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authorUwe Kleine-König <uwe@kleine-koenig.org>2016-11-22 16:47:11 +0100
committerDavid S. Miller <davem@davemloft.net>2016-11-24 11:55:43 -0500
commite22e996b72d47c7bf5bb6b17071b2e9d3db462d4 (patch)
tree6e3a0b92aba2431cbeb9ee108933e430177baaee /drivers/net/phy
parentb9116823189e85ccf3843c7d3ee3a361af0c3eb6 (diff)
downloadblackbird-op-linux-e22e996b72d47c7bf5bb6b17071b2e9d3db462d4.tar.gz
blackbird-op-linux-e22e996b72d47c7bf5bb6b17071b2e9d3db462d4.zip
net/phy: add trace events for mdio accesses
Make it possible to generate trace events for mdio read and write accesses. Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/mdio_bus.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 09deef4bed09..653d076eafe5 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -38,6 +38,9 @@
#include <asm/irq.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/mdio.h>
+
int mdiobus_register_device(struct mdio_device *mdiodev)
{
if (mdiodev->bus->mdio_map[mdiodev->addr])
@@ -461,6 +464,8 @@ int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum)
retval = bus->read(bus, addr, regnum);
mutex_unlock(&bus->mdio_lock);
+ trace_mdio_access(bus, 1, addr, regnum, retval, retval);
+
return retval;
}
EXPORT_SYMBOL(mdiobus_read_nested);
@@ -485,6 +490,8 @@ int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum)
retval = bus->read(bus, addr, regnum);
mutex_unlock(&bus->mdio_lock);
+ trace_mdio_access(bus, 1, addr, regnum, retval, retval);
+
return retval;
}
EXPORT_SYMBOL(mdiobus_read);
@@ -513,6 +520,8 @@ int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val)
err = bus->write(bus, addr, regnum, val);
mutex_unlock(&bus->mdio_lock);
+ trace_mdio_access(bus, 0, addr, regnum, val, err);
+
return err;
}
EXPORT_SYMBOL(mdiobus_write_nested);
@@ -538,6 +547,8 @@ int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val)
err = bus->write(bus, addr, regnum, val);
mutex_unlock(&bus->mdio_lock);
+ trace_mdio_access(bus, 0, addr, regnum, val, err);
+
return err;
}
EXPORT_SYMBOL(mdiobus_write);
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