[for-next][PATCH 01/15] tracing: Add printf attribute to log function

Steven Rostedt
2021-02-03T16:07:53Z

From: Tom Rix <trix@redhat.com>

Attributing the function allows the compiler to more thoroughly
check the use of the function with -Wformat and similar flags.

Link: https://lkml.kernel.org/r/20201221162715.3757291-1-trix@redhat.com

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
include/linux/trace.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/trace.h b/include/linux/trace.h
index 886a4ffd9d45..be1e130ed87c 100644
--- a/include/linux/trace.h
+++ b/include/linux/trace.h
@@ -34,8 +34,9 @@ int unregister_ftrace_export(struct trace_export *export);
struct trace_array;

void trace_printk_init_buffers(void);
+__printf(3, 4)
int trace_array_printk(struct trace_array *tr, unsigned long ip,
- const char *fmt, ...);
+ const char *fmt, ...);
int trace_array_init_printk(struct trace_array *tr);
void trace_array_put(struct trace_array *tr);
struct trace_array *trace_array_get_by_name(const char *name);
--
2.29.2