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-rw-r--r--init/Kconfig19
-rw-r--r--init/init_task.c7
2 files changed, 18 insertions, 8 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 69886493ff1e..34407f15e6d3 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -26,6 +26,16 @@ config IRQ_WORK
config BUILDTIME_EXTABLE_SORT
bool
+config THREAD_INFO_IN_TASK
+ bool
+ help
+ Select this to move thread_info off the stack into task_struct. To
+ make this work, an arch will need to remove all thread_info fields
+ except flags and fix any runtime bugs.
+
+ One subtle change that will be needed is to use try_get_task_stack()
+ and put_task_stack() in save_thread_stack_tsk() and get_wchan().
+
menu "General setup"
config BROKEN
@@ -1278,6 +1288,7 @@ config SYSFS_DEPRECATED_V2
config RELAY
bool "Kernel->user space relay support (formerly relayfs)"
+ select IRQ_WORK
help
This option enables support for relay interface support in
certain file systems (such as debugfs).
@@ -1761,6 +1772,7 @@ choice
config SLAB
bool "SLAB"
+ select HAVE_HARDENED_USERCOPY_ALLOCATOR
help
The regular slab allocator that is established and known to work
well in all environments. It organizes cache hot objects in
@@ -1768,6 +1780,7 @@ config SLAB
config SLUB
bool "SLUB (Unqueued Allocator)"
+ select HAVE_HARDENED_USERCOPY_ALLOCATOR
help
SLUB is a slab allocator that minimizes cache line usage
instead of managing queues of cached objects (SLAB approach).
@@ -2106,12 +2119,6 @@ config PADATA
depends on SMP
bool
-# Can be selected by architectures with broken toolchains
-# that get confused by correct const<->read_only section
-# mappings
-config BROKEN_RODATA
- bool
-
config ASN1
tristate
help
diff --git a/init/init_task.c b/init/init_task.c
index ba0a7f362d9e..11f83be1fa79 100644
--- a/init/init_task.c
+++ b/init/init_task.c
@@ -22,5 +22,8 @@ EXPORT_SYMBOL(init_task);
* Initial thread structure. Alignment of this is handled by a special
* linker map entry.
*/
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union __init_task_data = {
+#ifndef CONFIG_THREAD_INFO_IN_TASK
+ INIT_THREAD_INFO(init_task)
+#endif
+};