diff options
Diffstat (limited to 'arch/tile/Kconfig')
| -rw-r--r-- | arch/tile/Kconfig | 182 |
1 files changed, 135 insertions, 47 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index 0249b8b4db5..4f3006b600e 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -3,15 +3,30 @@ config TILE def_bool y + select HAVE_PERF_EVENTS + select USE_PMC if PERF_EVENTS + select HAVE_DMA_ATTRS + select HAVE_DMA_API_DEBUG select HAVE_KVM if !TILEGX select GENERIC_FIND_FIRST_BIT - select USE_GENERIC_SMP_HELPERS + select SYSCTL_EXCEPTION_TRACE select CC_OPTIMIZE_FOR_SIZE - select HAVE_GENERIC_HARDIRQS + select HAVE_DEBUG_KMEMLEAK select GENERIC_IRQ_PROBE select GENERIC_PENDING_IRQ if SMP select GENERIC_IRQ_SHOW + select HAVE_DEBUG_BUGVERBOSE + select VIRT_TO_BUS select SYS_HYPERVISOR + select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS + select ARCH_HAVE_NMI_SAFE_CMPXCHG + select GENERIC_CLOCKEVENTS + select MODULES_USE_ELF_RELA + select HAVE_ARCH_TRACEHOOK + select HAVE_SYSCALL_TRACEPOINTS + select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE + select HAVE_DEBUG_STACKOVERFLOW + select ARCH_WANT_FRAME_POINTERS # FIXME: investigate whether we need/want these options. # select HAVE_IOREMAP_PROT @@ -30,9 +45,6 @@ config MMU config GENERIC_CSUM def_bool y -config SEMAPHORE_SLEEPERS - def_bool y - config HAVE_ARCH_ALLOC_REMAP def_bool y @@ -45,22 +57,25 @@ config NEED_PER_CPU_PAGE_FIRST_CHUNK config SYS_SUPPORTS_HUGETLBFS def_bool y -config GENERIC_TIME +# 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 -config GENERIC_CLOCKEVENTS +config GENERIC_TIME_VSYSCALL def_bool y +# Enable PMC if PERF_EVENTS, OPROFILE, or WATCHPOINTS are enabled. +config USE_PMC + bool + # FIXME: tilegx can implement a more efficient rwsem. config RWSEM_GENERIC_SPINLOCK def_bool y -# We have a very flat architecture from a migration point of view, -# so save boot time by presetting this (particularly useful on tile-sim). -config DEFAULT_MIGRATION_COST - int - default "10000000" - # We only support gcc 4.4 and above, so this should work. config ARCH_SUPPORTS_OPTIMIZED_INLINING def_bool y @@ -71,6 +86,12 @@ config ARCH_PHYS_ADDR_T_64BIT config ARCH_DMA_ADDR_T_64BIT def_bool y +config NEED_DMA_MAP_STATE + def_bool y + +config ARCH_HAS_DMA_SET_COHERENT_MASK + bool + config LOCKDEP_SUPPORT def_bool y @@ -96,35 +117,40 @@ config STRICT_DEVMEM config SMP def_bool y -# Allow checking for compile-time determined overflow errors in -# copy_from_user(). There are still unprovable places in the -# generic code as of 2.6.34, so this option is not really compatible -# with -Werror, which is more useful in general. -config DEBUG_COPY_FROM_USER - def_bool n - config HVC_TILE + depends on TTY select HVC_DRIVER + select HVC_IRQ if TILEGX 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" + bool "Building for TILE-Gx (64-bit) processor" + select SPARSE_IRQ + select GENERIC_IRQ_LEGACY_ALLOC_HWIRQ + select HAVE_FUNCTION_TRACER + select HAVE_FUNCTION_TRACE_MCOUNT_TEST + select HAVE_FUNCTION_GRAPH_TRACER + select HAVE_DYNAMIC_FTRACE + select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_KPROBES + select HAVE_KRETPROBES + select HAVE_ARCH_KGDB + +config TILEPRO + def_bool !TILEGX config 64BIT - depends on TILEGX - def_bool y + def_bool TILEGX config ARCH_DEFCONFIG string - default "arch/tile/configs/tile_defconfig" if !TILEGX + default "arch/tile/configs/tilepro_defconfig" if !TILEGX default "arch/tile/configs/tilegx_defconfig" if TILEGX source "init/Kconfig" +source "kernel/Kconfig.freezer" + menu "Tilera-specific configuration" config NR_CPUS @@ -137,7 +163,30 @@ 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" @@ -164,7 +213,7 @@ config SYSVIPC_COMPAT def_bool y depends on COMPAT && SYSVIPC -# We do not currently support disabling HIGHMEM on tile64 and tilepro. +# We do not currently support disabling HIGHMEM on tilepro. config HIGHMEM bool # "Support for more than 512 MB of RAM" default !TILEGX @@ -183,6 +232,22 @@ config HIGHMEM If unsure, say "true". +config ZONE_DMA + def_bool y + +config IOMMU_HELPER + bool + +config NEED_SG_DMA_LENGTH + bool + +config SWIOTLB + bool + default TILEGX + select IOMMU_HELPER + select NEED_SG_DMA_LENGTH + select ARCH_HAS_DMA_SET_COHERENT_MASK + # We do not currently support disabling NUMA. config NUMA bool # "NUMA Memory Allocation and Scheduler Support" @@ -242,6 +307,7 @@ endchoice config PAGE_OFFSET hex + depends on !64BIT default 0xF0000000 if VMSPLIT_3_75G default 0xE0000000 if VMSPLIT_3_5G default 0xB0000000 if VMSPLIT_2_75G @@ -253,6 +319,8 @@ config PAGE_OFFSET source "mm/Kconfig" +source "kernel/Kconfig.preempt" + config CMDLINE_BOOL bool "Built-in kernel command line" default n @@ -300,7 +368,7 @@ config CMDLINE_OVERRIDE config VMALLOC_RESERVE hex - default 0x1000000 + default 0x2000000 config HARDWALL bool "Hardwall support to allow access to user dynamic network" @@ -309,11 +377,19 @@ config HARDWALL config KERNEL_PL int "Processor protection level for kernel" range 1 2 - default "1" + default 2 if TILEGX + default 1 if !TILEGX ---help--- - This setting determines the processor protection level the - kernel will be built to run at. Generally you should use - the default value here. + Since MDE 4.2, the Tilera hypervisor runs the kernel + at PL2 by default. If running under an older hypervisor, + or as a KVM guest, you must run at PL1. (The current + hypervisor may also be recompiled with "make HV_PL=2" to + allow it to run a kernel at PL1, but clients running at PL1 + are not expected to be supported indefinitely.) + + If you're not sure, don't change the default. + +source "arch/tile/gxio/Kconfig" endmenu # Tilera-specific configuration @@ -323,6 +399,9 @@ config PCI bool "PCI support" default y select PCI_DOMAINS + select GENERIC_PCI_IOMAP + select TILE_GXIO_TRIO if TILEGX + select PCI_MSI if TILEGX ---help--- Enable PCI root complex support, so PCIe endpoint devices can be attached to the Tile chip. Many, but not all, PCI devices @@ -334,18 +413,32 @@ config PCI_DOMAINS config NO_IOMEM def_bool !PCI -config NO_IOPORT +config NO_IOPORT_MAP def_bool !PCI +config TILE_PCI_IO + bool "PCI I/O space support" + default n + depends on PCI + depends on TILEGX + ---help--- + Enable PCI I/O space support on TILEGx. Since the PCI I/O space + is used by few modern PCIe endpoint devices, its support is disabled + by default to save the TRIO PIO Region resource for other purposes. + source "drivers/pci/Kconfig" -config HOTPLUG - bool "Support for hot-pluggable devices" +source "drivers/pci/pcie/Kconfig" + +config TILE_USB + tristate "Tilera USB host adapter support" + default y + depends on USB + depends on TILEGX + select TILE_GXIO_USB_HOST ---help--- - Say Y here if you want to plug devices into your computer while - the system is running, and be able to use them quickly. In many - cases, the devices can likewise be unplugged at any time too. - One well-known example of this is USB. + Provides USB host adapter support for the built-in EHCI and OHCI + interfaces on TILE-Gx chips. source "drivers/pci/hotplug/Kconfig" @@ -353,11 +446,6 @@ endmenu menu "Executable file formats" -# only elf supported -config KCORE_ELF - def_bool y - depends on PROC_FS - source "fs/Kconfig.binfmt" endmenu |