linux-kernel - Re: [PATCH v6 00/27] Constify tool pointers

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Message-ID: <ZrpojZqZHnvJhNWS@x1>
Date: Mon, 12 Aug 2024 16:54:53 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>, Kan Liang <kan.liang@...ux.intel.com>,
	John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>,
	James Clark <james.clark@....com>,
	Mike Leach <mike.leach@...aro.org>, Leo Yan <leo.yan@...ux.dev>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Yicong Yang <yangyicong@...ilicon.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	Nick Terrell <terrelln@...com>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Anshuman Khandual <anshuman.khandual@....com>,
	Song Liu <song@...nel.org>,
	Ilkka Koskinen <ilkka@...amperecomputing.com>,
	Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
	Huacai Chen <chenhuacai@...nel.org>,
	Yanteng Si <siyanteng@...ngson.cn>,
	Sun Haiyong <sunhaiyong@...ngson.cn>, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 00/27] Constify tool pointers

On Mon, Aug 12, 2024 at 11:10:02AM -0700, Ian Rogers wrote:
> On Mon, Aug 12, 2024 at 6:53 AM Arnaldo Carvalho de Melo
> <acme@...nel.org> wrote:
> >
> > On Fri, Jul 19, 2024 at 09:26:57AM -0700, Ian Rogers wrote:
> > > On Fri, Jul 19, 2024 at 1:51 AM Adrian Hunter <adrian.hunter@...el.com> wrote:
> > > >
> > > > On 18/07/24 03:59, Ian Rogers wrote:
> > > > > struct perf_tool provides a set of function pointers that are called
> > > > > through when processing perf data. To make filling the pointers less
> > > > > cumbersome, if they are NULL perf_tools__fill_defaults will add
> > > > > default do nothing implementations.
> > > > >
> > > > > This change refactors struct perf_tool to have an init function that
> > > > > provides the default implementation. The special use of NULL and
> > > > > perf_tools__fill_defaults are removed. As a consequence the tool
> > > > > pointers can then all be made const, which better reflects the
> > > > > behavior a particular perf command would expect of the tool and to
> > > > > some extent can reduce the cognitive load on someone working on a
> > > > > command.
> > > > >
> > > > > v6: Rebase adding Adrian's reviewed-by/tested-by and Leo's tested-by.
> > > >
> > > > The tags were really meant only for patch 1, the email that was replied to.
> > > >
> > > > But now for patches 2 and 3:
> > > >
> > > > Reviewed-by: Adrian Hunter <adrian.hunter@...el.com>
> >
> > Applied 1-3, 4 is not applying, I'll look at it later.
> 
> I have a rebase and can resend. I haven't addressed Adrian's feedback

Please resend then.

- Arnaldo

> as I prefer callers of the tool function pointers not to have to do
> NULL tests, I'm trying to minimize spaghetti. Not sure if you're
> applying the whole series here or just the beginning.
> 
> Thanks,
> Ian