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AJvYcCVGT5ypOZsq9wwvCrJ18Xzj/wyO3C2oRXBjUPIA7QOul79UVxlkLDxx7iphdwOX8q2F1zV7QvSf6Tp8@vger.kernel.org X-Gm-Message-State: AOJu0YzDSktQBYgptubLDFttIqB0R9fAeHo27XYDRtCHbmabz+befm3a EGrvAnPnjMdmoX94go36gbdz3pxFfimE9GIiariFQEXV1PlC1pcdxNKmgVVp5GAlaVFo+02DOzO LeDw9LI7rMvGE0Js7v4b2cRA5Tg== X-Google-Smtp-Source: AGHT+IHliF72RhoVlooK9L+c1Y4iuJGgr9wHIupvklzWWd4gEqQfjkuZNyDHtoJev6b5CUsHoC8Btppiv9aU79bLH+M= X-Received: from pggj2.prod.google.com ([2002:a63:cf02:0:b0:af2:3436:98b5]) (user=willmcvicker job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:2d28:b0:1f5:93b1:6a58 with SMTP id adf61e73a8af0-2009f5b912cmr30610075637.8.1743636888966; Wed, 02 Apr 2025 16:34:48 -0700 (PDT) Date: Wed, 2 Apr 2025 16:33:54 -0700 In-Reply-To: <20250402233407.2452429-1-willmcvicker@google.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250402233407.2452429-1-willmcvicker@google.com> X-Mailer: git-send-email 2.49.0.472.ge94155a9ec-goog Message-ID: <20250402233407.2452429-4-willmcvicker@google.com> Subject: [PATCH v2 3/7] clocksource/drivers/exynos_mct: Set local timer interrupts as percpu From: Will McVicker To: Catalin Marinas , Will Deacon , Peter Griffin , "=?UTF-8?q?Andr=C3=A9=20Draszik?=" , Tudor Ambarus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alim Akhtar , Daniel Lezcano , Thomas Gleixner , Saravana Kannan , Krzysztof Kozlowski Cc: Will McVicker , Donghoon Yu , Hosung Kim , kernel-team@android.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Youngmin Nam , linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org 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/+/03267fad19f093bac979ca78309483e9eb3a8d16] 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 device_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); -- 2.49.0.472.ge94155a9ec-goog