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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/tile/Kconfig
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/tile/Kconfig')
-rw-r--r--kernel/arch/tile/Kconfig37
1 files changed, 30 insertions, 7 deletions
diff --git a/kernel/arch/tile/Kconfig b/kernel/arch/tile/Kconfig
index a07e31b50..8ec7a4599 100644
--- a/kernel/arch/tile/Kconfig
+++ b/kernel/arch/tile/Kconfig
@@ -24,10 +24,15 @@ config TILE
select MODULES_USE_ELF_RELA
select HAVE_ARCH_TRACEHOOK
select HAVE_SYSCALL_TRACEPOINTS
+ select USER_STACKTRACE_SUPPORT
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_WANT_FRAME_POINTERS
select HAVE_CONTEXT_TRACKING
+ select EDAC_SUPPORT
+ select GENERIC_STRNCPY_FROM_USER
+ select GENERIC_STRNLEN_USER
+ select HAVE_ARCH_SECCOMP_FILTER
# FIXME: investigate whether we need/want these options.
# select HAVE_IOREMAP_PROT
@@ -124,8 +129,10 @@ config HVC_TILE
select HVC_IRQ if TILEGX
def_bool y
+# Building with ARCH=tilegx (or ARCH=tile) implies using the
+# 64-bit TILE-Gx toolchain, so force CONFIG_TILEGX on.
config TILEGX
- bool "Building for TILE-Gx (64-bit) processor"
+ def_bool ARCH != "tilepro"
select SPARSE_IRQ
select GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
select HAVE_FUNCTION_TRACER
@@ -169,8 +176,6 @@ config NR_CPUS
smaller kernel memory footprint results from using a smaller
value on chips with fewer tiles.
-if TILEGX
-
choice
prompt "Kernel page size"
default PAGE_SIZE_64KB
@@ -181,8 +186,11 @@ choice
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.
+ Note that for TILEPro, you must also rebuild the hypervisor
+ with a matching page size.
+
+config PAGE_SIZE_4KB
+ bool "4KB" if TILEPRO
config PAGE_SIZE_16KB
bool "16KB"
@@ -192,12 +200,11 @@ config PAGE_SIZE_64KB
endchoice
-endif
-
source "kernel/Kconfig.hz"
config KEXEC
bool "kexec system call"
+ select KEXEC_CORE
---help---
kexec is a system call that implements the ability to shutdown your
current kernel, and to start another kernel. It is like a reboot
@@ -215,6 +222,22 @@ config COMPAT
If enabled, the kernel will support running TILE-Gx binaries
that were built with the -m32 option.
+config SECCOMP
+ bool "Enable seccomp to safely compute untrusted bytecode"
+ depends on PROC_FS
+ help
+ This kernel feature is useful for number crunching applications
+ that may need to compute untrusted bytecode during their
+ execution. By using pipes or other transports made available to
+ the process as file descriptors supporting the read/write
+ syscalls, it's possible to isolate those applications in
+ their own address space using seccomp. Once seccomp is
+ enabled via prctl, it cannot be disabled and the task is only
+ allowed to execute a few safe syscalls defined by each seccomp
+ mode.
+
+ If unsure, say N.
+
config SYSVIPC_COMPAT
def_bool y
depends on COMPAT && SYSVIPC