[PATCH AUTOSEL 6.6] sched/isolation: Make CONFIG_CPU_ISOLATION depend on CONFIG_SMP

[Sasha Levin]

From: Oleg Nesterov <oleg@xxxxxxxxxx>

[ 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@xxxxxxxxx>
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20250330134955.GA7910@xxxxxxxxxx

Closes: https://lore.kernel.org/oe-kbuild-all/202503260646.lrUqD3j5-lkp@xxxxxxxxx/
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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
-- 
2.39.5