On Mon, May 23, 2011 at 12:09 PM, Ingo Molnar <mingo@xxxxxxx> wrote: > 24594a2bfcaa: [PATCH] x86-64 merge > > - Remove some unneeded prefetches. Just two are enough to kickstart > the hardware prefetcher. > > But despite touching prefetches explicitly, this too sloppily left the (now > dangling) prefetch.h include file around. Well, developer removes include, developer risks compile breakage. > Anway, what i tried to demonstrate with this mail how much *real* slowdown in > the kernel build our current header file bloat is causing. We could literally > halve our kernel build times if we fixed this! News at 11! Ingo, you're running x86 compile tests nonstop, you can very well make asm-x86 headers the strictest ones to make problem less problematic. You (x86 merge people), removed header guards from quite a lot of asm-x86/*.h files breaking gcc "do not open(2) second time" heuristics. It became better since last I've noticed it, but maybe start with that? -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
