linux-kernel - [PATCH v2 0/3] clocksouce/timer-clint|riscv: some improvements

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Message-ID: <20240406111757.1597-1-jszhang@kernel.org>
Date: Sat,  6 Apr 2024 19:17:54 +0800
From: Jisheng Zhang <jszhang@...nel.org>
To: Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Samuel Holland <samuel.holland@...ive.com>
Cc: linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: [PATCH v2 0/3] clocksouce/timer-clint|riscv: some improvements

This series is a simple improvement for timer-clint and timer-riscv:

Add set_state_shutdown for timer-clint, this hook is used when
switching clockevent from timer-clint to another timer.

Add set_state_oneshot_stopped for both timer-clint and timer-riscv,
this hook is to avoid spurious timer interrupts when KTIME_MAX is
usd. Check commit 8fff52fd5093 ("clockevents: Introduce
CLOCK_EVT_STATE_ONESHOT_STOPPED state") for more information.

Since v1:
  - use U64_MAX instead of ULONG_MAX in clint_clock_shutdown, this is
    to  "produce a 64-bit value on riscv32" as pointed out by Samuel

Jisheng Zhang (3):
  clocksource/drivers/timer-riscv: Add set_state_oneshot_stopped
  clocksource/drivers/timer-clint: Add set_state_shutdown
  clocksource/drivers/timer-clint: Add set_state_oneshot_stopped

 drivers/clocksource/timer-clint.c | 19 +++++++++++++++----
 drivers/clocksource/timer-riscv.c | 11 ++++++-----
 2 files changed, 21 insertions(+), 9 deletions(-)

-- 
2.43.0