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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2014-11-12 17:19:51 -0500
committerSteven Rostedt <rostedt@goodmis.org>2014-11-19 15:25:44 -0500
commitd2b0191a38cb1811fa69f645ff4b37e3a23a956d (patch)
tree076d0a3fd62ad5fa1726211a6f3bc0eee5111516 /kernel/trace/trace_probe.c
parenta72e10afab565385d51e5117d7cffe4a667c1b62 (diff)
downloadop-kernel-dev-d2b0191a38cb1811fa69f645ff4b37e3a23a956d.zip
op-kernel-dev-d2b0191a38cb1811fa69f645ff4b37e3a23a956d.tar.gz
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>
Diffstat (limited to 'kernel/trace/trace_probe.c')
-rw-r--r--kernel/trace/trace_probe.c10
1 files changed, 6 insertions, 4 deletions
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 @@ const char *reserved_field_names[] = {
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 PRINT_TYPE_FUNC_NAME(string)(struct trace_seq *s, const char *name,
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));
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