From: Suren Baghdasaryan <surenb@google.com>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Tejun Heo <tj@kernel.org>,
lizefan@huawei.com, Johannes Weiner <hannes@cmpxchg.org>,
axboe@kernel.dk, dennis@kernel.org,
Dennis Zhou <dennisszhou@gmail.com>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jonathan Corbet <corbet@lwn.net>,
cgroups@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
linux-doc@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
kernel-team <kernel-team@android.com>
Subject: Re: [PATCH v6 1/7] psi: introduce state_mask to represent stalled psi states
Date: Tue, 19 Mar 2019 17:06:50 -0700 [thread overview]
Message-ID: <CAJuCfpFEqv+x2GnSeU_JLQ3ahvfgNVPYyoRAxkDHcvVw-4r=jg@mail.gmail.com> (raw)
In-Reply-To: <20190320110249.652ec153@canb.auug.org.au>
On Tue, Mar 19, 2019 at 5:02 PM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Hi Suren,
Hi Stephen,
> On Tue, 19 Mar 2019 16:56:13 -0700 Suren Baghdasaryan <surenb@google.com> wrote:
> >
> > The psi monitoring patches will need to determine the same states as
> > record_times(). To avoid calculating them twice, maintain a state mask
> > that can be consulted cheaply. Do this in a separate patch to keep the
> > churn in the main feature patch at a minimum.
> >
> > This adds 4-byte state_mask member into psi_group_cpu struct which results
> > in its first cacheline-aligned part becoming 52 bytes long. Add explicit
> > values to enumeration element counters that affect psi_group_cpu struct
> > size.
> >
> > Link: http://lkml.kernel.org/r/20190124211518.244221-4-surenb@google.com
> > Signed-off-by: Suren Baghdasaryan <surenb@google.com>
> > Acked-by: Johannes Weiner <hannes@cmpxchg.org>
> > Cc: Dennis Zhou <dennis@kernel.org>
> > Cc: Ingo Molnar <mingo@redhat.com>
> > Cc: Jens Axboe <axboe@kernel.dk>
> > Cc: Li Zefan <lizefan@huawei.com>
> > Cc: Peter Zijlstra <peterz@infradead.org>
> > Cc: Tejun Heo <tj@kernel.org>
> > Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> > Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
>
> This last SOB line should not be here ... it is only there on the
> original patch because I import Andrew's quilt series into linux-next.
Sorry about that. This particular patch has not changed since then,
that's why I kept all the lines there. Please let me know if I should
remove it and re-post the patchset.
Thanks,
Suren.
> --
> Cheers,
> Stephen Rothwell
>
> --
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next prev parent reply other threads:[~2019-03-20 0:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-19 23:56 [PATCH v6 0/7] psi: pressure stall monitors v6 Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
2019-03-19 23:56 ` [PATCH v6 1/7] psi: introduce state_mask to represent stalled psi states Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
2019-03-20 0:02 ` Stephen Rothwell
2019-03-20 0:06 ` Suren Baghdasaryan [this message]
2019-03-20 0:06 ` Suren Baghdasaryan
2019-03-20 0:15 ` Stephen Rothwell
2019-03-20 1:53 ` Suren Baghdasaryan
2019-03-20 1:53 ` Suren Baghdasaryan
2019-03-19 23:56 ` [PATCH v6 2/7] psi: make psi_enable static Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
2019-03-20 20:55 ` Johannes Weiner
2019-03-19 23:56 ` [PATCH v6 3/7] psi: rename psi fields in preparation for psi trigger addition Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
2019-03-20 20:57 ` Johannes Weiner
2019-03-19 23:56 ` [PATCH v6 4/7] psi: split update_stats into parts Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
2019-03-20 20:59 ` Johannes Weiner
2019-03-19 23:56 ` [PATCH v6 5/7] psi: track changed states Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
2019-03-20 21:01 ` Johannes Weiner
2019-03-19 23:56 ` [PATCH v6 6/7] refactor header includes to allow kthread.h inclusion in psi_types.h Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
2019-03-20 21:04 ` Johannes Weiner
2019-03-19 23:56 ` [PATCH v6 7/7] psi: introduce psi monitor Suren Baghdasaryan
2019-03-19 23:56 ` Suren Baghdasaryan
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