diff options
author | Simon Glass <sjg@chromium.org> | 2011-04-07 10:14:41 -0700 |
---|---|---|
committer | Simon Glass <sjg@chromium.org> | 2011-08-24 09:56:21 -0700 |
commit | 9530dc99ee3539909935e8a60a2bb756499c8318 (patch) | |
tree | 9e67946a7e123dfa8a65c97629a726dcbd80e591 /net | |
parent | 29897caccd59d51e110475edbaa483175f1f363f (diff) |
Add microsecond boot time measurement
This defines the basics of a new boot time measurement feature. This allows
logging of very accurate time measurements as the boot proceeds, by using
an available microsecond counter.
To enable the feature, define CONFIG_BOOTSTAGE in your board config file.
Also available is CONFIG_BOOTSTAGE_REPORT which will cause a report to be
printed just before handing off to the OS.
BUG=chromium-os:13875
TEST=build and boot, check that progress is reported before running Linux:
Timer summary in microseconds:
Mark Elapsed Stage
0 0 awake
2,181,078 2,181,078 usb_start
11,861,817 9,680,739 bootp_start
11,884,610 22,793 bootp_stop
11,884,689 79 tftp start
15,271,536 3,386,847 tftp done
15,271,568 32 bootm_start
15,406,551 134,983 start_kernel
Change-Id: I71b89c8402dc5dec75e68333bd24a6bab7500a1b
Reviewed-on: http://gerrit.chromium.org/gerrit/197
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'net')
-rw-r--r-- | net/bootp.c | 3 | ||||
-rw-r--r-- | net/net.c | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/net/bootp.c b/net/bootp.c index 4db63cbbe64..043f9e0ed42 100644 --- a/net/bootp.c +++ b/net/bootp.c @@ -311,6 +311,7 @@ BootpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, BootpVendorProcess((uchar *)&bp->bp_vend[4], len); NetSetTimeout(0, (thand_f *)0); + bootstage_mark(BOOTSTAGE_BOOTP_STOP, "bootp_stop"); debug("Got good BOOTP\n"); @@ -552,6 +553,7 @@ BootpRequest (void) Bootp_t *bp; int ext_len, pktlen, iplen; + bootstage_mark(BOOTSTAGE_BOOTP_START, "bootp_start"); #if defined(CONFIG_CMD_DHCP) dhcp_state = INIT; #endif @@ -914,6 +916,7 @@ DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, BootpCopyNetParams(bp); /* Store net params from reply */ dhcp_state = BOUND; printf ("DHCP client bound to address %pI4\n", &NetOurIP); + bootstage_mark(BOOTSTAGE_BOOTP_STOP, "bootp_stop"); /* Obey the 'autoload' setting */ if ((s = getenv("autoload")) != NULL) { diff --git a/net/net.c b/net/net.c index 7a6058339cc..272fb5bad73 100644 --- a/net/net.c +++ b/net/net.c @@ -378,6 +378,7 @@ NetLoop(proto_t protocol) NetArpWaitTxPacketSize = 0; } + bootstage_mark(BOOTSTAGE_ETH_START, "eth_start"); eth_halt(); #ifdef CONFIG_NET_MULTI eth_set_current(); |