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    SubjectRe: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24

    * Ingo Molnar <mingo@elte.hu> wrote:

    > * Steven Rostedt <rostedt@goodmis.org> wrote:
    >
    > > Although turning off apm works, this is a fix to the symptom and not a
    > > cure. Has someone already taken a look at this code? Since
    > > apm_bios_call_simple calls local_save_flags and afterwards
    > > raw_lock_irq_restore is then called. Shouldn't that have been
    > > raw_local_save_flags?
    >
    > ah, indeed. I fixed this bug and have uploaded the -50-26 patch.
    > Chuck, does this fix the APM problems for you?

    i've also uploaded -50-27 in which i've improved the irq-flags debugging
    code. They are activated if CONFIG_DEBUG_PREEMPT is enabled, and can
    come in two variants of kernel messages:

    BUG: bad raw irq-flag value 80000000, test/3810!
    BUG: bad soft irq-flag value 00000202, test/3810!

    so we should now be able to detect mismatches of irq flags right where
    they occur.

    Ingo
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