[lkml]   [2011]   [Sep]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 20/62] sparc: irq: Remove IRQF_DISABLED
    From: Thomas Gleixner <>
    Date: Wed, 7 Sep 2011 19:57:21 +0200 (CEST)

    > On Wed, 7 Sep 2011, David Miller wrote:
    >> From: Thomas Gleixner <>
    >> Date: Wed, 7 Sep 2011 19:33:52 +0200 (CEST)
    >> We had big problems when openning thousands of virtual network
    >> devices, each with their own unique IRQ, and pointed all at the same
    >> cpu, and we'd get IRQ stack overflows.
    >> See commit c58543c869606532c2382f027d6466f4672ea756
    >> So this change to make IRQF_DISABLED a nop has reintroduced this bug.
    > See commit e58aa3d2d0cc01ad8d6f7f640a0670433f794922
    > We run ALL interrupt handlers with interrupts disabled for that reason
    > and we even check and yell when an interrupt handler returns with
    > interrupts enabled. That's why IRQF_DISABLED became meaningless.


    Can I politely ask that a reference to that commit and something like
    your paragraph here explaining things is added to these IRQF_DISABLED
    removal patches?


     \ /
      Last update: 2011-09-07 20:17    [W:0.019 / U:12.732 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site