kprobes: improve kretprobe scalability with hashed locking

[karo-tx-linux.git] / arch / powerpc / kernel / process.c

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 0a4eb0811590de033a3544c8b574dce9ea52ab04..219f3634115e46a05d0c1426d115aa95d58fef48 100644 (file)
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -159,6 +159,13 @@ void enable_kernel_vsx(void)
 EXPORT_SYMBOL(enable_kernel_vsx);
 #endif
 
+void giveup_vsx(struct task_struct *tsk)
+{
+       giveup_fpu(tsk);
+       giveup_altivec(tsk);
+       __giveup_vsx(tsk);
+}
+
 void flush_vsx_to_thread(struct task_struct *tsk)
 {
        if (tsk->thread.regs) {
@@ -290,7 +297,8 @@ struct task_struct *__switch_to(struct task_struct *prev,
 #endif /* CONFIG_ALTIVEC */
 #ifdef CONFIG_VSX
        if (prev->thread.regs && (prev->thread.regs->msr & MSR_VSX))
-               giveup_vsx(prev);
+               /* VMX and FPU registers are already save here */
+               __giveup_vsx(prev);
 #endif /* CONFIG_VSX */
 #ifdef CONFIG_SPE
        /*