Messages in this thread | | | Date | Wed, 2 Nov 2005 19:12:01 +0100 | From | Adrian Bunk <> | Subject | Re: New (now current development process) |
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On Wed, Nov 02, 2005 at 12:48:52PM -0500, Dave Jones wrote: > On Wed, Nov 02, 2005 at 07:54:04AM -0800, Linus Torvalds wrote: > > > > For your last suggestion, maybe someone can automate running Andi's > > > bloat-o-meter? I think the hard part is maintaining comparable configs. > > > > Yes. And we should probably make -Os the default. Apparently Fedora > > already does that by just forcibly hacking the Kconfig files. > > (excuse any typos, this wireless connection is god-awful) > We do. We rip out the dependancyon CONFIG_EMBEDDED, and build > with OPTIMISE_FOR_SIZE set. At least we usually do. > Once every so often, we hit something which throws a spanner > in the works, like the "x86-64 doesn't boot any more" problem > that was fixed by the patch that Alexandre posted earlier > this week. > > Most of the time now, when we hit bugs with -Os, it seems to be due > to broken asm constraints in the kernel rather than actual > gcc bugs, but of course, they also occur from time to time, > whereas the same code works just fine with -O2. > I think part of th reason for this is exactly because it > doesn't get a great deal of testing.
Is the usage of -Os in Fedora based on actual measurements?
> Dave
cu Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed
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