{"id":2220899,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2220899/?format=json","web_url":"http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260408114952.266001916@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":"<20260408114952.266001916@kernel.org>","date":"2026-04-08T11:54:06","name":"[V2,05/11] posix-timers: Switch to hrtimer_start_expires_user()","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":true,"hash":"8705878344405e72445ef49af99b5eddb45b4ed3","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/20260408114952.266001916@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/2220899/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220899/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=upKcUMJW;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::12fc:5321; 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charset=UTF-8"},"content":"Switch the arm and rearm callbacks for hrtimer based posix timers over to\nhrtimer_start_expires_user() so that already expired timers are not\nqueued. Hand the result back to the caller, which then queues the signal.\n\nSigned-off-by: Thomas Gleixner \nAcked-by: Peter Zijlstra (Intel) \nCc: Anna-Maria Behnsen \nCc: Frederic Weisbecker \n\n---\n kernel/time/posix-timers.c | 11 ++++++-----\n 1 file changed, 6 insertions(+), 5 deletions(-)","diff":"--- a/kernel/time/posix-timers.c\n+++ b/kernel/time/posix-timers.c\n@@ -293,8 +293,7 @@ static bool common_hrtimer_rearm(struct\n \tstruct hrtimer *timer = &timr->it.real.timer;\n \n \ttimr->it_overrun += hrtimer_forward_now(timer, timr->it_interval);\n-\thrtimer_restart(timer);\n-\treturn true;\n+\treturn hrtimer_start_expires_user(timer, HRTIMER_MODE_ABS);\n }\n \n static bool __posixtimer_deliver_signal(struct kernel_siginfo *info, struct k_itimer *timr)\n@@ -829,9 +828,11 @@ static bool common_hrtimer_arm(struct k_\n \t\texpires = ktime_add_safe(expires, hrtimer_cb_get_time(timer));\n \thrtimer_set_expires(timer, expires);\n \n-\tif (!sigev_none)\n-\t\thrtimer_start_expires(timer, HRTIMER_MODE_ABS);\n-\treturn true;\n+\t/* For sigev_none pretend that the timer is queued */\n+\tif (sigev_none)\n+\t\treturn true;\n+\n+\treturn hrtimer_start_expires_user(timer, HRTIMER_MODE_ABS);\n }\n \n static int common_hrtimer_try_to_cancel(struct k_itimer *timr)\n","prefixes":["V2","05/11"]}