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MIPS: smp-cps: function to determine whether CPS SMP is in use 

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@imgtec.com>
This commit is contained in:
Paul Burton 2014-03-14 16:06:16 +00:00
parent 245a7868d2
commit 68c1232f51
2 changed files with 8 additions and 0 deletions
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2
arch/mips/include/asm/smp-cps.h
View File

@ -31,6 +31,8 @@ extern void mips_cps_core_init(void);
extern struct vpe_boot_config *mips_cps_boot_vpes(void); extern struct vpe_boot_config *mips_cps_boot_vpes(void);
extern bool mips_cps_smp_in_use(void);
#else /* __ASSEMBLY__ */ #else /* __ASSEMBLY__ */
.extern mips_cps_bootcfg; .extern mips_cps_bootcfg;

6
arch/mips/kernel/smp-cps.c
View File

@ -260,6 +260,12 @@ static struct plat_smp_ops cps_smp_ops = {
.cpus_done = cps_cpus_done, .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) int register_cps_smp_ops(void)
{ {
if (!mips_cm_present()) { if (!mips_cm_present()) {