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2019-03-16Merge tag 'pidfd-v5.1-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull pidfd system call from Christian Brauner: "This introduces the ability to use file descriptors from /proc/<pid>/ as stable handles on struct pid. Even if a pid is recycled the handle will not change. For a start these fds can be used to send signals to the processes they refer to. With the ability to use /proc/<pid> fds as stable handles on struct pid we can fix a long-standing issue where after a process has exited its pid can be reused by another process. If a caller sends a signal to a reused pid it will end up signaling the wrong process. With this patchset we enable a variety of use cases. One obvious example is that we can now safely delegate an important part of process management - sending signals - to processes other than the parent of a given process by sending file descriptors around via scm rights and not fearing that the given process will have been recycled in the meantime. It also allows for easy testing whether a given process is still alive or not by sending signal 0 to a pidfd which is quite handy. There has been some interest in this feature e.g. from systems management (systemd, glibc) and container managers. I have requested and gotten comments from glibc to make sure that this syscall is suitable for their needs as well. In the future I expect it to take on most other pid-based signal syscalls. But such features are left for the future once they are needed. This has been sitting in linux-next for quite a while and has not caused any issues. It comes with selftests which verify basic functionality and also test that a recycled pid cannot be signaled via a pidfd. Jon has written about a prior version of this patchset. It should cover the basic functionality since not a lot has changed since then: https://lwn.net/Articles/773459/ The commit message for the syscall itself is extensively documenting the syscall, including it's functionality and extensibility" * tag 'pidfd-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: selftests: add tests for pidfd_send_signal() signal: add pidfd_send_signal() syscall
2019-03-16Merge tag 'devdax-for-5.1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull device-dax updates from Dan Williams: "New device-dax infrastructure to allow persistent memory and other "reserved" / performance differentiated memories, to be assigned to the core-mm as "System RAM". Some users want to use persistent memory as additional volatile memory. They are willing to cope with potential performance differences, for example between DRAM and 3D Xpoint, and want to use typical Linux memory management apis rather than a userspace memory allocator layered over an mmap() of a dax file. The administration model is to decide how much Persistent Memory (pmem) to use as System RAM, create a device-dax-mode namespace of that size, and then assign it to the core-mm. The rationale for device-dax is that it is a generic memory-mapping driver that can be layered over any "special purpose" memory, not just pmem. On subsequent boots udev rules can be used to restore the memory assignment. One implication of using pmem as RAM is that mlock() no longer keeps data off persistent media. For this reason it is recommended to enable NVDIMM Security (previously merged for 5.0) to encrypt pmem contents at rest. We considered making this recommendation an actively enforced requirement, but in the end decided to leave it as a distribution / administrator policy to allow for emulation and test environments that lack security capable NVDIMMs. Summary: - Replace the /sys/class/dax device model with /sys/bus/dax, and include a compat driver so distributions can opt-in to the new ABI. - Allow for an alternative driver for the device-dax address-range - Introduce the 'kmem' driver to hotplug / assign a device-dax address-range to the core-mm. - Arrange for the device-dax target-node to be onlined so that the newly added memory range can be uniquely referenced by numa apis" NOTE! I'm not entirely happy with the whole "PMEM as RAM" model because we currently have special - and very annoying rules in the kernel about accessing PMEM only with the "MC safe" accessors, because machine checks inside the regular repeat string copy functions can be fatal in some (not described) circumstances. And apparently the PMEM modules can cause that a lot more than regular RAM. The argument is that this happens because PMEM doesn't necessarily get scrubbed at boot like RAM does, but that is planned to be added for the user space tooling. Quoting Dan from another email: "The exposure can be reduced in the volatile-RAM case by scanning for and clearing errors before it is onlined as RAM. The userspace tooling for that can be in place before v5.1-final. There's also runtime notifications of errors via acpi_nfit_uc_error_notify() from background scrubbers on the DIMM devices. With that mechanism the kernel could proactively clear newly discovered poison in the volatile case, but that would be additional development more suitable for v5.2. I understand the concern, and the need to highlight this issue by tapping the brakes on feature development, but I don't see PMEM as RAM making the situation worse when the exposure is also there via DAX in the PMEM case. Volatile-RAM is arguably a safer use case since it's possible to repair pages where the persistent case needs active application coordination" * tag 'devdax-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: device-dax: "Hotplug" persistent memory for use like normal RAM mm/resource: Let walk_system_ram_range() search child resources mm/memory-hotplug: Allow memory resources to be children mm/resource: Move HMM pr_debug() deeper into resource code mm/resource: Return real error codes from walk failures device-dax: Add a 'modalias' attribute to DAX 'bus' devices device-dax: Add a 'target_node' attribute device-dax: Auto-bind device after successful new_id acpi/nfit, device-dax: Identify differentiated memory with a unique numa-node device-dax: Add /sys/class/dax backwards compatibility device-dax: Add support for a dax override driver device-dax: Move resource pinning+mapping into the common driver device-dax: Introduce bus + driver model device-dax: Start defining a dax bus model device-dax: Remove multi-resource infrastructure device-dax: Kill dax_region base device-dax: Kill dax_region ida
2019-03-15Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM updates from Paolo Bonzini: "ARM: - some cleanups - direct physical timer assignment - cache sanitization for 32-bit guests s390: - interrupt cleanup - introduction of the Guest Information Block - preparation for processor subfunctions in cpu models PPC: - bug fixes and improvements, especially related to machine checks and protection keys x86: - many, many cleanups, including removing a bunch of MMU code for unnecessary optimizations - AVIC fixes Generic: - memcg accounting" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (147 commits) kvm: vmx: fix formatting of a comment KVM: doc: Document the life cycle of a VM and its resources MAINTAINERS: Add KVM selftests to existing KVM entry Revert "KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range()" KVM: PPC: Book3S: Add count cache flush parameters to kvmppc_get_cpu_char() KVM: PPC: Fix compilation when KVM is not enabled KVM: Minor cleanups for kvm_main.c KVM: s390: add debug logging for cpu model subfunctions KVM: s390: implement subfunction processor calls arm64: KVM: Fix architecturally invalid reset value for FPEXC32_EL2 KVM: arm/arm64: Remove unused timer variable KVM: PPC: Book3S: Improve KVM reference counting KVM: PPC: Book3S HV: Fix build failure without IOMMU support Revert "KVM: Eliminate extra function calls in kvm_get_dirty_log_protect()" x86: kvmguest: use TSC clocksource if invariant TSC is exposed KVM: Never start grow vCPU halt_poll_ns from value below halt_poll_ns_grow_start KVM: Expose the initial start value in grow_halt_poll_ns() as a module parameter KVM: grow_halt_poll_ns() should never shrink vCPU halt_poll_ns KVM: x86/mmu: Consolidate kvm_mmu_zap_all() and kvm_mmu_zap_mmio_sptes() KVM: x86/mmu: WARN if zapping a MMIO spte results in zapping children ...
2019-03-14Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc patches from Andrew Morton: - a little bit more MM - a few fixups [ The "little bit more MM" is actually just one of the three patches Andrew sent for mm/filemap.c, I'm still mulling over two more of them from Josef Bacik - Linus ] * emailed patches from Andrew Morton <akpm@linux-foundation.org>: include/linux/swap.h: use offsetof() instead of custom __swapoffset macro tools/testing/selftests/proc/proc-pid-vm.c: test with vsyscall in mind zram: default to lzo-rle instead of lzo filemap: pass vm_fault to the mmap ra helpers
2019-03-14tools/testing/selftests/proc/proc-pid-vm.c: test with vsyscall in mindAlexey Dobriyan
: selftests: proc: proc-pid-vm : ======================================== : proc-pid-vm: proc-pid-vm.c:277: main: Assertion `rv == strlen(buf0)' failed. : Aborted Because the vsyscall mapping is enabled. Read from vsyscall page to tell if vsyscall is being used. Link: http://lkml.kernel.org/r/20190307183204.GA11405@avx2 Link: http://lkml.kernel.org/r/20190219094722.GB28258@shao2-debian Fixes: 34aab6bec23e7e9 ("proc: test /proc/*/maps, smaps, smaps_rollup, statm") Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reported-by: kernel test robot <rong.a.chen@intel.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-14Merge tag 'pm-5.1-rc1-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "These are mostly fixes and cleanups on top of the previously merged power management material for 5.1-rc1 with one cpupower utility update that wasn't pushed earlier due to unfortunate timing. Specifics: - Fix registration of new cpuidle governors partially broken during the 5.0 development cycle by mistake (Rafael Wysocki). - Avoid integer overflows in the menu cpuidle governor by making it discard the overflowing data points upfront (Rafael Wysocki). - Fix minor mistake in the recent update of the iowait boost computation in the intel_pstate driver (Rafael Wysocki). - Drop incorrect __init annotation from one function in the pxa2xx cpufreq driver (Arnd Bergmann). - Fix the operating performance points (OPP) framework initialization for devices in multiple power domains if only one of them is scalable (Rajendra Nayak). - Fix mistake in dev_pm_opp_set_rate() which causes it to skip updating the performance state if the new frequency is the same as the old one (Viresh Kumar). - Rework the cancellation of wakeup source timers to avoid potential issues with it and do some cleanups unlocked by that change (Viresh Kumar, Rafael Wysocki). - Clean up the code computing the active/suspended time of devices in the PM-runtime framework after recent changes (Ulf Hansson). - Make the power management infrastructure code use pr_fmt() consistently (Joe Perches). - Clean up the generic power domains (genpd) framework somewhat (Aisheng Dong). - Improve kerneldoc comments for two functions in the cpufreq core (Rafael Wysocki). - Fix typo in a PM QoS file description comment (Aisheng Dong). - Update the handling of CPU boost frequencies in the cpupower utility (Abhishek Goel)" * tag 'pm-5.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpuidle: governor: Add new governors to cpuidle_governors again cpufreq: intel_pstate: Fix up iowait_boost computation PM / OPP: Update performance state when freq == old_freq PM / wakeup: Drop wakeup_source_drop() PM / wakeup: Rework wakeup source timer cancellation PM / domains: Remove one unnecessary blank line PM / Domains: Return early for all errors in _genpd_power_off() PM / Domains: Improve warn for multiple states but no governor OPP: Fix handling of multiple power domains PM / QoS: Fix typo in file description cpufreq: pxa2xx: remove incorrect __init annotation PM-runtime: Call pm_runtime_active|suspended_time() from sysfs PM-runtime: Consolidate code to get active/suspended time PM: Add and use pr_fmt() cpufreq: Improve kerneldoc comments for cpufreq_cpu_get/put() cpuidle: menu: Avoid overflows when computing variance tools/power/cpupower: Display boost frequency separately
2019-03-14Merge branches 'pm-opp' and 'pm-tools'Rafael J. Wysocki
* pm-opp: PM / OPP: Update performance state when freq == old_freq OPP: Fix handling of multiple power domains * pm-tools: tools/power/cpupower: Display boost frequency separately
2019-03-12Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc updates from Andrew Morton: - a few misc things - the rest of MM - remove flex_arrays, replace with new simple radix-tree implementation * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (38 commits) Drop flex_arrays sctp: convert to genradix proc: commit to genradix generic radix trees selinux: convert to kvmalloc md: convert to kvmalloc openvswitch: convert to kvmalloc of: fix kmemleak crash caused by imbalance in early memory reservation mm: memblock: update comments and kernel-doc memblock: split checks whether a region should be skipped to a helper function memblock: remove memblock_{set,clear}_region_flags memblock: drop memblock_alloc_*_nopanic() variants memblock: memblock_alloc_try_nid: don't panic treewide: add checks for the return value of memblock_alloc*() swiotlb: add checks for the return value of memblock_alloc*() init/main: add checks for the return value of memblock_alloc*() mm/percpu: add checks for the return value of memblock_alloc*() sparc: add checks for the return value of memblock_alloc*() ia64: add checks for the return value of memblock_alloc*() arch: don't memset(0) memory returned by memblock_alloc() ...
2019-03-12Drop flex_arraysKent Overstreet
All existing users have been converted to generic radix trees Link: http://lkml.kernel.org/r/20181217131929.11727-8-kent.overstreet@gmail.com Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@parisplace.org> Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Paul Moore <paul@paul-moore.com> Cc: Pravin B Shelar <pshelar@ovn.org> Cc: Shaohua Li <shli@kernel.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-12tools/testing/selftests/sysctl/sysctl.sh: add tests for >32-bit values ↵Zev Weiss
written to 32-bit integers Patch series "sysctl: fix range-checking in do_proc_dointvec_minmax_conv()", v2. After being left with an unusable system after a typo executing something like 'echo $((1<<24)) > /proc/sys/vm/max_map_count', I found that do_proc_dointvec_minmax_conv() was missing a check to ensure that the converted value actually fits in an int. The first of the following patches enhances the sysctl selftest such that it detects this problem; the second provides a minimal fix (suitable for -stable) such that the selftest passes. The third patch then performs a more thorough refactoring to eliminate the code duplication that led to the bug in the first place (maintaining the passing status of the selftest). This patch (of 3): At present this exposes a bug in do_proc_dointvec_minmax_conv() (it fails to check for values that are too wide to fit in an int). Link: http://lkml.kernel.org/r/20190207123426.9202-2-zev@bewilderbeest.net Signed-off-by: Zev Weiss <zev@bewilderbeest.net> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Iurii Zaikin <yzaikin@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-11Merge tag 'trace-v5.1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "The biggest change for this release is in the histogram code: - Add "onchange(var)" histogram handler that executes a action when $var changes. - Add new "snapshot()" action for histogram handlers, that causes a snapshot of the ring buffer when triggered. ie. onchange(var).snapshot() will trigger a snapshot if var changes. - Add alternative for "trace()" action. Currently, to trigger a synthetic event, the name of that event is used as the handler name, which is inconsistent with the other actions. onchange(var).synthetic(param) where it can now be onchange(var).trace(synthetic, param). The older method will still be allowed, as long as the synthetic events do not overlap with other handler names. - The histogram documentation at testcases were updated for the new changes. Outside of the histogram code, we have: - Added a quicker way to enable set_ftrace_filter files, that will make it much quicker to bisect tracing a function that shouldn't be traced and crashes the kernel. (You can echo in numbers to set_ftrace_filter, and it will select the corresponding function that is in available_filter_functions). - Some better displaying of the tracing data (and more information was added). The rest are small fixes and more clean ups to the code" * tag 'trace-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (37 commits) tracing: Use strncpy instead of memcpy when copying comm in trace.c tracing: Use strncpy instead of memcpy when copying comm for hist triggers tracing: Use strncpy instead of memcpy for string keys in hist triggers tracing: Use str_has_prefix() in synth_event_create() x86/ftrace: Fix warning and considate ftrace_jmp_replace() and ftrace_call_replace() tracing/perf: Use strndup_user() instead of buggy open-coded version doc: trace: Fix documentation for uprobe_profile tracing: Fix spelling mistake: "analagous" -> "analogous" tracing: Comment why cond_snapshot is checked outside of max_lock protection tracing: Add hist trigger action 'expected fail' test case tracing: Add alternative synthetic event trace action test case tracing: Add hist trigger onchange() handler test case tracing: Add hist trigger snapshot() action test case tracing: Add SPDX license GPL-2.0 license identifier to inter-event testcases tracing: Add alternative synthetic event trace action syntax tracing: Add hist trigger onchange() handler Documentation tracing: Add hist trigger onchange() handler tracing: Add hist trigger snapshot() action Documentation tracing: Add hist trigger snapshot() action tracing: Add conditional snapshot ...
2019-03-11tools: mark 'test_vmalloc.sh' executableLinus Torvalds
Several of these scripts have come in as old-fashioned patches, and in the process lost the executable bit. In most cases it doesn't matter, since the test infrastructure will explicitly execute them using the proper shell interpreter, but at least in the case of the new vmalloc test, the lack of execurable bit caused the test to fail with ./run_vmtests: line 217: ./test_vmalloc.sh: Permission denied because of the lacking exectuable permissions bit. This patch fixes that up. NOTE! A simple script to look for non-executable scripts in the kernel, something like git ls-files --stage -- '*.sh' | grep 100644 | cut -f2 | xargs grep -l '#!' will show that there's a lot of other files that _look_ like executable shell scripts, but don't have the executable bit set. I considered just scripting them all to be executable, but since it looks like the common pattern is to not really require it, I'm just doing the minimal fix as pointed out by the kernel test robot. Fixes: a05ef00c9790 ("selftests/vm: add script helper for CONFIG_TEST_VMALLOC_MODULE") Reported-by: kernel test robot <rong.a.chen@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: "First batch of fixes in the new merge window: 1) Double dst_cache free in act_tunnel_key, from Wenxu. 2) Avoid NULL deref in IN_DEV_MFORWARD() by failing early in the ip_route_input_rcu() path, from Paolo Abeni. 3) Fix appletalk compile regression, from Arnd Bergmann. 4) If SLAB objects reach the TCP sendpage method we are in serious trouble, so put a debugging check there. From Vasily Averin. 5) Memory leak in hsr layer, from Mao Wenan. 6) Only test GSO type on GSO packets, from Willem de Bruijn. 7) Fix crash in xsk_diag_put_umem(), from Eric Dumazet. 8) Fix VNIC mailbox length in nfp, from Dirk van der Merwe. 9) Fix race in ipv4 route exception handling, from Xin Long. 10) Missing DMA memory barrier in hns3 driver, from Jian Shen. 11) Use after free in __tcf_chain_put(), from Vlad Buslov. 12) Handle inet_csk_reqsk_queue_add() failures, from Guillaume Nault. 13) Return value correction when ip_mc_may_pull() fails, from Eric Dumazet. 14) Use after free in x25_device_event(), also from Eric" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (72 commits) gro_cells: make sure device is up in gro_cells_receive() vxlan: test dev->flags & IFF_UP before calling gro_cells_receive() net/x25: fix use-after-free in x25_device_event() isdn: mISDNinfineon: fix potential NULL pointer dereference net: hns3: fix to stop multiple HNS reset due to the AER changes ip: fix ip_mc_may_pull() return value net: keep refcount warning in reqsk_free() net: stmmac: Avoid one more sometimes uninitialized Clang warning net: dsa: mv88e6xxx: Set correct interface mode for CPU/DSA ports rxrpc: Fix client call queueing, waiting for channel tcp: handle inet_csk_reqsk_queue_add() failures net: ethernet: sun: Zero initialize class in default case in niu_add_ethtool_tcam_entry 8139too : Add support for U.S. Robotics USR997901A 10/100 Cardbus NIC fou, fou6: avoid uninit-value in gue_err() and gue6_err() net: sched: fix potential use-after-free in __tcf_chain_put() vhost: silence an unused-variable warning vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock connector: fix unsafe usage of ->real_parent vxlan: do not need BH again in vxlan_cleanup() net: hns3: add dma_rmb() for rx description ...
2019-03-10Merge branch 'next-tpm' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull tpm updates from James Morris: - Clean up the transmission flow Cleaned up the whole transmission flow. Locking of the chip is now done in the level of tpm_try_get_ops() and tpm_put_ops() instead taking the chip lock inside tpm_transmit(). The nested calls inside tpm_transmit(), used with the resource manager, have been refactored out. Should make easier to perform more complex transactions with the TPM without making the subsystem a bigger mess (e.g. encrypted channel patches by James Bottomley). - PPI 1.3 support TPM PPI 1.3 introduces an additional optional command parameter that may be needed for some commands. Display the parameter if the command requires such a parameter. Only command 23 (SetPCRBanks) needs one. The PPI request file will show output like this then: # echo "23 16" > request # cat request 23 16 # echo "5" > request # cat request 5 - Extend all PCR banks in IMA Instead of static PCR banks array, the array of available PCR banks is now allocated dynamically. The digests sizes are determined dynamically using a probe PCR read without relying crypto's static list of hash algorithms. This should finally make sealing of measurements in IMA safe and secure. - TPM 2.0 selftests Added a test suite to tools/testing/selftests/tpm2 previously outside of the kernel tree: https://github.com/jsakkine-intel/tpm2-scripts * 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (37 commits) tpm/ppi: Enable submission of optional command parameter for PPI 1.3 tpm/ppi: Possibly show command parameter if TPM PPI 1.3 is used tpm/ppi: Display up to 101 operations as define for version 1.3 tpm/ppi: rename TPM_PPI_REVISION_ID to TPM_PPI_REVISION_ID_1 tpm/ppi: pass function revision ID to tpm_eval_dsm() tpm: pass an array of tpm_extend_digest structures to tpm_pcr_extend() KEYS: trusted: explicitly use tpm_chip structure from tpm_default_chip() tpm: move tpm_chip definition to include/linux/tpm.h tpm: retrieve digest size of unknown algorithms with PCR read tpm: rename and export tpm2_digest and tpm2_algorithms tpm: dynamically allocate the allocated_banks array tpm: remove @flags from tpm_transmit() tpm: take TPM chip power gating out of tpm_transmit() tpm: introduce tpm_chip_start() and tpm_chip_stop() tpm: remove TPM_TRANSMIT_UNLOCKED flag tpm: use tpm_try_get_ops() in tpm-sysfs.c. tpm: remove @space from tpm_transmit() tpm: move TPM space code out of tpm_transmit() tpm: move tpm_validate_commmand() to tpm2-space.c tpm: clean up tpm_try_transmit() error handling flow ...
2019-03-10Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Thomas Gleixner: "Perf updates and fixes: Kernel: - Handle events which have the bpf_event attribute set as side band events as they carry information about BPF programs. - Add missing switch-case fall-through comments Libraries: - Fix leaks and double frees in error code paths. - Prevent buffer overflows in libtraceevent Tools: - Improvements in handling Intel BT/PTS - Add BTF ELF markers to perf trace BPF programs to improve output - Support --time, --cpu, --pid and --tid filters for perf diff - Calculate the column width in perf annotate as the hardcoded 6 characters for the instruction are not sufficient - Small fixes all over the place" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits) perf/core: Mark expected switch fall-through perf/x86/intel/uncore: Fix client IMC events return huge result perf/ring_buffer: Use high order allocations for AUX buffers optimistically perf data: Force perf_data__open|close zero data->file.path perf session: Fix double free in perf_data__close perf evsel: Probe for precise_ip with simple attr perf tools: Read and store caps/max_precise in perf_pmu perf hist: Fix memory leak of srcline perf hist: Add error path into hist_entry__init perf c2c: Fix c2c report for empty numa node perf script python: Add Python3 support to intel-pt-events.py perf script python: Add Python3 support to event_analyzing_sample.py perf script python: add Python3 support to check-perf-trace.py perf script python: Add Python3 support to futex-contention.py perf script python: Remove mixed indentation perf diff: Support --pid/--tid filter options perf diff: Support --cpu filter option perf diff: Support --time filter option perf thread: Generalize function to copy from thread addr space from intel-bts code perf annotate: Calculate the max instruction name, align column to that ...
2019-03-09Merge tag 'media/v5.1-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - remove sensor drivers that got converted from soc_camera - remaining soc_camera drivers got moved to staging - some documentation cleanups and improvements - the imx staging driver now supports imx7 - the ov9640, mt9m001 and mt9m111 got converted from soc_camera - the vim2m driver now does what a m2m convert driver expects to do - epoll() fixes on media subsystems - several drivers fixes, typos, cleanups and improvements * tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (346 commits) media: dvb/earth-pt1: fix wrong initialization for demod blocks media: vim2m: Address some coding style issues media: vim2m: don't use BUG() media: vim2m: speedup passthrough copy media: vim2m: add an horizontal scaler media: vim2m: don't accept YUYV anymore as output format media: vim2m: add vertical linear scaler media: vim2m: better handle cap/out buffers with different sizes media: vim2m: use different framesizes for bayer formats media: vim2m: add support for VIDIOC_ENUM_FRAMESIZES media: vim2m: ensure that width is multiple of two media: vim2m: improve debug messages media: vim2m: add bayer capture formats media: a few more typos at staging, pci, platform, radio and usb media: Documentation: fix several typos media: staging: fix several typos media: include: fix several typos media: common: fix several typos media: v4l2-core: fix several typos media: usb: fix several typos ...
2019-03-09Merge tag 'docs-5.1' of git://git.lwn.net/linuxLinus Torvalds
Pull documentation updates from Jonathan Corbet: "A fairly routine cycle for docs - lots of typo fixes, some new documents, and more translations. There's also some LICENSES adjustments from Thomas" * tag 'docs-5.1' of git://git.lwn.net/linux: (74 commits) docs: Bring some order to filesystem documentation Documentation/locking/lockdep: Drop last two chars of sample states doc: rcu: Suspicious RCU usage is a warning docs: driver-api: iio: fix errors in documentation Documentation/process/howto: Update for 4.x -> 5.x versioning docs: Explicitly state that the 'Fixes:' tag shouldn't split lines doc: security: Add kern-doc for lsm_hooks.h doc: sctp: Merge and clean up rst files Docs: Correct /proc/stat path scripts/spdxcheck.py: fix C++ comment style detection doc: fix typos in license-rules.rst Documentation: fix admin-guide/README.rst minimum gcc version requirement doc: process: complete removal of info about -git patches doc: translations: sync translations 'remove info about -git patches' perf-security: wrap paragraphs on 72 columns perf-security: elaborate on perf_events/Perf privileged users perf-security: document collected perf_events/Perf data categories perf-security: document perf_events/Perf resource control sysfs.txt: add note on available attribute macros docs: kernel-doc: typo "if ... if" -> "if ... is" ...
2019-03-09Merge tag 'linux-kselftest-5.1-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest update fromShuah Khan: - ir test compile warnings fixes - seccomp test fixes and improvements from Tycho Andersen and Kees Cook - ftrace fixes to non-POSIX-compliant constructs in colored output code and handling absence of tput from Juerg Haefliger * tag 'linux-kselftest-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/ftrace: Handle the absence of tput selftests/ftrace: Replace \e with \033 selftests/ftrace: Replace echo -e with printf selftests: ir: skip when non-root user runs the test selftests: ir: skip when lirc device doesn't exist. selftests: ir: fix warning: "%s" directive output may be truncated ’ directive output may be truncated selftests/seccomp: Actually sleep for 1/10th second selftests/harness: Update named initializer syntax selftests: unshare userns in seccomp pidns testcases selftests: set NO_NEW_PRIVS bit in seccomp user tests selftests: skip seccomp get_metadata test if not real root selftest: include stdio.h in kselftest.h selftests: fix typo in seccomp_bpf.c selftests: don't kill child immediately in get_metadata() test
2019-03-09Merge tag 'perf-core-for-mingo-5.1-20190307' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core changes from Arnaldo Carvalho de Melo: perf bpf: Arnaldo Carvalho de Melo: - Automatically add BTF ELF markers to 'perf trace' BPF programs, so that tools such as 'bpftool map dump' can pretty print map keys and values. perf c2c: Jiri Olsa: - Fix report for empty NUMA node. perf diff: Jin Yao: - Support --time, --cpu, --pid and --tid filter options. perf probe: Arnaldo Carvalho de Melo: - Clarify error message about not finding kernel modules debuginfo. perf record: Jiri Olsa: - Fixup probing for max attr.precise_ip. perf trace: Arnaldo Carvalho de Melo: - Add missing %s lost in the 'msg_flags' recvmmsg arg when adding prefix suppression logic. perf annotate: Arnaldo Carvalho de Melo: - Calculate the max instruction name, align column to that, removing the hardcoded max 6 chars and cope with instructions with names longer than that, such as vpmovmskb, vpcmpeqb, etc. kernel: Song Liu: - Consider events with attr.bpf_event set as side-band. Gustavo A. R. Silva: - Mark expected switch fall-through in perf_event_parse_addr_filter(). Libraries: Jiri Olsa: - Fix leaks and double frees on error paths. libtraceevent: Tony Jones: - Fix buffer overflow in arg_eval(). python scripting: Tony Jones: - More python3 fixes. Trivial: Yang Wei: - Remove needless extra semicolon in clang C++ glue code. Intel PT/BTS: Adrian Hunter: - Improve auxtrace address filter error message when there is no DSO. - Fix divide by zero when TSC is not available. - Further improvements to the export to sqlite/posgresql python scripts and to the GUI sqlviewer, exporting 'parent_id' so that we have enable the creation of call trees. Andi Kleen: - Generalize function to copy from thread addr space from intel-bts code. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-03-08Merge tag 'io_uring-2019-03-06' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull io_uring IO interface from Jens Axboe: "Second attempt at adding the io_uring interface. Since the first one, we've added basic unit testing of the three system calls, that resides in liburing like the other unit tests that we have so far. It'll take a while to get full coverage of it, but we're working towards it. I've also added two basic test programs to tools/io_uring. One uses the raw interface and has support for all the various features that io_uring supports outside of standard IO, like fixed files, fixed IO buffers, and polled IO. The other uses the liburing API, and is a simplified version of cp(1). This adds support for a new IO interface, io_uring. io_uring allows an application to communicate with the kernel through two rings, the submission queue (SQ) and completion queue (CQ) ring. This allows for very efficient handling of IOs, see the v5 posting for some basic numbers: https://lore.kernel.org/linux-block/20190116175003.17880-1-axboe@kernel.dk/ Outside of just efficiency, the interface is also flexible and extendable, and allows for future use cases like the upcoming NVMe key-value store API, networked IO, and so on. It also supports async buffered IO, something that we've always failed to support in the kernel. Outside of basic IO features, it supports async polled IO as well. This particular feature has already been tested at Facebook months ago for flash storage boxes, with 25-33% improvements. It makes polled IO actually useful for real world use cases, where even basic flash sees a nice win in terms of efficiency, latency, and performance. These boxes were IOPS bound before, now they are not. This series adds three new system calls. One for setting up an io_uring instance (io_uring_setup(2)), one for submitting/completing IO (io_uring_enter(2)), and one for aux functions like registrating file sets, buffers, etc (io_uring_register(2)). Through the help of Arnd, I've coordinated the syscall numbers so merge on that front should be painless. Jon did a writeup of the interface a while back, which (except for minor details that have been tweaked) is still accurate. Find that here: https://lwn.net/Articles/776703/ Huge thanks to Al Viro for helping getting the reference cycle code correct, and to Jann Horn for his extensive reviews focused on both security and bugs in general. There's a userspace library that provides basic functionality for applications that don't need or want to care about how to fiddle with the rings directly. It has helpers to allow applications to easily set up an io_uring instance, and submit/complete IO through it without knowing about the intricacies of the rings. It also includes man pages (thanks to Jeff Moyer), and will continue to grow support helper functions and features as time progresses. Find it here: git://git.kernel.dk/liburing Fio has full support for the raw interface, both in the form of an IO engine (io_uring), but also with a small test application (t/io_uring) that can exercise and benchmark the interface" * tag 'io_uring-2019-03-06' of git://git.kernel.dk/linux-block: io_uring: add a few test tools io_uring: allow workqueue item to handle multiple buffered requests io_uring: add support for IORING_OP_POLL io_uring: add io_kiocb ref count io_uring: add submission polling io_uring: add file set registration net: split out functions related to registering inflight socket files io_uring: add support for pre-mapped user IO buffers block: implement bio helper to add iter bvec pages to bio io_uring: batch io_kiocb allocation io_uring: use fget/fput_many() for file references fs: add fget_many() and fput_many() io_uring: support for IO polling io_uring: add fsync support Add io_uring IO interface
2019-03-08bpf, libbpf: fixing leak when kernel does not support btfNikita V. Shirokov
We could end up in situation when we have object file w/ all btf info, but kernel does not support btf yet. In this situation currently libbpf just set obj->btf to NULL w/o freeing it first. This patch is fixing it by making sure to run btf__free first. Fixes: d29d87f7e612 ("btf: separate btf creation and loading") Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching Pull livepatching updates from Jiri Kosina: - support for something we call 'atomic replace', and allows for much better handling of cumulative patches (which is something very useful for distros), from Jason Baron with help of Petr Mladek and Joe Lawrence - improvement of handling of tasks blocking finalization, from Miroslav Benes - update of MAINTAINERS file to reflect move towards group maintainership * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching: (22 commits) livepatch/selftests: use "$@" to preserve argument list livepatch: Module coming and going callbacks can proceed with all listed patches livepatch: Proper error handling in the shadow variables selftest livepatch: return -ENOMEM on ptr_id() allocation failure livepatch: Introduce klp_for_each_patch macro livepatch: core: Return EOPNOTSUPP instead of ENOSYS selftests/livepatch: add DYNAMIC_DEBUG config dependency livepatch: samples: non static warnings fix livepatch: update MAINTAINERS livepatch: Remove signal sysfs attribute livepatch: Send a fake signal periodically selftests/livepatch: introduce tests livepatch: Remove ordering (stacking) of the livepatches livepatch: Atomic replace and cumulative patches documentation livepatch: Remove Nop structures when unused livepatch: Add atomic replace livepatch: Use lists to manage patches, objects and functions livepatch: Simplify API by removing registration step livepatch: Don't block the removal of patches loaded after a forced transition livepatch: Consolidate klp_free functions ...
2019-03-07Merge tag 'powerpc-5.1-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Notable changes: - Enable THREAD_INFO_IN_TASK to move thread_info off the stack. - A big series from Christoph reworking our DMA code to use more of the generic infrastructure, as he said: "This series switches the powerpc port to use the generic swiotlb and noncoherent dma ops, and to use more generic code for the coherent direct mapping, as well as removing a lot of dead code." - Increase our vmalloc space to 512T with the Hash MMU on modern CPUs, allowing us to support machines with larger amounts of total RAM or distance between nodes. - Two series from Christophe, one to optimise TLB miss handlers on 6xx, and another to optimise the way STRICT_KERNEL_RWX is implemented on some 32-bit CPUs. - Support for KCOV coverage instrumentation which means we can run syzkaller and discover even more bugs in our code. And as always many clean-ups, reworks and minor fixes etc. Thanks to: Alan Modra, Alexey Kardashevskiy, Alistair Popple, Andrea Arcangeli, Andrew Donnellan, Aneesh Kumar K.V, Aravinda Prasad, Balbir Singh, Brajeswar Ghosh, Breno Leitao, Christian Lamparter, Christian Zigotzky, Christophe Leroy, Christoph Hellwig, Corentin Labbe, Daniel Axtens, David Gibson, Diana Craciun, Firoz Khan, Gustavo A. R. Silva, Igor Stoppa, Joe Lawrence, Joel Stanley, Jonathan Neuschäfer, Jordan Niethe, Laurent Dufour, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Masahiro Yamada, Mathieu Malaterre, Matteo Croce, Meelis Roos, Michael W. Bringmann, Nathan Chancellor, Nathan Fontenot, Nicholas Piggin, Nick Desaulniers, Nicolai Stange, Oliver O'Halloran, Paul Mackerras, Peter Xu, PrasannaKumar Muralidharan, Qian Cai, Rashmica Gupta, Reza Arbab, Robert P. J. Day, Russell Currey, Sabyasachi Gupta, Sam Bobroff, Sandipan Das, Sergey Senozhatsky, Souptick Joarder, Stewart Smith, Tyrel Datwyler, Vaibhav Jain, YueHaibing" * tag 'powerpc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (200 commits) powerpc/32: Clear on-stack exception marker upon exception return powerpc: Remove export of save_stack_trace_tsk_reliable() powerpc/mm: fix "section_base" set but not used powerpc/mm: Fix "sz" set but not used warning powerpc/mm: Check secondary hash page table powerpc: remove nargs from __SYSCALL powerpc/64s: Fix unrelocated interrupt trampoline address test powerpc/powernv/ioda: Fix locked_vm counting for memory used by IOMMU tables powerpc/fsl: Fix the flush of branch predictor. powerpc/powernv: Make opal log only readable by root powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc powerpc/powernv: move OPAL call wrapper tracing and interrupt handling to C powerpc/64s: Fix data interrupts vs d-side MCE reentrancy powerpc/64s: Prepare to handle data interrupts vs d-side MCE reentrancy powerpc/64s: system reset interrupt preserve HSRRs powerpc/64s: Fix HV NMI vs HV interrupt recoverability test powerpc/mm/hash: Handle mmap_min_addr correctly in get_unmapped_area topdown search powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback selftests/powerpc: Remove duplicate header powerpc sstep: Add support for modsd, modud instructions ...
2019-03-07Merge branch 'next-general' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: - Extend LSM stacking to allow sharing of cred, file, ipc, inode, and task blobs. This paves the way for more full-featured LSMs to be merged, and is specifically aimed at LandLock and SARA LSMs. This work is from Casey and Kees. - There's a new LSM from Micah Morton: "SafeSetID gates the setid family of syscalls to restrict UID/GID transitions from a given UID/GID to only those approved by a system-wide whitelist." This feature is currently shipping in ChromeOS. * 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (62 commits) keys: fix missing __user in KEYCTL_PKEY_QUERY LSM: Update list of SECURITYFS users in Kconfig LSM: Ignore "security=" when "lsm=" is specified LSM: Update function documentation for cap_capable security: mark expected switch fall-throughs and add a missing break tomoyo: Bump version. LSM: fix return value check in safesetid_init_securityfs() LSM: SafeSetID: add selftest LSM: SafeSetID: remove unused include LSM: SafeSetID: 'depend' on CONFIG_SECURITY LSM: Add 'name' field for SafeSetID in DEFINE_LSM LSM: add SafeSetID module that gates setid calls LSM: add SafeSetID module that gates setid calls tomoyo: Allow multiple use_group lines. tomoyo: Coding style fix. tomoyo: Swicth from cred->security to task_struct->security. security: keys: annotate implicit fall throughs security: keys: annotate implicit fall throughs security: keys: annotate implicit fall through capabilities:: annotate implicit fall through ...
2019-03-07bpf: fix replace_map_fd_with_map_ptr's ldimm64 second imm fieldDaniel Borkmann
Non-zero imm value in the second part of the ldimm64 instruction for BPF_PSEUDO_MAP_FD is invalid, and thus must be rejected. The map fd only ever sits in the first instructions' imm field. None of the BPF loaders known to us are using it, so risk of regression is minimal. For clarity and consistency, the few insn->{src_reg,imm} occurrences are rewritten into insn[0].{src_reg,imm}. Add a test case to the BPF selftest suite as well. Fixes: 0246e64d9a5f ("bpf: handle pseudo BPF_LD_IMM64 insn") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-03-07selftests: bpf: test_progs: initialize duration in singal_pending testStanislav Fomichev
CHECK macro implicitly uses duration. We call CHECK() a couple of times before duration is initialized from bpf_prog_test_run(). Explicitly set duration to 0 to avoid compiler warnings. Fixes: 740f8a657221 ("selftests/bpf: make sure signal interrupts BPF_PROG_TEST_RUN") Signed-off-by: Stanislav Fomichev <sdf@google.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-07libbpf: force fixdep compilation at the start of the buildStanislav Fomichev
libbpf targets don't explicitly depend on fixdep target, so when we do 'make -j$(nproc)', there is a high probability, that some objects will be built before fixdep binary is available. Fix this by running sub-make; this makes sure that fixdep dependency is properly accounted for. For the same issue in perf, see commit abb26210a395 ("perf tools: Force fixdep compilation at the start of the build"). Before: $ rm -rf /tmp/bld; mkdir /tmp/bld; make -j$(nproc) O=/tmp/bld -C tools/lib/bpf/ Auto-detecting system features: ... libelf: [ on ] ... bpf: [ on ] HOSTCC /tmp/bld/fixdep.o CC /tmp/bld/libbpf.o CC /tmp/bld/bpf.o CC /tmp/bld/btf.o CC /tmp/bld/nlattr.o CC /tmp/bld/libbpf_errno.o CC /tmp/bld/str_error.o CC /tmp/bld/netlink.o CC /tmp/bld/bpf_prog_linfo.o CC /tmp/bld/libbpf_probes.o CC /tmp/bld/xsk.o HOSTLD /tmp/bld/fixdep-in.o LINK /tmp/bld/fixdep LD /tmp/bld/libbpf-in.o LINK /tmp/bld/libbpf.a LINK /tmp/bld/libbpf.so LINK /tmp/bld/test_libbpf $ head /tmp/bld/.libbpf.o.cmd # cannot find fixdep (/usr/local/google/home/sdf/src/linux/xxx//fixdep) # using basic dep data /tmp/bld/libbpf.o: libbpf.c /usr/include/stdc-predef.h \ /usr/include/stdlib.h /usr/include/features.h \ /usr/include/x86_64-linux-gnu/sys/cdefs.h \ /usr/include/x86_64-linux-gnu/bits/wordsize.h \ /usr/include/x86_64-linux-gnu/gnu/stubs.h \ /usr/include/x86_64-linux-gnu/gnu/stubs-64.h \ /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h \ After: $ rm -rf /tmp/bld; mkdir /tmp/bld; make -j$(nproc) O=/tmp/bld -C tools/lib/bpf/ Auto-detecting system features: ... libelf: [ on ] ... bpf: [ on ] HOSTCC /tmp/bld/fixdep.o HOSTLD /tmp/bld/fixdep-in.o LINK /tmp/bld/fixdep CC /tmp/bld/libbpf.o CC /tmp/bld/bpf.o CC /tmp/bld/nlattr.o CC /tmp/bld/btf.o CC /tmp/bld/libbpf_errno.o CC /tmp/bld/str_error.o CC /tmp/bld/netlink.o CC /tmp/bld/bpf_prog_linfo.o CC /tmp/bld/libbpf_probes.o CC /tmp/bld/xsk.o LD /tmp/bld/libbpf-in.o LINK /tmp/bld/libbpf.a LINK /tmp/bld/libbpf.so LINK /tmp/bld/test_libbpf $ head /tmp/bld/.libbpf.o.cmd cmd_/tmp/bld/libbpf.o := gcc -Wp,-MD,/tmp/bld/.libbpf.o.d -Wp,-MT,/tmp/bld/libbpf.o -g -Wall -DHAVE_LIBELF_MMAP_SUPPORT -DCOMPAT_NEED_REALLOCARRAY -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wshadow -Wstrict-prototypes -Wswitch-default -Wswitch-enum -Wundef -Wwrite-strings -Wformat -Wstrict-aliasing=3 -Werror -Wall -fPIC -I. -I/usr/local/google/home/sdf/src/linux/tools/include -I/usr/local/google/home/sdf/src/linux/tools/arch/x86/include/uapi -I/usr/local/google/home/sdf/src/linux/tools/include/uapi -fvisibility=hidden -D"BUILD_STR(s)=$(pound)s" -c -o /tmp/bld/libbpf.o libbpf.c source_/tmp/bld/libbpf.o := libbpf.c deps_/tmp/bld/libbpf.o := \ /usr/include/stdc-predef.h \ /usr/include/stdlib.h \ /usr/include/features.h \ /usr/include/x86_64-linux-gnu/sys/cdefs.h \ /usr/include/x86_64-linux-gnu/bits/wordsize.h \ Fixes: 7c422f557266 ("tools build: Build fixdep helper from perf and basic libs") Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-07selftests: bpf: fix compilation with out-of-tree $(OUTPUT)Stanislav Fomichev
A bunch of related changes lumped together: * Create prog_tests and verifier output directories; these don't exist with out-of-tree $(OUTPUT) * Add missing -I (via separate TEST_{PROGS,VERIFIER}_CFLAGS) for the main tree ($(PWD) != $(OUTPUT) for out-of-tree) * Add libbpf.a dependency for test_progs_32 (parallel make fails otherwise) * Add missing "; \" after "cd" when generating test.h headers Tested by: $ alias m="make -s -j$(nproc)" $ m -C tools/testing/selftests/bpf/ clean $ m -C tools/lib/bpf/ clean $ rm -rf xxx; mkdir xxx; m -C tools/testing/selftests/bpf/ OUTPUT=$PWD/xxx $ m -C tools/testing/selftests/bpf/ Fixes: 3f30658830f3 ("selftests: bpf: break up test_progs - preparations") Fixes: 2dfb40121ee8 ("selftests: bpf: prepare for break up of verifier tests") Fixes: 3ef84346c561 ("selftests: bpf: makefile support sub-register code-gen test mode") Signed-off-by: Stanislav Fomichev <sdf@google.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-07selftests/bpf: test that GSO works in lwt_ip_encapPeter Oskolkov
Add a test on egress that a large TCP packet successfully goes through the lwt+bpf encap tunnel. Although there is no direct evidence that GSO worked, as opposed to e.g. TCP segmentation or IP fragmentation (maybe a kernel stats counter should be added to track the number of failed GSO attempts?), without the previous patch in the patchset this test fails, and printk-debugging showed that software-based GSO succeeded here (veth is not compatible with SKB_GSO_DODGY, so GSO happens in the software stack). Also removed an unnecessary nodad and added a missed failed flag. Signed-off-by: Peter Oskolkov <posk@google.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-06Merge tag 'staging-5.1-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging/IIO updates from Greg KH: "Here is the big staging/iio driver pull request for 5.1-rc1. Lots of good IIO driver updates and cleanups in here as always. Combined with the removal of the xgifb driver, we have a net "loss" of over 9000 lines in the pull request, always a nice thing. As the outreachy application process is currently happening, there are loads of tiny checkpatch cleanup fixes all over the staging tree, which accounts for the majority of the fixups" * tag 'staging-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (341 commits) staging: mt7621-dma: remove license boilerplate text staging: mt7621-dma: add SPDX GPL-2.0+ license identifier Staging: ks7010: Replace typecast to int Staging: vt6655: Align a static function declaration staging: speakup: fix line over 80 characters. staging: mt7621-eth: Remove license boilerplate text staging: mt7621-eth: Add SPDX license identifier staging: ks7010: removed custom Michael MIC implementation. staging: rtl8192e: Fix space and suspect issue Staging: vt6655: Modify comment style of SPDX License Identifier Staging: vt6655: Modify comment style for SPDX-License-Identifier Staging: vt6655: Align a function declaration Staging: vt6655: Alignment of function declaration staging: rtl8712: Fix indentation issue staging: wilc1000: fix incorrent type in initializer staging: rtl8188eu: remove unused P2P_PRIVATE_IOCTL_SET_LEN staging: rtl8188eu: remove unused enum P2P_PROTO_WK_ID staging: rtl8723bs: Remove duplicated include from drv_types.h Staging: vt6655: Alignment should match open parenthesis staging: erofs: fix mis-acted TAIL merging behavior ...
2019-03-06Merge tag 'driver-core-5.1-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the big driver core patchset for 5.1-rc1 More patches than "normal" here this merge window, due to some work in the driver core by Alexander Duyck to rework the async probe functionality to work better for a number of devices, and independant work from Rafael for the device link functionality to make it work "correctly". Also in here is: - lots of BUS_ATTR() removals, the macro is about to go away - firmware test fixups - ihex fixups and simplification - component additions (also includes i915 patches) - lots of minor coding style fixups and cleanups. All of these have been in linux-next for a while with no reported issues" * tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (65 commits) driver core: platform: remove misleading err_alloc label platform: set of_node in platform_device_register_full() firmware: hardcode the debug message for -ENOENT driver core: Add missing description of new struct device_link field driver core: Fix PM-runtime for links added during consumer probe drivers/component: kerneldoc polish async: Add cmdline option to specify drivers to be async probed driver core: Fix possible supplier PM-usage counter imbalance PM-runtime: Fix __pm_runtime_set_status() race with runtime resume driver: platform: Support parsing GpioInt 0 in platform_get_irq() selftests: firmware: fix verify_reqs() return value Revert "selftests: firmware: remove use of non-standard diff -Z option" Revert "selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config" device: Fix comment for driver_data in struct device kernfs: Allocating memory for kernfs_iattrs with kmem_cache. sysfs: remove unused include of kernfs-internal.h driver core: Postpone DMA tear-down until after devres release driver core: Document limitation related to DL_FLAG_RPM_ACTIVE PM-runtime: Take suppliers into account in __pm_runtime_set_status() device.h: Add __cold to dev_<level> logging functions ...
2019-03-06Merge tag 'acpi-5.1-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI updates from Rafael Wysocki: "These are ACPICA updates including ACPI 6.3 support among other things, APEI updates including the ARM Software Delegated Exception Interface (SDEI) support, ACPI EC driver fixes and cleanups and other assorted improvements. Specifics: - Update the ACPICA code in the kernel to upstream revision 20190215 including ACPI 6.3 support and more: * New predefined methods: _NBS, _NCH, _NIC, _NIH, and _NIG (Erik Schmauss). * Update of the PCC Identifier structure in PDTT (Erik Schmauss). * Support for new Generic Affinity Structure subtable in SRAT (Erik Schmauss). * New PCC operation region support (Erik Schmauss). * Support for GICC statistical profiling for MADT (Erik Schmauss). * New Error Disconnect Recover notification support (Erik Schmauss). * New PPTT Processor Structure Flags fields support (Erik Schmauss). * ACPI 6.3 HMAT updates (Erik Schmauss). * GTDT Revision 3 support (Erik Schmauss). * Legacy module-level code (MLC) support removal (Erik Schmauss). * Update/clarification of messages for control method failures (Bob Moore). * Warning on creation of a zero-length opregion (Bob Moore). * acpiexec option to dump extra info for memory leaks (Bob Moore). * More ACPI error to firmware error conversions (Bob Moore). * Debugger fix (Bob Moore). * Copyrights update (Bob Moore) - Clean up sleep states support code in ACPICA (Christoph Hellwig) - Rework in_nmi() handling in the APEI code and add suppor for the ARM Software Delegated Exception Interface (SDEI) to it (James Morse) - Fix possible out-of-bounds accesses in BERT-related core (Ross Lagerwall) - Fix the APEI code parsing HEST that includes a Deferred Machine Check subtable (Yazen Ghannam) - Use DEFINE_DEBUGFS_ATTRIBUTE for APEI-related debugfs files (YueHaibing) - Switch the APEI ERST code to the new generic UUID API (Andy Shevchenko) - Update the MAINTAINERS entry for APEI (Borislav Petkov) - Fix and clean up the ACPI EC driver (Rafael Wysocki, Zhang Rui) - Fix DMI checks handling in the ACPI backlight driver and add the "Lunch Box" chassis-type check to it (Hans de Goede) - Add support for using ACPI table overrides included in built-in initrd images (Shunyong Yang) - Update ACPI device enumeration to treat the PWM2 device as "always present" on Lenovo Yoga Book (Yauhen Kharuzhy) - Fix up the enumeration of device objects with the PRP0001 device ID (Andy Shevchenko) - Clean up PPTT parsing error messages (John Garry) - Clean up debugfs files creation handling (Greg Kroah-Hartman, Rafael Wysocki) - Clean up the ACPI DPTF Makefile (Masahiro Yamada)" * tag 'acpi-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits) ACPI / bus: Respect PRP0001 when retrieving device match data ACPICA: Update version to 20190215 ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting ACPICA: ACPI 6.3: add GTDT Revision 3 support ACPICA: ACPI 6.3: HMAT updates ACPICA: ACPI 6.3: PPTT add additional fields in Processor Structure Flags ACPICA: ACPI 6.3: add Error Disconnect Recover Notification value ACPICA: ACPI 6.3: MADT: add support for statistical profiling in GICC ACPICA: ACPI 6.3: add PCC operation region support for AML interpreter efi: cper: Fix possible out-of-bounds access ACPI: APEI: Fix possible out-of-bounds access to BERT region ACPICA: ACPI 6.3: SRAT: add Generic Affinity Structure subtable ACPICA: ACPI 6.3: Add Trigger order to PCC Identifier structure in PDTT ACPICA: ACPI 6.3: Adding predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG ACPICA: Update/clarify messages for control method failures ACPICA: Debugger: Fix possible fault with the "test objects" command ACPICA: Interpreter: Emit warning for creation of a zero-length op region ACPICA: Remove legacy module-level code support ACPI / x86: Make PWM2 device always present at Lenovo Yoga Book ACPI / video: Extend chassis-type detection with a "Lunch Box" check ..
2019-03-06perf data: Force perf_data__open|close zero data->file.pathJiri Olsa
Making sure the data->file.path is zeroed on perf_data__open error path and in perf_data__close, so we don't double free it in case someone call it twice. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf session: Fix double free in perf_data__closeJiri Olsa
We can't call perf_data__close and subsequently perf_session__delete, because it will call perf_data__close again and cause double free for data->file.path. $ perf report -i . incompatible file format (rerun with -v to learn more) free(): double free detected in tcache 2 Aborted (core dumped) In fact we don't need to call perf_data__close at all, because at the time the got out_close is reached, session->data is already initialized, so the perf_data__close call will be triggered from perf_session__delete. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Fixes: 2d4f27999b88 ("perf data: Add global path holder") Link: http://lkml.kernel.org/r/20190305152536.21035-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf evsel: Probe for precise_ip with simple attrJiri Olsa
Currently we probe for precise_ip with user specified perf_event_attr, which might fail because of unsupported kernel features, which would get disabled during the open time anyway. Switching the probe to take place on simple hw cycles, so the following record sets proper precise_ip: # perf record -e cycles:P ls # perf evlist -v cycles:P: size: 112, ... precise_ip: 3, ... Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf tools: Read and store caps/max_precise in perf_pmuJiri Olsa
Read the caps/max_precise value and store it in struct perf_pmu to be used when setting the maximum precise_ip field in following patch. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf hist: Fix memory leak of srclineJiri Olsa
We can't allocate he->srcline unconditionaly, only when new hist_entry is created. Moving he->srcline allocation into hist_entry__init function. Original-patch-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Suggested-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf hist: Add error path into hist_entry__initJiri Olsa
Adding error path into hist_entry__init to unify error handling, so every new member does not need to free everything else. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: nageswara r sastry <nasastry@in.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf c2c: Fix c2c report for empty numa nodeJiri Olsa
Ravi Bangoria reported that we fail with an empty NUMA node with the following message: $ lscpu NUMA node0 CPU(s): NUMA node1 CPU(s): 0-4 $ sudo ./perf c2c report node/cpu topology bugFailed setup nodes Fix this by detecting the empty node and keeping its CPU set empty. Reported-by: Nageswara R Sastry <nasastry@in.ibm.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190305152536.21035-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf script python: Add Python3 support to intel-pt-events.pyTony Jones
Support both Python2 and Python3 in the intel-pt-events.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/fd26acf9-0c0f-717f-9664-a3c33043ce19@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf script python: Add Python3 support to event_analyzing_sample.pyTony Jones
Support both Python2 and Python3 in the event_analyzing_sample.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Feng Tang <feng.tang@intel.com> Link: http://lkml.kernel.org/r/20190302011903.2416-5-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf script python: add Python3 support to check-perf-trace.pyTony Jones
Support both Python 2 and Python 3 in the check-perf-trace.py script. There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of from __future__ implies the minimum supported version of Python2 is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/r/20190302011903.2416-4-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf script python: Add Python3 support to futex-contention.pyTony Jones
Support both Python2 and Python3 in the futex-contention.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190302011903.2416-3-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf script python: Remove mixed indentationTony Jones
Remove mixed indentation in Python scripts. Revert to either all tabs (most common form) or all spaces (4 or 8) depending on what was the intent of the original commit. This is necessary to complete Python3 support as it will flag an error if it encounters mixed indentation. Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190302011903.2416-2-tonyj@suse.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf diff: Support --pid/--tid filter optionsJin Yao
Using the existing symbol_conf.pid_list_str and symbol_conf.tid_list_str logic. For example: perf diff --tid 13965 It'll only diff the samples for thread 13965. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551791143-10334-4-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf diff: Support --cpu filter optionJin Yao
To improve 'perf diff', implement a --cpu filter option. Multiple CPUs can be provided as a comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2. Default is to report samples on all CPUs. For example, perf diff --cpu 0,1 It only diff the samples for CPU0 and CPU1. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551791143-10334-3-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf diff: Support --time filter optionJin Yao
To improve 'perf diff', implement a --time filter option to diff the samples within given time window. It supports time percent with multiple time ranges. The time string format is 'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'. For example: Select the second 10% time slice to diff: perf diff --time 10%/2 Select from 0% to 10% time slice to diff: perf diff --time 0%-10% Select the first and the second 10% time slices to diff: perf diff --time 10%/1,10%/2 Select from 0% to 10% and 30% to 40% slices to diff: perf diff --time 0%-10%,30%-40% It also supports analysing samples within a given time window <start>,<stop>. Times have the format seconds.microseconds. If 'start' is not given (i.e., time string is ',x.y') then analysis starts at the beginning of the file. If the stop time is not given (i.e, time string is 'x.y,') then analysis goes to end of file. Time string is 'a1.b1,c1.d1:a2.b2,c2.d2'. Use ':' to separate timestamps for different perf.data files. For example, we get the timestamp information from perf script. perf script -i perf.data.old mgen 13940 [000] 3946.361400: ... perf script -i perf.data mgen 13940 [000] 3971.150589 ... perf diff --time 3946.361400,:3971.150589, It analyzes the perf.data.old from the timestamp 3946.361400 to the end of perf.data.old and analyzes the perf.data from the timestamp 3971.150589 to the end of perf.data. v4: --- Update abstime_str_dup(), let it return error if strdup is failed, and update __cmd_diff() accordingly. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551791143-10334-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06perf thread: Generalize function to copy from thread addr space from ↵Andi Kleen
intel-bts code Add a utility function to fetch executable code. Convert one user over to it. There are more places doing that, but they do significantly different actions, so they are not easy to fit into a single library function. Committer changes: . No need to cast around, make 'buf' be a void pointer. . Rename it to thread__memcpy() to reflect the fact it is about copying a chunk of memory from a thread, i.e. from its address space. . No need to have it in a separate object file, move it to thread.[ch] . Check the return of map__load(), the original code didn't do it, but since we're moving this around, check that as well. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/r/20190305144758.12397-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-06io_uring: add a few test toolsJens Axboe
This adds two test programs in tools/io_uring/ that demonstrate both the raw io_uring API (and all features) through a small benchmark app, io_uring-bench, and the liburing exposed API in a simplified cp(1) implementation through io_uring-cp. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-03-06perf annotate: Calculate the max instruction name, align column to thatArnaldo Carvalho de Melo
We were hardcoding '6' as the max instruction name, and we have lots that are longer than that, see the diff from two 'P' printed TUI annotations for a libc function that uses instructions with long names, such as 'vpmovmskb' with its 9 chars: --- __strcmp_avx2.annotation.before 2019-03-06 16:31:39.368020425 -0300 +++ __strcmp_avx2.annotation 2019-03-06 16:32:12.079450508 -0300 @@ -2,284 +2,284 @@ Event: cycles:ppp Percent endbr64 - 0.10 mov %edi,%eax + 0.10 mov %edi,%eax - xor %edx,%edx + xor %edx,%edx - 3.54 vpxor %ymm7,%ymm7,%ymm7 + 3.54 vpxor %ymm7,%ymm7,%ymm7 - or %esi,%eax + or %esi,%eax - and $0xfff,%eax + and $0xfff,%eax - cmp $0xf80,%eax + cmp $0xf80,%eax - ↓ jg 370 + ↓ jg 370 - 27.07 vmovdqu (%rdi),%ymm1 + 27.07 vmovdqu (%rdi),%ymm1 - 7.97 vpcmpeqb (%rsi),%ymm1,%ymm0 + 7.97 vpcmpeqb (%rsi),%ymm1,%ymm0 - 2.15 vpminub %ymm1,%ymm0,%ymm0 + 2.15 vpminub %ymm1,%ymm0,%ymm0 - 4.09 vpcmpeqb %ymm7,%ymm0,%ymm0 + 4.09 vpcmpeqb %ymm7,%ymm0,%ymm0 - 0.43 vpmovmskb %ymm0,%ecx + 0.43 vpmovmskb %ymm0,%ecx - 1.53 test %ecx,%ecx + 1.53 test %ecx,%ecx - ↓ je b0 + ↓ je b0 - 5.26 tzcnt %ecx,%edx + 5.26 tzcnt %ecx,%edx - 18.40 movzbl (%rdi,%rdx,1),%eax + 18.40 movzbl (%rdi,%rdx,1),%eax - 7.09 movzbl (%rsi,%rdx,1),%edx + 7.09 movzbl (%rsi,%rdx,1),%edx - 3.34 sub %edx,%eax + 3.34 sub %edx,%eax 2.37 vzeroupper ← retq nop - 50: tzcnt %ecx,%edx + 50: tzcnt %ecx,%edx - movzbl 0x20(%rdi,%rdx,1),%eax + movzbl 0x20(%rdi,%rdx,1),%eax - movzbl 0x20(%rsi,%rdx,1),%edx + movzbl 0x20(%rsi,%rdx,1),%edx - sub %edx,%eax + sub %edx,%eax vzeroupper ← retq - data16 nopw %cs:0x0(%rax,%rax,1) + data16 nopw %cs:0x0(%rax,%rax,1) Reported-by: Travis Downs <travis.downs@gmail.com> LPU-Reference: CAOBGo4z1KfmWeOm6Et0cnX5Z6DWsG2PQbAvRn1MhVPJmXHrc5g@mail.gmail.com Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-89wsdd9h9g6bvq52sgp6d0u4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-09 18:56:00 +0000