Matan Barak 3dca0f42c7 net/mlx4_core: Use tasklet for user-space CQ completion events ... 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>		2014-12-11 14:47:34 -05:00
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core	Merge branches 'core', 'cxgb4', 'iser', 'mlx5' and 'ocrdma' into for-next	2014-10-14 14:09:12 -07:00
hw	net/mlx4_core: Use tasklet for user-space CQ completion events	2014-12-11 14:47:34 -05:00
ulp	IB/isert: Adjust CQ size to HW limits	2014-11-19 22:28:42 -08:00
Kconfig	Merge branch 'ip-roce' into for-next	2014-01-22 23:24:21 -08:00
Makefile	IB: Allow build of hw/ and ulp/ subdirectories independently	2014-06-02 14:51:12 -07:00