speed up the speed of freeing iova and add a cond_resched().
v3: Fix check format warning.
v2: add a cover letter to generate a pr.
Zhang Zekun (2): iommu/iova: free iovas on each cpu in flush queue iommu/iova: Try to schedule out when free iova too long
drivers/iommu/iova.c | 41 +++++++++++++++++++++++++---------------- 1 file changed, 25 insertions(+), 16 deletions(-)