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AJvYcCW6tkDbAi3LTfrZOYmTbCb52jz8igeqQpOCwM1AL/9E+bNO/qcBw9lD78RdwyFiLoN8e0kNeQyY06wFfes=@vger.kernel.org X-Gm-Message-State: AOJu0YwMhsg85kSmT0VOCGQLB5KNwBVaZg8o55Xrsb6gr3NzIY4Zu0b3 9WtOOTUKTUMlqVEbgcnckxbqd/Ta/JbproOkMC58xHqfUCc+blgane4I5Km5e+GtRnLVPQC9+ur ukF5S8rZC1hMMT44SJlDWOfzkr4F1aw== X-Google-Smtp-Source: AGHT+IHoiuIPOX5cQFNIBafAR41PjPYk18rc3/O/j6tqRVu5p45znC4S855hKfUC4szgUQ9hnGaEGhg3C2WZ1qgdT6c= X-Received: from pfrb30.prod.google.com ([2002:aa7:8ede:0:b0:748:d81f:a79e]) (user=willmcvicker job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:7702:b0:220:658:855 with SMTP id adf61e73a8af0-22026d72b49mr5784487637.13.1750443466155; Fri, 20 Jun 2025 11:17:46 -0700 (PDT) Date: Fri, 20 Jun 2025 11:17:06 -0700 In-Reply-To: <20250620181719.1399856-1-willmcvicker@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250620181719.1399856-1-willmcvicker@google.com> X-Mailer: git-send-email 2.50.0.rc2.761.g2dc52ea45b-goog Message-ID: <20250620181719.1399856-4-willmcvicker@google.com> Subject: [PATCH v4 3/6] clocksource/drivers/exynos_mct: Set local timer interrupts as percpu From: Will McVicker To: Catalin Marinas , Will Deacon , Daniel Lezcano , Thomas Gleixner , Krzysztof Kozlowski , Alim Akhtar , Rob Herring , Saravana Kannan Cc: Will McVicker , Donghoon Yu , Hosung Kim , kernel-team@android.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, John Stultz , Youngmin Nam , Peter Griffin , Tudor Ambarus , "=?UTF-8?q?Andr=C3=A9=20Draszik?=" , Conor Dooley , linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Hosung Kim To allow the CPU to handle it's own clock events, we need to set the IRQF_PERCPU flag. This prevents the local timer interrupts from migrating to other CPUs. Signed-off-by: Hosung Kim [Original commit from https://android.googlesource.com/kernel/gs/+/03267fad= 19f093bac979ca78309483e9eb3a8d16] Reviewed-by: Peter Griffin Reviewed-by: Youngmin Nam Tested-by: Youngmin Nam Signed-off-by: Will McVicker --- drivers/clocksource/exynos_mct.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_= mct.c index 96361d5dc57d..a5ef7d64b1c2 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -596,7 +596,8 @@ static int __init exynos4_timer_interrupts(struct devic= e_node *np, irq_set_status_flags(mct_irq, IRQ_NOAUTOEN); if (request_irq(mct_irq, exynos4_mct_tick_isr, - IRQF_TIMER | IRQF_NOBALANCING, + IRQF_TIMER | IRQF_NOBALANCING | + IRQF_PERCPU, pcpu_mevt->name, pcpu_mevt)) { pr_err("exynos-mct: cannot register IRQ (cpu%d)\n", cpu); --=20 2.50.0.rc2.761.g2dc52ea45b-goog