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Sat, 7 Sep 2024 06:04:09 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Sat, 07 Sep 2024 12:03:48 +0000 From: "Arnd Bergmann" To: "Florian Fainelli" , linux-arm-kernel@lists.infradead.org Cc: "Russell King" , "Krzysztof Kozlowski" , "Marek Szyprowski" , "Geert Uytterhoeven" , "Andrew Davis" , "Jason Gunthorpe" , "Mark Brown" , "Etienne Carriere" , "Trevor Woerner" , "Javier Carrasco" , "open list" Message-Id: <40412179-9bc2-409b-ab12-11149a3e4f5f@app.fastmail.com> In-Reply-To: <20240906213907.611684-1-florian.fainelli@broadcom.com> References: <20240906213907.611684-1-florian.fainelli@broadcom.com> Subject: Re: [PATCH] ARM: multi_v7_defconfig: Enable debugging symbols by default Content-Type: text/plain Content-Transfer-Encoding: 7bit On Fri, Sep 6, 2024, at 21:39, Florian Fainelli wrote: > Similarly to the ARM64 defconfig, enable debugging symbols and rely upon > the toolchain's default DWARF implementation. > > Signed-off-by: Florian Fainelli I usually build with debug info disabled when I'm build testing, but turn it on explicitly when I try to actually debug a problem. Depending on the configuration, adding debug info can significantly increase the build time and file size. I've tried to record exact data here, building the arm defconfig on gcc-14 with and without debug info, which doesn't seem too bad, especially with the reduced debug info: config vmlinux time total time vmlinux size disabled-gcc9 49s 81s 35MB reduced-gcc9 55s 98s 148MB full-gcc9 66s 105s 443MB disabled-gcc14 55s 90s 34MB reduced-gcc14 60s 99s 124MB full-gcc14 68s 115s 349MB There is still added disk usage for build testing, but the time overhead seems fine. I'd like to hear what others think about the tradeoff. Arnd