On 22 July 2012 20:01, Thomas Backlund <[email protected]> wrote: > 22.07.2012 18:02, Alexandre Ferrando skrev: >> Summary: Linux kernel 3.4.6 fails to build in some cases when >> CONFIG_NO_HZ is set >> >> Full description: Kernel build using configurations [ 0 ] (mine, >> trying to build the zen kernel) and [ 1 ] (from someone using >> slackware) fail to build with this error message when CONFIG_NO_HZ is >> set: >> >> kernel/built-in.o: In function `tick_nohz_stop_sched_tick.isra.9': >> tick-sched.c:(.text+0x4a3e9): undefined reference to `calc_load_enter_idle' >> kernel/built-in.o: In function `tick_nohz_idle_exit': >> (.text+0x4a767): undefined reference to `calc_load_exit_idle' >> >> Unsetting CONFIG_NO_HZ solves the issue. >> >> However, CONFIG_NO_HZ seems not to be the root of the problem because >> this configuration [ 2 ] of the zen kernel and Arch's stock kernel [ 3 >> ] both build with CONFIG_NO_HZ set > > This fallout comes from the BFS scheduler patch in zen kernel that is > not updated/adapted for the: > > sched-nohz-rewrite-and-fix-load-avg-computation-again.patch > > that went into 3.4.6 > > > -- > Thomas > >
Thank you for pointing out the root of the issue. I apologize for bringing in an issue related to code not included into the mainstream kernel. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
