x86/smp: Export symbol cpu_clustergroup_mask()

Kan Liang · Peter Zijlstra · commit c3dd1995620c · 2023-11-17T10:54:52.000+01:00
Intel cstate PMU driver will invoke the topology_cluster_cpumask() to retrieve the CPU mask of a cluster. A modpost error is triggered since the symbol cpu_clustergroup_mask is not exported. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20231116142245.1233485-2-kan.liang@linux.intel.com
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
@@ -757,6 +757,7 @@ const struct cpumask *cpu_clustergroup_mask(int cpu)
 {
 	return cpu_l2c_shared_mask(cpu);
 }
+EXPORT_SYMBOL_GPL(cpu_clustergroup_mask);
 
 static void impress_friends(void)
 {

Original file line number	Diff line number	Diff line change
`@@ -757,6 +757,7 @@ const struct cpumask *cpu_clustergroup_mask(int cpu)`
`757`	`757`	`{`
`758`	`758`	`return cpu_l2c_shared_mask(cpu);`
`759`	`759`	`}`
	`760`	`+EXPORT_SYMBOL_GPL(cpu_clustergroup_mask);`
`760`	`761`
`761`	`762`	`static void impress_friends(void)`
`762`	`763`	`{`