On 07/12/2011 12:41 PM, Joerg Roedel wrote:
> Using TIF_bits sounds like a much better solution for this, wakeups are
> really rather expensive and its best to avoid extra if at all possible.
I would rather vote for Avi's solution too. Such a functionality is very
helpful for LWP-perf integration as well (because we need a way to call
do_mmap for a task != current).
It's not needed for that. See use_mm() (caller must be a kernel thread).
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I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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