aca42c6d4c
This change allows ts2phc to be configured to ignore timing updates that have a large offset spike in order to mitigate the resulting timing skew. In some circumstances on realtime systems with high CPU load, the timestamp consumed by ts2phc can be delayed in reaching ts2phc and results in the offset calculation attempting to speed the clock up by a large margin. This change causes ts2phc to ignore updates that would greatly skew the clock when ts2phc is already in a synchronized state. The global configuration option "max_phc_update_skip_cnt" is provided to allow users to specify how many consecutive offset spike incidents will be ignored before adjusting the clock. The default value is 120. The behaviour can be disabled by setting max_phc_update_skip_cnt to 0. This code is ported from a proposed upstream patch found here: https://sourceforge.net/p/linuxptp/mailman/message/44114092/ Test-plan: Pass: Verify linuxptp package build Pass: Deploy ts2phc binary and verify system time sync Pass: Manually trigger offset spike and verify that ts2phc maintains stable time sync Closes-bug: https://bugs.launchpad.net/starlingx/+bug/2059955 Change-Id: I13cd5c3440682ec9256e11449fe62d5fe28f66fa Signed-off-by: Cole Walker <cole.walker@windriver.com>
38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
From fdccd5ec965dee65d021eba76a1e75d28197be02 Mon Sep 17 00:00:00 2001
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From: Andre Mauricio Zelak <andre.zelak@windriver.com>
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Date: Mon, 12 Jun 2023 17:51:10 -0300
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Subject: [PATCH 32/58] phc2sys: Fix regression in the automatic mode.
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Commit ac7d69bbc476 ("pmc_agent: Convert the method that queries the
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port properties.") had the well meant intention of the cleaning up the
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error code semantics of the port properties query function. However,
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that commit mixed up the normal, external semantics of zero meaning
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success with the internal semantics where zero is an error. Correct
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the issue by replacing the hard coded number with the proper macro.
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Signed-off-by: Richard Cochran <richardcochran@gmail.com>
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Fixes: ac7d69bbc476 ("pmc_agent: Convert the method that queries the port properties.")
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[commit 0fb1be2f5c4d6905f33a2b1c31e7496d52296748 upstream]
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Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
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---
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pmc_agent.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/pmc_agent.c b/pmc_agent.c
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index 6e6627d..623f300 100644
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--- a/pmc_agent.c
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+++ b/pmc_agent.c
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@@ -338,7 +338,7 @@ int pmc_agent_query_port_properties(struct pmc_agent *node, int timeout,
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iface[len] = '\0';
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msg_put(msg);
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- res = 0;
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+ res = RUN_PMC_OKAY;
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break;
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}
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out:
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--
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2.30.2
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