diff options
| author | Nicolas Iooss <nicolas.iooss_linux@m4x.org> | 2017-05-24 07:49:50 +0200 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2017-06-13 16:36:02 +0200 |
| commit | f4e981cba2dec675d40ac4f270b7e8ac164c9004 (patch) | |
| tree | a0132cc2af987efc099efefaa304178941ff154e /kernel/printk | |
| parent | printk: Use the main logbuf in NMI when logbuf_lock is available (diff) | |
| download | linux-f4e981cba2dec675d40ac4f270b7e8ac164c9004.tar.xz linux-f4e981cba2dec675d40ac4f270b7e8ac164c9004.zip | |
printk: add __printf attributes to internal functions
When compiling with -Wsuggest-attribute=format, gcc complains that some
functions in kernel/printk/printk_safe.c transmit their argument to
printf-like functions without having a printf attribute. Silence these
warnings by adding relevant __printf attributes.
Link: http://lkml.kernel.org/r/20170524054950.6722-1-nicolas.iooss_linux@m4x.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'kernel/printk')
| -rw-r--r-- | kernel/printk/printk_safe.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/printk/printk_safe.c b/kernel/printk/printk_safe.c index 03a42a539b20..3cdaeaef9ce1 100644 --- a/kernel/printk/printk_safe.c +++ b/kernel/printk/printk_safe.c @@ -80,8 +80,8 @@ static void queue_flush_work(struct printk_safe_seq_buf *s) * happen, printk_safe_log_store() will notice the buffer->len mismatch * and repeat the write. */ -static int printk_safe_log_store(struct printk_safe_seq_buf *s, - const char *fmt, va_list args) +static __printf(2, 0) int printk_safe_log_store(struct printk_safe_seq_buf *s, + const char *fmt, va_list args) { int add; size_t len; @@ -299,7 +299,7 @@ void printk_safe_flush_on_panic(void) * one writer running. But the buffer might get flushed from another * CPU, so we need to be careful. */ -static int vprintk_nmi(const char *fmt, va_list args) +static __printf(1, 0) int vprintk_nmi(const char *fmt, va_list args) { struct printk_safe_seq_buf *s = this_cpu_ptr(&nmi_print_seq); @@ -330,7 +330,7 @@ void printk_nmi_exit(void) #else -static int vprintk_nmi(const char *fmt, va_list args) +static __printf(1, 0) int vprintk_nmi(const char *fmt, va_list args) { return 0; } @@ -342,7 +342,7 @@ static int vprintk_nmi(const char *fmt, va_list args) * into itself. It uses a per-CPU buffer to store the message, just like * NMI. */ -static int vprintk_safe(const char *fmt, va_list args) +static __printf(1, 0) int vprintk_safe(const char *fmt, va_list args) { struct printk_safe_seq_buf *s = this_cpu_ptr(&safe_print_seq); |