From nobody Wed Sep 10 05:59:23 2025 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 5EBA0311950; Mon, 8 Sep 2025 16:31:52 +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=1757349112; cv=none; b=QmE927BzwmNRVnOtcK6bdJvbJRyfo4Nt1ge//7mNn+n7H1D+S9yM0tuAN9uaSZrKvclnLIq1b7S8u+WKkNjwHdy4XkIlsPEfDDCzSgU3OBbzbEneQtCBG+4IQwQOB099q4ncs2fX4EAQqIDZSANjUTCx55zd8NwsC/zrV1pevTQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757349112; c=relaxed/simple; bh=34uZqtOIifxx7Qodt8KhbqZ4rpIhHdbh4fyeIBhH5VI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=uOsEeg6YJogTiAlE/qtgwcoAXZ5yMnkXmj7OQgxdqH6nluNAGsQ6DuIWGEjhUxf+GffUlqn/lpoDqJu6L2wm/BQorlCCEoN5eQ7Jn+ovLIKammDd4ADiZwRoGdfDJ+U/0Q0tGsBBi3pX9mihkDzVY6Ym6NfzfTX1R/Omky84bPw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Fb5GFOK+; 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="Fb5GFOK+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3B4D7C4CEF9; Mon, 8 Sep 2025 16:31:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757349112; bh=34uZqtOIifxx7Qodt8KhbqZ4rpIhHdbh4fyeIBhH5VI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fb5GFOK+rgyb5ds0tm+g9TuE1oDCmwFV0CBYo9vFZmd8YHy+ziAnur9Fc0uODcq70 VlsYxCDDb6mG7ZJxKyMMK3rmARq3vK8/t017NkWGz51+sLNQ/tbyU1cZ4785d0cgdP dZJ2pic9pufNEpJhKg12mQYKuizvSp5N70lC7u6F7zwwmk+7/chpac0c4Q4iB9ouFf fAZvTLW0SJVGcXe71JKHtBEW6DOnA3pl/7/I2HGwajKbthlS49V1Bgn6glOP3n9UeB 2kYD1UZd2Hv941e5oe83PqpGPd8Hgyj9JXy0671n1EKGxoVaGclkrNLTeDJVMcYKUF cOgOpex6toBMA== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1uvemU-00000004NTm-1jcW; Mon, 08 Sep 2025 16:31:50 +0000 From: Marc Zyngier To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org Cc: Thomas Gleixner , Mark Rutland , Will Deacon , "Rafael J. Wysocki" , Rob Herring , Saravana Kannan , Greg Kroah-Hartman , Sven Peter , Janne Grunau , Suzuki K Poulose , James Clark Subject: [PATCH 18/25] perf: arm_pmu: Request specific affinities for percpu NMI/IRQ Date: Mon, 8 Sep 2025 17:31:20 +0100 Message-Id: <20250908163127.2462948-19-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250908163127.2462948-1-maz@kernel.org> References: <20250908163127.2462948-1-maz@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 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, tglx@linutronix.de, mark.rutland@arm.com, will@kernel.org, rafael@kernel.org, robh@kernel.org, saravanak@google.com, gregkh@linuxfoundation.org, sven@kernel.org, j@jannau.net, suzuki.poulose@arm.com, james.clark@linaro.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Content-Type: text/plain; charset="utf-8" Let the PMU driver request both NMI and normal IRQs with an affinity mask matching the PMU affinity. Signed-off-by: Marc Zyngier --- drivers/perf/arm_pmu.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 044c9c6296997..0d64e929d9bf0 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -679,13 +679,14 @@ int armpmu_request_irq(struct arm_pmu * __percpu *arm= pmu, int irq, int cpu) } } else if (armpmu_count_irq_users(cpu, irq) =3D=3D 0) { err =3D request_percpu_nmi(irq, handler, "arm-pmu", - NULL, - &cpu_armpmu); + per_cpu(pmu_affinity, cpu), + armpmu); =20 /* If cannot get an NMI, get a normal interrupt */ if (err) { - err =3D request_percpu_irq(irq, handler, "arm-pmu", - &cpu_armpmu); + err =3D request_percpu_irq_affinity(irq, handler, "arm-pmu", + per_cpu(pmu_affinity, cpu), + armpmu); irq_ops =3D &percpu_pmuirq_ops; } else { has_nmi =3D true; --=20 2.39.2