1. 01 Nov, 2018 40 commits
    • Philippe Gerum's avatar
      ipipe: tick: cap timer_set op to device supported max · 78580ae1
      Philippe Gerum authored
      At this chance, switch the min_delay_tick value to unsigned long to
      match the corresponding clockevent definition.
      78580ae1
    • Philippe Gerum's avatar
      ipipe: tick: out-of-band devices require GENERIC_CLOCKEVENTS · a1d64704
      Philippe Gerum authored
      Drop the legacy support for architectures not enabling the generic
      clock event framework, which would only provide periodic timing.
      
      We don't support any of those archs, and there is no point in running
      a Xenomai co-kernel on a hardware not capable of handling oneshot
      timing requests.
      a1d64704
    • Philippe Gerum's avatar
      thermal/drivers/hisi: drop spurious enable of auto-enable irq · 82d07de0
      Philippe Gerum authored
      Fixes the kernel warning below due to the second enable sneaking in
      between a thermal IRQ is handled by the hard interrupt handler - which
      disables it - and the IRQ thread eventually attempts to re-enable the
      interrupt - which was already enabled.
      
      [    0.405830] Unbalanced enable for IRQ 44
      [    0.406029] ------------[ cut here ]------------
      [    0.406035] WARNING: CPU: 3 PID: 1285 at kernel/irq/manage.c:525 __enable_irq+0x60/0x70
      [    0.406044] Modules linked in:
      [    0.406055] CPU: 3 PID: 1285 Comm: irq/44-hisi_the Not tainted 4.14.62-ipipe #2
      [    0.406060] Hardware name: HiKey Development Board (DT)
      [    0.406065] I-pipe domain: Linux
      [    0.406073] task: ffff8000336b0000 task.stack: ffff00000b9e0000
      [    0.406078] PC is at __enable_irq+0x60/0x70
      [    0.406083] LR is at __enable_irq+0x60/0x70
      [    0.406088] pc : [<ffff000008124d58>] lr : [<ffff000008124d58>] pstate: 60000045
      [    0.406093] sp : ffff00000b9e3c60
      [    0.406098] x29: ffff00000b9e3c60 x28: 0000000000000000
      [    0.406108] x27: ffff00000805ba40 x26: ffff8000336b0000
      [    0.406118] x25: ffff000008124000 x24: ffff00000b9e3d7c
      [    0.406128] x23: 0000000000000002 x22: ffff800033f39e88
      [    0.406138] x21: 000000000000bc40 x20: 000000000000002c
      [    0.406147] x19: ffff800034275200 x18: 0000000000000010
      [    0.406157] x17: 0000000000000007 x16: 0000000000000001
      [    0.406166] x15: ffff0000890014c7 x14: 0000000000000006
      [    0.406175] x13: ffff0000090014d5 x12: ffff000008eb34d0
      [    0.406184] x11: ffff000008eb3000 x10: 0000000005f5e0ff
      [    0.406193] x9 : ffff00000b9e3970 x8 : 0000000000000040
      [    0.406202] x7 : ffff000008e7c000 x6 : 0000000000000040
      [    0.406211] x5 : 0000000000000000 x4 : 0000000000000000
      [    0.406220] x3 : ffffffffffffffff x2 : ffff000008eb34f0
      [    0.406229] x1 : ffff8000336b0000 x0 : 000000000000001c
      [    0.406239] Call trace:
      [    0.406244] Exception stack(0xffff00000b9e3b20 to 0xffff00000b9e3c60)
      [    0.406249] 3b20: 000000000000001c ffff8000336b0000 ffff000008eb34f0 ffffffffffffffff
      [    0.406255] 3b40: 0000000000000000 0000000000000000 0000000000000040 ffff000008e7c000
      [    0.406261] 3b60: 0000000000000040 ffff00000b9e3970 0000000005f5e0ff ffff000008eb3000
      [    0.406267] 3b80: ffff000008eb34d0 ffff0000090014d5 0000000000000006 ffff0000890014c7
      [    0.406272] 3ba0: 0000000000000001 0000000000000007 0000000000000010 ffff800034275200
      [    0.406278] 3bc0: 000000000000002c 000000000000bc40 ffff800033f39e88 0000000000000002
      [    0.406284] 3be0: ffff00000b9e3d7c ffff000008124000 ffff8000336b0000 ffff00000805ba40
      [    0.406289] 3c00: 0000000000000000 ffff00000b9e3c60 ffff000008124d58 ffff00000b9e3c60
      [    0.406295] 3c20: ffff000008124d58 0000000060000045 0000000000000000 ffff800034275200
      [    0.406300] 3c40: ffffffffffffffff ffff000008e7c2b0 ffff00000b9e3c60 ffff000008124d58
      [    0.406306] [<ffff000008124d58>] __enable_irq+0x60/0x70
      [    0.406311] [<ffff000008124d9c>] enable_irq+0x34/0x68
      [    0.406317] [<ffff000008780320>] hisi_thermal_get_temp+0x160/0x198
      [    0.406322] [<ffff00000877b868>] of_thermal_get_temp+0x20/0x30
      [    0.406327] [<ffff00000877b0d4>] thermal_zone_get_temp+0x5c/0x138
      [    0.406332] [<ffff000008778740>] thermal_zone_device_update.part.4+0x20/0xb0
      [    0.406337] [<ffff0000087787f8>] thermal_zone_device_update+0x28/0x38
      [    0.406342] [<ffff00000877fe7c>] hisi_thermal_alarm_irq_thread+0x64/0x80
      [    0.406347] [<ffff0000081244e0>] irq_thread_fn+0x28/0x68
      [    0.406352] [<ffff000008124784>] irq_thread+0x114/0x1b0
      [    0.406357] [<ffff0000080f0384>] kthread+0xfc/0x128
      [    0.406362] [<ffff000008085274>] ret_from_fork+0x14/0x20
      [    0.406366] ---[ end trace 0e6011135c69587a ]---
      82d07de0
    • Philippe Gerum's avatar
      a9077a14
    • Philippe Gerum's avatar
      ftrace: ipipe: rely on fully atomic stop_machine() handler · 92783263
      Philippe Gerum authored
      Now that stop_machine() guarantees fully atomic execution of the stop
      routine via hard interrupt disabling, there is no point in using
      ipipe_critical_enter/exit() for the same purpose in order to patch the
      kernel text.
      92783263
    • Philippe Gerum's avatar
      stop_machine: ipipe: ensure atomic stop-context operations · aed125e2
      Philippe Gerum authored
      stop_machine() guarantees that all online CPUs are spinning
      non-preemptible in a known code location before a subset of them may
      safely run a stop-context function. This service is typically useful
      for live patching the kernel code, or changing global memory mappings,
      so that no activity could run in parallel until the system has
      returned to a stable state after all stop-context operations have
      completed.
      
      When interrupt pipelining is enabled, we have to provide the same
      guarantee by restoring hard interrupt disabling where virtualizing the
      interrupt disable flag would defeat it.
      aed125e2
    • Philippe Gerum's avatar
      lockdep: ipipe: improve detection of out-of-band contexts · 3e6b6433
      Philippe Gerum authored
      trace_hardirqs_on_virt[_caller]() must be invoked instead of
      trace_hardirqs_on[_caller]() from assembly sites before returning from
      an interrupt/fault, so that the virtual IRQ disable state is checked
      for before switching the tracer's logic state to ON.
      
      This is required as an interrupt may be received and handled by the
      pipeline core although not forwarded to the root domain, when
      interrupts are virtually disabled. In such a case, we want to
      reconcile the tracer's logic with the effect of interrupt pipelining.
      3e6b6433
    • Philippe Gerum's avatar
      lockdep: ipipe: make the logic aware of interrupt pipelining · 393ce342
      Philippe Gerum authored
      The lockdep engine will check for the current interrupt state as part
      of the locking validation process, which must encompass:
      
      - the CPU interrupt state
      - the current pipeline domain
      - the virtual interrupt disable flag
      
      so that we can traverse the tracepoints from any context sanely and
      safely.
      
      In addition trace_hardirqs_on_virt_caller() should be called by the
      arch-dependent code when tracking the interrupt state before returning
      to user-space after a kernel entry (exceptions, IRQ). This makes sure
      that the tracking logic only applies to the root domain, and considers
      the virtual disable flag exclusively.
      
      For instance, the kernel may be entered when interrupts are (only)
      virtually disabled for the root domain (i.e. stalled), and we should
      tell the IRQ tracing logic that IRQs are about to be enabled back only
      if the root domain is unstalled before leaving to user-space. In such
      a context, the state of the interrupt bit in the CPU would be
      irrelevant.
      393ce342
    • Greg Gallagher's avatar
      drivers/dove: pmu: ipipe: fix build · 6704d0bd
      Greg Gallagher authored
      6704d0bd
    • Gilles Chanteperdrix's avatar
      drivers/dove: pmu: ipipe: enable interrupt pipelining · efdffb75
      Gilles Chanteperdrix authored
      Fix up the PMU controller driver of the Marvell Dove SoC in order to
      channel interrupts through the interrupt pipeline.
      efdffb75
    • Philippe Gerum's avatar
      pci: dwc: ipipe: enable interrupt pipelining · 7f22e17b
      Philippe Gerum authored
      Fix up Synopsys's PCIE driver in order to channel interrupts through
      the interrupt pipeline.
      7f22e17b
    • Philippe Gerum's avatar
      pci: pcie-altera: ipipe: enable interrupt pipelining · 9f74838e
      Philippe Gerum authored
      Fix up Altera's PCIE driver in order to channel interrupts through the
      interrupt pipeline.
      9f74838e
    • Philippe Gerum's avatar
      pinctrl: sunxi: ipipe: enable interrupt pipelining · f04d3165
      Philippe Gerum authored
      Fix up the pin controller driver of the Allwinner A1x SoCs in order to
      channel interrupts through the interrupt pipeline.
      f04d3165
    • Philippe Gerum's avatar
      pinctrl: bcm2835: ipipe: enable interrupt pipelining · cff26083
      Philippe Gerum authored
      Fix up the pin controller driver of the Broadcom 2835 SoC in order to
      channel interrupts through the interrupt pipeline.
      cff26083
    • Greg Gallagher's avatar
      pinctrl: rockchip: enable interrupt pipelining · 18a52b74
      Greg Gallagher authored
      Fix up the pin controller driver of the Rockchip SoC in order to
      channel interrupts through the interrupt pipeline.
      18a52b74
    • Philippe Gerum's avatar
      serial/xilinx: enable raw console channel · e7c0ba7b
      Philippe Gerum authored
      Enable the serial driver for raw_printk() output.
      e7c0ba7b
    • Philippe Gerum's avatar
      serial/pl011: enable raw console channel · bfc28cd6
      Philippe Gerum authored
      Enable the serial driver for raw_printk() output.
      bfc28cd6
    • Philippe Gerum's avatar
      serial/8250: enable raw console channel · 0a722b5b
      Philippe Gerum authored
      Enable the serial driver for raw_printk() output.
      0a722b5b
    • Philippe Gerum's avatar
      irqchip: gpcv2: enable interrupt pipelining · cfd9f55e
      Philippe Gerum authored
      Fix up Freescale's general power controller driver in order to channel
      interrupts through the interrupt pipeline.
      cfd9f55e
    • Greg Gallagher's avatar
      irqchip: dw-apb-ictl: ipipe: fix build · f0d003de
      Greg Gallagher authored
      f0d003de
    • Greg Gallagher's avatar
      irqchip: brcmstb-l2: enable interrupt pipelining · b5ad7746
      Greg Gallagher authored
      Fix up Broadcom's Generic Set Top Box (Level 2) interrupt controller
      driver in order to channel interrupts through the interrupt pipeline.
      b5ad7746
    • Greg Gallagher's avatar
      irqchip: bcm7120-l2: enable interrupt pipelining · a91859ca
      Greg Gallagher authored
      Fixup Broadcom's BCM7120 (Level 2) interrupt controller driver in
      order to channel interrupts through the interrupt pipeline.
      a91859ca
    • Greg Gallagher's avatar
      irqchip: atmel/aic5: enable interrupt pipelining · 9df71320
      Greg Gallagher authored
      Fix up ATMEL's AIC5 interrupt controller driver in order to channel
      interrupts through the interrupt pipeline.
      9df71320
    • Greg Gallagher's avatar
      c64222b2
    • Gilles Chanteperdrix's avatar
      irqchip: omap-intc: ipipe: enable interrupt pipelining · 7ec28426
      Gilles Chanteperdrix authored
      Fix up the OMAP INTC interrupt controller driver in order to channel
      interrupts through the interrupt pipeline.
      7ec28426
    • Gilles Chanteperdrix's avatar
      irqchip: omap-gpmc: ipipe: enable interrupt pipelining · 9642a32e
      Gilles Chanteperdrix authored
      Fix up the OMAP GPMC interrupt controller driver in order to channel
      interrupts through the interrupt pipeline.
      9642a32e
    • Gilles Chanteperdrix's avatar
      irqchip: vic: ipipe: enable interrupt pipelining · df52ab61
      Gilles Chanteperdrix authored
      Fix up the ARM VIC interrupt controller driver in order to channel
      interrupts through the interrupt pipeline.
      df52ab61
    • Philippe Gerum's avatar
      irqchip: versatile-fpga: ipipe: enable interrupt pipelining · 8827f5cb
      Philippe Gerum authored
      Fix up the Versatile FPGA interrupt controller driver in order to
      channel interrupts through the interrupt pipeline.
      8827f5cb
    • Philippe Gerum's avatar
      irqchip: sunxi-nmi: ipipe: enable interrupt pipelining · a40487c0
      Philippe Gerum authored
      Fix up Allwinner's (A20/A31) IRQ controller driver in order to channel
      interrupts through the interrupt pipeline.
      a40487c0
    • Gilles Chanteperdrix's avatar
      irqchip: gic-v3: ipipe: enable interrupt pipelining · 9a3529a5
      Gilles Chanteperdrix authored
      Fix up the ARM generic interrupt controller (v3) driver in order to
      channel interrupts through the interrupt pipeline.
      9a3529a5
    • Philippe Gerum's avatar
      irqchip: gic: ipipe: enable interrupt pipelining · f64b3af9
      Philippe Gerum authored
      Fix up the ARM generic interrupt controller driver in order to channel
      interrupts through the interrupt pipeline.
      f64b3af9
    • Gilles Chanteperdrix's avatar
      irqchip: dw-apb-ictl: ipipe: enable interrupt pipelining · 1bee0c1d
      Gilles Chanteperdrix authored
      Fix up the Synopsys APB interrupt controller driver in order to
      channel interrupts through the interrupt pipeline.
      1bee0c1d
    • Gilles Chanteperdrix's avatar
      irqchip: crossbar: ipipe: enable interrupt pipelining · 21aeb81a
      Gilles Chanteperdrix authored
      Fix up TI's crossbar interrupt controller driver in order to channel
      interrupts through the interrupt pipeline.
      21aeb81a
    • Philippe Gerum's avatar
      irqchip: bcm2836: ipipe: enable interrupt pipelining · d8e86cbf
      Philippe Gerum authored
      Fix up the interrupt controller driver of the Broadcom 2836 SoC in
      order to channel interrupts through the interrupt pipeline.
      d8e86cbf
    • Philippe Gerum's avatar
      irqchip: bcm2835: ipipe: enable interrupt pipelining · 6407fd57
      Philippe Gerum authored
      Fix up the interrupt controller driver of the Broadcom 2835 SoC in
      order to channel interrupts through the interrupt pipeline.
      6407fd57
    • Gilles Chanteperdrix's avatar
      irqchip: atmel/aic5: ipipe: enable interrupt pipelining · ef1b6624
      Gilles Chanteperdrix authored
      Fix up the Atmel AIC driver in order to channel interrupts through the
      interrupt pipeline.
      ef1b6624
    • Philippe Gerum's avatar
      gpu: ipu-v3: ipipe: enable interrupt pipelining · 955e58eb
      Philippe Gerum authored
      Fix up the IPU (GPU) driver in order to channel interrupts through the
      interrupt pipeline.
      955e58eb
    • Greg Gallagher's avatar
      gpio: zynq: ipipe: fix build · 117e9342
      Greg Gallagher authored
      117e9342
    • Greg Gallagher's avatar
      gpio: pl061: ipipe: fix build · c8c66622
      Greg Gallagher authored
      c8c66622
    • Greg Gallagher's avatar
      gpio: mvebu: ipipe: fix build · 61cf359e
      Greg Gallagher authored
      61cf359e