Date: Sun, 21 Jul 2013 14:51:26 -0600 From: Warner Losh <imp@bsdimp.com> To: Juli Mallett <juli@clockworksquid.com> Cc: Warner Losh <imp@freebsd.org>, "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: Can we undo the octeon hack? Message-ID: <F0B68A50-B5BF-426E-874C-1EFC03CAEAEB@bsdimp.com> In-Reply-To: <6401792509903023722@unknownmsgid> References: <CAJ-VmonJg2BhBdckFb1O79ZnWrXKZhT%2Bku9SjuswLui6iZC1Ow@mail.gmail.com> <6401792509903023722@unknownmsgid>
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These should really be in the std.foo files for each specific subport. That way atheros could have one set, and octeon could have another.
I do know that we don't do the std.foo thing for the atheros config files, but we really should start, and this would be a good place to start...
Warner
On Jul 21, 2013, at 12:54 PM, Juli Mallett wrote:
> Making it possible to override each value would be ideal but
> cumbersome. If you want to do that, by all means do!
>
> Thanks,
> Juli.
>
> On 2013-07-21, at 11:44, Adrian Chadd <adrian@freebsd.org> wrote:
>
>> Hi Juli/Warner,
>>
>> Is it possible to undo this particular hack, and allow these values to
>> be overridden in the kernel config files?
>>
>> from kern.pre.mk
>>
>> CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
>> CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include
>> opt_global.h
>> .if ${COMPILER_TYPE} != "clang"
>> CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
>> .if ${MACHINE_CPUARCH} != "mips"
>> CFLAGS+= --param inline-unit-growth=100
>> CFLAGS+= --param large-function-growth=1000
>> .else
>> # XXX Actually a gross hack just for Octeon because of the Simple Executive.
>> CFLAGS+= --param inline-unit-growth=10000
>> CFLAGS+= --param large-function-growth=100000
>> CFLAGS+= --param max-inline-insns-single=10000
>> .endif
>> .endif
>>
>> I'd like to be able to experiment with different inline settings in
>> order to try and squeeze kernels down to be smaller.
>>
>> Thanks!
>>
>>
>> -adrian
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