linux-kernel - Re: [PATCH v1 05/15] perf pmu: Allow hardcoded terms to be applied to attributes

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Message-ID: <ZuGp2Mt-f-PQ6HIa@x1>
Date: Wed, 11 Sep 2024 11:31:52 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: 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>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>,
	James Clark <james.clark@...aro.org>,
	Mike Leach <mike.leach@...aro.org>, Leo Yan <leo.yan@...ux.dev>,
	Ravi Bangoria <ravi.bangoria@....com>,
	Weilin Wang <weilin.wang@...el.com>,
	Jing Zhang <renyu.zj@...ux.alibaba.com>,
	Xu Yang <xu.yang_2@....com>, Sandipan Das <sandipan.das@....com>,
	Benjamin Gray <bgray@...ux.ibm.com>,
	Athira Jajeev <atrajeev@...ux.vnet.ibm.com>,
	Howard Chu <howardchu95@...il.com>,
	Dominique Martinet <asmadeus@...ewreck.org>,
	Yang Jihong <yangjihong@...edance.com>,
	Colin Ian King <colin.i.king@...il.com>,
	Veronika Molnarova <vmolnaro@...hat.com>,
	"Dr. David Alan Gilbert" <linux@...blig.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Changbin Du <changbin.du@...wei.com>, Ze Gao <zegao2021@...il.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Clément Le Goffic <clement.legoffic@...s.st.com>,
	Sun Haiyong <sunhaiyong@...ngson.cn>,
	Junhao He <hejunhao3@...wei.com>,
	Tiezhu Yang <yangtiezhu@...ngson.cn>,
	Yicong Yang <yangyicong@...ilicon.com>,
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v1 05/15] perf pmu: Allow hardcoded terms to be applied
 to attributes

On Fri, Sep 06, 2024 at 10:08:20PM -0700, Ian Rogers wrote:
> Hard coded terms like "config=10" are skipped by perf_pmu__config
> assuming they were already applied to a perf_event_attr by parse
> event's config_attr function. When doing a reverse number to name
> lookup in perf_pmu__name_from_config, as the hardcoded terms aren't
> applied the config value is incorrect leading to misses or false
> matches. Fix this by adding a parameter to have perf_pmu__config apply
> hardcoded terms too (not just in parse event's config_term_common).

Stopped here:

  CC      /tmp/build/perf-tools-next/util/stat.o
util/pmu.c: In function ‘pmu_config_term’:
util/pmu.c:1397:17: error: switch missing default case [-Werror=switch-default]
 1397 |                 switch (term->type_term) {
      |                 ^~~~~~
  CC      /tmp/build/perf-tools-next/util/stat-shadow.o