Hi all, After merging the tip tree, today's linux-next build (x86_64 allmodconfig) failed like this: arch/x86/kernel/process.c: In function 'mwait_idle': /scratch/sfr/next/arch/x86/kernel/process.c:434:3: error: implicit declaration of function '__monitor' [-Werror=implicit-function-declaration] __monitor((void *)¤t_thread_info()->flags, 0, 0); ^ arch/x86/kernel/process.c:437:4: error: implicit declaration of function '__sti_mwait' [-Werror=implicit-function-declaration] __sti_mwait(0, 0); ^ Caused by commit 16824255394f ("x86, acpi, idle: Restructure the mwait idle routines") interacting with commit 7760518cce95 ("x86 idle: restore mwait_idle()") from the idle tree. I am not sure how to fix this so I just reverted the idle tree commit for now (since it reverted cleanly). Please let me know if there is a better solution. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au