tracing/probes: Do not use return value of trace_seq_printf()
The functions trace_seq_printf() and friends will soon not have a return
value and will only be a void function. Use trace_seq_has_overflowed()
instead to know if the trace_seq operations succeeded or not.
Link: http://lkml.kernel.org/r/20141114011411.530216306@goodmis.org
Reviewed-by: Petr Mladek <pmladek@suse.cz>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index d4b9fc2..b983b2f 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -40,7 +40,8 @@
int PRINT_TYPE_FUNC_NAME(type)(struct trace_seq *s, const char *name, \
void *data, void *ent) \
{ \
- return trace_seq_printf(s, " %s=" fmt, name, *(type *)data); \
+ trace_seq_printf(s, " %s=" fmt, name, *(type *)data); \
+ return !trace_seq_has_overflowed(s); \
} \
const char PRINT_TYPE_FMT_NAME(type)[] = fmt; \
NOKPROBE_SYMBOL(PRINT_TYPE_FUNC_NAME(type));
@@ -61,10 +62,11 @@
int len = *(u32 *)data >> 16;
if (!len)
- return trace_seq_printf(s, " %s=(fault)", name);
+ trace_seq_printf(s, " %s=(fault)", name);
else
- return trace_seq_printf(s, " %s=\"%s\"", name,
- (const char *)get_loc_data(data, ent));
+ trace_seq_printf(s, " %s=\"%s\"", name,
+ (const char *)get_loc_data(data, ent));
+ return !trace_seq_has_overflowed(s);
}
NOKPROBE_SYMBOL(PRINT_TYPE_FUNC_NAME(string));