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Currently we have a maze of configuration variables that determine the maximum slab size. Worst of all it seems to vary between SLAB and SLUB. So define a common maximum size for kmalloc. For conveniences sake we use the maximum size ever supported which is 32 MB. We limit the maximum size to a lower limit if MAX_ORDER does not allow such large allocations. For many architectures this patch will have the effect of adding large kmalloc sizes. x86_64 adds 5 new kmalloc sizes. So a small amount of memory will be needed for these caches (contemporary SLAB has dynamically sizeable node and cpu structure so the waste is less than in the past) Most architectures will then be able to allocate object with sizes up to MAX_ORDER. We have had repeated breakage (in fact whenever we doubled the number of supported processors) on IA64 because one or the other struct grew beyond what the slab allocators supported. This will avoid future issues and f.e. avoid fixes for 2k and 4k cpu support. CONFIG_LARGE_ALLOCS is no longer necessary so drop it. It fixes sparc64 with SLAB. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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This port to the NEC V850E processor supports the following platforms:
"sim"
The gdb v850e simulator (CONFIG_V850E_SIM).
"rte-ma1-cb"
The Midas labs RTE-V850E/MA1-CB and RTE-V850E/NB85E-CB evaluation
boards (CONFIG_RTE_CB_MA1 and CONFIG_RTE_CB_NB85E). This support
has only been tested when running with the Multi-debugger monitor
ROM (for the Green Hills Multi debugger). The optional NEC
Solution Gear RTE-MOTHER-A motherboard is also supported, which
allows PCI boards to be used (CONFIG_RTE_MB_A_PCI).
"rte-me2-cb"
The Midas labs RTE-V850E/ME2-CB evaluation board (CONFIG_RTE_CB_ME2).
This has only been tested using a kernel downloaded via an ICE
connection using the Multi debugger. Support for the RTE-MOTHER-A is
present, but hasn't been tested (unlike the other Midas labs cpu
boards, the RTE-V850E/ME2-CB includes an ethernet adaptor).
"as85ep1"
The NEC AS85EP1 V850E evaluation chip/board (CONFIG_V850E_AS85EP1).
"anna"
The NEC `Anna' (board/chip) implementation of the V850E2 processor
(CONFIG_V850E2_ANNA).
"sim85e2c", "sim85e2s"
The sim85e2c and sim85e2s simulators, which are verilog simulations
of the V850E2 NA85E2C/NA85E2S cpu cores (CONFIG_V850E2_SIM85E2C and
CONFIG_V850E2_SIM85E2S).
"fpga85e2c"
A FPGA implementation of the V850E2 NA85E2C cpu core
(CONFIG_V850E2_FPGA85E2C).
To get a default kernel configuration for a particular platform, you can
use a <platform>_defconfig make target (e.g., "make rte-me2-cb_defconfig");
to see which default configurations are possible, look in the directory
"arch/v850/configs".
Porting to anything with a V850E/MA1 or MA2 processor should be simple.
See the file <asm-v850/machdep.h> and the files it includes for an example of
how to add platform/chip-specific support.