netdev - [PATCH net-next 0/3] net: napi: addition of napi_defer_hard

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Message-Id: <20200422161329.56026-1-edumazet@google.com>
Date:   Wed, 22 Apr 2020 09:13:26 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Luigi Rizzo <lrizzo@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 0/3] net: napi: addition of napi_defer_hard_irqs

This patch series augments gro_glush_timeout feature with napi_defer_hard_irqs

As extensively described in first patch changelog, this can suppresss
the chit-chat traffic between NIC and host to signal interrupts and re-arming
them, since this can be an issue on high speed NIC with many queues.

The last patch in this series converts mlx4 TX completion to
napi_complete_done(), to enable this new mechanism.

Eric Dumazet (3):
  net: napi: add hard irqs deferral feature
  net: napi: use READ_ONCE()/WRITE_ONCE()
  net/mlx4_en: use napi_complete_done() in TX completion

 drivers/net/ethernet/mellanox/mlx4/en_rx.c   |  2 +-
 drivers/net/ethernet/mellanox/mlx4/en_tx.c   | 20 +++++++-------
 drivers/net/ethernet/mellanox/mlx4/mlx4_en.h |  4 +--
 include/linux/netdevice.h                    |  2 ++
 net/core/dev.c                               | 29 ++++++++++++--------
 net/core/net-sysfs.c                         | 20 +++++++++++++-
 6 files changed, 52 insertions(+), 25 deletions(-)

-- 
2.26.1.301.g55bc3eb7cb9-goog