ath: Add support for tracing

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/trace.h b/drivers/net/wireless/ath/trace.h
new file mode 100644
index 000000000000..ba711644d27e
--- /dev/null
+++ b/drivers/net/wireless/ath/trace.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2014 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#if !defined(_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_H
+
+#include <linux/tracepoint.h>
+#include "ath.h"
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM ath
+
+#if !defined(CONFIG_ATH_TRACEPOINTS)
+
+#undef TRACE_EVENT
+#define TRACE_EVENT(name, proto, ...) static inline void trace_ ## name(proto) {}
+
+#endif /* CONFIG_ATH_TRACEPOINTS */
+
+TRACE_EVENT(ath_log,
+
+	    TP_PROTO(struct wiphy *wiphy,
+		     struct va_format *vaf),
+
+	    TP_ARGS(wiphy, vaf),
+
+	    TP_STRUCT__entry(
+		    __string(device, wiphy_name(wiphy))
+		    __string(driver, KBUILD_MODNAME)
+		    __dynamic_array(char, msg, ATH_DBG_MAX_LEN)
+	    ),
+
+	    TP_fast_assign(
+		    __assign_str(device, wiphy_name(wiphy));
+		    __assign_str(driver, KBUILD_MODNAME);
+		    WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
+					   ATH_DBG_MAX_LEN,
+					   vaf->fmt,
+					   *vaf->va) >= ATH_DBG_MAX_LEN);
+	    ),
+
+	    TP_printk(
+		    "%s %s %s",
+		    __get_str(driver),
+		    __get_str(device),
+		    __get_str(msg)
+	    )
+);
+
+#endif /* _TRACE_H || TRACE_HEADER_MULTI_READ */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>