powerpc: Update NUMA Kconfig description & help text

Update the NUMA Kconfig description to match other architectures, and
add some help text. Shamelessly borrowed from x86/arm64.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20201124120547.1940635-3-mpe@ellerman.id.au

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 4d688b42635361085233e0c4e798cb9e6d50fe40..7f4995b245a33048a0d6d3b2e4fe6449cbfef701 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -659,9 +659,15 @@ config IRQ_ALL_CPUS
          reported with SMP Power Macintoshes with this option enabled.
 
 config NUMA
-       bool "NUMA support"
+       bool "NUMA Memory Allocation and Scheduler Support"
        depends on PPC64 && SMP
        default y if PPC_PSERIES || PPC_POWERNV
+       help
+         Enable NUMA (Non-Uniform Memory Access) support.
+
+         The kernel will try to allocate memory used by a CPU on the
+         local memory controller of the CPU and add some more
+         NUMA awareness to the kernel.
 
 config NODES_SHIFT
        int