x86/smpboot: remove redundant CONFIG_SCHED_SMT

FirstLoveLife · Peter Zijlstra · commit 992de2b02509 · 2025-07-14T10:59:34.000+02:00
On x86 CONFIG_SCHED_SMT is default y if SMP is enabled, so let's simply drop CONFIG_SCHED_SMT. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Li Chen <chenl311@chinatelecom.cn> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com> Tested-by: K Prateek Nayak <kprateek.nayak@amd.com> Link: https://lore.kernel.org/r/20250710105715.66594-3-me@linux.beauty
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
@@ -484,9 +484,7 @@ static void __init build_sched_topology(void)
 {
 	int i = 0;
 
-#ifdef CONFIG_SCHED_SMT
 	x86_topology[i++] = SDTL_INIT(cpu_smt_mask, cpu_smt_flags, SMT);
-#endif
 #ifdef CONFIG_SCHED_CLUSTER
 	x86_topology[i++] = SDTL_INIT(cpu_clustergroup_mask, x86_cluster_flags, CLS);
 #endif

Original file line number	Diff line number	Diff line change
`@@ -484,9 +484,7 @@ static void __init build_sched_topology(void)`
`484`	`484`	`{`
`485`	`485`	`int i = 0;`
`486`	`486`
`487`		`-#ifdef CONFIG_SCHED_SMT`
`488`	`487`	`x86_topology[i++] = SDTL_INIT(cpu_smt_mask, cpu_smt_flags, SMT);`
`489`		`-#endif`
`490`	`488`	`#ifdef CONFIG_SCHED_CLUSTER`
`491`	`489`	`x86_topology[i++] = SDTL_INIT(cpu_clustergroup_mask, x86_cluster_flags, CLS);`
`492`	`490`	`#endif`