lkml.org 
[lkml]   [2020]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[patch 23/30] net/mlx5: Use effective interrupt affinity
    Using the interrupt affinity mask for checking locality is not really
    working well on architectures which support effective affinity masks.

    The affinity mask is either the system wide default or set by user space,
    but the architecture can or even must reduce the mask to the effective set,
    which means that checking the affinity mask itself does not really tell
    about the actual target CPUs.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Cc: Saeed Mahameed <saeedm@nvidia.com>
    Cc: Leon Romanovsky <leon@kernel.org>
    Cc: "David S. Miller" <davem@davemloft.net>
    Cc: Jakub Kicinski <kuba@kernel.org>
    Cc: netdev@vger.kernel.org
    Cc: linux-rdma@vger.kernel.org
    ---
    drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
    +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
    @@ -1998,7 +1998,7 @@ static int mlx5e_open_channel(struct mlx
    c->num_tc = params->num_tc;
    c->xdp = !!params->xdp_prog;
    c->stats = &priv->channel_stats[ix].ch;
    - c->aff_mask = irq_get_affinity_mask(irq);
    + c->aff_mask = irq_get_effective_affinity_mask(irq);
    c->lag_port = mlx5e_enumerate_lag_port(priv->mdev, ix);

    netif_napi_add(netdev, &c->napi, mlx5e_napi_poll, 64);
    \
     
     \ /
      Last update: 2020-12-10 20:47    [W:4.357 / U:0.216 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site