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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3dca0f42c7
Previously, we've fired all our completion callbacks straight from our ISR. Some of those callbacks were lightweight (for example, mlx4_en's and IPoIB napi callbacks), but some of them did more work (for example, the user-space RDMA stack uverbs' completion handler). Besides that, doing more than the minimal work in ISR is generally considered wrong, it could even lead to a hard lockup of the system. Since when a lot of completion events are generated by the hardware, the loop over those events could be so long, that we'll get into a hard lockup by the system watchdog. In order to avoid that, add a new way of invoking completion events callbacks. In the interrupt itself, we add the CQs which receive completion event to a per-EQ list and schedule a tasklet. In the tasklet context we loop over all the CQs in the list and invoke the user callback. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| amso1100 | ||
| cxgb3 | ||
| cxgb4 | ||
| ehca | ||
| ipath | ||
| mlx4 | ||
| mlx5 | ||
| mthca | ||
| nes | ||
| ocrdma | ||
| qib | ||
| usnic | ||
| Makefile | ||