From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.210.172 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794699451; b=FtUQDLd6sWJNTj6U/YgImKjRGy4Mz6CjJFYlBI9oTIBMpLbd3RbEtYEcRfN4uG2ZbXB4 /F5U+qtM14Cn4Io15wA0DXpxnO3ogOAx+cofpav1f+M4xFmUkqqy8szkJYyHAIjg5vYB5 hrP4eaEqs/lJuuiC/xx0M1T3rma+RLICFEJ7dvYyYS3zkhZsp5dOGaN3WpbWa5La/K2V8 MA3cZT0gDJFZ04J0iCXstoftH0PLgUXUG16hLy7+CwMR2NH9AHGRpYixBJ+uuKgYOJiLN BpbrC5o/hRjfl0ubzawqEftpYXjAJ5CwD5ITVyZrU7qzZoPMsHF9uSKxElNf8u1mLMg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794699451; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=a/wS6Yxk7+tECj0s54STfUWVzey+C0tieK8m7kinAtY=; b=suon4dCaC6ZNBSNa8b+djSAqogmF7LczgxFT5VsGgNNnQY7d/ySgmvMPtvfl9AyHwNf2 +CypCbeR/Z4j+FsKV31HVoJgC6HxBu5FCyS1ULBdjaK4qr1M17fq/3VIC702qFnRxOAYu HcMMM3ThRBkuT/R0rISevEbU575EKkip4n0Pf6HhWDkSL/mX42teS63E2iCAsDJkw8zHA LIMAr+El1LA1F0QmMlVOLAwu+YGVL5VEbS4zBteIKNfxYWUH/7NPygSlrcZ+E3aWCXB+W jzamzLYNIFvXqr3sSmN1IDgOPDrSqYnTxRXgWLDE6fM+tC8QSCb82pOobrw2Ds3gUcQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=sGGj8G39; arc=none smtp.remote-ip=209.85.210.172 Received: from mail-pf1-f172.google.com (mail-pf1-f172.google.com [209.85.210.172]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D33CD606A332 for ; Sat, 14 Nov 2026 23:37:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org D33CD606A332 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=sGGj8G39 Received: by mail-pf1-f172.google.com with SMTP id d2e1a72fcca58-8b66d1a08ccso2410765b3a.1 for ; Sat, 14 Nov 2026 15:37:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1794699450; x=1795304250; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=a/wS6Yxk7+tECj0s54STfUWVzey+C0tieK8m7kinAtY=; b=sGGj8G399ZF31uILhnt5fqpBTS93oUlFlXCu9ne5PNel6hESS6eCg5Cx7fn3ZCBlFe oxdxc4STyzHOiUpheFiC2TsLQ/nQFezbJ1bVf98u+8/TdF8CZ4oolWnvdTaOjrpMgC9O mX+erfavcN+ALosfLrNvHxOUVX5hDGRCxrf2DYFN5vlwSqM6bz/bibjBYxVL4O9FO7Os kQqE/sTCymdhbLvav1w58eVJwr1Ak+cV4ilPGNYlgYUkVbt/72MvEq71q0AQ2uU5qKVQ bzJCsunwS+EYxAF4OdP66Q7clln3J7cD6t7FaUmp4sPiEadxRjJ7+PT1YCpvPhgNxRhs AWhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794699450; x=1795304250; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=a/wS6Yxk7+tECj0s54STfUWVzey+C0tieK8m7kinAtY=; b=nlJgHqolMiMhG2feNNPBRgj4Svc2SWmAEgUbr48GajJS+adQRW6d878IO0bLaAhtu+ 14ZQk08HPHg5wgKDd4dvOVbRBTSbq22RnqajnFdMpVfb3oGjEOze+Uwj/uqMyVune7GS 36mDs7Z14ia7m0jpS5pMdFQg48ilITBDT33yubzx58s8Op7Pt1I+swTHpIjr6Z2XL9gN L5BWWdVCn0Hfc/iZ3B2NbF4rnVOrcuQzIjV+NLAqXeS7GNiF0GGzaTE177Ez+bym3DMw 2FR5LMBc8G9NBXmzDdm4mlu8NxOaqsTbOeMM9Fgp3WAeSEr8qfpsP/RAQhAnBNcBFU6L vR7g== X-Forwarded-Encrypted: i=1; AL+hErFW24Uv4rPc6ZVfTurpV2tjkUi05Xqa6JEIx0enIN6x1nE+E9SvI5i1vj9ftnHvqXQ9FsJX8dSFwmLGrto=@vger.kernel.org X-Gm-Message-State: APuU4Z9EZerpwMUc8dz4E7/0fsDHBGhSrON/qZ22BedglynFOm/iv4HR dZQxv5iobevsAGP95EXyAQPaseQlA8xzHQ4Efl8H8AeTYW6tGmCgMYJ/ X-Gm-Gg: AYBFou1GCMxUPfN8CyvbNPTDhDHvHo4Q5B03S7/hmGbfO8zoGbE+s3yyZlV4C8apoR4 wWjlcjOse9w9m2pW/wzDT9aKBgangveic+BO5HozhINZcK2EYPBQa7sXRceVVi4U9zh/2BWUIgF kzW6nSGKnAKcOhmUAeHKE2jcYY9RE0tB4yxFTpx37qUCWJHcMvUvN5oEXsyTXPcumFyTEe8m4A1 VpzQbodWVmuALBDJd8HTJDhyVzSUknDdXEToq4/holgUYNviZNQqJNGn4OJVyaP3a0SpGOO6YtS Kauk5P1PYtMDS7Hj9zmOn3Pyl7O4VsUTe5UE/LKk0esaJatHHCt3QrSGsfump2c9HTAHgpCqI76 4D0Zgdq/lbis52KQRR++/SZJB0GqOUTovtpVsYk6h5itUfc1sIUoga6KqKvcb2m/BacA9yqSQnk OKh5hFB60TtZI+Eyo6BBZAiUpinPvz7fvGV0N2Bg/HnMj72qUi2n1MiuHJoId+ezkUYxkvasdbo UMLx6i6sa88hl2E/jY5TPdrjmy28g8fst51VP7sGvxMWPhzPkKKGj4JAlnD8334v2tdk80AFRtk G5oMXJAkMiMQ2GHD3MjzSAGYX7NpMsBj4z730XwQIEJUYZUUcpVyIFBwLdzM6TniKBWVA+BU4EF 3N2oQDvm6JOdjv1KjvoAImVZyKp3sYC39G4jAZxrA7NNff4xHxkh7/GVk6Ymp6o9YtvN5gFO6+d UkKg== X-Received: by 2002:a05:6a00:2c95:b0:878:34d7:697b with SMTP id d2e1a72fcca58-8beb7d1cca2mr6147034b3a.41.1794699450161; Sat, 14 Nov 2026 15:37:30 -0800 (PST) Received: from ryzen.lan ([2601:644:8000:37f::e34]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8bed2d0f473sm2306372b3a.53.2026.11.14.15.37.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Nov 2026 15:37:28 -0800 (PST) From: Rosen Penev To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Thomas Bogendoerfer , Thomas Gleixner Cc: Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Radu Rendec , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v2 2/4] irqchip/ath79-misc: map the performance counter interrupt on demand Date: Sat, 14 Nov 2026 15:37:16 -0800 Message-ID: <20261114233718.86520-3-rosenp@gmail.com> X-Mailer: git-send-email 2.56.1 In-Reply-To: <20261114233718.86520-1-rosenp@gmail.com> References: <20261114233718.86520-1-rosenp@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The MIPS perf code now asks for the counter overflow interrupt when the first event is created, instead of from an early_initcall. Create the mapping in get_c0_perfcount_int() then, instead of when the controller is initialized, so that the controller no longer has to be ready before the early initcalls. Signed-off-by: Rosen Penev --- drivers/irqchip/irq-ath79-misc.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/irqchip/irq-ath79-misc.c b/drivers/irqchip/irq-ath79-misc.c index 258b8e9a2d57..5cedea5234e0 100644 --- a/drivers/irqchip/irq-ath79-misc.c +++ b/drivers/irqchip/irq-ath79-misc.c @@ -23,11 +23,19 @@ #define ATH79_MISC_IRQ_COUNT 32 #define ATH79_MISC_PERF_IRQ 5 -static int ath79_perfcount_irq; +static struct irq_domain *ath79_misc_domain; +/* Called by the MIPS perf code when the first event is created. */ int get_c0_perfcount_int(void) { - return ath79_perfcount_irq; + unsigned int irq; + + if (!ath79_misc_domain) + return -1; + + irq = irq_create_mapping(ath79_misc_domain, ATH79_MISC_PERF_IRQ); + + return irq ? irq : -1; } EXPORT_SYMBOL_GPL(get_c0_perfcount_int); @@ -121,8 +129,6 @@ static void __init ath79_misc_intc_domain_init( { void __iomem *base = domain->host_data; - ath79_perfcount_irq = irq_create_mapping(domain, ATH79_MISC_PERF_IRQ); - /* Disable and clear all interrupts */ __raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE); __raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS); @@ -157,6 +163,7 @@ static int __init ath79_misc_intc_of_init( } ath79_misc_intc_domain_init(domain, irq); + ath79_misc_domain = domain; return 0; } -- 2.56.1