diff options
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 29a057908173..1f48bbfb3ce9 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -131,6 +131,7 @@ config PPC select ARCH_HAS_PTE_DEVMAP if PPC_BOOK3S_64 select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_MEMBARRIER_CALLBACKS + select ARCH_HAS_MEMBARRIER_SYNC_CORE select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64 select ARCH_HAS_STRICT_KERNEL_RWX if (PPC32 && !HIBERNATION) select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST @@ -145,6 +146,8 @@ config PPC select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF if PPC64 + select ARCH_USE_QUEUED_RWLOCKS if PPC_QUEUED_SPINLOCKS + select ARCH_USE_QUEUED_SPINLOCKS if PPC_QUEUED_SPINLOCKS select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WEAK_RELEASE_ACQUIRE select BINFMT_ELF @@ -491,6 +494,19 @@ config HOTPLUG_CPU Say N if you are unsure. +config PPC_QUEUED_SPINLOCKS + bool "Queued spinlocks" + depends on SMP + help + Say Y here to use queued spinlocks which give better scalability and + fairness on large SMP and NUMA systems without harming single threaded + performance. + + This option is currently experimental, the code is more complex and + less tested so it defaults to "N" for the moment. + + If unsure, say "N". + config ARCH_CPU_PROBE_RELEASE def_bool y depends on HOTPLUG_CPU @@ -834,13 +850,16 @@ config FORCE_MAX_ZONEORDER this in mind when choosing a value for this option. config PPC_SUBPAGE_PROT - bool "Support setting protections for 4k subpages" + bool "Support setting protections for 4k subpages (subpage_prot syscall)" + default n depends on PPC_BOOK3S_64 && PPC_64K_PAGES help - This option adds support for a system call to allow user programs + This option adds support for system call to allow user programs to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page. + If unsure, say N here. + config PPC_COPRO_BASE bool @@ -860,12 +879,8 @@ config PPC_DENORMALISATION Add support for handling denormalisation of single precision values. Useful for bare metal only. If unsure say Y here. -config CMDLINE_BOOL - bool "Default bootloader kernel arguments" - config CMDLINE - string "Initial kernel command string" if CMDLINE_BOOL - default "console=ttyS0,9600 console=tty0 root=/dev/sda2" if CMDLINE_BOOL + string "Initial kernel command string" default "" help On some platforms, there is currently no way for the boot loader to @@ -1199,6 +1214,7 @@ config TASK_SIZE_BOOL config TASK_SIZE hex "Size of user task space" if TASK_SIZE_BOOL default "0x80000000" if PPC_8xx + default "0xb0000000" if PPC_BOOK3S_32 && STRICT_KERNEL_RWX default "0xc0000000" endmenu |