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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-237d83937b1sm101371455ad.52.2025.06.23.23.05.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Jun 2025 23:05:10 -0700 (PDT) From: Jie Gan To: Suzuki K Poulose , Mike Leach , James Clark , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Alexander Shishkin Cc: Tingwei Zhang , coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, jie.gan@oss.qualcomm.com Subject: [PATCH v3 06/10] coresight: tmc: add create/delete functions for etr_buf_node Date: Tue, 24 Jun 2025 14:04:34 +0800 Message-Id: <20250624060438.7469-7-jie.gan@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250624060438.7469-1-jie.gan@oss.qualcomm.com> References: <20250624060438.7469-1-jie.gan@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: XduDLCSWvyzdQfrMQh9Pf6vr744CxBIj X-Authority-Analysis: v=2.4 cv=Id+HWXqa c=1 sm=1 tr=0 ts=685a4025 cx=c_pps a=Qgeoaf8Lrialg5Z894R3/Q==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=6IFa9wvqVegA:10 a=EUspDBNiAAAA:8 a=k3jFKW3szlTOC2bxmxAA:9 a=x9snwWr2DeNwDh03kgHS:22 X-Proofpoint-GUID: XduDLCSWvyzdQfrMQh9Pf6vr744CxBIj X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjI0MDA1MSBTYWx0ZWRfX9khk5jtuUZen BgdeKjfJxq/NmDP6h3DSlZxs/zST4nRL61u1AvfkcekTvibNJX4QEtykdrEf8YLUseQAx2hPhBF Kq4fGIWVQpieAwipqVz48YwpTWz2WQm25EaZQi+ivhlxb6p45pJQ09PEhnPjLpEnFERG+0PG5NQ MO77KJm17icZwxITBD65kdjQ3ypFKGf+Gqmy954C4tl29URzBr+NvRZMzmAJ8Zmi7tjS5eeyJgI GWUq5mXfiYJurtd4mi7dXdG/VJpMQsKZoc2ady3/X9mJWXarkhr0OYfFHu2f6L5adOION/9zaz7 BgSvBR+bw0/2PJwRoXn24a6B4CcqSibS8hojE25YYoxxwpxr+rFIszkJa3jDYCoKpCoNZ6vapn+ HyH2N9GmVN1O5mhISDmvdy9Kao+tXLwmQwX39HRkT7QAe7i8yMJBt3YfHPlq9JVMwWcWcIJ2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-24_02,2025-06-23_07,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 mlxlogscore=999 phishscore=0 bulkscore=0 clxscore=1015 impostorscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 adultscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506240051 Create and insert or remove the etr_buf_node to/from the etr_buf_list. Signed-off-by: Jie Gan --- .../hwtracing/coresight/coresight-tmc-etr.c | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index b07fcdb3fe1a..4609df80ae38 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1909,6 +1909,55 @@ const struct coresight_ops tmc_etr_cs_ops = { .panic_ops = &tmc_etr_sync_ops, }; +static void tmc_delete_etr_buf_node(struct tmc_drvdata *drvdata) +{ + struct etr_buf_node *nd, *next; + + list_for_each_entry_safe(nd, next, &drvdata->etr_buf_list, node) { + if (nd->sysfs_buf == drvdata->sysfs_buf) { + list_del(&nd->node); + kfree(nd); + } else { + /* Free allocated buffers which are not utilized by ETR */ + list_del(&nd->node); + tmc_free_etr_buf(nd->sysfs_buf); + nd->sysfs_buf = NULL; + kfree(nd); + } + } +} + +static int tmc_create_etr_buf_node(struct tmc_drvdata *drvdata, struct etr_buf *alloc_buf) +{ + struct etr_buf_node *sysfs_buf_node; + struct etr_buf *sysfs_buf; + + if (!alloc_buf) { + sysfs_buf = tmc_alloc_etr_buf(drvdata, drvdata->size, 0, cpu_to_node(0), NULL); + if (IS_ERR(sysfs_buf)) + return PTR_ERR(sysfs_buf); + } else { + sysfs_buf = alloc_buf; + } + + sysfs_buf_node = kzalloc(sizeof(struct etr_buf_node), GFP_KERNEL); + if (IS_ERR(sysfs_buf_node)) { + if (!alloc_buf) + tmc_free_etr_buf(sysfs_buf); + return PTR_ERR(sysfs_buf_node); + } + + sysfs_buf_node->sysfs_buf = sysfs_buf; + sysfs_buf_node->reading = false; + if (!alloc_buf) + sysfs_buf_node->is_free = true; + else + sysfs_buf_node->is_free = false; + list_add(&sysfs_buf_node->node, &drvdata->etr_buf_list); + + return 0; +} + int tmc_read_prepare_etr(struct tmc_drvdata *drvdata) { int ret = 0;