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2019-10-09DIM: fix dim.h kernel-doc and headersRandy Dunlap1-30/+33
Lots of fixes to kernel-doc in structs, enums, and functions. Also add header files that are being used but not yet #included. Signed-off-by: Randy Dunlap <[email protected]> Cc: Yamin Friedman <[email protected]> Cc: Tal Gilboa <[email protected]> Cc: Saeed Mahameed <[email protected]> Cc: Doug Ledford <[email protected]> Cc: Jason Gunthorpe <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2019-07-25lib/dim: Fix -Wunused-const-variable warningsLeon Romanovsky1-56/+0
DIM causes to the following warnings during kernel compilation which indicates that tx_profile and rx_profile are supposed to be declared in *.c and not in *.h files. In file included from ./include/rdma/ib_verbs.h:64, from ./include/linux/mlx5/device.h:37, from ./include/linux/mlx5/driver.h:51, from ./include/linux/mlx5/vport.h:36, from drivers/infiniband/hw/mlx5/ib_virt.c:34: ./include/linux/dim.h:326:1: warning: _tx_profile_ defined but not used [-Wunused-const-variable=] 326 | tx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = { | ^~~~~~~~~~ ./include/linux/dim.h:320:1: warning: _rx_profile_ defined but not used [-Wunused-const-variable=] 320 | rx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = { | ^~~~~~~~~~ Fixes: 4f75da3666c0 ("linux/dim: Move implementation to .c files") Signed-off-by: Leon Romanovsky <[email protected]> Reviewed-by: Bart Van Assche <[email protected]> Acked-by: Saeed Mahameed <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-11RDMA/core: Fix -Wunused-const-variable warningsQian Cai1-13/+0
The commit below introduced a few compilation warnings. In file included from ./include/rdma/ib_verbs.h:64, from ./include/linux/mlx5/device.h:37, from ./include/linux/mlx5/driver.h:51, from drivers/net/ethernet/mellanox/mlx5/core/uar.c:36: ./include/linux/dim.h:378:1: warning: 'rdma_dim_prof' defined but not used [-Wunused-const-variable=] rdma_dim_prof[RDMA_DIM_PARAMS_NUM_PROFILES] = { ^~~~~~~~~~~~~ In file included from ./include/rdma/ib_verbs.h:64, from ./include/linux/mlx5/device.h:37, from ./include/linux/mlx5/driver.h:51, from drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c:37: ./include/linux/dim.h:378:1: warning: 'rdma_dim_prof' defined but not used [-Wunused-const-variable=] rdma_dim_prof[RDMA_DIM_PARAMS_NUM_PROFILES] = { ^~~~~~~~~~~~~ Since only ib_cq_rdma_dim_work() in drivers/infiniband/core/cq.c uses it, just move the definition over there. Fixes: f4915455dcf0 ("linux/dim: Implement RDMA adaptive moderation (DIM)") Signed-off-by: Qian Cai <[email protected]> Reviewed-by: Jason Gunthorpe <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2019-07-08linux/dim: Implement RDMA adaptive moderation (DIM)Yamin Friedman1-0/+36
RDMA DIM implements a different algorithm from net DIM and is based on completions which is how we can implement interrupt moderation in RDMA. The algorithm optimizes for number of completions and ratio between completions and events. In order to avoid long latencies, the implementation performs fast reduction of moderation level when the traffic changes. Signed-off-by: Yamin Friedman <[email protected]> Reviewed-by: Max Gurtovoy <[email protected]> Reviewed-by: Sagi Grimberg <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2019-06-25linux/dim: Add completions count to dim_sampleYamin Friedman1-3/+25
Added a measurement of completions per/msec to allow for completion based dim algorithms. In order to use dynamic interrupt moderation with RDMA we need to have a different measurment than packets per second. This change is meant to prepare for adding a new DIM method. All drivers that use net_dim and thus do not need a completion count will have the completions set to 0. Signed-off-by: Yamin Friedman <[email protected]> Reviewed-by: Max Gurtovoy <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-06-25linux/dim: Move implementation to .c filesTal Gilboa1-64/+255
Moved all logic from dim.h and net_dim.h to dim.c and net_dim.c. This is both more structurally appealing and would allow to only expose externally used functions. Signed-off-by: Tal Gilboa <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-06-25linux/dim: Rename externally used net_dim membersTal Gilboa1-11/+10
Removed 'net' prefix from functions and structs used by external drivers. Signed-off-by: Tal Gilboa <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-06-25linux/dim: Rename net_dim_sample() to net_dim_update_sample()Tal Gilboa1-1/+2
In order to avoid confusion between the function and the similarly named struct. In preparation for removing the 'net' prefix from dim members. Signed-off-by: Tal Gilboa <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-06-25linux/dim: Rename externally exposed macrosTal Gilboa1-6/+6
Renamed macros in use by external drivers. Signed-off-by: Tal Gilboa <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-06-25linux/dim: Remove "net" prefix from internal DIM membersTal Gilboa1-43/+43
Only renaming functions and structs which aren't used by an external code. Signed-off-by: Tal Gilboa <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-06-25linux/dim: Move logic to dim.hTal Gilboa1-0/+153
In preparation for supporting more implementations of the DIM algorithm, I'm moving what would become common logic to a common library. Downstream DIM implementations will use the common lib for their implementation. Signed-off-by: Tal Gilboa <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
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