- Apr 23, 2018
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Souptick Joarder authored
Use new return type vm_fault_t for the fault handler in struct vm_operations_struct. For now, this is just documenting that the function returns a VM_FAULT value rather than an errno. Once all instances are converted, vm_fault_t will become a distinct type. This driver failed to handle any error returned by vm_insert_pfn. Use the new vmf_insert_pfn function to return the correct value. Signed-off-by:
Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by:
Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Samuel Holland authored
Register a simplefb framebuffer when the coreboot table contains a framebuffer entry. Signed-off-by:
Samuel Holland <samuel@sholland.org> Signed-off-by:
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Samuel Holland authored
Now that all users of the coreboot_table_find function have been updated to hang off the coreboot table bus instead, remove it. Signed-off-by:
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Samuel Holland authored
Remove the ad-hoc coreboot table search. Now the driver will only be probed when the necessary coreboot table entry has already been found. Furthermore, since the coreboot bus takes care of creating the device, a separate platform device is no longer needed. Signed-off-by:
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Samuel Holland authored
Remove the ad-hoc coreboot table search. Now the driver will only be probed when the necessary coreboot table entry has already been found. Signed-off-by:
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Samuel Holland authored
This simplifies creating device drivers for hardware or information described in the coreboot table. It also avoids needing to search through the table every time a driver is loaded. Signed-off-by:
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Alan Tull authored
Add a comment to the header of fpga_region_program_fpga() regarding locking of the bridges. Signed-off-by:
Alan Tull <atull@kernel.org> Signed-off-by:
Moritz Fischer <mdf@kernel.org> Signed-off-by:
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Paolo Pisati authored
This patch adds support to the FPGA manager for programming MachXO2 device’s internal flash memory, via slave SPI. Signed-off-by:
Paolo Pisati <p.pisati@gmail.com> [atull@kernel.org: use existing FPGA mgr API] Signed-off-by:
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Paolo Pisati authored
Add dt binding documentation details for Lattice MachXO2 FPGA configuration over Slave SPI interface. Signed-off-by:
Rob Herring <robh@kernel.org> Acked-by:
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Geert Uytterhoeven authored
Remove dependencies on HAS_DMA where a Kconfig symbol depends on another symbol that implies HAS_DMA, and, optionally, on "|| COMPILE_TEST". In most cases this other symbol is an architecture or platform specific symbol, or PCI. Generic symbols and drivers without platform dependencies keep their dependencies on HAS_DMA, to prevent compiling subsystems or drivers that cannot work anyway. This simplifies the dependencies, and allows to improve compile-testing. Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by:
Mark Brown <broonie@kernel.org> Acked-by:
Robin Murphy <robin.murphy@arm.com> Acked-by:
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Fabio Estevam authored
Structure platform_driver does not need to set the owner field, as this will be populated by the driver core. Generated by scripts/coccinelle/api/platform_no_drv_owner.cocci. Signed-off-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
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Peter Rosin authored
Use the new probe style for i2c drivers. Signed-off-by:
Peter Rosin <peda@axentia.se> Signed-off-by:
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Jia-Ju Bai authored
kim_probe() is never called in atomic context. This function is only set as ".probe" in struct platform_driver. Despite never getting called from atomic context, kim_probe() calls kzalloc() with GFP_ATOMIC, which does not sleep for allocation. GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL, which can sleep and improve the possibility of sucessful allocation. This is found by a static analysis tool named DCNS written by myself. And I also manually check it. Signed-off-by:
Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by:
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Laura Abbott authored
There's an ongoing effort to remove VLAs[1] from the kernel to eventually turn on -Wvla. The single VLA can either take a value of 2 or 4 so switch to the upper bound. [1] https://lkml.org/lkml/2018/3/7/621 Signed-off-by:
Laura Abbott <labbott@redhat.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Souptick Joarder authored
Use new return type vm_fault_t for fault handler in struct vm_operations_struct. For now, this is just documenting that the function returns a VM_ FAULT value rather than an errno. Once all inst ances are converted, vm_fault_t will become a di stinct type. Reference - 1c8f4220 ("mm: change return type to vm_fault_t") Signed-off-by:
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Souptick Joarder authored
Use new return type vm_fault_t for fault handler. For now, this is just documenting that the function returns a VM_FAULT value rather than an errno. Once all instances are converted, vm_fault_t will become a distinct type. Reference id -> 1c8f4220 ("mm: change return type to vm_fault_t") previously cxl_mmap_fault returns VM_FAULT_NOPAGE as default value irrespective of vm_insert_pfn() return value. This bug is fixed with new vmf_insert_pfn() which will return VM_FAULT_ type based on err. Signed-off-by:
Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by:
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Dan Carpenter authored
It doesn't make any difference to runtime but I've switched these two checks to make my static checker happy. The problem is that "buffer->data_size" is user controlled and if it's less than "sizeo(*hdr)" then that means "offset" can be more than "buffer->data_size". It's just cleaner to check it in the other order. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Martijn Coenen <maco@android.com> Signed-off-by:
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Linus Torvalds authored
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Exynos, i915, vc4, amdgpu fixes. i915: - an oops fix - two race fixes - some gvt fixes amdgpu: - dark screen fix - clk/voltage fix - vega12 smu fix vc4: - memory leak fix exynos just drops some code" * tag 'drm-fixes-for-v4.17-rc2' of git://people.freedesktop.org/~airlied/linux: (23 commits) drm/amd/powerplay: header file interface to SMU update drm/amd/pp: Fix bug voltage can't be OD separately on VI drm/amd/display: Don't program bypass on linear regamma LUT drm/i915: Fix LSPCON TMDS output buffer enabling from low-power state drm/i915/audio: Fix audio detection issue on GLK drm/i915: Call i915_perf_fini() on init_hw error unwind drm/i915/bios: filter out invalid DDC pins from VBT child devices drm/i915/pmu: Inspect runtime PM state more carefully while estimating RC6 drm/i915: Do no use kfree() to free a kmem_cache_alloc() return value drm/exynos: exynos_drm_fb -> drm_framebuffer drm/exynos: Move dma_addr out of exynos_drm_fb drm/exynos: Move GEM BOs to drm_framebuffer drm: Fix HDCP downstream dev count read drm/vc4: Fix memory leak during BO teardown drm/i915/execlists: Clear user-active flag on preemption completion drm/i915/gvt: Add drm_format_mod update drm/i915/gvt: Disable primary/sprite/cursor plane at virtual display initialization drm/i915/gvt: Delete redundant error message in fb_decode.c drm/i915/gvt: Cancel dma map when resetting ggtt entries drm/i915/gvt: Missed to cancel dma map for ggtt entries ...
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git://people.freedesktop.org/~agd5f/linuxDave Airlie authored
- Fix a dark screen issue in DC - Fix clk/voltage dependency tracking for wattman - Update SMU interface for vega12 * 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux: drm/amd/powerplay: header file interface to SMU update drm/amd/pp: Fix bug voltage can't be OD separately on VI drm/amd/display: Don't program bypass on linear regamma LUT
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Dave Airlie authored
Merge tag 'exynos-drm-fixes-for-v4.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next Remove Exynos specific framebuffer structure and relevant functions. - it removes exynos_drm_fb structure which is a wrapper of drm_framebuffer and unnecessary two exynos specific callback functions, exynos_drm_destory() and exynos_drm_fb_create_handle() because we can reuse existing drm common callback ones instead. * tag 'exynos-drm-fixes-for-v4.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: drm/exynos: exynos_drm_fb -> drm_framebuffer drm/exynos: Move dma_addr out of exynos_drm_fb drm/exynos: Move GEM BOs to drm_framebuffer drm/amdkfd: Deallocate SDMA queues correctly drm/amdkfd: Fix scratch memory with HWS enabled
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Dave Airlie authored
Merge tag 'drm-intel-next-fixes-2018-04-19' of git://anongit.freedesktop.org/drm/drm-intel into drm-next - Fix for FDO #105549: Avoid OOPS on bad VBT (Jani) - Fix rare pre-emption race (Chris) - Fix RC6 race against PM transitions (Tvrtko) * tag 'drm-intel-next-fixes-2018-04-19' of git://anongit.freedesktop.org/drm/drm-intel: drm/i915/audio: Fix audio detection issue on GLK drm/i915: Call i915_perf_fini() on init_hw error unwind drm/i915/bios: filter out invalid DDC pins from VBT child devices drm/i915/pmu: Inspect runtime PM state more carefully while estimating RC6 drm/i915: Do no use kfree() to free a kmem_cache_alloc() return value drm/i915/execlists: Clear user-active flag on preemption completion drm/i915/gvt: Add drm_format_mod update drm/i915/gvt: Disable primary/sprite/cursor plane at virtual display initialization drm/i915/gvt: Delete redundant error message in fb_decode.c drm/i915/gvt: Cancel dma map when resetting ggtt entries drm/i915/gvt: Missed to cancel dma map for ggtt entries drm/i915/gvt: Make MI_USER_INTERRUPT nop in cmd parser drm/i915/gvt: Mark expected switch fall-through in handle_g2v_notification drm/i915/gvt: throw error on unhandled vfio ioctls
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git://anongit.freedesktop.org/drm/drm-miscDave Airlie authored
drm-misc-fixes: stable: vc4: Fix memory leak during BO teardown (Daniel) dp: Add i2c retry for LSPCON adapters (Imre) hdcp: Fix device count mask (Ramalingam) Cc: Daniel J Blueman <daniel@quora.org Cc: Imre Deak <imre.deak@intel.com> Cc: Ramalingam C <ramalingam.c@intel.com> * tag 'drm-misc-fixes-2018-04-18-1' of git://anongit.freedesktop.org/drm/drm-misc: drm/i915: Fix LSPCON TMDS output buffer enabling from low-power state drm: Fix HDCP downstream dev count read drm/vc4: Fix memory leak during BO teardown
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French: "Various SMB3/CIFS fixes. There are three more security related fixes in progress that are not included in this set but they are still being tested and reviewed, so sending this unrelated set of smaller fixes now" * tag '4.17-rc1-SMB3-CIFS' of git://git.samba.org/sfrench/cifs-2.6: CIFS: fix typo in cifs_dbg cifs: do not allow creating sockets except with SMB1 posix exensions cifs: smbd: Dump SMB packet when configured cifs: smbd: Check for iov length on sending the last iov fs: cifs: Adding new return type vm_fault_t cifs: smb2ops: Fix NULL check in smb2_query_symlink
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs fixes from David Sterba: "This contains a few fixups to the qgroup patches that were merged this dev cycle, unaligned access fix, blockgroup removal corner case fix and a small debugging output tweak" * tag 'for-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: print-tree: debugging output enhancement btrfs: Fix race condition between delayed refs and blockgroup removal btrfs: fix unaligned access in readdir btrfs: Fix wrong btrfs_delalloc_release_extents parameter btrfs: delayed-inode: Remove wrong qgroup meta reservation calls btrfs: qgroup: Use independent and accurate per inode qgroup rsv btrfs: qgroup: Commit transaction in advance to reduce early EDQUOT
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A small set of fixes for x86: - Prevent X2APIC ID 0xFFFFFFFF from being treated as valid, which causes the possible CPU count to be wrong. - Prevent 32bit truncation in calc_hpet_ref() which causes the TSC calibration to fail - Fix the page table setup for temporary text mappings in the resume code which causes resume failures - Make the page table dump code handle HIGHPTE correctly instead of oopsing - Support for topologies where NUMA nodes share an LLC to prevent a invalid topology warning and further malfunction on such systems. - Remove the now unused pci-nommu code - Remove stale function declarations" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/power/64: Fix page-table setup for temporary text mapping x86/mm: Prevent kernel Oops in PTDUMP code with HIGHPTE=y x86,sched: Allow topologies where NUMA nodes share an LLC x86/processor: Remove two unused function declarations x86/acpi: Prevent X2APIC id 0xffffffff from being accounted x86/tsc: Prevent 32bit truncation in calc_hpet_ref() x86: Remove pci-nommu.c -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Thomas Gleixner: "A small set of timer fixes: - Evaluate the -ETIME condition correctly in the imx tpm driver - Fix the evaluation order of a condition in posix cpu timers - Use pr_cont() in the clockevents code to prevent ugly message splitting - Remove __current_kernel_time() which is now unused to prevent that new users show up. - Remove a stale forward declaration" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/imx-tpm: Correct -ETIME return condition check posix-cpu-timers: Ensure set_process_cpu_timer is always evaluated timekeeping: Remove __current_kernel_time() timers: Remove stale struct tvec_base forward declaration clockevents: Fix kernel messages split across multiple lines -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: "A larger set of updates for perf. Kernel: - Handle the SBOX uncore monitoring correctly on Broadwell CPUs which do not have SBOX. - Store context switch out type in PERF_RECORD_SWITCH[_CPU_WIDE]. The percentage of preempting and non-preempting context switches help understanding the nature of workloads (CPU or IO bound) that are running on a machine. This adds the kernel facility and userspace changes needed to show this information in 'perf script' and 'perf report -D' (Alexey Budankov) - Remove a WARN_ON() in the trace/kprobes code which is pointless because the return error code is already telling the caller what's wrong. - Revert a fugly workaround for clang BPF targets. - Fix sample_max_stack maximum check and do not proceed when an error has been detect, return them to avoid misidentifying errors (Jiri Olsa) - Add SPDX idenitifiers and get rid of GPL boilderplate. Tools: - Synchronize kernel ABI headers, v4.17-rc1 (Ingo Molnar) - Support MAP_FIXED_NOREPLACE, noticed when updating the tools/include/ copies (Arnaldo Carvalho de Melo) - Add '\n' at the end of parse-options error messages (Ravi Bangoria) - Add s390 support for detailed/verbose PMU event description (Thomas Richter) - perf annotate fixes and improvements: * Allow showing offsets in more than just jump targets, use the new 'O' hotkey in the TUI, config ~/.perfconfig annotate.offset_level for it and for --stdio2 (Arnaldo Carvalho de Melo) * Use the resolved variable names from objdump disassembled lines to make them more compact, just like was already done for some instructions, like "mov", this eventually will be done more generally, but lets now add some more to the existing mechanism (Arnaldo Carvalho de Melo) - perf record fixes: * Change warning for missing topology sysfs entry to debug, as not all architectures have those files, s390 being one of those (Thomas Richter) * Remove old error messages about things that unlikely to be the root cause in modern systems (Andi Kleen) - perf sched fixes: * Fix -g/--call-graph documentation (Takuya Yamamoto) - perf stat: * Enable 1ms interval for printing event counters values in (Alexey Budankov) - perf test fixes: * Run dwarf unwind on arm32 (Kim Phillips) * Remove unused ptrace.h include from LLVM test, sidesteping older clang's lack of support for some asm constructs (Arnaldo Carvalho de Melo) * Fixup BPF test using epoll_pwait syscall function probe, to cope with the syscall routines renames performed in this development cycle (Arnaldo Carvalho de Melo) - perf version fixes: * Do not print info about HAVE_LIBAUDIT_SUPPORT in 'perf version --build-options' when HAVE_SYSCALL_TABLE_SUPPORT is true, as libaudit won't be used in that case, print info about syscall_table support instead (Jin Yao) - Build system fixes: * Use HAVE_..._SUPPORT used consistently (Jin Yao) * Restore READ_ONCE() C++ compatibility in tools/include (Mark Rutland) * Give hints about package names needed to build jvmti (Arnaldo Carvalho de Melo)" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits) perf/x86/intel/uncore: Fix SBOX support for Broadwell CPUs perf/x86/intel/uncore: Revert "Remove SBOX support for Broadwell server" coresight: Move to SPDX identifier perf test BPF: Fixup BPF test using epoll_pwait syscall function probe perf tests mmap: Show which tracepoint is failing perf tools: Add '\n' at the end of parse-options error messages perf record: Remove suggestion to enable APIC perf record: Remove misleading error suggestion perf hists browser: Clarify top/report browser help perf mem: Allow all record/report options perf trace: Support MAP_FIXED_NOREPLACE perf: Remove superfluous allocation error check perf: Fix sample_max_stack maximum check perf: Return proper values for user stack errors perf list: Add s390 support for detailed/verbose PMU event description perf script: Extend misc field decoding with switch out event type perf report: Extend raw dump (-D) out with switch out event type perf/core: Store context switch out type in PERF_RECORD_SWITCH[_CPU_WIDE] tools/headers: Synchronize kernel ABI headers, v4.17-rc1 trace_kprobe: Remove warning message "Could not insert probe at..." ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool fix from Thomas Gleixner: "A single fix for objtool so it uses the host C and LD flags and not the target ones" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Support HOSTCFLAGS and HOSTLDFLAGS
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- Apr 22, 2018
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/randomLinus Torvalds authored
Pull /dev/random fixes from Ted Ts'o: "Fix some bugs in the /dev/random driver which causes getrandom(2) to unblock earlier than designed. Thanks to Jann Horn from Google's Project Zero for pointing this out to me" * tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: random: add new ioctl RNDRESEEDCRNG random: crng_reseed() should lock the crng instance that it is modifying random: set up the NUMA crng instances after the CRNG is fully initialized random: use a different mixing algorithm for add_device_randomness() random: fix crng_ready() test
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: "A regression fix, new unit test infrastructure and a build fix: - Regression fix addressing support for the new NVDIMM label storage area access commands (_LSI, _LSR, and _LSW). The Intel specific version of these commands communicated the "Device Locked" status on the label-storage-information command. However, these new commands (standardized in ACPI 6.2) communicate the "Device Locked" status on the label-storage-read command, and the driver was missing the indication. Reading from locked persistent memory is similar to reading unmapped PCI memory space, returns all 1's. - Unit test infrastructure is added to regression test the "Device Locked" detection failure. - A build fix is included to allow the "of_pmem" driver to be built as a module and translate an Open Firmware described device to its local numa node" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: MAINTAINERS: Add backup maintainers for libnvdimm and DAX device-dax: allow MAP_SYNC to succeed Revert "libnvdimm, of_pmem: workaround OF_NUMA=n build error" libnvdimm, of_pmem: use dev_to_node() instead of of_node_to_nid() tools/testing/nvdimm: enable labels for nfit_test.1 dimms tools/testing/nvdimm: fix missing newline in nfit_test_dimm 'handle' attribute tools/testing/nvdimm: support nfit_test_dimm attributes under nfit_test.1 tools/testing/nvdimm: allow custom error code injection libnvdimm, dimm: handle EACCES failures from label reads -
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "A few small fixes: - a fix for the NULL-dereference in rawmidi compat ioctls, triggered by fuzzer - HD-audio Realtek codec quirks, a VIA controller fixup - a long-standing bug fix in LINE6 MIDI" * tag 'sound-4.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: rawmidi: Fix missing input substream checks in compat ioctls ALSA: hda/realtek - adjust the location of one mic ALSA: hda/realtek - set PINCFG_HEADSET_MIC to parse_flags ALSA: hda - New VIA controller suppor no-snoop path ALSA: line6: Use correct endpoint type for midi output -
git://www.linux-watchdog.org/linux-watchdogLinus Torvalds authored
Pull watchdog fixes from Wim Van Sebroeck: - fall-through fixes - MAINTAINER change for hpwdt - renesas-wdt: Add support for WDIOF_CARDRESET - aspeed: set bootstatus during probe * tag 'linux-watchdog-4.17-rc2' of git://www.linux-watchdog.org/linux-watchdog: aspeed: watchdog: Set bootstatus during probe watchdog: renesas-wdt: Add support for WDIOF_CARDRESET watchdog: wafer5823wdt: Mark expected switch fall-through watchdog: w83977f_wdt: Mark expected switch fall-through watchdog: sch311x_wdt: Mark expected switch fall-through watchdog: hpwdt: change maintainer.
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Linus Torvalds authored
Merge tag 'linux-kselftest-4.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fix from Shuah Khan: "A fix from Michael Ellerman to not run dnotify_test by default to prevent Kselftest running forever" * tag 'linux-kselftest-4.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/filesystems: Don't run dnotify_test by default
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Catalin Marinas: - kasan: avoid pfn_to_nid() before the page array is initialised - Fix typo causing the "upgrade" of known signals to SIGKILL * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: signal: don't force known signals to SIGKILL arm64: kasan: avoid pfn_to_nid() before page array is initialized
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- Apr 21, 2018
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Linus Torvalds authored
Merge misc fixes from Andrew Morton: - "fork: unconditionally clear stack on fork" is a non-bugfix which got lost during the merge window - performance concerns appear to have been adequately addressed. - and a bunch of fixes * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm/filemap.c: fix NULL pointer in page_cache_tree_insert() mm: memcg: add __GFP_NOWARN in __memcg_schedule_kmem_cache_create() fs, elf: don't complain MAP_FIXED_NOREPLACE unless -EEXIST error kexec_file: do not add extra alignment to efi memmap proc: fix /proc/loadavg regression proc: revalidate kernel thread inodes to root:root autofs: mount point create should honour passed in mode MAINTAINERS: add personal addresses for Sascha and Uwe kasan: add no_sanitize attribute for clang builds rapidio: fix rio_dma_transfer error handling mm: enable thp migration for shmem thp writeback: safer lock nesting mm, pagemap: fix swap offset value for PMD migration entry mm: fix do_pages_move status handling fork: unconditionally clear stack on fork
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Ingo Molnar authored
Merge tag 'perf-urgent-for-mingo-4.17-20180420' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes and improvements from Arnaldo Carvalho de Melo: - Store context switch out type in PERF_RECORD_SWITCH[_CPU_WIDE]. The percentage of preempting and non-preempting context switches help understanding the nature of workloads (CPU or IO bound) that are running on a machine. This adds the kernel facility and userspace changes needed to show this information in 'perf script' and 'perf report -D' (Alexey Budankov) - Remove old error messages about things that unlikely to be the root cause in modern systems (Andi Kleen) - Synchronize kernel ABI headers, v4.17-rc1 (Ingo Molnar) - Support MAP_FIXED_NOREPLACE, noticed when updating the tools/include/ copies (Arnaldo Carvalho de Melo) - Fixup BPF test using epoll_pwait syscall function probe, to cope with the syscall routines renames performed in this development cycle (Arnaldo Carvalho de Melo) - Fix sample_max_stack maximum check and do not proceed when an error has been detect, return them to avoid misidentifying errors (Jiri Olsa) - Add '\n' at the end of parse-options error messages (Ravi Bangoria) - Add s390 support for detailed/verbose PMU event description (Thomas Richter) Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Matthew Wilcox authored
f2fs specifies the __GFP_ZERO flag for allocating some of its pages. Unfortunately, the page cache also uses the mapping's GFP flags for allocating radix tree nodes. It always masked off the __GFP_HIGHMEM flag, and masks off __GFP_ZERO in some paths, but not all. That causes radix tree nodes to be allocated with a NULL list_head, which causes backtraces like: __list_del_entry+0x30/0xd0 list_lru_del+0xac/0x1ac page_cache_tree_insert+0xd8/0x110 The __GFP_DMA and __GFP_DMA32 flags would also be able to sneak through if they are ever used. Fix them all by using GFP_RECLAIM_MASK at the innermost location, and remove it from earlier in the callchain. Link: http://lkml.kernel.org/r/20180411060320.14458-2-willy@infradead.org Fixes: 449dd698 ("mm: keep page cache radix tree nodes in check") Signed-off-by:
Chris Fries <cfries@google.com> Debugged-by:
Minchan Kim <minchan@kernel.org> Acked-by:
Johannes Weiner <hannes@cmpxchg.org> Acked-by:
Michal Hocko <mhocko@suse.com> Reviewed-by:
Jan Kara <jack@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Minchan Kim authored
If there is heavy memory pressure, page allocation with __GFP_NOWAIT fails easily although it's order-0 request. I got below warning 9 times for normal boot. <snip >: page allocation failure: order:0, mode:0x2200000(GFP_NOWAIT|__GFP_NOTRACK) .. snip .. Call trace: dump_backtrace+0x0/0x4 dump_stack+0xa4/0xc0 warn_alloc+0xd4/0x15c __alloc_pages_nodemask+0xf88/0x10fc alloc_slab_page+0x40/0x18c new_slab+0x2b8/0x2e0 ___slab_alloc+0x25c/0x464 __kmalloc+0x394/0x498 memcg_kmem_get_cache+0x114/0x2b8 kmem_cache_alloc+0x98/0x3e8 mmap_region+0x3bc/0x8c0 do_mmap+0x40c/0x43c vm_mmap_pgoff+0x15c/0x1e4 sys_mmap+0xb0/0xc8 el0_svc_naked+0x24/0x28 Mem-Info: active_anon:17124 inactive_anon:193 isolated_anon:0 active_file:7898 inactive_file:712955 isolated_file:55 unevictable:0 dirty:27 writeback:18 unstable:0 slab_reclaimable:12250 slab_unreclaimable:23334 mapped:19310 shmem:212 pagetables:816 bounce:0 free:36561 free_pcp:1205 free_cma:35615 Node 0 active_anon:68496kB inactive_anon:772kB active_file:31592kB inactive_file:2851820kB unevictable:0kB isolated(anon):0kB isolated(file):220kB mapped:77240kB dirty:108kB writeback:72kB shmem:848kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no DMA free:142188kB min:3056kB low:3820kB high:4584kB active_anon:10052kB inactive_anon:12kB active_file:312kB inactive_file:1412620kB unevictable:0kB writepending:0kB present:1781412kB managed:1604728kB mlocked:0kB slab_reclaimable:3592kB slab_unreclaimable:876kB kernel_stack:400kB pagetables:52kB bounce:0kB free_pcp:1436kB local_pcp:124kB free_cma:142492kB lowmem_reserve[]: 0 1842 1842 Normal free:4056kB min:4172kB low:5212kB high:6252kB active_anon:58376kB inactive_anon:760kB active_file:31348kB inactive_file:1439040kB unevictable:0kB writepending:180kB present:2000636kB managed:1923688kB mlocked:0kB slab_reclaimable:45408kB slab_unreclaimable:92460kB kernel_stack:9680kB pagetables:3212kB bounce:0kB free_pcp:3392kB local_pcp:688kB free_cma:0kB lowmem_reserve[]: 0 0 0 DMA: 0*4kB 0*8kB 1*16kB (C) 0*32kB 0*64kB 0*128kB 1*256kB (C) 1*512kB (C) 0*1024kB 1*2048kB (C) 34*4096kB (C) = 142096kB Normal: 228*4kB (UMEH) 172*8kB (UMH) 23*16kB (UH) 24*32kB (H) 5*64kB (H) 1*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3872kB 721350 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 945512 pages RAM 0 pages HighMem/MovableOnly 63408 pages reserved 51200 pages cma reserved __memcg_schedule_kmem_cache_create() tries to create a shadow slab cache and the worker allocation failure is not really critical because we will retry on the next kmem charge. We might miss some charges but that shouldn't be critical. The excessive allocation failure report is not very helpful. [mhocko@kernel.org: changelog update] Link: http://lkml.kernel.org/r/20180418022912.248417-1-minchan@kernel.org Signed-off-by: -
Tetsuo Handa authored
Commit 4ed28639 ("fs, elf: drop MAP_FIXED usage from elf_map") is printing spurious messages under memory pressure due to map_addr == -ENOMEM. 9794 (a.out): Uhuuh, elf segment at 00007f2e34738000(fffffffffffffff4) requested but the memory is mapped already 14104 (a.out): Uhuuh, elf segment at 00007f34fd76c000(fffffffffffffff4) requested but the memory is mapped already 16843 (a.out): Uhuuh, elf segment at 00007f930ecc7000(fffffffffffffff4) requested but the memory is mapped already Complain only if -EEXIST, and use %px for printing the address. Link: http://lkml.kernel.org/r/201804182307.FAC17665.SFMOFJVFtHOLOQ@I-love.SAKURA.ne.jp Fixes: 4ed28639 ("fs, elf: drop MAP_FIXED usage from elf_map") is Signed-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by:
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