summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorAnanth N Mavinakayanahalli <ananth@in.ibm.com>2005-11-07 01:00:12 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:46 -0800
commite7a510f92c1e482a7db05afd3cb84af1f4cfe0bc (patch)
treefc9eb17fc6788dc9319e134d17bd240dcf6f04a1 /include
parentf215d985e936cf493959b365a10593b6d5f80447 (diff)
downloadop-kernel-dev-e7a510f92c1e482a7db05afd3cb84af1f4cfe0bc.zip
op-kernel-dev-e7a510f92c1e482a7db05afd3cb84af1f4cfe0bc.tar.gz
[PATCH] Kprobes: Track kprobe on a per_cpu basis - x86_64 changes
x86_64 changes to track kprobe execution on a per-cpu basis. We now track the kprobe state machine independently on each cpu using a 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>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86_64/kprobes.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/asm-x86_64/kprobes.h b/include/asm-x86_64/kprobes.h
index 6d6d883..4dd7a7e 100644
--- a/include/asm-x86_64/kprobes.h
+++ b/include/asm-x86_64/kprobes.h
@@ -25,6 +25,7 @@
*/
#include <linux/types.h>
#include <linux/ptrace.h>
+#include <linux/percpu.h>
struct pt_regs;
@@ -48,6 +49,24 @@ struct arch_specific_insn {
kprobe_opcode_t *insn;
};
+struct prev_kprobe {
+ struct kprobe *kp;
+ unsigned long status;
+ unsigned long old_rflags;
+ unsigned long saved_rflags;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+ unsigned long kprobe_status;
+ unsigned long kprobe_old_rflags;
+ unsigned long kprobe_saved_rflags;
+ long *jprobe_saved_rsp;
+ struct pt_regs jprobe_saved_regs;
+ kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
+ 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.
*/
OpenPOWER on IntegriCloud