linux-kernel - Re: [PATCH RFC v3 0/8] kernel-hacking: introduce CONFIG_NO_AUTO

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Message-ID: <CAC1kPDM2pUEwFRiUZFHKq_7sYpjARkFczJnp_FRu+r9-xYdgKg@mail.gmail.com>
Date: Tue, 6 May 2025 10:40:59 +0800
From: Chen Linxuan <chenlinxuan@...ontech.com>
To: Bart Van Assche <bvanassche@....org>
Cc: Brendan Jackman <jackmanb@...gle.com>, Peter Zijlstra <peterz@...radead.org>, 
	Christoph Hellwig <hch@....de>, chenlinxuan@...ontech.com, Keith Busch <kbusch@...nel.org>, 
	Jens Axboe <axboe@...nel.dk>, Sagi Grimberg <sagi@...mberg.me>, 
	Andrew Morton <akpm@...ux-foundation.org>, Yishai Hadas <yishaih@...dia.com>, 
	Jason Gunthorpe <jgg@...pe.ca>, Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>, 
	Kevin Tian <kevin.tian@...el.com>, Alex Williamson <alex.williamson@...hat.com>, 
	Peter Huewe <peterhuewe@....de>, Jarkko Sakkinen <jarkko@...nel.org>, 
	Masahiro Yamada <masahiroy@...nel.org>, Nathan Chancellor <nathan@...nel.org>, 
	Nicolas Schier <nicolas.schier@...ux.dev>, 
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>, Bill Wendling <morbo@...gle.com>, 
	Justin Stitt <justinstitt@...gle.com>, Vlastimil Babka <vbabka@...e.cz>, 
	Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>, 
	Johannes Weiner <hannes@...xchg.org>, Zi Yan <ziy@...dia.com>, 
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, "Paul E. McKenney" <paulmck@...nel.org>, 
	Boqun Feng <boqun.feng@...il.com>, Dmitry Vyukov <dvyukov@...gle.com>, 
	Andrey Konovalov <andreyknvl@...il.com>, Juergen Gross <jgross@...e.com>, 
	Boris Ostrovsky <boris.ostrovsky@...cle.com>, Thomas Gleixner <tglx@...utronix.de>, 
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, linux-nvme@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, kvm@...r.kernel.org, 
	virtualization@...ts.linux.dev, linux-integrity@...r.kernel.org, 
	linux-kbuild@...r.kernel.org, llvm@...ts.linux.dev, 
	Winston Wen <wentao@...ontech.com>, kasan-dev@...glegroups.com, 
	xen-devel@...ts.xenproject.org, Changbin Du <changbin.du@...el.com>, 
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH RFC v3 0/8] kernel-hacking: introduce CONFIG_NO_AUTO_INLINE

On Sun, May 4, 2025 at 3:14 AM Bart Van Assche <bvanassche@....org> wrote:

> If this is for test builds only, has it been consider to add
> -fno-inline-functions as a local change in the top-level Makefile?

The issue here is that the current kernel cannot be compiled when
these compiler options that reduce inlining behavior are added.