From: Oleg Nesterov oleg@redhat.com

[ Upstream commit 975776841e689dd8ba36df9fa72ac3eca3c2957a ]

kernel/sched/isolation.c obviously makes no sense without CONFIG_SMP, but the Kconfig entry we have right now:

config CPU_ISOLATION bool "CPU isolation" depends on SMP || COMPILE_TEST

allows the creation of pointless .config's which cause build failures.

Reported-by: kernel test robot lkp@intel.com Signed-off-by: Oleg Nesterov oleg@redhat.com Signed-off-by: Ingo Molnar mingo@kernel.org Link: https://lore.kernel.org/r/20250330134955.GA7910@redhat.com

Closes: https://lore.kernel.org/oe-kbuild-all/202503260646.lrUqD3j5-lkp@intel.com/ Signed-off-by: Sasha Levin sashal@kernel.org --- init/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/init/Kconfig b/init/Kconfig index 1105cb53f391a..8b630143c720f 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -689,7 +689,7 @@ endmenu # "CPU/Task time and stats accounting"

config CPU_ISOLATION bool "CPU isolation" - depends on SMP || COMPILE_TEST + depends on SMP default y help Make sure that CPUs running critical tasks are not disturbed by