From nobody Fri Feb 13 12:38:10 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92585CE7A91 for ; Mon, 25 Sep 2023 03:22:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230412AbjIYDXB (ORCPT ); Sun, 24 Sep 2023 23:23:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230194AbjIYDW7 (ORCPT ); Sun, 24 Sep 2023 23:22:59 -0400 Received: from out30-100.freemail.mail.aliyun.com (out30-100.freemail.mail.aliyun.com [115.124.30.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80783A3 for ; Sun, 24 Sep 2023 20:22:52 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R631e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046049;MF=renyu.zj@linux.alibaba.com;NM=1;PH=DS;RN=8;SR=0;TI=SMTPD_---0VsjxV8O_1695612156; Received: from srmbuffer011165236051.sqa.net(mailfrom:renyu.zj@linux.alibaba.com fp:SMTPD_---0VsjxV8O_1695612156) by smtp.aliyun-inc.com; Mon, 25 Sep 2023 11:22:50 +0800 From: Jing Zhang To: Robin Murphy , Ilkka Koskinen , Will Deacon , Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Shuai Xue , Zhuo Song Subject: [PATCH] perf/arm-cmn: Fix the unhandled overflow status of counter 4 to 7 Date: Mon, 25 Sep 2023 11:22:32 +0800 Message-Id: <1695612152-123633-1-git-send-email-renyu.zj@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The register por_dt_pmovsr Bits[7:0] indicates overflow from counters 7 to 0. But in arm_cmn_handle_irq(), only handled the overflow status of Bits[3:0] which results in unhandled overflow status of counters 4 to 7. So let the overflow status of DTC counters 4 to 7 to be handled. Fixes: 0ba64770a2f2 ("perf: Add Arm CMN-600 PMU driver") Signed-off-by: Jing Zhang Reviewed-by: Robin Murphy --- drivers/perf/arm-cmn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 913dc04..6b50bc5 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -1972,7 +1972,7 @@ static irqreturn_t arm_cmn_handle_irq(int irq, void *= dev_id) u64 delta; int i; =20 - for (i =3D 0; i < CMN_DTM_NUM_COUNTERS; i++) { + for (i =3D 0; i < CMN_DT_NUM_COUNTERS; i++) { if (status & (1U << i)) { ret =3D IRQ_HANDLED; if (WARN_ON(!dtc->counters[i])) --=20 1.8.3.1