task_allocator: Use config switches instead of magic defines
Replace __HAVE_ARCH_TASK_ALLOCATOR and __HAVE_ARCH_THREAD_ALLOCATOR
with proper config switches.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20120505150142.371309416@linutronix.de
diff --git a/arch/Kconfig b/arch/Kconfig
index 597b132..bd265a2 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -152,6 +152,14 @@
config ARCH_INIT_TASK
bool
+# Select if arch has its private alloc_task_struct() function
+config ARCH_TASK_STRUCT_ALLOCATOR
+ bool
+
+# Select if arch has its private alloc_thread_info() function
+config ARCH_THREAD_INFO_ALLOCATOR
+ bool
+
config HAVE_REGS_AND_STACK_ACCESS_API
bool
help
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 022ea3a..ba667b6 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -35,6 +35,8 @@
select GENERIC_IOMAP
select GENERIC_SMP_IDLE_THREAD
select ARCH_INIT_TASK
+ select ARCH_TASK_STRUCT_ALLOCATOR
+ select ARCH_THREAD_INFO_ALLOCATOR
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h
index e054bcc..310d973 100644
--- a/arch/ia64/include/asm/thread_info.h
+++ b/arch/ia64/include/asm/thread_info.h
@@ -54,8 +54,6 @@
}, \
}
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
#ifndef ASM_OFFSETS_C
/* how to get the thread information struct from C */
#define current_thread_info() ((struct thread_info *) ((char *) current + IA64_TASK_SIZE))
@@ -84,7 +82,6 @@
#endif
#define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET)
-#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
#define alloc_task_struct_node(node) \
({ \
struct page *page = alloc_pages_node(node, GFP_KERNEL | __GFP_COMP, \
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index e417f35..ec0347a 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -36,6 +36,7 @@
def_bool !64BIT
select GENERIC_ATOMIC64
select CLZ_TAB
+ select ARCH_THREAD_INFO_ALLOCATOR
config SPARC64
def_bool 64BIT
diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
index c2a1080..b29498d 100644
--- a/arch/sparc/include/asm/thread_info_32.h
+++ b/arch/sparc/include/asm/thread_info_32.h
@@ -80,8 +80,6 @@
*/
#define THREAD_INFO_ORDER 1
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
BTFIXUPDEF_CALL(struct thread_info *, alloc_thread_info_node, int)
#define alloc_thread_info_node(tsk, node) BTFIXUP_CALL(alloc_thread_info_node)(node)
diff --git a/kernel/fork.c b/kernel/fork.c
index 7590bd6..a1793e4 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -111,7 +111,7 @@
return total;
}
-#ifndef __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
+#ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR
static struct kmem_cache *task_struct_cachep;
static inline struct task_struct *alloc_task_struct_node(int node)
@@ -128,8 +128,7 @@
}
#endif
-#ifndef __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
+#ifndef CONFIG_ARCH_THREAD_INFO_ALLOCATOR
void __weak arch_release_thread_info(struct thread_info *ti) { }
/*
@@ -243,7 +242,7 @@
void __init fork_init(unsigned long mempages)
{
-#ifndef __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
+#ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR
#ifndef ARCH_MIN_TASKALIGN
#define ARCH_MIN_TASKALIGN L1_CACHE_BYTES
#endif