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-rw-r--r--kernel/trace/trace.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index be3b3cf95f4..648433d18cc 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -72,6 +72,23 @@ struct print_entry {
};
/*
+ * trace_flag_type is an enumeration that holds different
+ * states when a trace occurs. These are:
+ * IRQS_OFF - interrupts were disabled
+ * NEED_RESCED - reschedule is requested
+ * HARDIRQ - inside an interrupt handler
+ * SOFTIRQ - inside a softirq handler
+ * CONT - multiple entries hold the trace item
+ */
+enum trace_flag_type {
+ TRACE_FLAG_IRQS_OFF = 0x01,
+ TRACE_FLAG_NEED_RESCHED = 0x02,
+ TRACE_FLAG_HARDIRQ = 0x04,
+ TRACE_FLAG_SOFTIRQ = 0x08,
+ TRACE_FLAG_CONT = 0x10,
+};
+
+/*
* The trace field - the most basic unit of tracing. This is what
* is printed in the end as a single line in the trace output, such as:
*
@@ -330,6 +347,8 @@ extern int trace_selftest_startup_sysprof(struct tracer *trace,
extern void *head_page(struct trace_array_cpu *data);
extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
+extern void trace_seq_print_cont(struct trace_seq *s,
+ struct trace_iterator *iter);
extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
size_t cnt);
extern long ns2usecs(cycle_t nsec);