The coresight_desc structure is a temporary structure for passing the
information to the coresight_device structure during registration.

Introduces a new "cpu" field in both structures to store the CPU ID. For
components that are not CPU bound, set this field to -1.

Signed-off-by: Leo Yan <leo.yan@arm.com>
---
 drivers/hwtracing/coresight/coresight-catu.c       | 1 +
 drivers/hwtracing/coresight/coresight-core.c       | 1 +
 drivers/hwtracing/coresight/coresight-ctcu-core.c  | 1 +
 drivers/hwtracing/coresight/coresight-cti-core.c   | 1 +
 drivers/hwtracing/coresight/coresight-dummy.c      | 1 +
 drivers/hwtracing/coresight/coresight-etb10.c      | 1 +
 drivers/hwtracing/coresight/coresight-etm3x-core.c | 1 +
 drivers/hwtracing/coresight/coresight-etm4x-core.c | 1 +
 drivers/hwtracing/coresight/coresight-funnel.c     | 1 +
 drivers/hwtracing/coresight/coresight-replicator.c | 1 +
 drivers/hwtracing/coresight/coresight-stm.c        | 1 +
 drivers/hwtracing/coresight/coresight-tmc-core.c   | 1 +
 drivers/hwtracing/coresight/coresight-tpda.c       | 1 +
 drivers/hwtracing/coresight/coresight-tpdm.c       | 1 +
 drivers/hwtracing/coresight/coresight-tpiu.c       | 1 +
 drivers/hwtracing/coresight/coresight-trbe.c       | 1 +
 drivers/hwtracing/coresight/ultrasoc-smb.c         | 1 +
 include/linux/coresight.h                          | 4 ++++
 18 files changed, 21 insertions(+)

diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c
index 5058432233da1932f1965008fc1b98b560490414..266d1fc2f5a8c572d4a373dc42d752090aa60505 100644
--- a/drivers/hwtracing/coresight/coresight-catu.c
+++ b/drivers/hwtracing/coresight/coresight-catu.c
@@ -565,6 +565,7 @@ static int __catu_probe(struct device *dev, struct resource *res)
 	catu_desc.type = CORESIGHT_DEV_TYPE_HELPER;
 	catu_desc.subtype.helper_subtype = CORESIGHT_DEV_SUBTYPE_HELPER_CATU;
 	catu_desc.ops = &catu_ops;
+	catu_desc.cpu = -1;
 
 	coresight_clear_self_claim_tag(&catu_desc.access);
 	drvdata->csdev = coresight_register(&catu_desc);
diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index fa758cc21827552a5c97b6bdd05d22dec4994b22..1a4bde5d6cd8fcfdd43bcafb45aa4dc5f1dd2d34 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -1334,6 +1334,7 @@ struct coresight_device *coresight_register(struct coresight_desc *desc)
 	csdev->ops = desc->ops;
 	csdev->access = desc->access;
 	csdev->orphan = true;
+	csdev->cpu = desc->cpu;
 
 	csdev->dev.type = &coresight_dev_type[desc->type];
 	csdev->dev.groups = desc->groups;
diff --git a/drivers/hwtracing/coresight/coresight-ctcu-core.c b/drivers/hwtracing/coresight/coresight-ctcu-core.c
index c6bafc96db963310b5e77a095953c83a172cfc7c..f9aaf6f87445a17f7348e7c03bc524834f8e2f20 100644
--- a/drivers/hwtracing/coresight/coresight-ctcu-core.c
+++ b/drivers/hwtracing/coresight/coresight-ctcu-core.c
@@ -231,6 +231,7 @@ static int ctcu_probe(struct platform_device *pdev)
 	desc.dev = dev;
 	desc.ops = &ctcu_ops;
 	desc.access = CSDEV_ACCESS_IOMEM(base);
+	desc.cpu = -1;
 
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev)) {
diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c
index 8fb30dd73fd20ae613a45b1a467f457a046a9412..2c8bf5dbe8b8206c92ae5ea64a26c947ef5b9582 100644
--- a/drivers/hwtracing/coresight/coresight-cti-core.c
+++ b/drivers/hwtracing/coresight/coresight-cti-core.c
@@ -931,6 +931,7 @@ static int cti_probe(struct amba_device *adev, const struct amba_id *id)
 	cti_desc.ops = &cti_ops;
 	cti_desc.groups = drvdata->ctidev.con_groups;
 	cti_desc.dev = dev;
+	cti_desc.cpu = drvdata->ctidev.cpu;
 
 	coresight_clear_self_claim_tag(&cti_desc.access);
 	drvdata->csdev = coresight_register(&cti_desc);
diff --git a/drivers/hwtracing/coresight/coresight-dummy.c b/drivers/hwtracing/coresight/coresight-dummy.c
index aaa92b5081e3d2bb85d57f90ab68a1dc6a1f0dd8..63c14319ad923ba1444c5f5f9d76ca48e308e8e4 100644
--- a/drivers/hwtracing/coresight/coresight-dummy.c
+++ b/drivers/hwtracing/coresight/coresight-dummy.c
@@ -179,6 +179,7 @@ static int dummy_probe(struct platform_device *pdev)
 
 	desc.pdata = pdev->dev.platform_data;
 	desc.dev = &pdev->dev;
+	desc.dev = -1;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev)) {
 		ret = PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c
index d5efb085b30d36b51ca591c1b595ef82481f5569..4d59e668d7f6189a4de23064a0a8146a09931b79 100644
--- a/drivers/hwtracing/coresight/coresight-etb10.c
+++ b/drivers/hwtracing/coresight/coresight-etb10.c
@@ -772,6 +772,7 @@ static int etb_probe(struct amba_device *adev, const struct amba_id *id)
 	desc.pdata = pdata;
 	desc.dev = dev;
 	desc.groups = coresight_etb_groups;
+	desc.cpu = -1;
 
 	coresight_clear_self_claim_tag(&desc.access);
 	drvdata->csdev = coresight_register(&desc);
diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c
index 0f160f2f97344e6a96343cd8658f4f19806193e0..a316e380df263f95c818e8eac44398482847b841 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c
@@ -892,6 +892,7 @@ static int etm_probe(struct amba_device *adev, const struct amba_id *id)
 	desc.pdata = pdata;
 	desc.dev = dev;
 	desc.groups = coresight_etm_groups;
+	desc.cpu = drvdata->cpu;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev))
 		return PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 6ef1f2ea1a805b07bcac70b6034bab85cec604be..0a585d7e0ab873ea4568e3318b0526b77a2e65e7 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -2059,6 +2059,7 @@ static int etm4_add_coresight_dev(struct etm4_init_arg *init_arg)
 	desc.pdata = pdata;
 	desc.dev = dev;
 	desc.groups = coresight_etmv4_groups;
+	desc.cpu = drvdata->cpu;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev))
 		return PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c
index b1922dbe9292b02c91ca5730998e59ecdb08fdc7..3cab9b305ea2cdb1fea3d7b63ddf491897039c18 100644
--- a/drivers/hwtracing/coresight/coresight-funnel.c
+++ b/drivers/hwtracing/coresight/coresight-funnel.c
@@ -273,6 +273,7 @@ static int funnel_probe(struct device *dev, struct resource *res)
 	desc.ops = &funnel_cs_ops;
 	desc.pdata = pdata;
 	desc.dev = dev;
+	desc.cpu = -1;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev)) {
 		ret = PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c
index 06efd2b01a0f71620eac71166567d14655b58403..1154b7d222381a435f14e217d891377a9bb80a71 100644
--- a/drivers/hwtracing/coresight/coresight-replicator.c
+++ b/drivers/hwtracing/coresight/coresight-replicator.c
@@ -284,6 +284,7 @@ static int replicator_probe(struct device *dev, struct resource *res)
 	desc.ops = &replicator_cs_ops;
 	desc.pdata = dev->platform_data;
 	desc.dev = dev;
+	desc.cpu = -1;
 
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev)) {
diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
index e45c6c7204b4491e0f879bc7d5d445aa1d3118be..93f4b4e70eaf1590eecefa5135eeefda0394259d 100644
--- a/drivers/hwtracing/coresight/coresight-stm.c
+++ b/drivers/hwtracing/coresight/coresight-stm.c
@@ -907,6 +907,7 @@ static int __stm_probe(struct device *dev, struct resource *res)
 	desc.pdata = pdata;
 	desc.dev = dev;
 	desc.groups = coresight_stm_groups;
+	desc.cpu = -1;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev)) {
 		ret = PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c
index 88afb16bb6bec395ba535155228d176250f38625..ebfa93b9a86f3d9b90062bce41a052a63836b6c3 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-core.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-core.c
@@ -868,6 +868,7 @@ static int __tmc_probe(struct device *dev, struct resource *res)
 	}
 	dev->platform_data = pdata;
 	desc.pdata = pdata;
+	desc.cpu = -1;
 
 	coresight_clear_self_claim_tag(&desc.access);
 	drvdata->csdev = coresight_register(&desc);
diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c
index 0633f04beb240b4415cf469b3296f52e0a5b1d05..0ed6b7712feef5e606c8d0aadf594ea8be36059c 100644
--- a/drivers/hwtracing/coresight/coresight-tpda.c
+++ b/drivers/hwtracing/coresight/coresight-tpda.c
@@ -321,6 +321,7 @@ static int tpda_probe(struct amba_device *adev, const struct amba_id *id)
 	desc.pdata = adev->dev.platform_data;
 	desc.dev = &adev->dev;
 	desc.access = CSDEV_ACCESS_IOMEM(base);
+	desc.cpu = -1;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev))
 		return PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
index 7214e65097ec9ac69f6c7c9278bcd28d25945c9e..ec1e9a585f90a02f06db27d6dfb22091eb66cbd9 100644
--- a/drivers/hwtracing/coresight/coresight-tpdm.c
+++ b/drivers/hwtracing/coresight/coresight-tpdm.c
@@ -1392,6 +1392,7 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id)
 	desc.dev = &adev->dev;
 	desc.access = CSDEV_ACCESS_IOMEM(base);
 	desc.groups = tpdm_attr_grps;
+	desc.cpu = -1;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev))
 		return PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c
index 3e01592884280819c16398cbb5e09cbaee5d3efb..b83be60a156034e05df52084aebc43897ebee34c 100644
--- a/drivers/hwtracing/coresight/coresight-tpiu.c
+++ b/drivers/hwtracing/coresight/coresight-tpiu.c
@@ -177,6 +177,7 @@ static int __tpiu_probe(struct device *dev, struct resource *res)
 	desc.ops = &tpiu_cs_ops;
 	desc.pdata = pdata;
 	desc.dev = dev;
+	desc.cpu = -1;
 	drvdata->csdev = coresight_register(&desc);
 
 	if (!IS_ERR(drvdata->csdev))
diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index 8267dd1a2130d37d9507791620ea7bc8cbcd675c..28450447693147b9afd207679832ac83e2a5848a 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c
@@ -1287,6 +1287,7 @@ static void arm_trbe_register_coresight_cpu(struct trbe_drvdata *drvdata, int cp
 	desc.ops = &arm_trbe_cs_ops;
 	desc.groups = arm_trbe_groups;
 	desc.dev = dev;
+	desc.cpu = cpu;
 	trbe_csdev = coresight_register(&desc);
 	if (IS_ERR(trbe_csdev))
 		goto cpu_clear;
diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.c b/drivers/hwtracing/coresight/ultrasoc-smb.c
index 26cfc939e5bd810295a336f392ac282ccf316f9f..e5897767d9ae2c21ef39e9280dea211c110bd168 100644
--- a/drivers/hwtracing/coresight/ultrasoc-smb.c
+++ b/drivers/hwtracing/coresight/ultrasoc-smb.c
@@ -483,6 +483,7 @@ static int smb_register_sink(struct platform_device *pdev,
 		return -ENOMEM;
 	}
 	desc.access = CSDEV_ACCESS_IOMEM(drvdata->base);
+	desc.cpu = -1;
 
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev))
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 5fd3d08824e5a91a197aa01daf0fc392392f3e55..4b15c67c200624fd46a258628dbff401bd1396d7 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -153,6 +153,7 @@ struct csdev_access {
  *		in the component's sysfs sub-directory.
  * @name:	name for the coresight device, also shown under sysfs.
  * @access:	Describe access to the device
+ * @cpu:	The CPU this component is affined to (-1 for not CPU bound).
  */
 struct coresight_desc {
 	enum coresight_dev_type type;
@@ -163,6 +164,7 @@ struct coresight_desc {
 	const struct attribute_group **groups;
 	const char *name;
 	struct csdev_access access;
+	int cpu;
 };
 
 /**
@@ -261,6 +263,7 @@ struct coresight_trace_id_map {
  *		CS_MODE_SYSFS. Otherwise it must be accessed from inside the
  *		spinlock.
  * @orphan:	true if the component has connections that haven't been linked.
+ * @cpu:	The CPU this component is affined to (-1 for not CPU bound).
  * @sysfs_sink_activated: 'true' when a sink has been selected for use via sysfs
  *		by writing a 1 to the 'enable_sink' file.  A sink can be
  *		activated but not yet enabled.  Enabling for a _sink_ happens
@@ -287,6 +290,7 @@ struct coresight_device {
 	atomic_t mode;
 	int refcnt;
 	bool orphan;
+	int cpu;
 	/* sink specific fields */
 	bool sysfs_sink_activated;
 	struct dev_ext_attribute *ea;

-- 
2.34.1

Hi Leo,

kernel test robot noticed the following build errors:

[auto build test ERROR on 66701750d5565c574af42bef0b789ce0203e3071]

url:    https://github.com/intel-lab-lkp/linux/commits/Leo-Yan/coresight-Change-device-mode-to-atomic-type/20250701-230354
base:   66701750d5565c574af42bef0b789ce0203e3071
patch link:    https://lore.kernel.org/r/20250701-arm_cs_pm_fix_v3-v2-11-23ebb864fcc1%40arm.com
patch subject: [PATCH v2 11/28] coresight: Populate CPU ID into the coresight_device structure
config: arm-randconfig-004-20250702 (https://download.01.org/0day-ci/archive/20250702/202507021422.Zj4Hv0CG-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021422.Zj4Hv0CG-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507021422.Zj4Hv0CG-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hwtracing/coresight/coresight-dummy.c:182:11: error: incompatible integer to pointer conversion assigning to 'struct device *' from 'int' [-Wint-conversion]
     182 |         desc.dev = -1;
         |                  ^ ~~
   1 error generated.


vim +182 drivers/hwtracing/coresight/coresight-dummy.c

   113	
   114	static int dummy_probe(struct platform_device *pdev)
   115	{
   116		struct device *dev = &pdev->dev;
   117		struct device_node *node = dev->of_node;
   118		struct coresight_platform_data *pdata;
   119		struct dummy_drvdata *drvdata;
   120		struct coresight_desc desc = { 0 };
   121		int ret = 0, trace_id = 0;
   122	
   123		drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
   124		if (!drvdata)
   125			return -ENOMEM;
   126	
   127		if (of_device_is_compatible(node, "arm,coresight-dummy-source")) {
   128	
   129			desc.name = coresight_alloc_device_name(&source_devs, dev);
   130			if (!desc.name)
   131				return -ENOMEM;
   132	
   133			desc.type = CORESIGHT_DEV_TYPE_SOURCE;
   134			desc.subtype.source_subtype =
   135						CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS;
   136			desc.ops = &dummy_source_cs_ops;
   137			desc.groups = coresight_dummy_groups;
   138	
   139			ret = coresight_get_static_trace_id(dev, &trace_id);
   140			if (!ret) {
   141				/* Get the static id if id is set in device tree. */
   142				ret = coresight_trace_id_get_static_system_id(trace_id);
   143				if (ret < 0) {
   144					dev_err(dev, "Fail to get static id.\n");
   145					return ret;
   146				}
   147			} else {
   148				/* Get next available id if id is not set in device tree. */
   149				trace_id = coresight_trace_id_get_system_id();
   150				if (trace_id < 0) {
   151					ret = trace_id;
   152					return ret;
   153				}
   154			}
   155			drvdata->traceid = (u8)trace_id;
   156	
   157		} else if (of_device_is_compatible(node, "arm,coresight-dummy-sink")) {
   158			desc.name = coresight_alloc_device_name(&sink_devs, dev);
   159			if (!desc.name)
   160				return -ENOMEM;
   161	
   162			desc.type = CORESIGHT_DEV_TYPE_SINK;
   163			desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_DUMMY;
   164			desc.ops = &dummy_sink_cs_ops;
   165		} else {
   166			dev_err(dev, "Device type not set\n");
   167			return -EINVAL;
   168		}
   169	
   170		pdata = coresight_get_platform_data(dev);
   171		if (IS_ERR(pdata)) {
   172			ret = PTR_ERR(pdata);
   173			goto free_id;
   174		}
   175		pdev->dev.platform_data = pdata;
   176	
   177		drvdata->dev = &pdev->dev;
   178		platform_set_drvdata(pdev, drvdata);
   179	
   180		desc.pdata = pdev->dev.platform_data;
   181		desc.dev = &pdev->dev;
 > 182		desc.dev = -1;
   183		drvdata->csdev = coresight_register(&desc);
   184		if (IS_ERR(drvdata->csdev)) {
   185			ret = PTR_ERR(drvdata->csdev);
   186			goto free_id;
   187		}
   188	
   189		pm_runtime_enable(dev);
   190		dev_dbg(dev, "Dummy device initialized\n");
   191	
   192		ret = 0;
   193		goto out;
   194	
   195	free_id:
   196		if (IS_VALID_CS_TRACE_ID(drvdata->traceid))
   197			coresight_trace_id_put_system_id(drvdata->traceid);
   198	
   199	out:
   200		return ret;
   201	}
   202	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki