Re: [patch] 2.6.6-rc2 Allow architectures to reenable interrupts on contended spinlocks

From: Andrew Morton (akpm_at_osdl.org)
Date: 04/27/04

  • Next message: Clemens Schwaighofer: "2.6.6-rc2-mm2 + Adaptec I2O" 
    Date:	Mon, 26 Apr 2004 21:49:52 -0700
To: Keith Owens <kaos@sgi.com>

    Keith Owens <kaos@sgi.com> wrote:
    >
    > Enable interrupts while waiting for a disabled spinlock, but only if
    > interrupts were enabled before issuing spin_lock_irqsave(). It makes a
    > measurable difference to interrupt servicing on large systems.

    Do you know which are the offending locks?

    How much difference, and how large are the systems?

    Thanks.
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