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From:   Alain Michaud <alainm@chromium.org>
To:     BlueZ <linux-bluetooth@vger.kernel.org>
Cc:     Marcel Holtmann <marcel@holtmann.org>,
        Alain Michaud <alainm@chromium.org>
Subject: [PATCH v3 1/2] Adding a bt_dev_warn_ratelimited macro.
Date:   Wed, 11 Dec 2019 01:54:43 +0000
Message-Id: <20191211015444.143341-1-alainm@chromium.org>
MIME-Version: 1.0
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Sender: linux-bluetooth-owner@vger.kernel.org
Precedence: bulk

The macro will be used to display rate limited warning messages in the
log.

Signed-off-by: Alain Michaud <alainm@chromium.org>
---

 include/net/bluetooth/bluetooth.h |  4 ++++
 net/bluetooth/lib.c               | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index fabee6db0abb..bd2675266859 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -129,6 +129,8 @@ void bt_warn(const char *fmt, ...);
 __printf(1, 2)
 void bt_err(const char *fmt, ...);
 __printf(1, 2)
+void bt_warn_ratelimited(const char *fmt, ...);
+__printf(1, 2)
 void bt_err_ratelimited(const char *fmt, ...);
 
 #define BT_INFO(fmt, ...)	bt_info(fmt "\n", ##__VA_ARGS__)
@@ -147,6 +149,8 @@ void bt_err_ratelimited(const char *fmt, ...);
 #define bt_dev_dbg(hdev, fmt, ...)				\
 	BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
 
+#define bt_dev_warn_ratelimited(hdev, fmt, ...)			\
+	bt_warn_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
 #define bt_dev_err_ratelimited(hdev, fmt, ...)			\
 	BT_ERR_RATELIMITED("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
 
diff --git a/net/bluetooth/lib.c b/net/bluetooth/lib.c
index 63e65d9b4b24..755bc7c12e2d 100644
--- a/net/bluetooth/lib.c
+++ b/net/bluetooth/lib.c
@@ -167,6 +167,22 @@ void bt_warn(const char *format, ...)
 }
 EXPORT_SYMBOL(bt_warn);
 
+void bt_warn_ratelimited(const char *format, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	va_start(args, format);
+
+	vaf.fmt = format;
+	vaf.va = &args;
+
+	pr_warn_ratelimited("%pV", &vaf);
+
+	va_end(args);
+}
+EXPORT_SYMBOL(bt_warn_ratelimited);
+
 void bt_err(const char *format, ...)
 {
 	struct va_format vaf;
-- 
2.24.0.525.g8f36a354ae-goog