| commit | 494ef20db6ea2e2ab1c3a45a1461e6e717fdcf48 | |
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | |
| Fri, 23 Jul 2010 18:35:47 +0000 (23 14:35 -0400) | ||
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | |
| Wed, 20 Jul 2011 00:58:32 +0000 (19 20:58 -0400) | ||
| tree | 1ec8749b08e5042a57d08014ea9e0fea832e4ee8 | treesnapshot (tar.gz zip) |
| parent | 0513fe9e5b54e47e37217ea078dd870e3825e02d | commitdiff |
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>
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>
| drivers/xen/xen-pciback/passthrough.c | diffblobblamehistory | |
| drivers/xen/xen-pciback/xenbus.c | diffblobblamehistory |