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From: Ian Rogers <irogers@google.com>
Date: Mon, 22 Apr 2024 13:59:27 -0700
Message-ID: <CAP-5=fXwkrPuWBTedUxjc=2GyDwPsTA75RAyN+nj4iHSFozRwg@mail.gmail.com>
Subject: Re: [PATCH v3 00/12] dso/dsos memory savings and clean up
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>, Peter Zijlstra <peterz@infradead.org>, 
	Ingo Molnar <mingo@redhat.com>, Mark Rutland <mark.rutland@arm.com>, 
	Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>, 
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	K Prateek Nayak <kprateek.nayak@amd.com>, Yanteng Si <siyanteng@loongson.cn>, 
	Yicong Yang <yangyicong@hisilicon.com>, Sun Haiyong <sunhaiyong@loongson.cn>, 
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On Mon, Apr 22, 2024 at 1:55=E2=80=AFPM Arnaldo Carvalho de Melo
<acme@kernel.org> wrote:
>
> On Mon, Apr 22, 2024 at 01:06:46PM -0700, Namhyung Kim wrote:
> > On Thu, Apr 11, 2024 at 11:42=E2=80=AFAM Arnaldo Carvalho de Melo
> > <acme@kernel.org> wrote:
> > >
> > > On Tue, Apr 09, 2024 at 11:42:02PM -0700, Ian Rogers wrote:
> > > > 12 more patches from:
> > > > https://lore.kernel.org/lkml/20240202061532.1939474-1-irogers@googl=
e.com/
> > > > a near half year old adventure in trying to lower perf's dynamic
> > > > memory use. Bits like the memory overhead of opendir are on the
> > > > sidelines for now, too much fighting over how
> > > > distributions/C-libraries present getdents. These changes are more
> > > > good old fashioned replace an rb-tree with a sorted array and add
> > > > reference count tracking.
> > > >
> > > > The changes migrate dsos code, the collection of dso structs, more
> > > > into the dsos.c/dsos.h files. As with maps and threads, this is don=
e
> > > > so the internals can be changed - replacing a linked list (for fast
> > > > iteration) and an rb-tree (for fast finds) with a lazily sorted
> > > > array. The complexity of operations remain roughly the same, althou=
gh
> > > > iterating an array is likely faster than iterating a linked list, t=
he
> > > > memory usage is at least reduce by half.
> > >
> > > Got the first 5 patches, would be nice if more people could review it=
,
> > > I'll try and get back to is soon.
> >
> > For the series:
> >
> > Acked-by: Namhyung Kim <namhyung@kernel.org>
>
> It is not applying right now, I've just merged with torvalds/master and
> I'm running build tests now, will push to tmp.perf-tools-next right now.

Ok, do you want me to rebase on tmp.perf-tools-next?

Thanks,
Ian

> - Arnaldo