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    SubjectRe: [PATCH 3/6] x86: Allow the user not to build hw_breakpoints
    On 4/27/2011 11:26 AM, Frederic Weisbecker wrote:
    > On Wed, Apr 27, 2011 at 10:38:50AM -0700, H. Peter Anvin wrote:
    >>
    >> How big of a win, if any, is this, really?
    >
    > That's pretty significant, because if you can disable breakpoints,
    > then you can disable perf. Together they make quite a chunk.

    Another advantage is the ability to disable these features for kernel
    bringup on new targets and kernel versions. Recently in v2.6.38
    hw_breakpoints were broken in ARM. A change like this would have saved
    me a hack to the Kconfig at the least.

    Mike

    --
    Employee of Qualcomm Innovation Center, Inc.
    Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum


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