IB/mlx5: Optimize u64 division on 32-bit arches

Browse source

Commit f164be8c03 ("IB/mlx5: Extend caps stage to handle VAR
capabilities") introduced a straight "/" division of the u64 variable
"bar_size".

This was fixed with commit 685eff5131 ("IB/mlx5: Use div64_u64 for
num_var_hw_entries calculation"). However, div64_u64() is redundant here
as mlx5_var_table::stride_size is of type u32.  Make the actual code way
more optimized on 32-bit kernels using div_u64() and fix 80 chars
break-through by the way.

Fixes: 685eff5131 ("IB/mlx5: Use div64_u64 for num_var_hw_entries calculation")
Link: https://lore.kernel.org/r/20200217073629.8051-1-alobakin@dlink.ru
Signed-off-by: Alexander Lobakin <alobakin@dlink.ru>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

...

This commit is contained in:

Alexander Lobakin 2020-02-17 10:36:29 +03:00 • committed by Jason Gunthorpe

parent c13cac2a21

commit 91b74bf531

1 changed files with 2 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/infiniband/hw/mlx5/main.c

View file