From nobody Fri Dec 19 20:38:11 2025 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2C98C217F33 for ; Mon, 10 Nov 2025 02:59:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762743568; cv=none; b=WpR3HQfSSRWmNd2onHOhO/qIC4chtpZs+EUnK5ryIcq+7fvkXpwFcZPA/i0eaTZMxWMWF6EnwWBQTkJUyCD5xI2ATEojfEQ2vEls/jPoVvNO6MZJCrAXOtVpkLe1PkhW/HW2Z0mO0Y57sI9fmwBwJLOXIdxpU8h+WMN9MtfaVMc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762743568; c=relaxed/simple; bh=Xifd8ZaWsLkNZz0Hh8Km26lmPVu02yMtqS4EyhMVj80=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=V0OQiuUj8QQ2fRGKx46yzUF6hcKJep7riN1tK+WHvwM9dgjX/2jT6C+qt+hp9b13S+XGHSykrfXpQeMO7hqjOPEXHj+K5OxVMzRL/FE3g/+L/M13Kkhn2EyM4PXNkjuq1EACHvqIa9dx5sm55KZNs5AtPuB1E0+tVQeioyNLrLA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8BxndIEVRFpw0EhAA--.5888S3; Mon, 10 Nov 2025 10:59:16 +0800 (CST) Received: from linux.localdomain (unknown [113.200.148.30]) by front1 (Coremail) with SMTP id qMiowJCxXMH7VBFp6YktAQ--.14886S3; Mon, 10 Nov 2025 10:59:16 +0800 (CST) From: Tiezhu Yang To: Huacai Chen Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] LoongArch: Use CPUCFG6_PMNUM_SHIFT to get PMU number Date: Mon, 10 Nov 2025 10:59:05 +0800 Message-ID: <20251110025906.17096-2-yangtiezhu@loongson.cn> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20251110025906.17096-1-yangtiezhu@loongson.cn> References: <20251110025906.17096-1-yangtiezhu@loongson.cn> 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-CM-TRANSID: qMiowJCxXMH7VBFp6YktAQ--.14886S3 X-CM-SenderInfo: p1dqw3xlh2x3gn0dqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBj9xXoWrZFy5GFykCrW7tFW7Wr4xXwc_yoWfCrg_Gw nrG3s5Wr4kZan09wnFgw4Sqr15XwsagF95AF9rKws7G3s5uw45A3yUt34rZ3s5KrW7Zrs8 K3yrKF9IvF1j9osvyTuYvTs0mTUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUj1kv1TuYvT s0mT0YCTnIWjqI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUI cSsGvfJTRUUUb28YFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20x vaj40_Wr0E3s1l1IIY67AEw4v_JF0_JFyl8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxS w2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxV W8JVWxJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v2 6r4UJVWxJr1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44I27w Aqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jrv_JF1lYx0Ex4A2jsIE 14v26r4j6F4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCF04k20xvY0x 0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E 7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jrv_JF1lIxkGc2Ij64vIr41lIxAIcV C0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF 04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7 CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x07jnAwxUUUUU= Content-Type: text/plain; charset="utf-8" Use the existing CPUCFG6_PMNUM_SHIFT macro definition instead of the magic value 4 to get the PMU number. Signed-off-by: Tiezhu Yang --- arch/loongarch/kernel/perf_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/per= f_event.c index 8ad098703488..2d0c14bdadda 100644 --- a/arch/loongarch/kernel/perf_event.c +++ b/arch/loongarch/kernel/perf_event.c @@ -851,7 +851,7 @@ static int __init init_hw_perf_events(void) return -ENODEV; =20 pr_info("Performance counters: "); - counters =3D ((read_cpucfg(LOONGARCH_CPUCFG6) & CPUCFG6_PMNUM) >> 4) + 1; + counters =3D ((read_cpucfg(LOONGARCH_CPUCFG6) & CPUCFG6_PMNUM) >> CPUCFG6= _PMNUM_SHIFT) + 1; =20 loongarch_pmu.num_counters =3D counters; loongarch_pmu.max_period =3D (1ULL << 63) - 1; --=20 2.42.0