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| author | Michael Brown | 2014-04-27 22:51:03 +0200 |
|---|---|---|
| committer | Michael Brown | 2014-04-28 00:14:47 +0200 |
| commit | 2c820d684afced4a73bb29484693c1a9e71c1583 (patch) | |
| tree | 7b40f5d0eee0be3ec8664d8eb187660ad69f6d90 /src/net/netdevice.c | |
| parent | [cmdline] Add "profstat" command to display profiling statistics (diff) | |
| download | ipxe-2c820d684afced4a73bb29484693c1a9e71c1583.tar.gz ipxe-2c820d684afced4a73bb29484693c1a9e71c1583.tar.xz ipxe-2c820d684afced4a73bb29484693c1a9e71c1583.zip | |
[netdevice] Profile common operations
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/net/netdevice.c')
| -rw-r--r-- | src/net/netdevice.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/net/netdevice.c b/src/net/netdevice.c index 4a42ef42..a05d6610 100644 --- a/src/net/netdevice.c +++ b/src/net/netdevice.c @@ -34,6 +34,7 @@ FILE_LICENCE ( GPL2_OR_LATER ); #include <ipxe/malloc.h> #include <ipxe/device.h> #include <ipxe/errortab.h> +#include <ipxe/profile.h> #include <ipxe/vlan.h> #include <ipxe/netdevice.h> @@ -49,6 +50,15 @@ struct list_head net_devices = LIST_HEAD_INIT ( net_devices ); /** List of open network devices, in reverse order of opening */ static struct list_head open_net_devices = LIST_HEAD_INIT ( open_net_devices ); +/** Network polling profiler */ +static struct profiler net_poll_profiler __profiler = { .name = "net.poll" }; + +/** Network receive profiler */ +static struct profiler net_rx_profiler __profiler = { .name = "net.rx" }; + +/** Network transmit profiler */ +static struct profiler net_tx_profiler __profiler = { .name = "net.tx" }; + /** Default unknown link status code */ #define EUNKNOWN_LINK_STATUS __einfo_error ( EINFO_EUNKNOWN_LINK_STATUS ) #define EINFO_EUNKNOWN_LINK_STATUS \ @@ -227,6 +237,7 @@ int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ) { DBGC2 ( netdev, "NETDEV %s transmitting %p (%p+%zx)\n", netdev->name, iobuf, iobuf->data, iob_len ( iobuf ) ); + profile_start ( &net_tx_profiler ); /* Enqueue packet */ list_add_tail ( &iobuf->list, &netdev->tx_queue ); @@ -248,6 +259,7 @@ int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ) { if ( ( rc = netdev->op->transmit ( netdev, iobuf ) ) != 0 ) goto err; + profile_stop ( &net_tx_profiler ); return 0; err: @@ -932,7 +944,9 @@ void net_poll ( void ) { list_for_each_entry ( netdev, &net_devices, list ) { /* Poll for new packets */ + profile_start ( &net_poll_profiler ); netdev_poll ( netdev ); + profile_stop ( &net_poll_profiler ); /* Leave received packets on the queue if receive * queue processing is currently frozen. This will @@ -949,6 +963,7 @@ void net_poll ( void ) { DBGC2 ( netdev, "NETDEV %s processing %p (%p+%zx)\n", netdev->name, iobuf, iobuf->data, iob_len ( iobuf ) ); + profile_start ( &net_rx_profiler ); /* Remove link-layer header */ ll_protocol = netdev->ll_protocol; @@ -967,6 +982,7 @@ void net_poll ( void ) { /* Record error for diagnosis */ netdev_rx_err ( netdev, NULL, rc ); } + profile_stop ( &net_rx_profiler ); } } } |