X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=arch%2Farm64%2Fkernel%2Fperf_event.c;h=1e49e5eb81e977fe44fccc369be1974617680cac;hb=c47f39e3b75e1138823984ad5079547c7a41b726;hp=f7073c7b1ca91de056f5ca80f13aad12e3383e91;hpb=60a406d1de227037193db6790a1a8650ea51dc93;p=~andy%2Flinux

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index f7073c7b1ca..1e49e5eb81e 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -1331,6 +1331,11 @@ void perf_callchain_user(struct perf_callchain_entry *entry,
 {
 	struct frame_tail __user *tail;
 
+	if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) {
+		/* We don't support guest os callchain now */
+		return;
+	}
+
 	tail = (struct frame_tail __user *)regs->regs[29];
 
 	while (entry->nr < PERF_MAX_STACK_DEPTH &&
@@ -1355,8 +1360,40 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry,
 {
 	struct stackframe frame;
 
+	if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) {
+		/* We don't support guest os callchain now */
+		return;
+	}
+
 	frame.fp = regs->regs[29];
 	frame.sp = regs->sp;
 	frame.pc = regs->pc;
 	walk_stackframe(&frame, callchain_trace, entry);
 }
+
+unsigned long perf_instruction_pointer(struct pt_regs *regs)
+{
+	if (perf_guest_cbs && perf_guest_cbs->is_in_guest())
+		return perf_guest_cbs->get_guest_ip();
+
+	return instruction_pointer(regs);
+}
+
+unsigned long perf_misc_flags(struct pt_regs *regs)
+{
+	int misc = 0;
+
+	if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) {
+		if (perf_guest_cbs->is_user_mode())
+			misc |= PERF_RECORD_MISC_GUEST_USER;
+		else
+			misc |= PERF_RECORD_MISC_GUEST_KERNEL;
+	} else {
+		if (user_mode(regs))
+			misc |= PERF_RECORD_MISC_USER;
+		else
+			misc |= PERF_RECORD_MISC_KERNEL;
+	}
+
+	return misc;
+}