Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/switch_to.h b/arch/blackfin/include/asm/switch_to.h
new file mode 100644
index 000000000000..aaf671be9242
--- /dev/null
+++ b/arch/blackfin/include/asm/switch_to.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2004-2009 Analog Devices Inc.
+ *               Tony Kou (tonyko@lineo.ca)
+ *
+ * Licensed under the GPL-2 or later
+ */
+
+#ifndef _BLACKFIN_SWITCH_TO_H
+#define _BLACKFIN_SWITCH_TO_H
+
+#define prepare_to_switch()     do { } while(0)
+
+/*
+ * switch_to(n) should switch tasks to task ptr, first checking that
+ * ptr isn't the current task, in which case it does nothing.
+ */
+
+#include <asm/l1layout.h>
+#include <asm/mem_map.h>
+
+asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next);
+
+#ifndef CONFIG_SMP
+#define switch_to(prev,next,last) \
+do {    \
+	memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \
+		sizeof *L1_SCRATCH_TASK_INFO); \
+	memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \
+		sizeof *L1_SCRATCH_TASK_INFO); \
+	(last) = resume (prev, next);   \
+} while (0)
+#else
+#define switch_to(prev, next, last) \
+do {    \
+	(last) = resume(prev, next);   \
+} while (0)
+#endif
+
+#endif /* _BLACKFIN_SWITCH_TO_H */