[PATCH] Kprobes: Track kprobe on a per_cpu basis - ia64 changes

IA64 changes to track kprobe execution on a per-cpu basis.  We now track the
kprobe state machine independently on each cpu using an arch specific kprobe
control block.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 573a3574a24f..592abb000e29 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -26,6 +26,7 @@
  */
 #include <linux/types.h>
 #include <linux/ptrace.h>
+#include <linux/percpu.h>
 #include <asm/break.h>
 
 #define MAX_INSN_SIZE   16
@@ -62,6 +63,18 @@ typedef struct _bundle {
         } quad1;
 } __attribute__((__aligned__(16)))  bundle_t;
 
+struct prev_kprobe {
+        struct kprobe *kp;
+        unsigned long status;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+        unsigned long kprobe_status;
+        struct pt_regs jprobe_saved_regs;
+        struct prev_kprobe prev_kprobe;
+};
+
 #define JPROBE_ENTRY(pentry)    (kprobe_opcode_t *)pentry
 
 #define ARCH_SUPPORTS_KRETPROBES