{"id":2220901,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2220901/?format=json","web_url":"http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260408114952.400451460@kernel.org/","project":{"id":26,"url":"http://patchwork.ozlabs.org/api/1.1/projects/26/?format=json","name":"Netfilter Development","link_name":"netfilter-devel","list_id":"netfilter-devel.vger.kernel.org","list_email":"netfilter-devel@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20260408114952.400451460@kernel.org>","date":"2026-04-08T11:54:16","name":"[V2,07/11] alarmtimer: Convert posix timer functions to alarm_start_timer()","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":true,"hash":"b7b7167607ae29d4565b6f839284d17332948799","submitter":{"id":92397,"url":"http://patchwork.ozlabs.org/api/1.1/people/92397/?format=json","name":"Thomas Gleixner","email":"tglx@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260408114952.400451460@kernel.org/mbox/","series":[{"id":499126,"url":"http://patchwork.ozlabs.org/api/1.1/series/499126/?format=json","web_url":"http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=499126","date":"2026-04-08T11:53:41","name":"hrtimers: Prevent hrtimer interrupt starvation","version":2,"mbox":"http://patchwork.ozlabs.org/series/499126/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2220901/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220901/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","netfilter-devel@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=EHc079Co;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; helo=sin.lore.kernel.org;\n envelope-from=netfilter-devel+bounces-11720-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"EHc079Co\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201"],"Received":["from sin.lore.kernel.org (sin.lore.kernel.org [104.64.211.4])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4frM4c5HdMz1yD3\n\tfor ; Wed, 08 Apr 2026 21:57:20 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sin.lore.kernel.org (Postfix) with ESMTP id DC39F3033974\n\tfor ; Wed, 8 Apr 2026 11:54:58 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 5A7D73BF699;\n\tWed, 8 Apr 2026 11:54:19 +0000 (UTC)","from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id D46AB3B27F9;\n\tWed, 8 Apr 2026 11:54:18 +0000 (UTC)","by smtp.kernel.org (Postfix) with ESMTPSA id 55788C19421;\n\tWed, 8 Apr 2026 11:54:18 +0000 (UTC)"],"ARC-Seal":"i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775649258; cv=none;\n b=Cndn6ymEpAHpGq9g6oevKC6/0p6ehwvFVWtxcmPPTx6IW4v4hJO+IoROip/FELVbPPsX+nNSFCpyI9P2FHuYFqi85TX+LOIdWMfmnAa3C9GOLjkBtv4Jlgv+WlEx42N+8p8sApLdxJDOO5K+jNuH3Dj7ZSSOwqWUJjNKv1R83dk=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775649258; c=relaxed/simple;\n\tbh=vG3iCoV1k8fk4KDtM9Pf5Kh5C80uU4kxJ0l9q20QI6Y=;\n\th=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version:\n\t Content-Type;\n b=WWrxFVZciMjirrJLeqzqktc9KewApbO5jIGvlWLeFkH6RoTLyRFMr3lkG1ekZhcD/BfGdTB7NyeA9AZTtCCeBTibOq2n9Ope/gPMJBaWSp7y3QOPssRNmdzlZNvMp6t5SKctbhJzHmsncUulMMpL/g4GzSX4YqJ0Jyk9mj6VG2s=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=EHc079Co; arc=none smtp.client-ip=10.30.226.201","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775649258;\n\tbh=vG3iCoV1k8fk4KDtM9Pf5Kh5C80uU4kxJ0l9q20QI6Y=;\n\th=Date:From:To:Cc:Subject:References:From;\n\tb=EHc079CovQfn3Hb67IAa3y5x2eFgTcUByt7J7brNa8lC2z93ZsUfavTUqwXKT298r\n\t 4nPOidEPGfTZWPbSRZZEuINE+OrlB1dO1ThVupyA13zeLqcQPv+EVQnrF8muXJHiWA\n\t UqDpPIg853b9QfDoDBUMHltGfZjvs8RwCXe+Sr8yVjD9e22j2x+8EYcD2ObiY9r7Qu\n\t yhrl7wRZ3A48nsIcyw0Ex+nApnjNOLWOJg+SvzGmd3obna9XqlIlvElSbuN9HGJ107\n\t rXrHccNiXnIUMDg6koAaxLdMxuUg9daC7aS9Hn1E06jsIdv1VyvhOGHdO9jPWxNc5z\n\t 3kqpVdAFpozNA==","Date":"Wed, 08 Apr 2026 13:54:16 +0200","Message-ID":"<20260408114952.400451460@kernel.org>","User-Agent":"quilt/0.68","From":"Thomas Gleixner ","To":"LKML ","Cc":"John Stultz ,\n Stephen Boyd ,\n Calvin Owens ,\n Anna-Maria Behnsen ,\n Frederic Weisbecker ,\n \"Peter Zijlstra (Intel)\" ,\n Alexander Viro ,\n Christian Brauner ,\n Jan Kara ,\n linux-fsdevel@vger.kernel.org,\n Sebastian Reichel ,\n linux-pm@vger.kernel.org,\n Pablo Neira Ayuso ,\n Florian Westphal ,\n Phil Sutter ,\n netfilter-devel@vger.kernel.org,\n coreteam@netfilter.org","Subject":"[patch V2 07/11] alarmtimer: Convert posix timer functions to\n alarm_start_timer()","References":"<20260408102356.783133335@kernel.org>","Precedence":"bulk","X-Mailing-List":"netfilter-devel@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8"},"content":"Use the new alarm_start_timer() for arming and rearming posix interval\ntimers and for clock_nanosleep() so that already expired timers do not go\nthrough the full timer interrupt cycle.\n\nSigned-off-by: Thomas Gleixner \nAcked-by: John Stultz \nCc: Stephen Boyd \n---\nV2: Rename to alarm_start_timer()\n---\n kernel/time/alarmtimer.c | 20 +++++++++++++-------\n 1 file changed, 13 insertions(+), 7 deletions(-)","diff":"--- a/kernel/time/alarmtimer.c\n+++ b/kernel/time/alarmtimer.c\n@@ -560,8 +560,7 @@ static bool alarm_timer_rearm(struct k_i\n \tstruct alarm *alarm = &timr->it.alarm.alarmtimer;\n \n \ttimr->it_overrun += alarm_forward_now(alarm, timr->it_interval);\n-\talarm_start(alarm, alarm->node.expires);\n-\treturn true;\n+\treturn alarm_start_timer(alarm, alarm->node.expires, false);\n }\n \n /**\n@@ -625,11 +624,16 @@ static bool alarm_timer_arm(struct k_iti\n \n \tif (!absolute)\n \t\texpires = ktime_add_safe(expires, base->get_ktime());\n-\tif (sigev_none)\n+\n+\t/*\n+\t * sigev_none needs to update the expires value and pretend\n+\t * that the timer is queued\n+\t */\n+\tif (sigev_none) {\n \t\talarm->node.expires = expires;\n-\telse\n-\t\talarm_start(&timr->it.alarm.alarmtimer, expires);\n-\treturn true;\n+\t\treturn true;\n+\t}\n+\treturn alarm_start_timer(&timr->it.alarm.alarmtimer, expires, false);\n }\n \n /**\n@@ -736,7 +740,9 @@ static int alarmtimer_do_nsleep(struct a\n \talarm->data = (void *)current;\n \tdo {\n \t\tset_current_state(TASK_INTERRUPTIBLE);\n-\t\talarm_start(alarm, absexp);\n+\t\tif (!alarm_start_timer(alarm, absexp, false))\n+\t\t\talarm->data = NULL;\n+\n \t\tif (likely(alarm->data))\n \t\t\tschedule();\n \n","prefixes":["V2","07/11"]}