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ath: Add support for tracing

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Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2014-09-27 13:27:45 +05:30 committed by John W. Linville
parent f6cd071891
commit e6664dff06
6 changed files with 107 additions and 0 deletions
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8
drivers/net/wireless/ath/Kconfig
View File

@ -25,6 +25,14 @@ config ATH_DEBUG
Say Y, if you want to debug atheros wireless drivers.
Right now only ath9k makes use of this.
config ATH_TRACEPOINTS
bool "Atheros wireless tracing"
depends on ATH_DEBUG
depends on EVENT_TRACING
---help---
This option enables tracepoints for atheros wireless drivers.
Currently, ath9k makes use of this facility.
config ATH_REG_DYNAMIC_USER_REG_HINTS
bool "Atheros dynamic user regulatory hints"
depends on CFG80211_CERTIFICATION_ONUS

4
drivers/net/wireless/ath/Makefile
View File

@ -17,4 +17,8 @@ ath-objs := main.o \
dfs_pri_detector.o
ath-$(CONFIG_ATH_DEBUG) += debug.o
ath-$(CONFIG_ATH_TRACEPOINTS) += trace.o
ccflags-y += -D__CHECK_ENDIAN__
CFLAGS_trace.o := -I$(src)

1
drivers/net/wireless/ath/ath.h
View File

@ -268,6 +268,7 @@ enum ATH_DEBUG {
};
#define ATH_DBG_DEFAULT (ATH_DBG_FATAL)
#define ATH_DBG_MAX_LEN 512
#ifdef CONFIG_ATH_DEBUG

3
drivers/net/wireless/ath/main.c
View File

@ -20,6 +20,7 @@
#include <linux/module.h>
#include "ath.h"
#include "trace.h"
MODULE_AUTHOR("Atheros Communications");
MODULE_DESCRIPTION("Shared library for Atheros wireless LAN cards.");
@ -84,6 +85,8 @@ void ath_printk(const char *level, const struct ath_common* common,
else
printk("%sath: %pV", level, &vaf);
trace_ath_log(common->hw->wiphy, &vaf);
va_end(args);
}
EXPORT_SYMBOL(ath_printk);

20
drivers/net/wireless/ath/trace.c Normal file
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@ -0,0 +1,20 @@
/*
* 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.
*/
#include <linux/module.h>
#define CREATE_TRACE_POINTS
#include "trace.h"

71
drivers/net/wireless/ath/trace.h Normal file
View File

@ -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>