Restartable sequences: self-tests

[deliverable/linux.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index f755a602d4a176e006dc2cb5830d1c4812bac81f..545b7eda1b33abc601dbaa6b21995ac4dd4aef8c 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1458,6 +1458,7 @@ config KALLSYMS_ALL
 
 config KALLSYMS_ABSOLUTE_PERCPU
        bool
+       depends on KALLSYMS
        default X86_64 && SMP
 
 config KALLSYMS_BASE_RELATIVE
@@ -1652,6 +1653,19 @@ config MEMBARRIER
 
          If unsure, say Y.
 
+config RSEQ
+       bool "Enable rseq() system call" if EXPERT
+       default y
+       depends on HAVE_RSEQ
+       help
+         Enable the restartable sequences system call. It provides a
+         user-space cache for the current CPU number value, which
+         speeds up getting the current CPU number from user-space,
+         as well as an ABI to speed up user-space operations on
+         per-CPU data.
+
+         If unsure, say Y.
+
 config EMBEDDED
        bool "Embedded system"
        option allnoconfig_y