arch/tile: don't wait for migrating PTEs in an NMI handler
authorChris Metcalf <cmetcalf@tilera.com>
Thu, 29 Mar 2012 19:34:52 +0000 (15:34 -0400)
committerChris Metcalf <cmetcalf@tilera.com>
Mon, 2 Apr 2012 16:13:02 +0000 (12:13 -0400)
Doing so raises the possibility of self-deadlock if we are waiting
for a backtrace for an oprofile or perf interrupt while we are
in the middle of migrating our own stack page.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

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