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| author |   Uwe Kleine-König <uwe@kleine-koenig.org> | 2016-11-22 16:47:11 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-11-24 11:55:43 -0500 |
| commit | e22e996b72d47c7bf5bb6b17071b2e9d3db462d4 (patch) | |
| tree | 6e3a0b92aba2431cbeb9ee108933e430177baaee /drivers/net/phy/mdio_bus.c | |
| parent | VSOCK: add loopback to virtio_transport (diff) | |
| download | linux-dev-e22e996b72d47c7bf5bb6b17071b2e9d3db462d4.tar.xz linux-dev-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/mdio_bus.c')
| -rw-r--r-- | drivers/net/phy/mdio_bus.c | 11 |
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); |