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Date:   Mon, 22 Jan 2018 17:58:47 -0200
From:   Mauro Carvalho Chehab <mchehab@s-opensource.com>
To:     Frederic Weisbecker <frederic@kernel.org>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Levin Alexander <alexander.levin@verizon.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Hannes Frederic Sowa <hannes@stressinduktion.org>,
        "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
        Wanpeng Li <wanpeng.li@hotmail.com>,
        Dmitry Safonov <dima@arista.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Radu Rendec <rrendec@arista.com>,
        Ingo Molnar <mingo@kernel.org>,
        Stanislaw Gruszka <sgruszka@redhat.com>,
        Rik van Riel <riel@redhat.com>,
        Eric Dumazet <edumazet@google.com>,
        David Miller <davem@davemloft.net>
Subject: Re: [RFC PATCH 0/4] softirq: Per vector threading v3
Message-ID: <20180122175847.58b90922@vela.lan>
In-Reply-To: <1516376774-24076-1-git-send-email-frederic@kernel.org>
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Em Fri, 19 Jan 2018 16:46:10 +0100
Frederic Weisbecker <frederic@kernel.org> escreveu:

> As per Linus suggestion, this take doesn't limit the number of occurences
> per jiffy anymore but instead defers a vector to workqueues as soon as
> it gets re-enqueued on IRQ tail.
> 
> No tunable here, so testing should be easier.
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
> 	softirq/thread-v3

Frederic,

FYI, I'm out of town for two weeks. I'll try to setup a test environment
while traveling, but I'm unsure if it will work, as I won't have access to
my DVB-S2 provider from here.

> 
> HEAD: 6835e92cbd70ef4a056987d2e1ed383b294429d4
> 
> Thanks,
> 	Frederic
> ---
> 
> Frederic Weisbecker (4):
>       softirq: Limit vector to a single iteration on IRQ tail
>       softirq: Per vector deferment to workqueue
>       softirq: Defer to workqueue when rescheduling is needed
>       softirq: Replace ksoftirqd with workqueues entirely
> 
> 
>  Documentation/RCU/stallwarn.txt |   4 +-
>  include/linux/interrupt.h       |   7 +-
>  kernel/sched/cputime.c          |  12 +--
>  kernel/sched/sched.h            |   4 +-
>  kernel/softirq.c                | 223 +++++++++++++++++++++++-----------------
>  net/ipv4/tcp_output.c           |   5 +-
>  6 files changed, 144 insertions(+), 111 deletions(-)


Cheers,
Mauro