On Tue, Feb 6, 2018 at 12:03 AM, Sagi Grimberg [off-list ref] wrote:
[...]

In the networking stack, each device driver implements adaptive IRQ moderation
on its own. The approach here is a bit different, it tries to take the common denominator,
which is per-queue statistics gathering and workload change identification
(basically decides if the moderation scheme needs to change).

not any more, Andy and Tal made the mlx5 AM code a kernel library
which is called DIM

f4e5f0e MAINTAINERS: add entry for Dynamic Interrupt Moderation
6a8788f bnxt_en: add support for software dynamic interrupt moderation
8115b75 net/dim: use struct net_dim_sample as arg to net_dim
4c4dbb4 net/mlx5e: Move dynamic interrupt coalescing code to include/linux
9a31742 net/mlx5e: Change Mellanox references in DIM code
b9c872f net/mlx5e: Move generic functions to new file
f5e7f67 net/mlx5e: Move AM logic enums
138968e net/mlx5e: Remove rq references in mlx5e_rx_am
f58ee09 net/mlx5e: Move interrupt moderation forward declarations
98dd1ed net/mlx5e: Move interrupt moderation structs to new file

can you make use of that? cc-ing them in case you have questions/comments

The library is targeted to multi-queue devices, but should work on single queue
devices as well, however I'm not sure that these devices will need something
like interrupt moderation.