09.08.2012 21:53, KP Kirchdoerfer пишет: > Hi > I tried to build a recent kernel (3.2.25 and 3.2.26), but both failed > with the error: > > > CC init/version.o > LD init/built-in.o > LD .tmp_vmlinux1 > kernel/built-in.o: In function `tick_nohz_stop_sched_tick': > (.text+0x2f55c): undefined reference to `calc_load_enter_idle' > kernel/built-in.o: In function `tick_nohz_restart_sched_tick': > (.text+0x2f7fd): undefined reference to `update_cpu_load_nohz' > kernel/built-in.o: In function `tick_nohz_restart_sched_tick': > (.text+0x2f819): undefined reference to `calc_load_exit_idle' > make[3]: *** [.tmp_vmlinux1] Error 1 > make[2]: *** [sub-make] Error 2 > make[1]: *** [all] Error 2 > make[1]: Leaving directory > `/opt/buildtool-master/source/i486-unknown-linux-uclibc/linux/linux-i686 > > Google searches make me believe that this related to the BFS scheduler > patch... > > I've posted results using the BFS scheduler before, which gave IMHO > mixed results. > So if BFS is really the reason for the error above, I'd ask if using BFS > is worth the unability to update the 3.2.x kernel. > > Of course I may be wrong in my analysis. > kp > Ok, we can comment bfs patch now if it causes troubles. Main reason for bfs including - memory saving (near 300 kb) at no cost + possible better userland performance.
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