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-rw-r--r--arch/Kconfig30
1 files changed, 23 insertions, 7 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index c31416b10586..8e9e3246b2b4 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -80,6 +80,7 @@ config UPROBES
bool "Transparent user-space probes (EXPERIMENTAL)"
depends on UPROBE_EVENT && PERF_EVENTS
default n
+ select PERCPU_RWSEM
help
Uprobes is the user-space counterpart to kprobes: they
enable instrumentation applications (such as 'perf probe')
@@ -319,15 +320,16 @@ config SECCOMP_FILTER
See Documentation/prctl/seccomp_filter.txt for details.
-config HAVE_RCU_USER_QS
+config HAVE_CONTEXT_TRACKING
bool
help
- Provide kernel entry/exit hooks necessary for userspace
- RCU extended quiescent state. Syscalls need to be wrapped inside
- rcu_user_exit()-rcu_user_enter() through the slow path using
- TIF_NOHZ flag. Exceptions handlers must be wrapped as well. Irqs
- are already protected inside rcu_irq_enter/rcu_irq_exit() but
- preemption or signal handling on irq exit still need to be protected.
+ Provide kernel/user boundaries probes necessary for subsystems
+ that need it, such as userspace RCU extended quiescent state.
+ Syscalls need to be wrapped inside user_exit()-user_enter() through
+ the slow path using TIF_NOHZ flag. Exceptions handlers must be
+ wrapped as well. Irqs are already protected inside
+ rcu_irq_enter/rcu_irq_exit() but preemption or signal handling on
+ irq exit still need to be protected.
config HAVE_VIRT_CPU_ACCOUNTING
bool
@@ -360,4 +362,18 @@ config MODULES_USE_ELF_REL
Modules only use ELF REL relocations. Modules with ELF RELA
relocations will give an error.
+#
+# ABI hall of shame
+#
+config CLONE_BACKWARDS
+ bool
+ help
+ Architecture has tls passed as the 4th argument of clone(2),
+ not the 5th one.
+
+config CLONE_BACKWARDS2
+ bool
+ help
+ Architecture has the first two arguments of clone(2) swapped.
+
source "kernel/gcov/Kconfig"