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Message-ID: <20220705224750.354926535@goodmis.org>
Date: Tue, 05 Jul 2022 18:45:01 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: linux-kernel@...r.kernel.org
Cc: Ingo Molnar <mingo@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Chunfeng Yun <chunfeng.yun@...iatek.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org
Subject: [PATCH 08/13] USB: mtu3: tracing: Use the new __vstring() helper
From: "Steven Rostedt (Google)" <rostedt@...dmis.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@...iatek.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-usb@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-mediatek@...ts.infradead.org
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.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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