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authorSteven Rostedt (Google) <rostedt@goodmis.org>2022-07-19 18:27:19 +0300
committerSteven Rostedt (Google) <rostedt@goodmis.org>2022-07-25 02:11:18 +0300
commit730dbb8ddac6b92573658c3cb03555df1bdf95aa (patch)
tree6029490e490dff37c7158216160b04341a6b7861 /drivers/usb/mtu3
parentf71f3ba9b42381c2e52c079a0104e11c30ca4cc2 (diff)
downloadlinux-730dbb8ddac6b92573658c3cb03555df1bdf95aa.tar.xz
USB: mtu3: tracing: Use the new __vstring() helper
Instead of open coding a __dynamic_array() with a fixed length (which defeats the purpose of the dynamic array in the first place). Use the new __vstring() helper that will use a va_list and only write enough of the string into the ring buffer that is needed. Link: https://lkml.kernel.org/r/20220719112719.17e796c6@gandalf.local.home Cc: Ingo Molnar <mingo@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-usb@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Tested-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'drivers/usb/mtu3')
-rw-r--r--drivers/usb/mtu3/mtu3_trace.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/usb/mtu3/mtu3_trace.h b/drivers/usb/mtu3/mtu3_trace.h
index 1b897636daf2..a98fa012b729 100644
--- a/drivers/usb/mtu3/mtu3_trace.h
+++ b/drivers/usb/mtu3/mtu3_trace.h
@@ -18,18 +18,16 @@
#include "mtu3.h"
-#define MTU3_MSG_MAX 256
-
TRACE_EVENT(mtu3_log,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf),
TP_STRUCT__entry(
__string(name, dev_name(dev))
- __dynamic_array(char, msg, MTU3_MSG_MAX)
+ __vstring(msg, vaf->fmt, vaf->va)
),
TP_fast_assign(
__assign_str(name, dev_name(dev));
- vsnprintf(__get_str(msg), MTU3_MSG_MAX, vaf->fmt, *vaf->va);
+ __assign_vstr(msg, vaf->fmt, vaf->va);
),
TP_printk("%s: %s", __get_str(name), __get_str(msg))
);