linux-kernel - Re: [PATCH v5 15/50] perf maps: Add maps__for_each

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Date:   Wed, 6 Dec 2023 10:53:58 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Nick Terrell <terrelln@...com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        Huacai Chen <chenhuacai@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>,
        "Steinar H. Gunderson" <sesse@...gle.com>,
        Liam Howlett <liam.howlett@...cle.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Colin Ian King <colin.i.king@...il.com>,
        Dmitrii Dolgov <9erthalion6@...il.com>,
        Yang Jihong <yangjihong1@...wei.com>,
        Ming Wang <wangming01@...ngson.cn>,
        James Clark <james.clark@....com>,
        K Prateek Nayak <kprateek.nayak@....com>,
        Sean Christopherson <seanjc@...gle.com>,
        Leo Yan <leo.yan@...aro.org>,
        Ravi Bangoria <ravi.bangoria@....com>,
        German Gomez <german.gomez@....com>,
        Changbin Du <changbin.du@...wei.com>,
        Paolo Bonzini <pbonzini@...hat.com>, Li Dong <lidong@...o.com>,
        Sandipan Das <sandipan.das@....com>,
        liuwenyu <liuwenyu7@...wei.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Guilherme Amadio <amadio@...too.org>
Subject: Re: [PATCH v5 15/50] perf maps: Add maps__for_each_map to call a
 function on each entry

Em Mon, Dec 04, 2023 at 03:46:08PM -0800, Namhyung Kim escreveu:
> On Mon, Nov 27, 2023 at 2:10 PM Ian Rogers <irogers@...gle.com> wrote:
> >
> > Most current uses of maps don't take the rwsem introducing a risk that
> > the maps will change during iteration. Introduce maps__for_each_map
> > that iterates the entries under the read lock of the rwsem. This
> > replaces the maps__for_each_entry macro that is moved into
> > maps.c. maps__for_each_entry_safe will be replaced in a later change.
> >
> > Signed-off-by: Ian Rogers <irogers@...gle.com>
> 
> At first, I wanted to have each conversion in a separate commit.
> But it's all mechanical changes so probably ok to go together.

> Acked-by: Namhyung Kim <namhyung@...nel.org>

I think we should do it in separate commits, Ian, can you please
consider doing that, please?

I'm pushing what I have to tmp.perf-tools-next now.

- Arnaldo