linux-kernel - [RFC 0/2] Net softirq deferring to ksoftirqd

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Date:   Tue,  9 Jan 2018 13:36:21 +0000
From:   Dmitry Safonov <dima@...sta.com>
To:     linux-kernel@...r.kernel.org
Cc:     0x7f454c46@...il.com, Dmitry Safonov <dima@...sta.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Miller <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Frederic Weisbecker <fweisbec@...il.com>,
        Hannes Frederic Sowa <hannes@...essinduktion.org>,
        Ingo Molnar <mingo@...nel.org>,
        "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Radu Rendec <rrendec@...sta.com>,
        Rik van Riel <riel@...hat.com>,
        Stanislaw Gruszka <sgruszka@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Wanpeng Li <wanpeng.li@...mail.com>
Subject: [RFC 0/2] Net softirq deferring to ksoftirqd

Based on events I've saw on out-of-tree drivers, but I believe that
can happen on the mainstream ones.
I managed to get some results in Qemu VMs, but this lacks testing
on a real mainstream hardware.

Also I'm not sure that's completely sane thing to-do, so sending early
to get some reviews.

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: David Miller <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Hannes Frederic Sowa <hannes@...essinduktion.org>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com> 
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> 
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Radu Rendec <rrendec@...sta.com>
Cc: Rik van Riel <riel@...hat.com>
Cc: Stanislaw Gruszka <sgruszka@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Wanpeng Li <wanpeng.li@...mail.com>

Dmitry Safonov (2):
  softirq: Defer net rx/tx processing to ksoftirqd context
  softirq: Introduce mask for __do_softirq()

 include/linux/interrupt.h |  8 ++++----
 kernel/softirq.c          | 48 ++++++++++++++++++++++++++++++++++-------------
 2 files changed, 39 insertions(+), 17 deletions(-)

-- 
2.13.6