From nobody Sun Feb 8 01:30:00 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E5B062CCA0 for ; Sat, 6 Apr 2024 11:31:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712403081; cv=none; b=N4m8ymYpPfI6KMrYVKoa53xjH5tgIKcPZnb6MwcreameH/YoAx01RmOdD2+hQL9/6XV8P8joqQOCVqMqmERmk6BjQeK7jPJpP1p/nfbONiKSD+y6t+enWo/4w1lqWo1sJblBbntyZky1Hj8I1urLjMOtP3MqYYXSKq5ojcON2vg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712403081; c=relaxed/simple; bh=kxw8lEOeXnx/duF9z7ST9TT/zC6EoGrvtJe8oJFI1B0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Dqowo22PocrAb6Jrr4hypscv6ZYG13lnYedtfZ6RjUjQscdW4P2+8OzwvfnpZZOsQKGumnOQerFTmO3wwIrNeKmVLx1J3YB/OVjyXDOXaayrOX2GO/TkFp4UbkIm8XWIyVkZrSYt6Ya9Isuu93z1Yt+Aewij/t81enR33OHUB50= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kD+KtTXj; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kD+KtTXj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D00C9C43390; Sat, 6 Apr 2024 11:31:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712403080; bh=kxw8lEOeXnx/duF9z7ST9TT/zC6EoGrvtJe8oJFI1B0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kD+KtTXj/GBjQUtr6D1v/myTGzsq973TWGwuzcxWDl6/CjFmbP50gM/JVNX58qrgd EUcASu06PHK5jfQ3QNBfcSNrsLpU7hjW9xVTzsUQ8BCdx59mBulPvueYfkwwhZh1D3 Ro4Cs/FOBTRN2zGolCo9LGk43zQhmZC/ZB4Rs4/PXyJS0X35Gg8HyttKhBQHaT3erO PhwZfs16AI77tZ+6Py0jXcj9ZcBwMwW/U+hAbUGaslrA9P4Owjs/jFxLQmXH62SGvh DOVmIxFb0qf+tnmLIuXObaJkPONg1btiKj9dDq/7L+WYYej7XRoQ4vdH8MUDWbgsXP +8m3vR/9SczOQ== From: Jisheng Zhang To: Daniel Lezcano , Thomas Gleixner , Paul Walmsley , Palmer Dabbelt , Albert Ou , Samuel Holland Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 1/3] clocksource/drivers/timer-riscv: Add set_state_oneshot_stopped Date: Sat, 6 Apr 2024 19:17:55 +0800 Message-ID: <20240406111757.1597-2-jszhang@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240406111757.1597-1-jszhang@kernel.org> References: <20240406111757.1597-1-jszhang@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" To avoid spurious timer interrupts when KTIME_MAX is used, we need to configure set_state_oneshot_stopped(). Although implementing this is optional, it still affects things like power management for the extra timer interrupt. Check commit 8fff52fd5093 ("clockevents: Introduce CLOCK_EVT_STATE_ONESHOT_STOPPED state") for more information. Signed-off-by: Jisheng Zhang --- drivers/clocksource/timer-riscv.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-= riscv.c index 48ce50c5f5e6..e661fc037337 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -69,11 +69,12 @@ static int riscv_clock_shutdown(struct clock_event_devi= ce *evt) =20 static unsigned int riscv_clock_event_irq; static DEFINE_PER_CPU(struct clock_event_device, riscv_clock_event) =3D { - .name =3D "riscv_timer_clockevent", - .features =3D CLOCK_EVT_FEAT_ONESHOT, - .rating =3D 100, - .set_next_event =3D riscv_clock_next_event, - .set_state_shutdown =3D riscv_clock_shutdown, + .name =3D "riscv_timer_clockevent", + .features =3D CLOCK_EVT_FEAT_ONESHOT, + .rating =3D 100, + .set_next_event =3D riscv_clock_next_event, + .set_state_shutdown =3D riscv_clock_shutdown, + .set_state_oneshot_stopped =3D riscv_clock_shutdown, }; =20 /* --=20 2.43.0