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Rozycki" , John Stultz CC: , , , , , , , Subject: [PATCH linux-next v4 0/4] Support timer drivers as loadable modules Date: Fri, 21 Apr 2023 11:46:45 +0800 Message-ID: <20230421034649.15247-1-walter.chang@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230420_204736_718634_19EE0301 X-CRM114-Status: GOOD ( 10.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Walter Chang 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel