percpu: make PER_CPU_BASE_SECTION overridable by arches
Impact: bug fix
IA-64 needs to put percpu data in the seperate section even on UP.
Fixes regression caused by "percpu: refactor percpu.h"
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/ia64/include/asm/percpu.h b/arch/ia64/include/asm/percpu.h
index 77f30b6..30cf465 100644
--- a/arch/ia64/include/asm/percpu.h
+++ b/arch/ia64/include/asm/percpu.h
@@ -27,12 +27,12 @@
#else /* ! SMP */
-#define PER_CPU_ATTRIBUTES __attribute__((__section__(".data.percpu")))
-
#define per_cpu_init() (__phys_per_cpu_start)
#endif /* SMP */
+#define PER_CPU_BASE_SECTION ".data.percpu"
+
/*
* Be extremely careful when taking the address of this variable! Due to virtual
* remapping, it is different from the canonical address returned by __get_cpu_var(var)!
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 0e24202..3577ffd 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -8,8 +8,15 @@
#include <asm/percpu.h>
+#ifndef PER_CPU_BASE_SECTION
#ifdef CONFIG_SMP
#define PER_CPU_BASE_SECTION ".data.percpu"
+#else
+#define PER_CPU_BASE_SECTION ".data"
+#endif
+#endif
+
+#ifdef CONFIG_SMP
#ifdef MODULE
#define PER_CPU_SHARED_ALIGNED_SECTION ""
@@ -20,7 +27,6 @@
#else
-#define PER_CPU_BASE_SECTION ".data"
#define PER_CPU_SHARED_ALIGNED_SECTION ""
#define PER_CPU_FIRST_SECTION ""