This function simply returns the number of VPEs present in the current
core, or 1 if the core does not implement the MT ASE. In SMP kernels
this will typically equal smp_num_siblings, however it will also be
usable in UP kernels and helps prepare for the possibility of a
heterogenous system where the VPE count is not the same across all
cores.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
---
This one wasn't present in the original series, but needs to preceed
"MIPS: fix core number detection for MT cores". Or feel free to squash
it into that patch if you prefer. This function can also be used in a
few other places but in the interests of not making your life even more
difficult I'll leave that cleanup for later.
---
arch/mips/include/asm/mipsmtregs.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/mips/include/asm/mipsmtregs.h b/arch/mips/include/asm/mipsmtregs.h
index 38b7704..6efa79a 100644
--- a/arch/mips/include/asm/mipsmtregs.h
+++ b/arch/mips/include/asm/mipsmtregs.h
@@ -176,6 +176,17 @@
#ifndef __ASSEMBLY__
+static inline unsigned core_nvpes(void)
+{
+ unsigned conf0;
+
+ if (!cpu_has_mipsmt)
+ return 1;
+
+ conf0 = read_c0_mvpconf0();
+ return ((conf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT) + 1;
+}
+
static inline unsigned int dvpe(void)
{
int res = 0;
--
1.8.5.3
