Commit 3e3114ac authored by Alexander Sverdlin's avatar Alexander Sverdlin Committed by Thomas Bogendoerfer
Browse files

MIPS: Introduce CAVIUM_RESERVE32 Kconfig option 



This options is used to reserve a shared memory region for user processes
to use for hardware memory buffers. The actual code to support the option
comes in the following patch.

Signed-off-by: default avatarCorey Minyard <cminyard@mvista.com>
Signed-off-by: default avatarAlexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent d3cd4d9f

arch/mips/cavium-octeon/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -67,6 +67,18 @@ config CAVIUM_OCTEON_LOCK_L2_MEMCPY 
	help

	  Lock the kernel's implementation of memcpy() into L2.



config CAVIUM_RESERVE32

	int "Memory to reserve for user processes shared region (MB)"

	range 0 1536

	default "0"

	help

	  Reserve a shared memory region for user processes to use for hardware

	  memory buffers. This is required for 32bit applications to be able to

	  send and receive packets directly. Applications access this memory by

	  memory mapping /dev/mem for the addresses in /proc/octeon_info. For

	  optimal performance with HugeTLBs, keep this size an even number of

	  megabytes.



config OCTEON_ILM

	tristate "Module to measure interrupt latency using Octeon CIU Timer"

	help