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AJvYcCUVN4VCGYvEsQnb0e7eMfH4rTx2Ep1XEM6fVB3fpOBE9X4jTPU9MohhXQWbGG6Zk01nW/HOtl1yeXgshqs=@vger.kernel.org X-Gm-Message-State: AOJu0Yy/cILtrFoI0coPmewCwrqFxGYfMOQoUWl/aNapQhqBSN3xUUKV ICm9nuFMJe05HOxpEOLc8tDHtFnOUBtPUvkh8e4/ULISjzcmedGfz37jeZRP/waqWhSzbtpQVch fm6X7LPEP7L9B/zMhzeQQuqBhbwhX9A== X-Google-Smtp-Source: AGHT+IGkZMpKJqJOm+EoIaC26wIwW3Vcq2H4akvTHbJ23iF2ppwmzR08YRck2L56OCpeCC/yq0C1twga9aOUBHTIEUQ= X-Received: from pjzm22.prod.google.com ([2002:a17:90b:696:b0:339:ee20:f620]) (user=willmcvicker job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:28c4:b0:32e:38b0:15f4 with SMTP id 98e67ed59e1d1-33bcf86bf50mr35134169a91.7.1761252787527; Thu, 23 Oct 2025 13:53:07 -0700 (PDT) Date: Thu, 23 Oct 2025 20:52:45 +0000 In-Reply-To: <20251023205257.2029526-1-willmcvicker@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251023205257.2029526-1-willmcvicker@google.com> X-Mailer: git-send-email 2.51.1.821.gb6fe4d2222-goog Message-ID: <20251023205257.2029526-4-willmcvicker@google.com> Subject: [PATCH v5 3/7] clocksource/drivers/exynos_mct: Set local timer interrupts as percpu From: Will McVicker To: Russell King , Catalin Marinas , Will Deacon , Daniel Lezcano , Thomas Gleixner , Krzysztof Kozlowski , Alim Akhtar , Hosung Kim , Will McVicker , Ingo Molnar , Peter Griffin , Youngmin Nam Cc: Donghoon Yu , Rob Herring , Saravana Kannan , John Stultz , Tudor Ambarus , "=?UTF-8?q?Andr=C3=A9=20Draszik?=" , Conor Dooley , Marek Szyprowski , linux-samsung-soc@vger.kernel.org, kernel-team@android.com, linux-arm-kernel@lists.infradead.org, linux-kernel@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 2.51.1.821.gb6fe4d2222-goog