Merge branch 'auto-ftrace-next' into tracing/for-linus

Conflicts:

	arch/x86/kernel/entry_32.S
	arch/x86/kernel/process_32.c
	arch/x86/kernel/process_64.c
	arch/x86/lib/Makefile
	include/asm-x86/irqflags.h
	kernel/Makefile
	kernel/sched.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 47 insertions, 0 deletions

diff --git a/arch/x86/lib/thunk_32.S b/arch/x86/lib/thunk_32.S
new file mode 100644
index 000000000000..650b11e00ecc
--- /dev/null
+++ b/arch/x86/lib/thunk_32.S
@@ -0,0 +1,47 @@
+/*
+ * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash)
+ * Copyright 2008 by Steven Rostedt, Red Hat, Inc
+ *  (inspired by Andi Kleen's thunk_64.S)
+ * Subject to the GNU public license, v.2. No warranty of any kind.
+ */
+
+        #include <linux/linkage.h>
+
+#define ARCH_TRACE_IRQS_ON                      \
+        pushl %eax;                             \
+        pushl %ecx;                             \
+        pushl %edx;                             \
+        call trace_hardirqs_on;                 \
+        popl %edx;                              \
+        popl %ecx;                              \
+        popl %eax;
+
+#define ARCH_TRACE_IRQS_OFF                     \
+        pushl %eax;                             \
+        pushl %ecx;                             \
+        pushl %edx;                             \
+        call trace_hardirqs_off;                \
+        popl %edx;                              \
+        popl %ecx;                              \
+        popl %eax;
+
+#ifdef CONFIG_TRACE_IRQFLAGS
+        /* put return address in eax (arg1) */
+        .macro thunk_ra name,func
+        .globl \name
+\name:
+        pushl %eax
+        pushl %ecx
+        pushl %edx
+        /* Place EIP in the arg1 */
+        movl 3*4(%esp), %eax
+        call \func
+        popl %edx
+        popl %ecx
+        popl %eax
+        ret
+        .endm
+
+        thunk_ra trace_hardirqs_on_thunk,trace_hardirqs_on_caller
+        thunk_ra trace_hardirqs_off_thunk,trace_hardirqs_off_caller
+#endif