MIPS: Allow __cpu_number_map to be larger than NR_CPUS
In systems where the CPU id space is sparse, this allows a smaller
NR_CPUS to be chosen, thus keeping internal data structures smaller.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Carlos Munoz <cmunoz@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17388/
[jhogan@kernel.org: Add depends on SMP to fix
"warning: symbol value '' invalid for MIPS_NR_CPU_NR_MAP"]
Signed-off-by: James Hogan <jhogan@kernel.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index cb7fcc4..b6af63f 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -915,7 +915,8 @@
select USE_OF
select ARCH_SPARSEMEM_ENABLE
select SYS_SUPPORTS_SMP
- select NR_CPUS_DEFAULT_16
+ select NR_CPUS_DEFAULT_64
+ select MIPS_NR_CPU_NR_MAP_1024
select BUILTIN_DTB
select MTD_COMPLEX_MAPPINGS
select SYS_SUPPORTS_RELOCATABLE
@@ -2725,6 +2726,15 @@
config MIPS_PERF_SHARED_TC_COUNTERS
bool
+config MIPS_NR_CPU_NR_MAP_1024
+ bool
+
+config MIPS_NR_CPU_NR_MAP
+ int
+ depends on SMP
+ default 1024 if MIPS_NR_CPU_NR_MAP_1024
+ default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
+
#
# Timer Interrupt Frequency Configuration
#
