Messages in this thread | | | Date | Sun, 11 Nov 2001 14:16:36 +0100 | From | Martin Dalecki <> | Subject | Re: Using %cr2 to reference "current" |
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Alan Cox wrote: > > > With the following options enabled we get: > > -freg-struct-return -mrtd -mregparm=3 > > > > text data bss dec hex filename > > 1302372 260804 288080 1851256 1c3f78 vmlinux > > > > Quite significant difference if you ask me!!! > > 30K is nice have but still a scratch on the surface compared with 500K 8) > > > in a saving of about 2.3% in code size. This may not sound grat in > > relative > > numbers, but for a compiler designer this would already sound hilarious > > and in > > absolute numbers it's: 29760 bytes. Not withstanding the speed > > improvement... > > The obvious question is - have you tried running the kernel built like that > with any asm fixups needed ?
I have now a nice kernel at home, compiled with -mredparm=3 up and going. Full interactive session, full kernel compiles working, X11 whatsup. Everything seems fine so far.
However I still have to build a RPM-feature grade kernel and test it. Further the precise benchmarking will take some time as well. I think that I will in esp. use the byte benchmark, since it is quite "kernel intensive" at some parts. Patch will follow on monday (if nothing comes in between...). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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