Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 8 Jan 2009 06:42:15 +0100 | From | Sam Ravnborg <> | Subject | Re: kbuild vs ccache |
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On Wed, Jan 07, 2009 at 08:03:36PM -0800, Roland McGrath wrote: > > make clean; ccache -s > before-`git describe`; make -j9; ccache -s > after-`git describe`; diff -u {before,after}-`git describe` > > v2.6.28: > > -cache hit 737661 > -cache miss 979624 > -called for link 78268 > +cache hit 738093 = +432 > +cache miss 980524 = +900 > +called for link 78289 = +21 > multiple source files 373 > compile failed 5679 > preprocessor error 1594 > -not a C/C++ file 44512 > +not a C/C++ file 44549 = +37 > > 1332 cacheable > 58 uncacheable > > > v2.6.28-7485-g9e42d0c: > > -cache hit 738096 = +9 > +cache hit 738105 > cache miss 980524 = +0 > -called for link 78293 > +called for link 79659 = +1366 > multiple source files 373 > compile failed 5679 > preprocessor error 1594 > -not a C/C++ file 44549 = +1384 > +not a C/C++ file 45933 > > 9 cacheable > 2750 uncacheable > > > What changed?
Before we did a straight .c -> .o Now we do .c -> .s -> .o to mark __crc_ symbols static so we can kill them when stripping modules.
It is already being discussed in another thread. See "[REGRESSION] Recent change to kernel spikes out ccache/distcc"
Sam
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