The core power down state for cpuidle will require that the CPS SMP
implementation is in use. This patch provides a mips_cps_smp_in_use
function which determines whether or not the CPS SMP implementation is
currently in use.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
---
arch/mips/include/asm/smp-cps.h | 2 ++
arch/mips/kernel/smp-cps.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/arch/mips/include/asm/smp-cps.h b/arch/mips/include/asm/smp-cps.h
index d49279e..324df2c 100644
--- a/arch/mips/include/asm/smp-cps.h
+++ b/arch/mips/include/asm/smp-cps.h
@@ -31,6 +31,8 @@ extern void mips_cps_core_init(void);
extern struct vpe_boot_config *mips_cps_boot_vpes(void);
+extern bool mips_cps_smp_in_use(void);
+
#else /* __ASSEMBLY__ */
.extern mips_cps_bootcfg;
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index af90e82..c7879fb 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -260,6 +260,12 @@ static struct plat_smp_ops cps_smp_ops = {
.cpus_done = cps_cpus_done,
};
+bool mips_cps_smp_in_use(void)
+{
+ extern struct plat_smp_ops *mp_ops;
+ return mp_ops == &cps_smp_ops;
+}
+
int register_cps_smp_ops(void)
{
if (!mips_cm_present()) {
--
1.8.5.3
