x86: fpu xstate split fix

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 7 insertions, 3 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 44a18192c420..89fe414645e9 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -132,9 +132,13 @@ void __put_task_struct(struct task_struct *tsk)
                 free_task(tsk);
 }
 
-void __attribute__((weak)) arch_task_cache_init(void)
-{
-}
+/*
+ * macro override instead of weak attribute alias, to workaround
+ * gcc 4.1.0 and 4.1.1 bugs with weak attribute and empty functions.
+ */
+#ifndef arch_task_cache_init
+#define arch_task_cache_init()
+#endif
 
 void __init fork_init(unsigned long mempages)
 {