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authorAnanth N Mavinakayanahalli <ananth@in.ibm.com>2005-11-07 01:00:08 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:45 -0800
commit9a0e3a86837ac7542e601c18346102c9d9e65fa5 (patch)
tree0e58782bfe2be7c1dd82e254df9d4d0fea6781bd /include/asm-i386
parente65845235c8120be63001fc1a4ac00c819194bbe (diff)
[PATCH] Kprobes: Track kprobe on a per_cpu basis - i386 changes
I386 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>
Diffstat (limited to 'include/asm-i386')
-rw-r--r--include/asm-i386/kprobes.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/asm-i386/kprobes.h b/include/asm-i386/kprobes.h
index 8b6d3a90cd7..ca916a89287 100644
--- a/include/asm-i386/kprobes.h
+++ b/include/asm-i386/kprobes.h
@@ -49,6 +49,23 @@ struct arch_specific_insn {
kprobe_opcode_t insn[MAX_INSN_SIZE];
};
+struct prev_kprobe {
+ struct kprobe *kp;
+ unsigned long status;
+ unsigned long old_eflags;
+ unsigned long saved_eflags;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+ unsigned long kprobe_status;
+ unsigned long kprobe_old_eflags;
+ unsigned long kprobe_saved_eflags;
+ long *jprobe_saved_esp;
+ 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.