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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23de4334005sm86138255ad.158.2025.07.13.23.31.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 13 Jul 2025 23:31:46 -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 , Tingwei Zhang , Yuanfang Zhang , Mao Jinlong , Jie Gan Cc: 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 Subject: [PATCH v3 RESEND 06/10] coresight: tmc: add create/delete functions for etr_buf_node Date: Mon, 14 Jul 2025 14:31:05 +0800 Message-Id: <20250714063109.591-7-jie.gan@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250714063109.591-1-jie.gan@oss.qualcomm.com> References: <20250714063109.591-1-jie.gan@oss.qualcomm.com> 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-Authority-Analysis: v=2.4 cv=e7gGSbp/ c=1 sm=1 tr=0 ts=6874a455 cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=Wb1JkmetP80A:10 a=EUspDBNiAAAA:8 a=k3jFKW3szlTOC2bxmxAA:9 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-GUID: GI2Pce_Zay2WZXAuApOxutH0rS1yZ9_C X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzE0MDAzNyBTYWx0ZWRfX2iN+yUcoTpaE 2FG92mkp1tLXUtgXdL0ltO6kfUpQUtJ5ARuCvOP2160BenU3O5HTCywewIQ5oZG+UAY0xojF3vx qEQ98sJ4UncfKanP98x1aVTQlckh31gH7VLeXJFjknf2sunGqTIBWztTQ03iyhHZbqjUORO6xRm 1yLrQILg7C1JHe0fNvUbJmvzopB2qpIUHoff09URuRZyr/QXw3G95/rz37hpyNKdSQbDkl5i9jy 0Fwajq5xFUPy4Vom7/e1WYPjKg4e1GDeemKgAePn0IRZF59wltpLVEWRdgBfau9hJllOX2ki22F k5KBjpI5yYrWB+siC495857ODEME+cdOENMn95rD7beg6G9rsE/3c8Usr8sltM0s22DW0Die/UX JmKE0lrm5XOuHXf8sLOrczzkkkYOH/CJs5/jhGhUhJmf0so8dKoLgc7fkq6dOuF1lx2Zky30 X-Proofpoint-ORIG-GUID: GI2Pce_Zay2WZXAuApOxutH0rS1yZ9_C 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=2025-07-14_01,2025-07-09_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 mlxscore=0 spamscore=0 suspectscore=0 phishscore=0 bulkscore=0 impostorscore=0 clxscore=1015 adultscore=0 malwarescore=0 mlxlogscore=999 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507140037 Content-Type: text/plain; charset="utf-8" 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/hwtr= acing/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 =3D { .panic_ops =3D &tmc_etr_sync_ops, }; =20 +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 =3D=3D 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 =3D 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 =3D 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 =3D alloc_buf; + } + + sysfs_buf_node =3D 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 =3D sysfs_buf; + sysfs_buf_node->reading =3D false; + if (!alloc_buf) + sysfs_buf_node->is_free =3D true; + else + sysfs_buf_node->is_free =3D false; + list_add(&sysfs_buf_node->node, &drvdata->etr_buf_list); + + return 0; +} + int tmc_read_prepare_etr(struct tmc_drvdata *drvdata) { int ret =3D 0; --=20 2.34.1