linux-kernel - Re: [PATCH 0/2] block, bfq: make bfq disable iocost and present a double interface

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Message-Id: <19BC0425-559E-433A-ACAD-B12FA02E20E4@linaro.org>
Date:   Wed, 9 Oct 2019 16:25:03 +0200
From:   Paolo Valente <paolo.valente@...aro.org>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     linux-block <linux-block@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        noreply-spamdigest via bfq-iosched 
        <bfq-iosched@...glegroups.com>, oleksandr@...alenko.name,
        Tejun Heo <tj@...nel.org>, cgroups@...r.kernel.org
Subject: Re: [PATCH 0/2] block, bfq: make bfq disable iocost and present a
 double interface

Jens, Tejun,
can we proceed with this double-interface solution?

Thanks,
Paolo

> Il giorno 1 ott 2019, alle ore 21:33, Paolo Valente <paolo.valente@...aro.org> ha scritto:
> 
> Hi Jens,
> 
> the first patch in this series is Tejun's patch for making BFQ disable
> io.cost. The second patch makes BFQ present both the bfq-prefixes
> parameters and non-prefixed parameters, as suggested by Tejun [1].
> 
> In the first patch I've tried to use macros not to repeat code
> twice. checkpatch complains that these macros should be enclosed in
> parentheses. I don't see how to do it. I'm willing to switch to any
> better solution.
> 
> Thanks,
> Paolo
> 
> [1] https://lkml.org/lkml/2019/9/18/736
> 
> Paolo Valente (1):
>  block, bfq: present a double cgroups interface
> 
> Tejun Heo (1):
>  blkcg: Make bfq disable iocost when enabled
> 
> Documentation/admin-guide/cgroup-v2.rst |   8 +-
> Documentation/block/bfq-iosched.rst     |  40 ++--
> block/bfq-cgroup.c                      | 260 ++++++++++++------------
> block/bfq-iosched.c                     |  32 +++
> block/blk-iocost.c                      |   5 +-
> include/linux/blk-cgroup.h              |   5 +
> kernel/cgroup/cgroup.c                  |   2 +
> 7 files changed, 201 insertions(+), 151 deletions(-)
> 
> --
> 2.20.1