tracing: ftrace events for user faults and undefined instructions
New ftrace events (user_fault and undef_instr) for data, prefetch
or undefined instruction aborts. The new ftrace events are under
events/exception.
Change-Id: Iea328b71a1f623861cac9b45d858c3bbe09e1b82
Signed-off-by: Pushkar Joshi <pushkarj@codeaurora.org>
diff --git a/include/trace/events/exception.h b/include/trace/events/exception.h
new file mode 100644
index 0000000..110e920
--- /dev/null
+++ b/include/trace/events/exception.h
@@ -0,0 +1,68 @@
+/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM exception
+
+#if !defined(_TRACE_EXCEPTION_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_EXCEPTION_H
+
+#include <linux/tracepoint.h>
+
+struct task_struct;
+
+TRACE_EVENT(user_fault,
+
+ TP_PROTO(struct task_struct *tsk, unsigned long addr, unsigned int fsr),
+
+ TP_ARGS(tsk, addr, fsr),
+
+ TP_STRUCT__entry(
+ __string(task_name, tsk->comm)
+ __field(unsigned long, addr)
+ __field(unsigned int, fsr)
+ ),
+
+ TP_fast_assign(
+ __assign_str(task_name, tsk->comm)
+ __entry->addr = addr;
+ __entry->fsr = fsr;
+ ),
+
+ TP_printk("task_name:%s addr:%lu, fsr:%u", __get_str(task_name),\
+ __entry->addr, __entry->fsr)
+);
+
+struct pt_regs;
+
+TRACE_EVENT(undef_instr,
+
+ TP_PROTO(struct pt_regs *regs, void *prog_cnt),
+
+ TP_ARGS(regs, prog_cnt),
+
+ TP_STRUCT__entry(
+ __field(void *, prog_cnt)
+ __field(struct pt_regs *, regs)
+ ),
+
+ TP_fast_assign(
+ __entry->regs = regs;
+ __entry->prog_cnt = prog_cnt;
+ ),
+
+ TP_printk("pc:%p", __entry->prog_cnt)
+);
+
+#endif
+
+#include <trace/define_trace.h>