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    SubjectRe: [PATCH -tip] x86: hw-breakpoints: Actually flush thread breakpoints in flush_thread().
    On Mon, Oct 05, 2009 at 07:23:06PM +0900, Paul Mundt wrote:
    > [ I noticed this whilst hacking up SH support, applies to the current
    > tracing/hw-breakpoints topic branch. ]
    > flush_thread() tries to do a TIF_DEBUG check before calling in to
    > flush_thread_hw_breakpoint() (which subsequently clears the thread flag),
    > but for some reason, the x86 code is manually clearing TIF_DEBUG
    > immediately before the test, so this path will never be taken.
    > This kills off the erroneous clear_tsk_thread_flag() and lets
    > flush_thread_hw_breakpoint() actually get invoked.

    Yes, this is wrong and we missed it. Thanks for fixing!

    > Presumably folks were getting lucky with testing and the
    > free_thread_info() -> free_thread_xstate() path was taking care of the
    > flush there.
    > Signed-off-by: Paul Mundt <>

    Acked-by: K.Prasad <>

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      Last update: 2009-10-05 12:53    [W:0.019 / U:9.772 seconds]
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