[RFC patch 20/27] Immediate Values - Move Kprobes x86 restore_interrupt to kdebug.h

[Mathieu Desnoyers]

Since the breakpoint handler is useful both to kprobes and immediate values, it
makes sense to make the required restore_interrupt() available through
asm-i386/kdebug.h.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Acked-by: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
CC: Christoph Hellwig <hch@xxxxxxxxxxxxx>
CC: anil.s.keshavamurthy@xxxxxxxxx
CC: davem@xxxxxxxxxxxxx
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Ingo Molnar <mingo@xxxxxxxxxx>
CC: H. Peter Anvin <hpa@xxxxxxxxx>
---
 include/asm-x86/kdebug.h  |   12 ++++++++++++
 include/asm-x86/kprobes.h |    9 ---------
 2 files changed, 12 insertions(+), 9 deletions(-)

Index: linux-2.6-lttng/include/asm-x86/kdebug.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-x86/kdebug.h	2008-03-25 08:56:54.000000000 -0400
+++ linux-2.6-lttng/include/asm-x86/kdebug.h	2008-03-25 09:00:17.000000000 -0400
@@ -3,6 +3,9 @@
 
 #include <linux/notifier.h>
 
+#include <linux/ptrace.h>
+#include <asm/system.h>
+
 struct pt_regs;
 
 /* Grossly misnamed. */
@@ -34,4 +37,13 @@ extern void show_regs(struct pt_regs *re
 extern unsigned long oops_begin(void);
 extern void oops_end(unsigned long, struct pt_regs *, int signr);
 
+/* trap3/1 are intr gates for kprobes.  So, restore the status of IF,
+ * if necessary, before executing the original int3/1 (trap) handler.
+ */
+static inline void restore_interrupts(struct pt_regs *regs)
+{
+	if (regs->flags & X86_EFLAGS_IF)
+		local_irq_enable();
+}
+
 #endif
Index: linux-2.6-lttng/include/asm-x86/kprobes.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-x86/kprobes.h	2008-03-25 08:56:54.000000000 -0400
+++ linux-2.6-lttng/include/asm-x86/kprobes.h	2008-03-25 09:00:17.000000000 -0400
@@ -82,15 +82,6 @@ struct kprobe_ctlblk {
 	struct prev_kprobe prev_kprobe;
 };
 
-/* trap3/1 are intr gates for kprobes.  So, restore the status of IF,
- * if necessary, before executing the original int3/1 (trap) handler.
- */
-static inline void restore_interrupts(struct pt_regs *regs)
-{
-	if (regs->flags & X86_EFLAGS_IF)
-		local_irq_enable();
-}
-
 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
 extern int kprobe_exceptions_notify(struct notifier_block *self,
 				    unsigned long val, void *data);

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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