From mboxrd@z Thu Jan 1 00:00:00 1970 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 2887C3A7840 for ; Tue, 24 Feb 2026 16:35:35 +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=1771950936; cv=none; b=QOu7NcwHMSPH4ARrCXOlpSyGinwtSU1YLUCdhT3zlydi/BcFtZd58xQWIU4bDrhC2W1K17FXnIv880QKDptYB8kLCEkRBWckd4qfO4VgxahFlfqz20Z5ykDO9e9AdetaWGj5sg6eQnpWFtkcgg9lb9n/4N91mFKYei5WaV/cG+Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771950936; c=relaxed/simple; bh=eJ87CMH89ykbbm7nG6HB5qQBHC5/mNl/0SPW1KF+zUw=; h=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=uRC79CGdXR4097aDKmWGbhw9R5HQ4e7TtJvcZLaFH455VuHYDCbORr5agLsAlw0cfen9+KPcBn8B/EAtWzweHtGiGoeA6wf1t3lc9pGDwcN/C7HPA/nxBRh/1xuhgBDVC/aohLrP7lwKA0PV6kgNKixDaadLKuN7wscvaGfNs+Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hpflqh43; 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="hpflqh43" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47591C116D0; Tue, 24 Feb 2026 16:35:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771950935; bh=eJ87CMH89ykbbm7nG6HB5qQBHC5/mNl/0SPW1KF+zUw=; h=Date:From:To:Cc:Subject:References:From; b=hpflqh43JxqU4CLdS5G9nbE1W4o6pw/dX1K+oaxDzbq7xEU36ofXNphoLRrLfBD5+ /ybT0aCTE8250xnFQJmrCHVwzpORZh9NRQjskH/FDaBZbxXInCNcK0IQTCMhWNhDop VfL37ETTdJcyUKT+EcH6MQ6efUAgx4bUya8PWYEkFgzil1jZ2hU/84vYfnqKSNB9ie YOVtp1BE9ham2P2c7/suk7y+6y9RC8fjRPyB6bfYu/gcEEfaXnykor4CMN7mzxTAj3 tRNiQu9+IOapLqmfjzHHJkWgjibf/pnFBMbH25YzBf7a2t5JvnyHuDjnlgsP2ukbEW aOe/nkUTpewDQ== Date: Tue, 24 Feb 2026 17:35:32 +0100 Message-ID: <20260224163429.001511662@kernel.org> User-Agent: quilt/0.68 From: Thomas Gleixner To: LKML Cc: Anna-Maria Behnsen , John Stultz , Stephen Boyd , Daniel Lezcano , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , x86@kernel.org, Peter Zijlstra , Frederic Weisbecker , Eric Dumazet Subject: [patch 04/48] sched: Avoid ktime_get() indirection References: <20260224163022.795809588@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 The clock of the hrtick and deadline timers is known to be CLOCK_MONOTONIC. No point in looking it up via hrtimer_cb_get_time(). Just use ktime_get() directly. Signed-off-by: Thomas Gleixner --- kernel/sched/core.c | 3 +-- kernel/sched/deadline.c | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -925,7 +925,6 @@ static void __hrtick_start(void *arg) */ void hrtick_start(struct rq *rq, u64 delay) { - struct hrtimer *timer = &rq->hrtick_timer; s64 delta; /* @@ -933,7 +932,7 @@ void hrtick_start(struct rq *rq, u64 del * doesn't make sense and can cause timer DoS. */ delta = max_t(s64, delay, 10000LL); - rq->hrtick_time = ktime_add_ns(hrtimer_cb_get_time(timer), delta); + rq->hrtick_time = ktime_add_ns(ktime_get(), delta); if (rq == this_rq()) __hrtick_restart(rq); --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1097,7 +1097,7 @@ static int start_dl_timer(struct sched_d act = ns_to_ktime(dl_next_period(dl_se)); } - now = hrtimer_cb_get_time(timer); + now = ktime_get(); delta = ktime_to_ns(now) - rq_clock(rq); act = ktime_add_ns(act, delta);