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Diffstat (limited to 'include/linux/trace_seq.h')
-rw-r--r--include/linux/trace_seq.h25
1 files changed, 24 insertions, 1 deletions
diff --git a/include/linux/trace_seq.h b/include/linux/trace_seq.h
index 557780fe1c77..697d619aafdc 100644
--- a/include/linux/trace_seq.h
+++ b/include/linux/trace_seq.h
@@ -80,6 +80,19 @@ static inline bool trace_seq_has_overflowed(struct trace_seq *s)
return s->full || seq_buf_has_overflowed(&s->seq);
}
+/**
+ * trace_seq_pop - pop off the last written character
+ * @s: trace sequence descriptor
+ *
+ * Removes the last written character to the trace_seq @s.
+ *
+ * Returns the last character or -1 if it is empty.
+ */
+static inline int trace_seq_pop(struct trace_seq *s)
+{
+ return seq_buf_pop(&s->seq);
+}
+
/*
* Currently only defined when tracing is enabled.
*/
@@ -101,7 +114,11 @@ extern void trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
extern int trace_seq_path(struct trace_seq *s, const struct path *path);
extern void trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp,
- int nmaskbits);
+ int nmaskbits);
+
+extern void trace_seq_bitmask_list(struct trace_seq *s,
+ const unsigned long *maskp,
+ int nmaskbits);
extern int trace_seq_hex_dump(struct trace_seq *s, const char *prefix_str,
int prefix_type, int rowsize, int groupsize,
@@ -124,6 +141,12 @@ trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp,
{
}
+static inline void
+trace_seq_bitmask_list(struct trace_seq *s, const unsigned long *maskp,
+ int nmaskbits)
+{
+}
+
static inline int trace_print_seq(struct seq_file *m, struct trace_seq *s)
{
return 0;