From nobody Sat Apr 18 09:57:05 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 ED0B3481252; Sat, 28 Feb 2026 15:37:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772293029; cv=none; b=mmoLTk19oEI5VeFvWFYUlbTstbcj26Df/ZEhDKOhrU+681nzbG2aOyzq4J7J0LZ8YtUHARV3dWFw/7xbGsM/Bt/BwYj0/ZRQsmvzkHMe1wCAA1k5mmzap+L+Six+UiIxmu46mHoXQW1HTbCHo/YGIAiRZUfm4d30Wm9QnKMID28= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772293029; c=relaxed/simple; bh=zls7RdYOLeL2asUk1KXw/BMe5qRDdSDWPWWEwWHSHIk=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=XutcyaeRi/09gsjYf20qthLiWj2uCeIwRQ+iZw30u7ZSmq9hrnnoSUJo6J+WV2YZolJTdC/zhrpewDTz0mkoTMdSGPdbtcavL5LpTWOXRvVec664Kzwdjtk2M5YI9UZMBgIT3L7doAb9grYB0KSfadtJo57Cu538Rp67YcycyBw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=1lzHdVM0; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=vEGAqDGF; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="1lzHdVM0"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="vEGAqDGF" Date: Sat, 28 Feb 2026 15:37:00 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1772293021; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wb89KAHbcVceWUZFY/+J3Jj4XpTrOZLu8cYxhARHNb0=; b=1lzHdVM0W47QoJ3+TIHdN0fLBaR7WoPcL7IE8Oxic7IlP0oDJAWgHq/EkSrsNeCQtZtEUs QdqLi88KKD7p8eqEBPQ/qa5aM3+VaJO+C2h7J2ssJzqMIbeIE/15GXADq96el1Q1HDt35t UJGAHRIrtBZD6qo/lMW+vkZfWd1EMHsh6jT3j2GpQ+kHwY+v2UUjCLBfxyEL2rEFcFuJPH zorOrUoNbYmms0jvRz5f35cBWyIEFThFLgnP2Oh46MkKrnTyP453MEB0wRDmwBsz9BFh0J 9QVM9HAAcI6GmOBiDQJdonUVdpjeWngNg937CEtrIl4L0vzuEhKuTDlSvxFQcQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1772293021; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wb89KAHbcVceWUZFY/+J3Jj4XpTrOZLu8cYxhARHNb0=; b=vEGAqDGFsInoiycysnB2N9UbCRzEgc5/B9IU8KbQA5xtspS8lVDHcZIXmP3nvhTER3qpto R2aSTfJYcJSBc4Ag== From: "tip-bot2 for Thomas Gleixner" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: sched/hrtick] sched: Avoid ktime_get() indirection Cc: Thomas Gleixner , "Peter Zijlstra (Intel)" , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260224163429.001511662@kernel.org> References: <20260224163429.001511662@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <177229302015.1647592.15855095407485608814.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the sched/hrtick branch of tip: Commit-ID: d70c1080a957a5144e6c40e95bcbe04ab542fe05 Gitweb: https://git.kernel.org/tip/d70c1080a957a5144e6c40e95bcbe04ab= 542fe05 Author: Thomas Gleixner AuthorDate: Tue, 24 Feb 2026 17:35:32 +01:00 Committer: Peter Zijlstra CommitterDate: Fri, 27 Feb 2026 16:40:04 +01:00 sched: Avoid ktime_get() indirection 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 Signed-off-by: Peter Zijlstra (Intel) Link: https://patch.msgid.link/20260224163429.001511662@kernel.org --- kernel/sched/core.c | 3 +-- kernel/sched/deadline.c | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 7597776..a716cc6 100644 --- 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 =3D &rq->hrtick_timer; s64 delta; =20 /* @@ -933,7 +932,7 @@ void hrtick_start(struct rq *rq, u64 delay) * doesn't make sense and can cause timer DoS. */ delta =3D max_t(s64, delay, 10000LL); - rq->hrtick_time =3D ktime_add_ns(hrtimer_cb_get_time(timer), delta); + rq->hrtick_time =3D ktime_add_ns(ktime_get(), delta); =20 if (rq =3D=3D this_rq()) __hrtick_restart(rq); diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index d08b004..9d619a4 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1097,7 +1097,7 @@ static int start_dl_timer(struct sched_dl_entity *dl_= se) act =3D ns_to_ktime(dl_next_period(dl_se)); } =20 - now =3D hrtimer_cb_get_time(timer); + now =3D ktime_get(); delta =3D ktime_to_ns(now) - rq_clock(rq); act =3D ktime_add_ns(act, delta); =20