From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 092763FB055; Tue, 28 Jul 2026 21:05:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785272758; cv=none; b=rd9TnhFWUVbtySoauwZJ0dZWTeaOHi1Igkz1A7yLPE5G0hEBir1XZPE0WQanmGpAJ3j/vCsq8qfE+Ye26EzSTYTTYttH7MIZcZEDOomfniTaRIvwfYRn2jc+WINl5I+kXW6rMsRkcRknDehrx8ZCz+irqSzcufyLwYNKl8k25Uw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785272758; c=relaxed/simple; bh=S/5DW2hjkaM7cYmmydyZZqcFKUAE06w0OdAuq926P4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kmCIKhdhH2oXqrg27n42+E/z0FAkIwGxTruLZjilUhzIcxXNmfT+cWKJo9eWUgoY/XKdl5AcB2fWT0A7YepOEZ1dmhB+RALQzA0+KEwON6e8rGtklIoubJjYZlxr8ukVw9kZ2qAOq6LllBYe81pCUah3s8hw/jTDoAkKMya4Vjg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 942151F000E9; Tue, 28 Jul 2026 21:05:56 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org, linux-perf-users@vger.kernel.org Cc: jic23@kernel.org, will@kernel.org, mark.rutland@arm.com, dave@stgolabs.net, sashiko-bot@kernel.org Subject: [PATCH 1/9] perf/cxl: Program the requested event group on configurable counters Date: Tue, 28 Jul 2026 14:05:43 -0700 Message-ID: <20260728210551.2449093-2-dave.jiang@intel.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260728210551.2449093-1-dave.jiang@intel.com> References: <20260728210551.2449093-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit cxl_pmu_get_event_idx() sets *counter_idx for a configurable counter but never sets *event_idx, so hwc->event_base stays 0 and cxl_pmu_event_start() programs event group 0 regardless of the group the user requested. Return the matched capability's event_idx. Fixes: 5d7107c72796 ("perf: CXL Performance Monitoring Unit driver") Reported-by: sashiko-bot@kernel.org Closes: https://sashiko.dev/#/patchset/20260715191454.459673-1-dave@stgolabs.net?part=1 Assisted-by: Claude:claude-opus-4-8 Signed-off-by: Dave Jiang --- drivers/perf/cxl_pmu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/perf/cxl_pmu.c b/drivers/perf/cxl_pmu.c index 68a54d97d2a8..e77c0650a7eb 100644 --- a/drivers/perf/cxl_pmu.c +++ b/drivers/perf/cxl_pmu.c @@ -552,6 +552,8 @@ static int cxl_pmu_get_event_idx(struct perf_event *event, int *counter_idx, return -EINVAL; *counter_idx = i; + if (event_idx) + *event_idx = pmu_ev->event_idx; return 0; } -- 2.55.0