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[5/6] arm64: cpufeature: Export get_cpu_with_amu_feat func

Message ID 20230418113459.12860-6-sumitg@nvidia.com (mailing list archive)
State New, archived
Delegated to: viresh kumar
Headers show
Series CPPC_CPUFREQ improvements for Tegra241 | expand

Commit Message

Sumit Gupta April 18, 2023, 11:34 a.m. UTC 
Export the get_cpu_with_amu_feat() function for use by
"cppc_cpufreq" to check if any CPU implements ARM's
Activity Monitor Unit (AMU). If AMU is available, then
for re-constructing the current CPU freq from its
counters, queue work on target CPU to read the counters
in a single call instead of reading them in separate
smp calls.

Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
---
 arch/arm64/kernel/cpufeature.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index d9345e9c0226..ec31da7043eb 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -1917,6 +1917,7 @@  int get_cpu_with_amu_feat(void)
 {
 	return cpumask_any(&amu_cpus);
 }
+EXPORT_SYMBOL_GPL(get_cpu_with_amu_feat);
 
 static void cpu_amu_enable(struct arm64_cpu_capabilities const *cap)
 {