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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2010-07-23 14:35:47 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-07-19 20:58:32 -0400 |
| commit | 494ef20db6ea2e2ab1c3a45a1461e6e717fdcf48 (patch) | |
| tree | 1ec8749b08e5042a57d08014ea9e0fea832e4ee8 /README | |
| parent | 0513fe9e5b54e47e37217ea078dd870e3825e02d (diff) | |
| download | lwn-494ef20db6ea2e2ab1c3a45a1461e6e717fdcf48.tar.gz lwn-494ef20db6ea2e2ab1c3a45a1461e6e717fdcf48.zip | |
xen/pciback: Fine-grain the spinlocks and fix BUG: scheduling while atomic cases.
We were using coarse spinlocks that could end up with a deadlock.
This patch fixes that and makes the spinlocks much more fine-grained.
We also drop be->watchding state spinlocks as they are already
guarded by the xenwatch_thread against multiple customers. Without
that we would trigger the BUG: scheduling while atomic.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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