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AJvYcCWT3SFns3uL5DxF6Hd+341ASUoKUPqN26NWQLx1HESGE26YmeUR+pKV7O+iRfyJbjzmBEHMW1PUZvTHq98=@vger.kernel.org X-Gm-Message-State: AOJu0YweAQvZIEsvTsc/8Tz/UbOWZXEQvsRE9C/pX7EUH1wHMujsLZM3 MWA5DAMk5LC0WnwTMM8jCv/SV7qFesLZzOCKCuzIVBDE9i9qJs3IOJ1+uVTpOOkM3laFjuNk+Gw iKCw1WSDWAVs7L5Vb3uk6IH5kSu/Gxw== X-Google-Smtp-Source: AGHT+IGL+5kVHhQd1OfDjE63ymS8X2c8akCZDgOtgOFkQSZNDy1zc7o/AWAgmT8EIgOAV2XCAQ/VH6rMwtmcpBUAUkk= X-Received: from pjqt14.prod.google.com ([2002:a17:90a:ae0e:b0:33b:c59f:b015]) (user=willmcvicker job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:998a:b0:331:e662:c97e with SMTP id adf61e73a8af0-334a86172d0mr31428687637.37.1761252654301; Thu, 23 Oct 2025 13:50:54 -0700 (PDT) Date: Thu, 23 Oct 2025 20:50:29 +0000 In-Reply-To: <20251023205041.2027336-1-willmcvicker@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251023205041.2027336-1-willmcvicker@google.com> X-Mailer: git-send-email 2.51.1.821.gb6fe4d2222-goog Message-ID: <20251023205041.2027336-4-willmcvicker@google.com> Subject: [PATCH 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 , Peter Griffin , Ingo Molnar , Youngmin Nam , Will McVicker , Hosung Kim 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