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Date: Thu, 11 Aug 2022 16:34:29 +0200 From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com> To: menglong8.dong@...il.com Cc: kuba@...nel.org, ojeda@...nel.org, ndesaulniers@...gle.com, davem@...emloft.net, edumazet@...gle.com, pabeni@...hat.com, asml.silence@...il.com, imagedong@...cent.com, luiz.von.dentz@...el.com, vasily.averin@...ux.dev, jk@...econstruct.com.au, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [PATCH net-next] net: skb: prevent the split of kfree_skb_reason() by gcc On Thu, Aug 11, 2022 at 2:07 PM <menglong8.dong@...il.com> wrote: > > diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h > index 445e80517cab..51f7c13bca98 100644 > --- a/include/linux/compiler_attributes.h > +++ b/include/linux/compiler_attributes.h > @@ -371,4 +371,6 @@ > */ > #define __weak __attribute__((__weak__)) > > +#define __nofnsplit __attribute__((optimize("O1"))) > + > #endif /* __LINUX_COMPILER_ATTRIBUTES_H */ Two notes on this: please use the double underscore form: `__optimize__` and keep the file sorted (it should go after `__overloadable__`, since we sort by the actual attribute name). Thanks! Cheers, Miguel
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