From nobody Fri Dec 26 19:23:19 2025 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 2292E53A5 for ; Tue, 2 Jan 2024 07:32:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lfcmYcFy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AFDF6C433C8; Tue, 2 Jan 2024 07:32:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1704180743; bh=OV5kQZVtgYNjmq8xkJXDaZLj5pV6ouoj+mekcsjkUbw=; h=From:To:Cc:Subject:Date:From; b=lfcmYcFy9H2YhEXtMCT30jydaiWMpym50FEYmk4ujJgEuOo82ndTjafV3Jwem+h6o hrKzNvd67MsZbUwccQzsqVxe45tO2SVdL6tpbuoy/Z6aTjSDFeQf1NDy0odHpWgOvm IjxOND1U5cuuFOyxnV3MvjaHwbrPtHH1wvY+JfvP+riFcgWv1v4eY4uk4kvNe3r3KP mh9xPp45pOk46m+wFFgL0A2LCZJeSbh7ModG+D2fDaxGspJKuMuUTsPgZEgtRwVwdI va9u9pzENaG1AxuTTxbaVsyprQyCkwn4jnZH/E/zvcRNuuAizLH2I09BgwrcUDt2uI jJ8gPLcJmd3vg== From: alexs@kernel.org To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira , Valentin Schneider , linux-kernel@vger.kernel.org Cc: curuwang@tencent.com, Alex Shi Subject: [PATCH] sched/tracing: correct the task blocking state Date: Tue, 2 Jan 2024 15:33:51 +0800 Message-ID: <20240102073351.1527503-1-alexs@kernel.org> X-Mailer: git-send-email 2.43.0 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" From: Alex Shi commit 80ed87c8a9ca ("sched/wait: Introduce TASK_NOLOAD and TASK_IDLE") stopped the idle kthreads contribution to loadavg. Also task idle should separated from blocked state too, otherwise we will get incorrect task blocking state from event tracing sched:sched_stat_blocked. Originally-from: Curu Wong Signed-off-by: Alex Shi To: linux-kernel@vger.kernel.org To: Valentin Schneider To: Daniel Bristot de Oliveira To: Mel Gorman To: Ben Segall To: Steven Rostedt To: Dietmar Eggemann To: Vincent Guittot To: Juri Lelli To: Peter Zijlstra To: Ingo Molnar --- include/linux/sched.h | 4 ++++ kernel/sched/deadline.c | 2 +- kernel/sched/fair.c | 2 +- kernel/sched/rt.c | 2 +- 4 files changed, 7 insertions(+), 3 deletions(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 292c31697248..341e62255ea7 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -140,6 +140,10 @@ struct user_event_mm; #define is_special_task_state(state) \ ((state) & (__TASK_STOPPED | __TASK_TRACED | TASK_PARKED | TASK_DEAD)) =20 +/* blocked task is UNINTERRUPTIBLE but not NOLOAD */ +#define is_blocked_task_state(state) \ + ((state) & TASK_UNINTERRUPTIBLE && (!((state) & TASK_NOLOAD))) + #ifdef CONFIG_DEBUG_ATOMIC_SLEEP # define debug_normal_state_change(state_value) \ do { \ diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index b28114478b82..b6afa596f071 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1570,7 +1570,7 @@ update_stats_dequeue_dl(struct dl_rq *dl_rq, struct s= ched_dl_entity *dl_se, __schedstat_set(p->stats.sleep_start, rq_clock(rq_of_dl_rq(dl_rq))); =20 - if (state & TASK_UNINTERRUPTIBLE) + if (is_blocked_task_state(state)) __schedstat_set(p->stats.block_start, rq_clock(rq_of_dl_rq(dl_rq))); } diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index d7a3c63a2171..349b0c5104b6 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1281,7 +1281,7 @@ update_stats_dequeue_fair(struct cfs_rq *cfs_rq, stru= ct sched_entity *se, int fl if (state & TASK_INTERRUPTIBLE) __schedstat_set(tsk->stats.sleep_start, rq_clock(rq_of(cfs_rq))); - if (state & TASK_UNINTERRUPTIBLE) + if (is_blocked_task_state(state)) __schedstat_set(tsk->stats.block_start, rq_clock(rq_of(cfs_rq))); } diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index 6aaf0a3d6081..2fdf3d71428d 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -1375,7 +1375,7 @@ update_stats_dequeue_rt(struct rt_rq *rt_rq, struct s= ched_rt_entity *rt_se, __schedstat_set(p->stats.sleep_start, rq_clock(rq_of_rt_rq(rt_rq))); =20 - if (state & TASK_UNINTERRUPTIBLE) + if (is_blocked_task_state(state)) __schedstat_set(p->stats.block_start, rq_clock(rq_of_rt_rq(rt_rq))); } --=20 2.43.0