linux-kernel - Re: [PATCH v1] tools build: Fix a number of Wconversion warnings

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Message-Id: <173946729282.1291083.15633927093597611976.b4-ty@kernel.org>
Date: Thu, 13 Feb 2025 09:21:32 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
 Arnaldo Carvalho de Melo <acme@...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>, James Clark <james.clark@...aro.org>, 
 linux-perf-users@...r.kernel.org, bpf@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Leo Yan <leo.yan@....com>, 
 Ian Rogers <irogers@...gle.com>
Subject: Re: [PATCH v1] tools build: Fix a number of Wconversion warnings

On Mon, 06 Jan 2025 13:54:42 -0800, Ian Rogers wrote:
> There's some expressed interest in having the compiler flag
> -Wconversion detect at build time certain kinds of potential problems:
> https://lore.kernel.org/lkml/20250103182532.GB781381@e132581.arm.com/
> 
> As feature detection passes -Wconversion from CFLAGS when set, the
> feature detection compile tests need to not fail because of
> -Wconversion as the failure will be interpretted as a missing
> feature. Switch various types to avoid the -Wconversion issue, the
> exact meaning of the code is unimportant as it is typically looking
> for header file definitions.
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung