linux-kernel - [PATCH 5/8] regmap: Add the regcache

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Date:	Fri,  2 Sep 2011 16:46:12 +0100
From:	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>,
	Graeme Gregory <gg@...mlogic.co.uk>,
	Samuel Oritz <sameo@...ux.intel.com>,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: [PATCH 5/8] regmap: Add the regcache_sync trace event

Signed-off-by: Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>
---
 drivers/base/regmap/regcache.c |    8 +++++++-
 include/trace/events/regmap.h  |   24 ++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletions(-)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 6aece9e..6346d77 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -174,12 +174,18 @@ EXPORT_SYMBOL_GPL(regcache_write);
  */
 int regcache_sync(struct regmap *map)
 {
+	int ret;
+	const char *name;
+
 	BUG_ON(!map->cache_ops);
 
 	if (map->cache_ops->sync) {
 		dev_dbg(map->dev, "Syncing %s cache\n",
 			map->cache_ops->name);
-		return map->cache_ops->sync(map);
+		name = map->cache_ops->name;
+		trace_regcache_sync(map->dev, name, "start");
+		ret = map->cache_ops->sync(map);
+		trace_regcache_sync(map->dev, name, "stop");
 	}
 	return 0;
 }
diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h
index e35e37c..1e3193b 100644
--- a/include/trace/events/regmap.h
+++ b/include/trace/events/regmap.h
@@ -106,6 +106,30 @@ DEFINE_EVENT(regmap_block, regmap_hw_write_done,
 	TP_ARGS(dev, reg, count)
 );
 
+TRACE_EVENT(regcache_sync,
+
+	TP_PROTO(struct device *dev, const char *type,
+		 const char *status),
+
+	TP_ARGS(dev, type, status),
+
+	TP_STRUCT__entry(
+		__string(       name,           dev_name(dev)   )
+		__string(	status,		status		)
+		__string(	type,		type		)
+		__field(	int,		type		)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, dev_name(dev));
+		__assign_str(status, status);
+		__assign_str(type, type);
+	),
+
+	TP_printk("%s type=%s status=%s", __get_str(name),
+		  __get_str(type), __get_str(status))
+);
+
 #endif /* _TRACE_REGMAP_H */
 
 /* This part must be outside protection */
-- 
1.7.6.1

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