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From: Namhyung Kim <namhyung@kernel.org>
Date: Mon, 22 Apr 2024 13:06:46 -0700
Message-ID: <CAM9d7chWBv14hD4huuoas4ncZaziuTnHi_JvieKqrLZF9fDpPw@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: Ian Rogers <irogers@google.com>, 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>, 
	Adrian Hunter <adrian.hunter@intel.com>, Kan Liang <kan.liang@linux.intel.com>, 
	James Clark <james.clark@arm.com>, Athira Rajeev <atrajeev@linux.vnet.ibm.com>, 
	Colin Ian King <colin.i.king@gmail.com>, Leo Yan <leo.yan@linux.dev>, Song Liu <song@kernel.org>, 
	Ilkka Koskinen <ilkka@os.amperecomputing.com>, Ben Gainey <ben.gainey@arm.com>, 
	K Prateek Nayak <kprateek.nayak@amd.com>, Yanteng Si <siyanteng@loongson.cn>, 
	Yicong Yang <yangyicong@hisilicon.com>, Sun Haiyong <sunhaiyong@loongson.cn>, 
	Ravi Bangoria <ravi.bangoria@amd.com>, Anne Macedo <retpolanne@posteo.net>, 
	Changbin Du <changbin.du@huawei.com>, Andi Kleen <ak@linux.intel.com>, 
	Thomas Richter <tmricht@linux.ibm.com>, Masami Hiramatsu <mhiramat@kernel.org>, 
	zhaimingbing <zhaimingbing@cmss.chinamobile.com>, Li Dong <lidong@vivo.com>, 
	Paran Lee <p4ranlee@gmail.com>, elfring@users.sourceforge.net, 
	Markus Elfring <Markus.Elfring@web.de>, Yang Jihong <yangjihong1@huawei.com>, 
	Chengen Du <chengen.du@canonical.com>, linux-perf-users@vger.kernel.org, 
	linux-kernel@vger.kernel.org, bpf@vger.kernel.org
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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@google.co=
m/
> > 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>

Thanks,
Namhyung