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Date: Mon, 22 Apr 2024 17:55:15 -0300
From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>, Peter Zijlstra <peterz@infradead.org>,
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Subject: Re: [PATCH v3 00/12] dso/dsos memory savings and clean up
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References: <20240410064214.2755936-1-irogers@google.com>
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On Mon, Apr 22, 2024 at 01:06:46PM -0700, Namhyung Kim wrote:
> On Thu, Apr 11, 2024 at 11:42 AM 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@google.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 done
> > > 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, although
> > > iterating an array is likely faster than iterating a linked list, the
> > > 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.

- Arnaldo