Commit 968a0734 authored Mar 27, 2014 by Paul Burton Committed by Ralf Baechle Mar 31, 2014

MIPS: MT: core_nvpes function to retrieve VPE count



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@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6665/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent d94c90f8

arch/mips/include/asm/mipsmtregs.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -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;