deeacbcdf3
Enhanced phc2sys to support multiple PTP timing clock sources, to select the best clock source available according to the clocks statuses. A series of changes were patched back from a newer version of the linuxptp package. They contain the support for multiple pmc nodes, necessary to communicate with multiple ptp4l instances. The phc2sys is now able to automatically select the best clock according to the clocks statuses, and also monitors any clock status change and act to keep the system synchronized to the best clock source available. A new set of configuration options were added to control the behavior of the automatic clock selection algorithm and to configure the clock source interfaces. And a new command interface was added to phc2sys to gather statuses about the clocks configured and the HA algorithm. This interface also provides commands to control the clock source selection for debug and maintenance proposes. Test plan: PASS: Verify the linuxptp package is built containing all the patches. PASS: Verify the .deb package produced in the build install and that all the PTP different deployments new and existing are OK. PASS: Verify that a new image containing the linuxptp packed can be installed and that all the PTP different deployments new and existing are OK. Story: 2010723 Task: 48642 Change-Id: Ic8c4d9bd335c582a91f1f4418947a81fc5e8b4f9 Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
84 lines
2.6 KiB
Diff
84 lines
2.6 KiB
Diff
From e4fd6a930213e6f0f009eb070d51b1e14db60d1b Mon Sep 17 00:00:00 2001
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From: Miroslav Lichvar <mlichvar@redhat.com>
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Date: Wed, 18 May 2022 11:33:38 +0200
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Subject: [PATCH 10/47] phc2sys: Don't exit when reading of PHC fails with EBUSY.
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Reading of the PHC can occasionally fail with some drivers, e.g. the ice
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driver returns EBUSY when it fails to get a lock. Continue in the loop
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instead of exiting on the error.
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Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
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[ commit e8dc364f9fd5fbdac5d2c5e433f28e9da0028d49 upstream
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We drop two hunks of it, namely the stuff that applies to
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clockadj_compare, because they apply to the source code
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ahead of baseline currently used by StarlingX ]
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Signed-off-by: Douglas Henrique Koerich <douglashenrique.koerich@windriver.com>
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---
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phc2sys.c | 31 +++++++++++++++++++------------
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1 file changed, 19 insertions(+), 12 deletions(-)
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diff --git a/phc2sys.c b/phc2sys.c
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index 44d6872..7959015 100644
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--- a/phc2sys.c
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+++ b/phc2sys.c
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@@ -722,6 +722,7 @@ static int do_loop(struct phc2sys_private *priv, int subscriptions)
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struct clock *clock;
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uint64_t ts;
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int64_t offset, delay;
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+ int err;
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interval.tv_sec = priv->phc_interval;
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interval.tv_nsec = (priv->phc_interval - interval.tv_sec) * 1e9;
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@@ -765,28 +766,34 @@ static int do_loop(struct phc2sys_private *priv, int subscriptions)
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if (clock->clkid == CLOCK_REALTIME &&
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priv->master->sysoff_method >= 0) {
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/* use sysoff */
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- if (sysoff_measure(CLOCKID_TO_FD(priv->master->clkid),
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- priv->master->sysoff_method,
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- priv->phc_readings,
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- &offset, &ts, &delay) < 0)
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- return -1;
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+ err = sysoff_measure(CLOCKID_TO_FD(priv->master->clkid),
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+ priv->master->sysoff_method,
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+ priv->phc_readings,
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+ &offset, &ts, &delay);
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} else if (priv->master->clkid == CLOCK_REALTIME &&
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clock->sysoff_method >= 0) {
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/* use reversed sysoff */
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- if (sysoff_measure(CLOCKID_TO_FD(clock->clkid),
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- clock->sysoff_method,
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- priv->phc_readings,
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- &offset, &ts, &delay) < 0)
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- return -1;
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- offset = -offset;
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- ts += offset;
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+ err = sysoff_measure(CLOCKID_TO_FD(clock->clkid),
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+ clock->sysoff_method,
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+ priv->phc_readings,
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+ &offset, &ts, &delay);
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+ if (!err) {
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+ offset = -offset;
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+ ts += offset;
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+ }
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} else {
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+ err = 0;
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/* use phc */
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if (!read_phc(priv->master->clkid, clock->clkid,
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priv->phc_readings,
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&offset, &ts, &delay))
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continue;
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}
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+ if (err == -EBUSY)
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+ continue;
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+ if (err)
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+ return -1;
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+
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update_clock(priv, clock, offset, ts, delay);
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}
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}
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--
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2.29.2
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