Messages in this thread Patch in this message | | | Date | Tue, 05 Jul 2022 18:45:01 -0400 | From | Steven Rostedt <> | Subject | [PATCH 08/13] USB: mtu3: tracing: Use the new __vstring() helper |
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From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
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.
Cc: Chunfeng Yun <chunfeng.yun@mediatek.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> --- drivers/usb/mtu3/mtu3_trace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/mtu3/mtu3_trace.h b/drivers/usb/mtu3/mtu3_trace.h index 1b897636daf2..57981082a6b1 100644 --- a/drivers/usb/mtu3/mtu3_trace.h +++ b/drivers/usb/mtu3/mtu3_trace.h @@ -25,11 +25,11 @@ TRACE_EVENT(mtu3_log, 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)) ); -- 2.35.1
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