From nobody Sat Feb 7 04:20:32 2026 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 0C31D85C59 for ; Wed, 24 Jan 2024 17:05:19 +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=1706115920; cv=none; b=OrZY4TSJLZiDsY+1DALORbwGqRorYtEnb3r3R6sKyMNXlYbyBCfGYupCe0foQklpW2gO9k1i1AKuNsR+PnJjdHojkEVycgCsaetIgnXIvsXEBYtytsJKEWwuilMiEw7VsK6rGuhvtHok5wDzA/4tabHqKft9D1b9jkifLzI1yS0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706115920; c=relaxed/simple; bh=BgMq2YElGqLaGH2mfhaxMYUEX5WNvbQSroN6VFODaUU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IalOgNjtasWD1DB43W5r+kt/QylKxVnilNFmKQgf3b1YCyHR7LxHWyw681gwvLWTXjG1HeLygAd7X1W6O3st7st5X+gcGZJGPjwcUPvQBJ9Ii+4N6seE7ZwtoKy0dJMdrpMKZxME3zc8s4Q4U6K6yUk4GVixjKNm+emXDgwdQKo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=R2DXBDkk; 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="R2DXBDkk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B2A3BC43399; Wed, 24 Jan 2024 17:05:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706115919; bh=BgMq2YElGqLaGH2mfhaxMYUEX5WNvbQSroN6VFODaUU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R2DXBDkkZHJUQjzAm0QNqlFd12H10f2Q2r/mGZsLT8iKi3Ub0XjWZuzC7FH0rrCnh 32adMHW4RZOCOAxHK6ViN++qd/NtrGkisLdVDwKtlQlthEgxB7PFQNYsCiLnkh1pyV pyObvs8UPCntxM2Pgqr7b+xiV3QoMjLFR7ad0EjUR9OQ3gR6yO9QFNNDEdNxJOL+SY PlaiqImx2VUYI5P0DcCYa2CHtdPFIj7PyYmx+Ikqrl3e/Z60UzGGY9DDOT8q6orWpl wyhIuFPlGwn/XhyFgJvRzZ2XfXGaYQFJmQK0+7q8H92U/Ws6fKw7+19gqNV8vUI3xE WzkeXnHu9LXSw== From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Thomas Gleixner , Ingo Molnar , Anna-Maria Behnsen , Peng Liu , Joel Fernandes Subject: [PATCH 04/15] tick: Use IS_ENABLED() whenever possible Date: Wed, 24 Jan 2024 18:04:48 +0100 Message-ID: <20240124170459.24850-5-frederic@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240124170459.24850-1-frederic@kernel.org> References: <20240124170459.24850-1-frederic@kernel.org> 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" Avoid ifdeferry if it can be converted to IS_ENABLED() whenever possible Signed-off-by: Frederic Weisbecker Reviewed-by: Thomas Gleixner --- kernel/time/tick-common.c | 4 +--- kernel/time/tick-sched.c | 14 +++++--------- 2 files changed, 6 insertions(+), 12 deletions(-) diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index e9138cd7a0f5..0084e1ae2583 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -111,15 +111,13 @@ void tick_handle_periodic(struct clock_event_device *= dev) =20 tick_periodic(cpu); =20 -#if defined(CONFIG_HIGH_RES_TIMERS) || defined(CONFIG_NO_HZ_COMMON) /* * The cpu might have transitioned to HIGHRES or NOHZ mode via * update_process_times() -> run_local_timers() -> * hrtimer_run_queues(). */ - if (dev->event_handler !=3D tick_handle_periodic) + if (IS_ENABLED(CONFIG_TICK_ONESHOT) && dev->event_handler !=3D tick_handl= e_periodic) return; -#endif =20 if (!clockevent_state_oneshot(dev)) return; diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 75385b9a233e..c311b7388685 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -186,7 +186,6 @@ static void tick_sched_do_timer(struct tick_sched *ts, = ktime_t now) { int cpu =3D smp_processor_id(); =20 -#ifdef CONFIG_NO_HZ_COMMON /* * Check if the do_timer duty was dropped. We don't care about * concurrency: This happens only when the CPU in charge went @@ -197,13 +196,13 @@ static void tick_sched_do_timer(struct tick_sched *ts= , ktime_t now) * If nohz_full is enabled, this should not happen because the * 'tick_do_timer_cpu' CPU never relinquishes. */ - if (unlikely(tick_do_timer_cpu =3D=3D TICK_DO_TIMER_NONE)) { + if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && + unlikely(tick_do_timer_cpu =3D=3D TICK_DO_TIMER_NONE)) { #ifdef CONFIG_NO_HZ_FULL WARN_ON_ONCE(tick_nohz_full_running); #endif tick_do_timer_cpu =3D cpu; } -#endif =20 /* Check if jiffies need an update */ if (tick_do_timer_cpu =3D=3D cpu) @@ -230,7 +229,6 @@ static void tick_sched_do_timer(struct tick_sched *ts, = ktime_t now) =20 static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs) { -#ifdef CONFIG_NO_HZ_COMMON /* * When we are idle and the tick is stopped, we have to touch * the watchdog as we might not schedule for a really long @@ -239,7 +237,7 @@ static void tick_sched_handle(struct tick_sched *ts, st= ruct pt_regs *regs) * idle" jiffy stamp so the idle accounting adjustment we do * when we go busy again does not account too many ticks. */ - if (ts->tick_stopped) { + if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && ts->tick_stopped) { touch_softlockup_watchdog_sched(); if (is_idle_task(current)) ts->idle_jiffies++; @@ -250,7 +248,7 @@ static void tick_sched_handle(struct tick_sched *ts, st= ruct pt_regs *regs) */ ts->next_tick =3D 0; } -#endif + update_process_times(user_mode(regs)); profile_tick(CPU_PROFILING); } @@ -1551,10 +1549,8 @@ void tick_cancel_sched_timer(int cpu) struct tick_sched *ts =3D &per_cpu(tick_cpu_sched, cpu); ktime_t idle_sleeptime, iowait_sleeptime; =20 -# ifdef CONFIG_HIGH_RES_TIMERS - if (ts->sched_timer.base) + if (IS_ENABLED(CONFIG_HIGH_RES_TIMERS) && ts->sched_timer.base) hrtimer_cancel(&ts->sched_timer); -# endif =20 idle_sleeptime =3D ts->idle_sleeptime; iowait_sleeptime =3D ts->iowait_sleeptime; --=20 2.43.0