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| author | Bryan O'Donoghue <bryan.odonoghue@linaro.org> | 2015-09-22 18:06:37 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2015-09-23 12:39:24 -0700 |
| commit | d090446a915f109e65f3b2643269b134e1ddb4ef (patch) | |
| tree | 973bf816eaea70cef1b422736423b49618705915 /drivers/staging/greybus/connection.c | |
| parent | 608f6619a295ce755061a046e967d8e32c2f4f5b (diff) | |
| download | linux-stable-d090446a915f109e65f3b2643269b134e1ddb4ef.tar.gz linux-stable-d090446a915f109e65f3b2643269b134e1ddb4ef.tar.bz2 linux-stable-d090446a915f109e65f3b2643269b134e1ddb4ef.zip | |
greybus: loopback: drop dependency on internal timestamps
This patch drops tracking of internal latencies, it's possible to derive
these times via kernel tracepoints and some user-space scripting. Since
there's no other use of the internal timestamp than the loopback driver we
remove the connection.c, connection.h, es1.c, es2.c and loopback.c
inter-dependency in one go.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/connection.c')
| -rw-r--r-- | drivers/staging/greybus/connection.c | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/drivers/staging/greybus/connection.c b/drivers/staging/greybus/connection.c index f1541312fcc5..05a9b548b64a 100644 --- a/drivers/staging/greybus/connection.c +++ b/drivers/staging/greybus/connection.c @@ -67,29 +67,6 @@ void greybus_data_rcvd(struct greybus_host_device *hd, u16 cport_id, } EXPORT_SYMBOL_GPL(greybus_data_rcvd); -void gb_connection_push_timestamp(struct gb_connection *connection) -{ - struct timeval tv; - - do_gettimeofday(&tv); - kfifo_in_locked(&connection->ts_kfifo, (void *)&tv, - sizeof(struct timeval), &connection->lock); -} -EXPORT_SYMBOL_GPL(gb_connection_push_timestamp); - -int gb_connection_pop_timestamp(struct gb_connection *connection, - struct timeval *tv) -{ - int retval; - - if (!kfifo_len(&connection->ts_kfifo)) - return -ENOMEM; - retval = kfifo_out_locked(&connection->ts_kfifo, (void *)tv, - sizeof(*tv), &connection->lock); - return retval; -} -EXPORT_SYMBOL_GPL(gb_connection_pop_timestamp); - static ssize_t state_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -138,7 +115,6 @@ static void gb_connection_release(struct device *dev) struct gb_connection *connection = to_gb_connection(dev); destroy_workqueue(connection->wq); - kfifo_free(&connection->ts_kfifo); kfree(connection); } @@ -234,10 +210,6 @@ gb_connection_create_range(struct greybus_host_device *hd, if (!connection->wq) goto err_free_connection; - if (kfifo_alloc(&connection->ts_kfifo, GB_CONNECTION_TS_KFIFO_LEN, - GFP_KERNEL)) - goto err_destroy_wq; - connection->dev.parent = parent; connection->dev.bus = &greybus_bus_type; connection->dev.type = &greybus_connection_type; @@ -274,8 +246,6 @@ gb_connection_create_range(struct greybus_host_device *hd, return connection; -err_destroy_wq: - destroy_workqueue(connection->wq); err_free_connection: kfree(connection); err_remove_ida: |