diff options
Diffstat (limited to 'arch/tile/Kconfig')
| -rw-r--r-- | arch/tile/Kconfig | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index 74239dd77e06..fe128816c448 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -14,6 +14,7 @@ config TILE select HAVE_SYSCALL_WRAPPERS if TILEGX select SYS_HYPERVISOR select ARCH_HAVE_NMI_SAFE_CMPXCHG + select GENERIC_CLOCKEVENTS # FIXME: investigate whether we need/want these options. # select HAVE_IOREMAP_PROT @@ -47,7 +48,12 @@ config NEED_PER_CPU_PAGE_FIRST_CHUNK config SYS_SUPPORTS_HUGETLBFS def_bool y -config GENERIC_CLOCKEVENTS +# Support for additional huge page sizes besides HPAGE_SIZE. +# The software support is currently only present in the TILE-Gx +# hypervisor. TILEPro in any case does not support page sizes +# larger than the default HPAGE_SIZE. +config HUGETLB_SUPER_PAGES + depends on HUGETLB_PAGE && TILEGX def_bool y # FIXME: tilegx can implement a more efficient rwsem. @@ -109,16 +115,14 @@ config HVC_TILE select HVC_DRIVER def_bool y -# Please note: TILE-Gx support is not yet finalized; this is -# the preliminary support. TILE-Gx drivers are only provided -# with the alpha or beta test versions for Tilera customers. config TILEGX - depends on EXPERIMENTAL bool "Building with TILE-Gx (64-bit) compiler and toolchain" +config TILEPRO + def_bool !TILEGX + config 64BIT - depends on TILEGX - def_bool y + def_bool TILEGX config ARCH_DEFCONFIG string @@ -139,7 +143,30 @@ config NR_CPUS smaller kernel memory footprint results from using a smaller value on chips with fewer tiles. -source "kernel/time/Kconfig" +if TILEGX + +choice + prompt "Kernel page size" + default PAGE_SIZE_64KB + help + This lets you select the page size of the kernel. For best + performance on memory-intensive applications, a page size of 64KB + is recommended. For workloads involving many small files, many + connections, etc., it may be better to select 16KB, which uses + memory more efficiently at some cost in TLB performance. + + Note that this option is TILE-Gx specific; currently + TILEPro page size is set by rebuilding the hypervisor. + +config PAGE_SIZE_16KB + bool "16KB" + +config PAGE_SIZE_64KB + bool "64KB" + +endchoice + +endif source "kernel/Kconfig.hz" |