1. 02 Oct, 2018 7 commits
    • Ingo Molnar's avatar
      Merge branch 'x86/cache' into perf/core, to resolve conflicts · a4c9f265
      Ingo Molnar authored
      Avoid conflict with upcoming perf/core patches, merge in the RDT perf work.
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      a4c9f265
    • Ingo Molnar's avatar
      97e831e1
    • Natarajan, Janakarajan's avatar
      perf/x86/amd/uncore: Set ThreadMask and SliceMask for L3 Cache perf events · d7cbbe49
      Natarajan, Janakarajan authored
      In Family 17h, some L3 Cache Performance events require the ThreadMask
      and SliceMask to be set. For other events, these fields do not affect
      the count either way.
      
      Set ThreadMask and SliceMask to 0xFF and 0xF respectively.
      Signed-off-by: default avatarJanakarajan Natarajan <Janakarajan.Natarajan@amd.com>
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: H . Peter Anvin <hpa@zytor.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Suravee <Suravee.Suthikulpanit@amd.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vince Weaver <vincent.weaver@maine.edu>
      Link: http://lkml.kernel.org/r/Message-ID:
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      d7cbbe49
    • Kan Liang's avatar
      perf/x86/intel/uncore: Fix PCI BDF address of M3UPI on SKX · 9d92cfea
      Kan Liang authored
      The counters on M3UPI Link 0 and Link 3 don't count properly, and writing
      0 to these counters may causes system crash on some machines.
      
      The PCI BDF addresses of the M3UPI in the current code are incorrect.
      
      The correct addresses should be:
      
        D18:F1	0x204D
        D18:F2	0x204E
        D18:F5	0x204D
      Signed-off-by: default avatarKan Liang <kan.liang@linux.intel.com>
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vince Weaver <vincent.weaver@maine.edu>
      Fixes: cd34cd97 ("perf/x86/intel/uncore: Add Skylake server uncore support")
      Link: http://lkml.kernel.org/r/1537538826-55489-1-git-send-email-kan.liang@linux.intel.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      9d92cfea
    • Jiri Olsa's avatar
      perf/ring_buffer: Prevent concurent ring buffer access · cd6fb677
      Jiri Olsa authored
      Some of the scheduling tracepoints allow the perf_tp_event
      code to write to ring buffer under different cpu than the
      code is running on.
      
      This results in corrupted ring buffer data demonstrated in
      following perf commands:
      
        # perf record -e 'sched:sched_switch,sched:sched_wakeup' perf bench sched messaging
        # Running 'sched/messaging' benchmark:
        # 20 sender and receiver processes per group
        # 10 groups == 400 processes run
      
             Total time: 0.383 [sec]
        [ perf record: Woken up 8 times to write data ]
        0x42b890 [0]: failed to process type: -1765585640
        [ perf record: Captured and wrote 4.825 MB perf.data (29669 samples) ]
      
        # perf report --stdio
        0x42b890 [0]: failed to process type: -1765585640
      
      The reason for the corruption are some of the scheduling tracepoints,
      that have __perf_task dfined and thus allow to store data to another
      cpu ring buffer:
      
        sched_waking
        sched_wakeup
        sched_wakeup_new
        sched_stat_wait
        sched_stat_sleep
        sched_stat_iowait
        sched_stat_blocked
      
      The perf_tp_event function first store samples for current cpu
      related events defined for tracepoint:
      
          hlist_for_each_entry_rcu(event, head, hlist_entry)
            perf_swevent_event(event, count, &data, regs);
      
      And then iterates events of the 'task' and store the sample
      for any task's event that passes tracepoint checks:
      
        ctx = rcu_dereference(task->perf_event_ctxp[perf_sw_context]);
      
        list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
          if (event->attr.type != PERF_TYPE_TRACEPOINT)
            continue;
          if (event->attr.config != entry->type)
            continue;
      
          perf_swevent_event(event, count, &data, regs);
        }
      
      Above code can race with same code running on another cpu,
      ending up with 2 cpus trying to store under the same ring
      buffer, which is specifically not allowed.
      
      This patch prevents the problem, by allowing only events with the same
      current cpu to receive the event.
      
      NOTE: this requires the use of (per-task-)per-cpu buffers for this
      feature to work; perf-record does this.
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      [peterz: small edits to Changelog]
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Andrew Vagin <avagin@openvz.org>
      Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vince Weaver <vincent.weaver@maine.edu>
      Fixes: e6dab5ff ("perf/trace: Add ability to set a target task for events")
      Link: http://lkml.kernel.org/r/20180923161343.GB15054@kravaSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      cd6fb677
    • Masayoshi Mizuma's avatar
      perf/x86/intel/uncore: Use boot_cpu_data.phys_proc_id instead of hardcorded physical package ID 0 · 6265adb9
      Masayoshi Mizuma authored
      Physical package id 0 doesn't always exist, we should use
      boot_cpu_data.phys_proc_id here.
      Signed-off-by: default avatarMasayoshi Mizuma <m.mizuma@jp.fujitsu.com>
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Masayoshi Mizuma <msys.mizuma@gmail.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vince Weaver <vincent.weaver@maine.edu>
      Link: http://lkml.kernel.org/r/20180910144750.6782-1-msys.mizuma@gmail.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      6265adb9
    • Peter Zijlstra's avatar
      perf/core: Fix perf_pmu_unregister() locking · a9f97721
      Peter Zijlstra authored
      When we unregister a PMU, we fail to serialize the @pmu_idr properly.
      Fix that by doing the entire thing under pmu_lock.
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Vince Weaver <vincent.weaver@maine.edu>
      Fixes: 2e80a82a ("perf: Dynamic pmu types")
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      a9f97721
  2. 29 Sep, 2018 12 commits
    • Greg Kroah-Hartman's avatar
      Merge tag 'for-linus-20180929' of git://git.kernel.dk/linux-block · 291d0e5d
      Greg Kroah-Hartman authored
      Jens writes:
        "Block fixes for 4.19-rc6
      
         A set of fixes that should go into this release. This pull request
         contains:
      
         - A fix (hopefully) for the persistent grants for xen-blkfront. A
           previous fix from this series wasn't complete, hence reverted, and
           this one should hopefully be it. (Boris Ostrovsky)
      
         - Fix for an elevator drain warning with SMR devices, which is
           triggered when you switch schedulers (Damien)
      
         - bcache deadlock fix (Guoju Fang)
      
         - Fix for the block unplug tracepoint, which has had the
           timer/explicit flag reverted since 4.11 (Ilya)
      
         - Fix a regression in this series where the blk-mq timeout hook is
           invoked with the RCU read lock held, hence preventing it from
           blocking (Keith)
      
         - NVMe pull from Christoph, with a single multipath fix (Susobhan Dey)"
      
      * tag 'for-linus-20180929' of git://git.kernel.dk/linux-block:
        xen/blkfront: correct purging of persistent grants
        Revert "xen/blkfront: When purging persistent grants, keep them in the buffer"
        blk-mq: I/O and timer unplugs are inverted in blktrace
        bcache: add separate workqueue for journal_write to avoid deadlock
        xen/blkfront: When purging persistent grants, keep them in the buffer
        block: fix deadline elevator drain for zoned block devices
        blk-mq: Allow blocking queue tag iter callbacks
        nvme: properly propagate errors in nvme_mpath_init
      291d0e5d
    • Greg Kroah-Hartman's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · e7541773
      Greg Kroah-Hartman authored
      Thomas writes:
        "A single fix for the AMD memory encryption boot code so it does not
         read random garbage instead of the cached encryption bit when a kexec
         kernel is allocated above the 32bit address limit."
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/boot: Fix kexec booting failure in the SEV bit detection code
      e7541773
    • Greg Kroah-Hartman's avatar
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · e1ce697d
      Greg Kroah-Hartman authored
      Thomas writes:
        "Three small fixes for clocksource drivers:
         - Proper error handling in the Atmel PIT driver
         - Add CLOCK_SOURCE_SUSPEND_NONSTOP for TI SoCs so suspend works again
         - Fix the next event function for Facebook Backpack-CMM BMC chips so
           usleep(100) doesnt sleep several milliseconds"
      
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        clocksource/drivers/timer-atmel-pit: Properly handle error cases
        clocksource/drivers/fttmr010: Fix set_next_event handler
        clocksource/drivers/ti-32k: Add CLOCK_SOURCE_SUSPEND_NONSTOP flag for non-am43 SoCs
      e1ce697d
    • Greg Kroah-Hartman's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · af17b3aa
      Greg Kroah-Hartman authored
      Thomas writes:
        "A single fix for a missing sanity check when a pinned event is tried
        to be read on the wrong CPU due to a legit event scheduling failure."
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf/core: Add sanity check to deal with pinned event failure
      af17b3aa
    • Greg Kroah-Hartman's avatar
      Merge tag 'pm-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 82ec752c
      Greg Kroah-Hartman authored
      Rafael writes:
        "Power management fix for 4.19-rc6
      
         Fix incorrect __init and __exit annotations in the Qualcomm
         Kryo cpufreq driver (Nathan Chancellor)."
      
      * tag 'pm-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        cpufreq: qcom-kryo: Fix section annotations
      82ec752c
    • Nathan Chancellor's avatar
      cpufreq: qcom-kryo: Fix section annotations · d51aea13
      Nathan Chancellor authored
      There is currently a warning when building the Kryo cpufreq driver into
      the kernel image:
      
      WARNING: vmlinux.o(.text+0x8aa424): Section mismatch in reference from
      the function qcom_cpufreq_kryo_probe() to the function
      .init.text:qcom_cpufreq_kryo_get_msm_id()
      The function qcom_cpufreq_kryo_probe() references
      the function __init qcom_cpufreq_kryo_get_msm_id().
      This is often because qcom_cpufreq_kryo_probe lacks a __init
      annotation or the annotation of qcom_cpufreq_kryo_get_msm_id is wrong.
      
      Remove the '__init' annotation from qcom_cpufreq_kryo_get_msm_id
      so that there is no more mismatch warning.
      
      Additionally, Nick noticed that the remove function was marked as
      '__init' when it should really be marked as '__exit'.
      
      Fixes: 46e2856b (cpufreq: Add Kryo CPU scaling driver)
      Fixes: 5ad7346b (cpufreq: kryo: Add module remove and exit)
      Reported-by: default avatarNick Desaulniers <ndesaulniers@google.com>
      Signed-off-by: default avatarNathan Chancellor <natechancellor@gmail.com>
      Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
      Cc: 4.18+ <stable@vger.kernel.org> # 4.18+
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      d51aea13
    • Greg Kroah-Hartman's avatar
      Merge tag 'dma-mapping-4.19-3' of git://git.infradead.org/users/hch/dma-mapping · 7a6878bb
      Greg Kroah-Hartman authored
      Christoph writes:
        "dma mapping fix for 4.19-rc6
      
         fix a missing Kconfig symbol for commits introduced in 4.19-rc"
      
      * tag 'dma-mapping-4.19-3' of git://git.infradead.org/users/hch/dma-mapping:
        dma-mapping: add the missing ARCH_HAS_SYNC_DMA_FOR_CPU_ALL declaration
      7a6878bb
    • Greg Kroah-Hartman's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · e704966c
      Greg Kroah-Hartman authored
      Dmitry writes:
        "Input updates for v4.19-rc5
      
         Just a few driver fixes"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: uinput - allow for max == min during input_absinfo validation
        Input: elantech - enable middle button of touchpad on ThinkPad P72
        Input: atakbd - fix Atari CapsLock behaviour
        Input: atakbd - fix Atari keymap
        Input: egalax_ts - add system wakeup support
        Input: gpio-keys - fix a documentation index issue
      e704966c
    • Greg Kroah-Hartman's avatar
      Merge tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi · 2f19e7a7
      Greg Kroah-Hartman authored
      Mark writes:
        "spi: Fixes for v4.19
      
         Quite a few fixes for the Renesas drivers in here, plus a fix for the
         Tegra driver and some documentation fixes for the recently added
         spi-mem code.  The Tegra fix is relatively large but fairly
         straightforward and mechanical, it runs on probe so it's been
         reasonably well covered in -next testing."
      
      * tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
        spi: spi-mem: Move the DMA-able constraint doc to the kerneldoc header
        spi: spi-mem: Add missing description for data.nbytes field
        spi: rspi: Fix interrupted DMA transfers
        spi: rspi: Fix invalid SPI use during system suspend
        spi: sh-msiof: Fix handling of write value for SISTR register
        spi: sh-msiof: Fix invalid SPI use during system suspend
        spi: gpio: Fix copy-and-paste error
        spi: tegra20-slink: explicitly enable/disable clock
      2f19e7a7
    • Greg Kroah-Hartman's avatar
      Merge tag 'regulator-v4.19-rc5' of... · 8f056611
      Greg Kroah-Hartman authored
      Merge tag 'regulator-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
      
      Mark writes:
        "regulator: Fixes for 4.19
      
         A collection of fairly minor bug fixes here, a couple of driver
         specific ones plus two core fixes.  There's one fix for the new
         suspend state code which fixes some confusion with constant values
         that are supposed to indicate noop operation and another fixing a
         race condition with the creation of sysfs files on new regulators."
      
      * tag 'regulator-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
        regulator: fix crash caused by null driver data
        regulator: Fix 'do-nothing' value for regulators without suspend state
        regulator: da9063: fix DT probing with constraints
        regulator: bd71837: Disable voltage monitoring for LDO3/4
      8f056611
    • Greg Kroah-Hartman's avatar
      Merge tag 'powerpc-4.19-3' of https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · f005de01
      Greg Kroah-Hartman authored
      Michael writes:
        "powerpc fixes for 4.19 #3
      
         A reasonably big batch of fixes due to me being away for a few weeks.
      
         A fix for the TM emulation support on Power9, which could result in
         corrupting the guest r11 when running under KVM.
      
         Two fixes to the TM code which could lead to userspace GPR corruption
         if we take an SLB miss at exactly the wrong time.
      
         Our dynamic patching code had a bug that meant we could patch freed
         __init text, which could lead to corrupting userspace memory.
      
         csum_ipv6_magic() didn't work on little endian platforms since we
         optimised it recently.
      
         A fix for an endian bug when reading a device tree property telling
         us how many storage keys the machine has available.
      
         Fix a crash seen on some configurations of PowerVM when migrating the
         partition from one machine to another.
      
         A fix for a regression in the setup of our CPU to NUMA node mapping
         in KVM guests.
      
         A fix to our selftest Makefiles to make them work since a recent
         change to the shared Makefile logic."
      
      * tag 'powerpc-4.19-3' of https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        selftests/powerpc: Fix Makefiles for headers_install change
        powerpc/numa: Use associativity if VPHN hcall is successful
        powerpc/tm: Avoid possible userspace r1 corruption on reclaim
        powerpc/tm: Fix userspace r13 corruption
        powerpc/pseries: Fix unitialized timer reset on migration
        powerpc/pkeys: Fix reading of ibm, processor-storage-keys property
        powerpc: fix csum_ipv6_magic() on little endian platforms
        powerpc/powernv/ioda2: Reduce upper limit for DMA window size (again)
        powerpc: Avoid code patching freed init sections
        KVM: PPC: Book3S HV: Fix guest r11 corruption with POWER9 TM workarounds
      f005de01
    • Greg Kroah-Hartman's avatar
      Merge tag 'pinctrl-v4.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 900915f9
      Greg Kroah-Hartman authored
      Linus writes:
        "Pin control fixes for v4.19:
         - Fixes to x86 hardware:
         - AMD interrupt debounce issues
         - Faulty Intel cannonlake register offset
         - Revert pin translation IRQ locking"
      
      * tag 'pinctrl-v4.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        Revert "pinctrl: intel: Do pin translation when lock IRQ"
        pinctrl: cannonlake: Fix HOSTSW_OWN register offset of H variant
        pinctrl/amd: poll InterruptEnable bits in amd_gpio_irq_set_type
      900915f9
  3. 28 Sep, 2018 12 commits
  4. 27 Sep, 2018 9 commits