Messages in this thread | | | From | <> | Subject | [PATCH linux-next v4 0/4] Support timer drivers as loadable modules | Date | Fri, 21 Apr 2023 11:46:45 +0800 |
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From: Walter Chang <walter.chang@mediatek.com>
This set of patches aims to make SoC related timer drivers, such as timer-mediatek.c become loadable modules for the Generic Kernel Image (GKI).
This driver registers an always-on timer as tick_broadcast_device on MediaTek SoCs. If the system does not load this module at startup, system will also boot normally by using built-in `bc_hrtimer` instead. Besides, the previous experiment [1] indicates that the SYST/GPT, in combination with a loadable module, is fully operational.
The first three patches export functions and remove __init markings to support loadable timer modules.
The fourth patch makes timer-mediatek.c become loadable module for GKI.
[1] https://lore.kernel.org/all/32777456f8e0f98e4cd5b950f421d21f71b149cf.camel@mediatek.com/#t
[v4] - Fix review comments pointed by Angelo
[v3] - Rebase on linux-next
[v2] - Convert timer-mediatek.c driver to loadable module
Chun-Hung Wu (4): time/sched_clock: Export sched_clock_register() clocksource/drivers/mmio: Export clocksource_mmio_init() clocksource/drivers/timer-of: Remove __init markings clocksource/drivers/timer-mediatek: Make timer-mediatek become loadable module
drivers/clocksource/Kconfig | 2 +- drivers/clocksource/mmio.c | 8 ++++--- drivers/clocksource/timer-mediatek.c | 33 ++++++++++++++++++++++++++++ drivers/clocksource/timer-of.c | 23 +++++++++---------- drivers/clocksource/timer-of.h | 6 ++--- kernel/time/sched_clock.c | 4 ++-- 6 files changed, 56 insertions(+), 20 deletions(-)
-- 2.18.0
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