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| author | Dongli Zhang | 2019-04-12 13:38:26 +0200 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk | 2019-04-13 01:44:46 +0200 |
| commit | 53b29c336830db48ad3dc737f88b8c065b1f0851 (patch) | |
| tree | 005f8ea4c317a99f2b583c2fa3b9db21f4eeb0b2 /drivers/xen | |
| parent | swiotlb: dump used and total slots when swiotlb buffer is full (diff) | |
| download | kernel-qcow2-linux-53b29c336830db48ad3dc737f88b8c065b1f0851.tar.gz kernel-qcow2-linux-53b29c336830db48ad3dc737f88b8c065b1f0851.tar.xz kernel-qcow2-linux-53b29c336830db48ad3dc737f88b8c065b1f0851.zip | |
swiotlb: save io_tlb_used to local variable before leaving critical section
When swiotlb is full, the kernel would print io_tlb_used. However, the
result might be inaccurate at that time because we have left the critical
section protected by spinlock.
Therefore, we backup the io_tlb_used into local variable before leaving
critical section.
Fixes: 83ca25948940 ("swiotlb: dump used and total slots when swiotlb buffer is full")
Suggested-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
0 files changed, 0 insertions, 0 deletions