[PATCH v2 0/1] TCPM logbuffer wraparound
From: Badhri Jagan Sridharan
Date: Mon Nov 03 2025 - 00:25:04 EST
This is a follow up on a previous discussion:
https://lore.kernel.org/lkml/20230410073134.488762-1-badhri@xxxxxxxxxx/.
With this change, TCPM log buffer will now wrap around when full and
will not self-clear upon being read (dumped). A Kconfig option and a
corresponding debugfs file node are introduced to allow opt-in back to
the previous, non-wrapping, self-clearing behavior if required.
This is an interim step while TCPM logging infrastructure is migrated
to the standard event trace system.
Badhri Jagan Sridharan (1):
tcpm: Wraparound tcpm log and dont clear them when read
drivers/usb/typec/tcpm/Kconfig | 8 ++++++
drivers/usb/typec/tcpm/tcpm.c | 51 ++++++++++++++++++++++++++++++++--
2 files changed, 57 insertions(+), 2 deletions(-)
base-commit: 18514fd70ea4ca9de137bb3bceeac1bac4bcad75
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2.51.1.930.gacf6e81ea2-goog