1. 22 May, 2018 3 commits
  2. 21 May, 2018 2 commits
    • Jens Axboe's avatar
      nvme-pci: fix race between poll and IRQ completions · 68fa9dbe
      Jens Axboe authored
      If polling completions are racing with the IRQ triggered by a
      completion, the IRQ handler will find no work and return IRQ_NONE.
      This can trigger complaints about spurious interrupts:
      
      [  560.169153] irq 630: nobody cared (try booting with the "irqpoll" option)
      [  560.175988] CPU: 40 PID: 0 Comm: swapper/40 Not tainted 4.17.0-rc2+ #65
      [  560.175990] Hardware name: Intel Corporation S2600STB/S2600STB, BIOS SE5C620.86B.00.01.0010.010920180151 01/09/2018
      [  560.175991] Call Trace:
      [  560.175994]  <IRQ>
      [  560.176005]  dump_stack+0x5c/0x7b
      [  560.176010]  __report_bad_irq+0x30/0xc0
      [  560.176013]  note_interrupt+0x235/0x280
      [  560.176020]  handle_irq_event_percpu+0x51/0x70
      [  560.176023]  handle_irq_event+0x27/0x50
      [  560.176026]  handle_edge_irq+0x6d/0x180
      [  560.176031]  handle_irq+0xa5/0x110
      [  560.176036]  do_IRQ+0x41/0xc0
      [  560.176042]  common_interrupt+0xf/0xf
      [  560.176043]  </IRQ>
      [  560.176050] RIP: 0010:cpuidle_enter_state+0x9b/0x2b0
      [  560.176052] RSP: 0018:ffffa0ed4659fe98 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffdd
      [  560.176055] RAX: ffff9527beb20a80 RBX: 000000826caee491 RCX: 000000000000001f
      [  560.176056] RDX: 000000826caee491 RSI: 00000000335206ee RDI: 0000000000000000
      [  560.176057] RBP: 0000000000000001 R08: 00000000ffffffff R09: 0000000000000008
      [  560.176059] R10: ffffa0ed4659fe78 R11: 0000000000000001 R12: ffff9527beb29358
      [  560.176060] R13: ffffffffa235d4b8 R14: 0000000000000000 R15: 000000826caed593
      [  560.176065]  ? cpuidle_enter_state+0x8b/0x2b0
      [  560.176071]  do_idle+0x1f4/0x260
      [  560.176075]  cpu_startup_entry+0x6f/0x80
      [  560.176080]  start_secondary+0x184/0x1d0
      [  560.176085]  secondary_startup_64+0xa5/0xb0
      [  560.176088] handlers:
      [  560.178387] [<00000000efb612be>] nvme_irq [nvme]
      [  560.183019] Disabling IRQ #630
      
      A previous commit removed ->cqe_seen that was handling this case,
      but we need to handle this a bit differently due to completions
      now running outside the queue lock. Return IRQ_HANDLED from the
      IRQ handler, if the completion ring head was moved since we last
      saw it.
      
      Fixes: 5cb525c8 ("nvme-pci: handle completions outside of the queue lock")
      Reported-by: Keith Busch's avatarKeith Busch <[email protected]>
      Reviewed-by: Keith Busch's avatarKeith Busch <[email protected]>
      Tested-by: Keith Busch's avatarKeith Busch <[email protected]>
      Signed-off-by: default avatarJens Axboe <[email protected]>
      68fa9dbe
    • Jens Axboe's avatar
      Merge branch 'nvme-4.18' of git://git.infradead.org/nvme into for-4.18/block · 81b1dab4
      Jens Axboe authored
      Pull NVMe changes from Keith:
      
      "This is just the first nvme pull request for 4.18. There are several
      fabrics and target patches that I missed, so there will be more to
      come."
      
      * 'nvme-4.18' of git://git.infradead.org/nvme:
        nvme-pci: drop IRQ disabling on submission queue lock
        nvme-pci: split the nvme queue lock into submission and completion locks
        nvme-pci: handle completions outside of the queue lock
        nvme-pci: move ->cq_vector == -1 check outside of ->q_lock
        nvme-pci: remove cq check after submission
        nvme-pci: simplify nvme_cqe_valid
        nvme: mark the result argument to nvme_complete_async_event volatile
        nvme/pci: Sync controller reset for AER slot_reset
        nvme/pci: Hold controller reference during async probe
        nvme: only reconfigure discard if necessary
        nvme/pci: Use async_schedule for initial reset work
        nvme: lightnvm: add granby support
        NVMe: Add Quirk Delay before CHK RDY for Seagate Nytro Flash Storage
        nvme: change order of qid and cmdid in completion trace
        nvme: fc: provide a descriptive error
      81b1dab4
  3. 18 May, 2018 8 commits
  4. 16 May, 2018 8 commits
  5. 15 May, 2018 1 commit
  6. 14 May, 2018 18 commits