xen/time: Check that the per_cpu data structure has data before freeing.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tue, 4 Jun 2013 21:11:52 +0000 (17:11 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Mon, 10 Jun 2013 12:43:36 +0000 (08:43 -0400)
We don't check whether the per_cpu data structure has actually
been freed in the past. This checks it and if it has been freed
in the past then just continues on without double-freeing.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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