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Message-id: <alpine.LFD.2.00.0901021709480.3590@localhost.localdomain> Date: Fri, 02 Jan 2009 17:17:52 -0500 (EST) From: Len Brown <lenb@...nel.org> To: Sam Ravnborg <sam@...nborg.org> Cc: Andi Kleen <andi@...stfloor.org>, linux-acpi@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [incremental-PATCH-for-Sam's-Review] ACPI: use ccflags-y instead of EXTRA_CFLAGS > > --- a/drivers/acpi/Makefile ... > > +ccflags-y := -Os > The conversion from ACPI_CFLAGS to ccflags-y is fine. > And if acpi really require -Os then this part is also OK - > I just did not get *why* acpi needs -Os ACPI does not "need" -Os. However, ACPI in Linux has been built with -Os since 2.4 on the assumption that since ACPI should never be performance critical, that it was best to simply have it consume as little space as possible. It appears that the entire kernel is now built with -Os by default, so it looks like this is now redundant in the default case and will have an effect only when somebody disables CONFIG_CC_OPTIMIZE_FOR_SIZE to build with -O2. So I'm willing to delete -Os from the ACPI Makefile in the interest of simplicity. thanks, Len Brown, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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