Messages in this thread | | | Date | Tue, 26 Aug 2008 11:47:01 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c - bisected |
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On Tue, 26 Aug 2008, Adrian Bunk wrote: > > I added "-fno-inline-functions-called-once -fno-early-inlining" to > KBUILD_CFLAGS, and (with gcc 4.3) that increased the size of my kernel > image by 2%.
Btw, did you check with just "-fno-inline-functions-called-once"?
The -fearly-inlining decisions _should_ be mostly right. If gcc sees early that a function is so small (even without any constant propagation etc) that it can be inlined, it's probably right.
The inline-functions-called-once thing is what causes even big functions to be inlined, and that's where you find the big downsides too (eg the stack usage).
Linus
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