save allocating a 128 byte bitmap for an IDA that contains only a few entries (30 on a 32-bit machine, 62 on a 64-bit machine). This costs about 300 bytes of kernel text on x86-64, so as long as 3 IDAs fall into this category, this is a net win for memory consumption. Thanks to Rasmus Villemoes for his work documenting the problem and collecting statistics on IDAs. Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13ida: Move ida_bitmap to a percpu variableMatthew Wilcox2-3/+4
When we preload the IDA, we allocate an IDA bitmap. Instead of storing that preallocated bitmap in the IDA, we store it in a percpu variable. Generally there are more IDAs in the system than CPUs, so this cuts down on the number of preallocated bitmaps that are unused, and about half of the IDA users did not call ida_destroy() so they were leaking IDA bitmaps. Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13Reimplement IDR and IDA using the radix treeMatthew Wilcox8-6/+365
The IDR is very similar to the radix tree. It has some functionality that the radix tree did not have (alloc next free, cyclic allocation, a callback-based for_each, destroy tree), which is readily implementable on top of the radix tree. A few small changes were needed in order to use a tag to represent nodes with free space below them. More extensive changes were needed to support storing NULL as a valid entry in an IDR. Plain radix trees still interpret NULL as a not-present entry. The IDA is reimplemented as a client of the newly enhanced radix tree. As in the current implementation, it uses a bitmap at the last level of the tree. Signed-off-by: Matthew Wilcox <[email protected]> Signed-off-by: Matthew Wilcox <[email protected]> Tested-by: Kirill A. Shutemov <[email protected]> Cc: Konstantin Khlebnikov <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Tejun Heo <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2017-02-13radix tree test suite: Remove obsolete CONFIGMatthew Wilcox1-2/+0
radix-tree.c doesn't use these CONFIG options any more. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix tree test suite: Use vpath to find lib filesMatthew Wilcox1-3/+2
Instead of specifying how to build find_bit.o from lib/find_bit.o, use vpath to tell make where to find find_bit.c. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix tree test suite: Reduce kernel.hMatthew Wilcox3-39/+12
Many of the definitions in the radix-tree kernel.h are redundant with others in tools/include, or are no longer used, such as panic(). Move the definition of __init to init.h and in_interrupt() to preempt.h Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13radix tree test suite: Remove export.hMatthew Wilcox1-2/+0
The tools/include export.h contains everything we need. Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13radix tree test suite: Remove types.hMatthew Wilcox3-23/+3
Move the pieces we still need to tools/include and update a few implicit includes. Signed-off-by: Matthew Wilcox <[email protected]>
2017-02-13radix tree test suite: Remove mempoolMatthew Wilcox2-38/+0
The radix tree hasn't used a mempool since the beginning of git history. Remove the userspace mempool implementation. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13radix tree test suite: Depend on tools/include/asm filesMatthew Wilcox1-0/+1
Changing tools/include/asm/bug.h showed a missing dependency in the Makefile. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Rehas Sachdeva <[email protected]>
2017-02-13drm/i915: Provide a hook for selftestsChris Wilson1-0/+1
Some pieces of code are independent of hardware but are very tricky to exercise through the normal userspace ABI or via debugfs hooks. Being able to create mock unit tests and execute them through CI is vital. Start by adding a central point where we can execute unit tests and a parameter to enable them. This is disabled by default as the expectation is that these tests will occasionally explode. To facilitate integration with igt, any parameter beginning with i915.igt__ is interpreted as a subtest executable independently via igt/drv_selftest. Two classes of selftests are recognised: mock unit tests and integration tests. Mock unit tests are run as soon as the module is loaded, before the device is probed. At that point there is no driver instantiated and all hw interactions must be "mocked". This is very useful for writing universal tests to exercise code not typically run on a broad range of architectures. Alternatively, you can hook into the live selftests and run when the device has been instantiated - hw interactions are real. v2: Add a macro for compiling conditional code for mock objects inside real objects. v3: Differentiate between mock unit tests and late integration test. v4: List the tests in natural order, use igt to sort after modparam. v5: s/late/live/ v6: s/unsigned long/unsigned int/ v7: Use igt_ prefixes for long helpers. v8: Deobfuscate macros overriding functions, stop using -I$(src) Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Tvrtko Ursulin <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2017-02-10bpf: Add test_tag to .gitignoreMickaël Salaün1-0/+1
Signed-off-by: Mickaël Salaün <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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