* [PATCH v2 1/3] coresight: tmc: add the handle of the event to the path
2025-09-25 10:42 [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer Jie Gan
@ 2025-09-25 10:42 ` Jie Gan
2025-09-25 10:42 ` [PATCH v2 2/3] coresight: change helper_ops to accept coresight_path Jie Gan
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Jie Gan @ 2025-09-25 10:42 UTC (permalink / raw)
To: Suzuki K Poulose, Mike Leach, James Clark, Alexander Shishkin,
Jie Gan, Tingwei Zhang, Carl Worth
Cc: coresight, linux-arm-kernel, linux-kernel, Leo Yan
From: Carl Worth <carl@os.amperecomputing.com>
The handle is essential for retrieving the AUX_EVENT of each CPU and is
required in perf mode. It has been added to the coresight_path so that
dependent devices can access it from the path when needed.
The existing bug can be reproduced with:
perf record -e cs_etm//k -C 0-9 dd if=/dev/zero of=/dev/null
Showing an oops as follows:
Unable to handle kernel paging request at virtual address 000f6e84934ed19e
Call trace:
tmc_etr_get_buffer+0x30/0x80 [coresight_tmc] (P)
catu_enable_hw+0xbc/0x3d0 [coresight_catu]
catu_enable+0x70/0xe0 [coresight_catu]
coresight_enable_path+0xb0/0x258 [coresight]
Fixes: 080ee83cc361 ("Coresight: Change functions to accept the coresight_path")
Signed-off-by: Carl Worth <carl@os.amperecomputing.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Co-developed-by: Jie Gan <jie.gan@oss.qualcomm.com>
Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
---
drivers/hwtracing/coresight/coresight-etm-perf.c | 1 +
drivers/hwtracing/coresight/coresight-tmc-etr.c | 3 ++-
include/linux/coresight.h | 10 ++++++----
3 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c
index f677c08233ba..5c256af6e54a 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
@@ -520,6 +520,7 @@ static void etm_event_start(struct perf_event *event, int flags)
goto out;
path = etm_event_cpu_path(event_data, cpu);
+ path->handle = handle;
/* We need a sink, no need to continue without one */
sink = coresight_get_sink(path);
if (WARN_ON_ONCE(!sink))
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c
index b07fcdb3fe1a..1040f73f0537 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etr.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c
@@ -1327,7 +1327,8 @@ static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev)
struct etr_buf *tmc_etr_get_buffer(struct coresight_device *csdev,
enum cs_mode mode, void *data)
{
- struct perf_output_handle *handle = data;
+ struct coresight_path *path = data;
+ struct perf_output_handle *handle = path->handle;
struct etr_perf_buffer *etr_perf;
switch (mode) {
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 6de59ce8ef8c..2626105e3719 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -332,12 +332,14 @@ static struct coresight_dev_list (var) = { \
/**
* struct coresight_path - data needed by enable/disable path
- * @path_list: path from source to sink.
- * @trace_id: trace_id of the whole path.
+ * @path_list: path from source to sink.
+ * @trace_id: trace_id of the whole path.
+ * @handle: handle of the aux_event.
*/
struct coresight_path {
- struct list_head path_list;
- u8 trace_id;
+ struct list_head path_list;
+ u8 trace_id;
+ struct perf_output_handle *handle;
};
enum cs_mode {
--
2.34.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v2 2/3] coresight: change helper_ops to accept coresight_path
2025-09-25 10:42 [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer Jie Gan
2025-09-25 10:42 ` [PATCH v2 1/3] coresight: tmc: add the handle of the event to the path Jie Gan
@ 2025-09-25 10:42 ` Jie Gan
2025-09-25 10:42 ` [PATCH v2 3/3] coresight: change the sink_ops " Jie Gan
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Jie Gan @ 2025-09-25 10:42 UTC (permalink / raw)
To: Suzuki K Poulose, Mike Leach, James Clark, Alexander Shishkin,
Jie Gan, Tingwei Zhang, Carl Worth
Cc: coresight, linux-arm-kernel, linux-kernel, Leo Yan
Update the helper_enable and helper_disable functions to accept
coresight_path instead of a generic void *data, as coresight_path
encapsulates all the necessary data required by devices along the path.
Tested-by: Carl Worth <carl@os.amperecomputing.com>
Reviewed-by: Carl Worth <carl@os.amperecomputing.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
---
drivers/hwtracing/coresight/coresight-catu.c | 10 +++++-----
drivers/hwtracing/coresight/coresight-core.c | 20 ++++++++++++--------
drivers/hwtracing/coresight/coresight-ctcu-core.c | 9 +++------
drivers/hwtracing/coresight/coresight-cti-core.c | 5 +++--
drivers/hwtracing/coresight/coresight-cti.h | 5 +++--
drivers/hwtracing/coresight/coresight-tmc-etr.c | 4 ++--
drivers/hwtracing/coresight/coresight-tmc.h | 3 ++-
include/linux/coresight.h | 5 +++--
8 files changed, 33 insertions(+), 28 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c
index a3ccb7034ae1..69b36bae97ab 100644
--- a/drivers/hwtracing/coresight/coresight-catu.c
+++ b/drivers/hwtracing/coresight/coresight-catu.c
@@ -397,7 +397,7 @@ static int catu_wait_for_ready(struct catu_drvdata *drvdata)
}
static int catu_enable_hw(struct catu_drvdata *drvdata, enum cs_mode cs_mode,
- void *data)
+ struct coresight_path *path)
{
int rc;
u32 control, mode;
@@ -425,7 +425,7 @@ static int catu_enable_hw(struct catu_drvdata *drvdata, enum cs_mode cs_mode,
etrdev = coresight_find_input_type(
csdev->pdata, CORESIGHT_DEV_TYPE_SINK, etr_subtype);
if (etrdev) {
- etr_buf = tmc_etr_get_buffer(etrdev, cs_mode, data);
+ etr_buf = tmc_etr_get_buffer(etrdev, cs_mode, path);
if (IS_ERR(etr_buf))
return PTR_ERR(etr_buf);
}
@@ -455,7 +455,7 @@ static int catu_enable_hw(struct catu_drvdata *drvdata, enum cs_mode cs_mode,
}
static int catu_enable(struct coresight_device *csdev, enum cs_mode mode,
- void *data)
+ struct coresight_path *path)
{
int rc = 0;
struct catu_drvdata *catu_drvdata = csdev_to_catu_drvdata(csdev);
@@ -463,7 +463,7 @@ static int catu_enable(struct coresight_device *csdev, enum cs_mode mode,
guard(raw_spinlock_irqsave)(&catu_drvdata->spinlock);
if (csdev->refcnt == 0) {
CS_UNLOCK(catu_drvdata->base);
- rc = catu_enable_hw(catu_drvdata, mode, data);
+ rc = catu_enable_hw(catu_drvdata, mode, path);
CS_LOCK(catu_drvdata->base);
}
if (!rc)
@@ -488,7 +488,7 @@ static int catu_disable_hw(struct catu_drvdata *drvdata)
return rc;
}
-static int catu_disable(struct coresight_device *csdev, void *__unused)
+static int catu_disable(struct coresight_device *csdev, struct coresight_path *path)
{
int rc = 0;
struct catu_drvdata *catu_drvdata = csdev_to_catu_drvdata(csdev);
diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index 3267192f0c1c..f44ec9e5b692 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -355,17 +355,20 @@ static bool coresight_is_helper(struct coresight_device *csdev)
}
static int coresight_enable_helper(struct coresight_device *csdev,
- enum cs_mode mode, void *data)
+ enum cs_mode mode,
+ struct coresight_path *path)
{
- return helper_ops(csdev)->enable(csdev, mode, data);
+ return helper_ops(csdev)->enable(csdev, mode, path);
}
-static void coresight_disable_helper(struct coresight_device *csdev, void *data)
+static void coresight_disable_helper(struct coresight_device *csdev,
+ struct coresight_path *path)
{
- helper_ops(csdev)->disable(csdev, data);
+ helper_ops(csdev)->disable(csdev, path);
}
-static void coresight_disable_helpers(struct coresight_device *csdev, void *data)
+static void coresight_disable_helpers(struct coresight_device *csdev,
+ struct coresight_path *path)
{
int i;
struct coresight_device *helper;
@@ -373,7 +376,7 @@ static void coresight_disable_helpers(struct coresight_device *csdev, void *data
for (i = 0; i < csdev->pdata->nr_outconns; ++i) {
helper = csdev->pdata->out_conns[i]->dest_dev;
if (helper && coresight_is_helper(helper))
- coresight_disable_helper(helper, data);
+ coresight_disable_helper(helper, path);
}
}
@@ -479,7 +482,8 @@ void coresight_disable_path(struct coresight_path *path)
EXPORT_SYMBOL_GPL(coresight_disable_path);
static int coresight_enable_helpers(struct coresight_device *csdev,
- enum cs_mode mode, void *data)
+ enum cs_mode mode,
+ struct coresight_path *path)
{
int i, ret = 0;
struct coresight_device *helper;
@@ -489,7 +493,7 @@ static int coresight_enable_helpers(struct coresight_device *csdev,
if (!helper || !coresight_is_helper(helper))
continue;
- ret = coresight_enable_helper(helper, mode, data);
+ ret = coresight_enable_helper(helper, mode, path);
if (ret)
return ret;
}
diff --git a/drivers/hwtracing/coresight/coresight-ctcu-core.c b/drivers/hwtracing/coresight/coresight-ctcu-core.c
index c586495e9a08..abed15eb72b4 100644
--- a/drivers/hwtracing/coresight/coresight-ctcu-core.c
+++ b/drivers/hwtracing/coresight/coresight-ctcu-core.c
@@ -156,17 +156,14 @@ static int ctcu_set_etr_traceid(struct coresight_device *csdev, struct coresight
return __ctcu_set_etr_traceid(csdev, traceid, port_num, enable);
}
-static int ctcu_enable(struct coresight_device *csdev, enum cs_mode mode, void *data)
+static int ctcu_enable(struct coresight_device *csdev, enum cs_mode mode,
+ struct coresight_path *path)
{
- struct coresight_path *path = (struct coresight_path *)data;
-
return ctcu_set_etr_traceid(csdev, path, true);
}
-static int ctcu_disable(struct coresight_device *csdev, void *data)
+static int ctcu_disable(struct coresight_device *csdev, struct coresight_path *path)
{
- struct coresight_path *path = (struct coresight_path *)data;
-
return ctcu_set_etr_traceid(csdev, path, false);
}
diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c
index 8fb30dd73fd2..bfbc365bb2ef 100644
--- a/drivers/hwtracing/coresight/coresight-cti-core.c
+++ b/drivers/hwtracing/coresight/coresight-cti-core.c
@@ -799,14 +799,15 @@ static void cti_pm_release(struct cti_drvdata *drvdata)
}
/** cti ect operations **/
-int cti_enable(struct coresight_device *csdev, enum cs_mode mode, void *data)
+int cti_enable(struct coresight_device *csdev, enum cs_mode mode,
+ struct coresight_path *path)
{
struct cti_drvdata *drvdata = csdev_to_cti_drvdata(csdev);
return cti_enable_hw(drvdata);
}
-int cti_disable(struct coresight_device *csdev, void *data)
+int cti_disable(struct coresight_device *csdev, struct coresight_path *path)
{
struct cti_drvdata *drvdata = csdev_to_cti_drvdata(csdev);
diff --git a/drivers/hwtracing/coresight/coresight-cti.h b/drivers/hwtracing/coresight/coresight-cti.h
index 8362a47c939c..4f89091ee93f 100644
--- a/drivers/hwtracing/coresight/coresight-cti.h
+++ b/drivers/hwtracing/coresight/coresight-cti.h
@@ -216,8 +216,9 @@ int cti_add_connection_entry(struct device *dev, struct cti_drvdata *drvdata,
const char *assoc_dev_name);
struct cti_trig_con *cti_allocate_trig_con(struct device *dev, int in_sigs,
int out_sigs);
-int cti_enable(struct coresight_device *csdev, enum cs_mode mode, void *data);
-int cti_disable(struct coresight_device *csdev, void *data);
+int cti_enable(struct coresight_device *csdev, enum cs_mode mode,
+ struct coresight_path *path);
+int cti_disable(struct coresight_device *csdev, struct coresight_path *path);
void cti_write_all_hw_regs(struct cti_drvdata *drvdata);
void cti_write_intack(struct device *dev, u32 ackval);
void cti_write_single_reg(struct cti_drvdata *drvdata, int offset, u32 value);
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c
index 1040f73f0537..b9bdbc745433 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etr.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c
@@ -1325,9 +1325,9 @@ static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev)
}
struct etr_buf *tmc_etr_get_buffer(struct coresight_device *csdev,
- enum cs_mode mode, void *data)
+ enum cs_mode mode,
+ struct coresight_path *path)
{
- struct coresight_path *path = data;
struct perf_output_handle *handle = path->handle;
struct etr_perf_buffer *etr_perf;
diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h
index cbb4ba439158..95473d131032 100644
--- a/drivers/hwtracing/coresight/coresight-tmc.h
+++ b/drivers/hwtracing/coresight/coresight-tmc.h
@@ -442,7 +442,8 @@ struct coresight_device *tmc_etr_get_catu_device(struct tmc_drvdata *drvdata);
void tmc_etr_set_catu_ops(const struct etr_buf_operations *catu);
void tmc_etr_remove_catu_ops(void);
struct etr_buf *tmc_etr_get_buffer(struct coresight_device *csdev,
- enum cs_mode mode, void *data);
+ enum cs_mode mode,
+ struct coresight_path *path);
extern const struct attribute_group coresight_etr_group;
#endif
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 2626105e3719..2bee2e3bb1c6 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -424,8 +424,9 @@ struct coresight_ops_source {
*/
struct coresight_ops_helper {
int (*enable)(struct coresight_device *csdev, enum cs_mode mode,
- void *data);
- int (*disable)(struct coresight_device *csdev, void *data);
+ struct coresight_path *path);
+ int (*disable)(struct coresight_device *csdev,
+ struct coresight_path *path);
};
--
2.34.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v2 3/3] coresight: change the sink_ops to accept coresight_path
2025-09-25 10:42 [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer Jie Gan
2025-09-25 10:42 ` [PATCH v2 1/3] coresight: tmc: add the handle of the event to the path Jie Gan
2025-09-25 10:42 ` [PATCH v2 2/3] coresight: change helper_ops to accept coresight_path Jie Gan
@ 2025-09-25 10:42 ` Jie Gan
2025-11-10 0:58 ` [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer Jie Gan
2025-11-10 10:16 ` Suzuki K Poulose
4 siblings, 0 replies; 6+ messages in thread
From: Jie Gan @ 2025-09-25 10:42 UTC (permalink / raw)
To: Suzuki K Poulose, Mike Leach, James Clark, Alexander Shishkin,
Jie Gan, Tingwei Zhang, Carl Worth
Cc: coresight, linux-arm-kernel, linux-kernel, Leo Yan
Update the sink_enable functions to accept coresight_path instead of
a generic void *data, as coresight_path encapsulates all the necessary
data required by devices along the path.
Tested-by: Carl Worth <carl@os.amperecomputing.com>
Reviewed-by: Carl Worth <carl@os.amperecomputing.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
---
drivers/hwtracing/coresight/coresight-core.c | 10 +++++-----
drivers/hwtracing/coresight/coresight-dummy.c | 2 +-
drivers/hwtracing/coresight/coresight-etb10.c | 8 ++++----
drivers/hwtracing/coresight/coresight-etm-perf.c | 2 +-
drivers/hwtracing/coresight/coresight-priv.h | 3 +--
drivers/hwtracing/coresight/coresight-sysfs.c | 2 +-
drivers/hwtracing/coresight/coresight-tmc-etf.c | 10 ++++++----
drivers/hwtracing/coresight/coresight-tmc-etr.c | 10 ++++++----
drivers/hwtracing/coresight/coresight-tpiu.c | 2 +-
drivers/hwtracing/coresight/coresight-trbe.c | 4 ++--
drivers/hwtracing/coresight/ultrasoc-smb.c | 9 +++++----
include/linux/coresight.h | 2 +-
12 files changed, 34 insertions(+), 30 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index f44ec9e5b692..c660cf8adb1c 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -300,9 +300,10 @@ void coresight_add_helper(struct coresight_device *csdev,
EXPORT_SYMBOL_GPL(coresight_add_helper);
static int coresight_enable_sink(struct coresight_device *csdev,
- enum cs_mode mode, void *data)
+ enum cs_mode mode,
+ struct coresight_path *path)
{
- return sink_ops(csdev)->enable(csdev, mode, data);
+ return sink_ops(csdev)->enable(csdev, mode, path);
}
static void coresight_disable_sink(struct coresight_device *csdev)
@@ -501,8 +502,7 @@ static int coresight_enable_helpers(struct coresight_device *csdev,
return 0;
}
-int coresight_enable_path(struct coresight_path *path, enum cs_mode mode,
- void *sink_data)
+int coresight_enable_path(struct coresight_path *path, enum cs_mode mode)
{
int ret = 0;
u32 type;
@@ -532,7 +532,7 @@ int coresight_enable_path(struct coresight_path *path, enum cs_mode mode,
switch (type) {
case CORESIGHT_DEV_TYPE_SINK:
- ret = coresight_enable_sink(csdev, mode, sink_data);
+ ret = coresight_enable_sink(csdev, mode, path);
/*
* Sink is the first component turned on. If we
* failed to enable the sink, there are no components
diff --git a/drivers/hwtracing/coresight/coresight-dummy.c b/drivers/hwtracing/coresight/coresight-dummy.c
index aaa92b5081e3..14322c99e29d 100644
--- a/drivers/hwtracing/coresight/coresight-dummy.c
+++ b/drivers/hwtracing/coresight/coresight-dummy.c
@@ -52,7 +52,7 @@ static int dummy_source_trace_id(struct coresight_device *csdev, __maybe_unused
}
static int dummy_sink_enable(struct coresight_device *csdev, enum cs_mode mode,
- void *data)
+ struct coresight_path *path)
{
dev_dbg(csdev->dev.parent, "Dummy sink enabled\n");
diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c
index 35db1b6093d1..6657602d8f2e 100644
--- a/drivers/hwtracing/coresight/coresight-etb10.c
+++ b/drivers/hwtracing/coresight/coresight-etb10.c
@@ -167,13 +167,13 @@ static int etb_enable_sysfs(struct coresight_device *csdev)
return ret;
}
-static int etb_enable_perf(struct coresight_device *csdev, void *data)
+static int etb_enable_perf(struct coresight_device *csdev, struct coresight_path *path)
{
int ret = 0;
pid_t pid;
unsigned long flags;
struct etb_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- struct perf_output_handle *handle = data;
+ struct perf_output_handle *handle = path->handle;
struct cs_buffers *buf = etm_perf_sink_config(handle);
raw_spin_lock_irqsave(&drvdata->spinlock, flags);
@@ -224,7 +224,7 @@ static int etb_enable_perf(struct coresight_device *csdev, void *data)
}
static int etb_enable(struct coresight_device *csdev, enum cs_mode mode,
- void *data)
+ struct coresight_path *path)
{
int ret;
@@ -233,7 +233,7 @@ static int etb_enable(struct coresight_device *csdev, enum cs_mode mode,
ret = etb_enable_sysfs(csdev);
break;
case CS_MODE_PERF:
- ret = etb_enable_perf(csdev, data);
+ ret = etb_enable_perf(csdev, path);
break;
default:
ret = -EINVAL;
diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c
index 5c256af6e54a..17afa0f4cdee 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
@@ -527,7 +527,7 @@ static void etm_event_start(struct perf_event *event, int flags)
goto fail_end_stop;
/* Nothing will happen without a path */
- if (coresight_enable_path(path, CS_MODE_PERF, handle))
+ if (coresight_enable_path(path, CS_MODE_PERF))
goto fail_end_stop;
/* Finally enable the tracer */
diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h
index 33e22b1ba043..fd896ac07942 100644
--- a/drivers/hwtracing/coresight/coresight-priv.h
+++ b/drivers/hwtracing/coresight/coresight-priv.h
@@ -135,8 +135,7 @@ static inline void CS_UNLOCK(void __iomem *addr)
}
void coresight_disable_path(struct coresight_path *path);
-int coresight_enable_path(struct coresight_path *path, enum cs_mode mode,
- void *sink_data);
+int coresight_enable_path(struct coresight_path *path, enum cs_mode mode);
struct coresight_device *coresight_get_sink(struct coresight_path *path);
struct coresight_device *coresight_get_sink_by_id(u32 id);
struct coresight_device *
diff --git a/drivers/hwtracing/coresight/coresight-sysfs.c b/drivers/hwtracing/coresight/coresight-sysfs.c
index 5e52324aa9ac..d2a6ed8bcc74 100644
--- a/drivers/hwtracing/coresight/coresight-sysfs.c
+++ b/drivers/hwtracing/coresight/coresight-sysfs.c
@@ -215,7 +215,7 @@ int coresight_enable_sysfs(struct coresight_device *csdev)
if (!IS_VALID_CS_TRACE_ID(path->trace_id))
goto err_path;
- ret = coresight_enable_path(path, CS_MODE_SYSFS, NULL);
+ ret = coresight_enable_path(path, CS_MODE_SYSFS);
if (ret)
goto err_path;
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c
index 0f45ab5e5249..8882b1c4cdc0 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etf.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c
@@ -246,13 +246,14 @@ static int tmc_enable_etf_sink_sysfs(struct coresight_device *csdev)
return ret;
}
-static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data)
+static int tmc_enable_etf_sink_perf(struct coresight_device *csdev,
+ struct coresight_path *path)
{
int ret = 0;
pid_t pid;
unsigned long flags;
struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- struct perf_output_handle *handle = data;
+ struct perf_output_handle *handle = path->handle;
struct cs_buffers *buf = etm_perf_sink_config(handle);
raw_spin_lock_irqsave(&drvdata->spinlock, flags);
@@ -304,7 +305,8 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data)
}
static int tmc_enable_etf_sink(struct coresight_device *csdev,
- enum cs_mode mode, void *data)
+ enum cs_mode mode,
+ struct coresight_path *path)
{
int ret;
@@ -313,7 +315,7 @@ static int tmc_enable_etf_sink(struct coresight_device *csdev,
ret = tmc_enable_etf_sink_sysfs(csdev);
break;
case CS_MODE_PERF:
- ret = tmc_enable_etf_sink_perf(csdev, data);
+ ret = tmc_enable_etf_sink_perf(csdev, path);
break;
/* We shouldn't be here */
default:
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c
index b9bdbc745433..bf08f6117a7f 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etr.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c
@@ -1726,13 +1726,14 @@ tmc_update_etr_buffer(struct coresight_device *csdev,
return size;
}
-static int tmc_enable_etr_sink_perf(struct coresight_device *csdev, void *data)
+static int tmc_enable_etr_sink_perf(struct coresight_device *csdev,
+ struct coresight_path *path)
{
int rc = 0;
pid_t pid;
unsigned long flags;
struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- struct perf_output_handle *handle = data;
+ struct perf_output_handle *handle = path->handle;
struct etr_perf_buffer *etr_perf = etm_perf_sink_config(handle);
raw_spin_lock_irqsave(&drvdata->spinlock, flags);
@@ -1780,13 +1781,14 @@ static int tmc_enable_etr_sink_perf(struct coresight_device *csdev, void *data)
}
static int tmc_enable_etr_sink(struct coresight_device *csdev,
- enum cs_mode mode, void *data)
+ enum cs_mode mode,
+ struct coresight_path *path)
{
switch (mode) {
case CS_MODE_SYSFS:
return tmc_enable_etr_sink_sysfs(csdev);
case CS_MODE_PERF:
- return tmc_enable_etr_sink_perf(csdev, data);
+ return tmc_enable_etr_sink_perf(csdev, path);
default:
return -EINVAL;
}
diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c
index 9463afdbda8a..aaa44bc521c3 100644
--- a/drivers/hwtracing/coresight/coresight-tpiu.c
+++ b/drivers/hwtracing/coresight/coresight-tpiu.c
@@ -75,7 +75,7 @@ static void tpiu_enable_hw(struct csdev_access *csa)
}
static int tpiu_enable(struct coresight_device *csdev, enum cs_mode mode,
- void *__unused)
+ struct coresight_path *path)
{
struct tpiu_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index 43643d2c5bdd..293715b4ff0e 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c
@@ -1013,11 +1013,11 @@ static int __arm_trbe_enable(struct trbe_buf *buf,
}
static int arm_trbe_enable(struct coresight_device *csdev, enum cs_mode mode,
- void *data)
+ struct coresight_path *path)
{
struct trbe_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
struct trbe_cpudata *cpudata = dev_get_drvdata(&csdev->dev);
- struct perf_output_handle *handle = data;
+ struct perf_output_handle *handle = path->handle;
struct trbe_buf *buf = etm_perf_sink_config(handle);
WARN_ON(cpudata->cpu != smp_processor_id());
diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.c b/drivers/hwtracing/coresight/ultrasoc-smb.c
index 26cfc939e5bd..8f7922a5e534 100644
--- a/drivers/hwtracing/coresight/ultrasoc-smb.c
+++ b/drivers/hwtracing/coresight/ultrasoc-smb.c
@@ -213,10 +213,11 @@ static void smb_enable_sysfs(struct coresight_device *csdev)
coresight_set_mode(csdev, CS_MODE_SYSFS);
}
-static int smb_enable_perf(struct coresight_device *csdev, void *data)
+static int smb_enable_perf(struct coresight_device *csdev,
+ struct coresight_path *path)
{
struct smb_drv_data *drvdata = dev_get_drvdata(csdev->dev.parent);
- struct perf_output_handle *handle = data;
+ struct perf_output_handle *handle = path->handle;
struct cs_buffers *buf = etm_perf_sink_config(handle);
pid_t pid;
@@ -240,7 +241,7 @@ static int smb_enable_perf(struct coresight_device *csdev, void *data)
}
static int smb_enable(struct coresight_device *csdev, enum cs_mode mode,
- void *data)
+ struct coresight_path *path)
{
struct smb_drv_data *drvdata = dev_get_drvdata(csdev->dev.parent);
int ret = 0;
@@ -261,7 +262,7 @@ static int smb_enable(struct coresight_device *csdev, enum cs_mode mode,
smb_enable_sysfs(csdev);
break;
case CS_MODE_PERF:
- ret = smb_enable_perf(csdev, data);
+ ret = smb_enable_perf(csdev, path);
break;
default:
ret = -EINVAL;
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 2bee2e3bb1c6..56d0108658db 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -367,7 +367,7 @@ enum cs_mode {
*/
struct coresight_ops_sink {
int (*enable)(struct coresight_device *csdev, enum cs_mode mode,
- void *data);
+ struct coresight_path *path);
int (*disable)(struct coresight_device *csdev);
void *(*alloc_buffer)(struct coresight_device *csdev,
struct perf_event *event, void **pages,
--
2.34.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer
2025-09-25 10:42 [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer Jie Gan
` (2 preceding siblings ...)
2025-09-25 10:42 ` [PATCH v2 3/3] coresight: change the sink_ops " Jie Gan
@ 2025-11-10 0:58 ` Jie Gan
2025-11-10 10:16 ` Suzuki K Poulose
4 siblings, 0 replies; 6+ messages in thread
From: Jie Gan @ 2025-11-10 0:58 UTC (permalink / raw)
To: Suzuki K Poulose, Mike Leach, James Clark, Alexander Shishkin,
Tingwei Zhang, Carl Worth
Cc: coresight, linux-arm-kernel, linux-kernel, Leo Yan
On 9/25/2025 6:42 PM, Jie Gan wrote:
> Patch 1:
> Fix the issue that the catu cannot correctly read the handle of the AUX
> event which is caused by the commit[1].
>
> [1] 080ee83cc361 ("Coresight: Change functions to accept the coresight_path")
>
Gentle reminder.
> Exeception call trace:
> tmc_etr_get_buffer+0x30/0x80 [coresight_tmc] (P)
> catu_enable_hw+0xbc/0x3d0 [coresight_catu]
> catu_enable+0x70/0xe0 [coresight_catu]
> coresight_enable_path+0xb0/0x258 [coresight]
>
> Patch 2 - 3:
> Change the sink_enable and help_enable/disable to accept coresight_path.
>
> Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
> ---
> Changes in v2:
> - Fix error comment in coresight_path
> - Collect tags
> - Link to RFC: https://lore.kernel.org/r/20250922-fix_helper_data-v1-0-905e8115a24e@oss.qualcomm.com
>
> Versions have submitted by Carl Worth:
> V2 - https://lore.kernel.org/all/20250919174932.3490404-1-carl@os.amperecomputing.com/
> V1 - https://lore.kernel.org/all/20250916224441.3008824-1-carl@os.amperecomputing.com/
>
> ---
> Carl Worth (1):
> coresight: tmc: add the handle of the event to the path
>
> Jie Gan (2):
> coresight: change helper_ops to accept coresight_path
> coresight: change the sink_ops to accept coresight_path
>
> drivers/hwtracing/coresight/coresight-catu.c | 10 ++++----
> drivers/hwtracing/coresight/coresight-core.c | 30 +++++++++++++----------
> drivers/hwtracing/coresight/coresight-ctcu-core.c | 9 +++----
> drivers/hwtracing/coresight/coresight-cti-core.c | 5 ++--
> drivers/hwtracing/coresight/coresight-cti.h | 5 ++--
> drivers/hwtracing/coresight/coresight-dummy.c | 2 +-
> drivers/hwtracing/coresight/coresight-etb10.c | 8 +++---
> drivers/hwtracing/coresight/coresight-etm-perf.c | 3 ++-
> drivers/hwtracing/coresight/coresight-priv.h | 3 +--
> drivers/hwtracing/coresight/coresight-sysfs.c | 2 +-
> drivers/hwtracing/coresight/coresight-tmc-etf.c | 10 +++++---
> drivers/hwtracing/coresight/coresight-tmc-etr.c | 15 +++++++-----
> drivers/hwtracing/coresight/coresight-tmc.h | 3 ++-
> drivers/hwtracing/coresight/coresight-tpiu.c | 2 +-
> drivers/hwtracing/coresight/coresight-trbe.c | 4 +--
> drivers/hwtracing/coresight/ultrasoc-smb.c | 9 ++++---
> include/linux/coresight.h | 17 +++++++------
> 17 files changed, 75 insertions(+), 62 deletions(-)
> ---
> base-commit: 846bd2225ec3cfa8be046655e02b9457ed41973e
> change-id: 20250922-fix_helper_data-f56018fc966f
>
> Best regards,
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer
2025-09-25 10:42 [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer Jie Gan
` (3 preceding siblings ...)
2025-11-10 0:58 ` [PATCH v2 0/3] coresight: replace the void pointer with coresight_path pointer Jie Gan
@ 2025-11-10 10:16 ` Suzuki K Poulose
4 siblings, 0 replies; 6+ messages in thread
From: Suzuki K Poulose @ 2025-11-10 10:16 UTC (permalink / raw)
To: Mike Leach, James Clark, Alexander Shishkin, Tingwei Zhang,
Carl Worth, Jie Gan
Cc: Suzuki K Poulose, coresight, linux-arm-kernel, linux-kernel,
Leo Yan
On Thu, 25 Sep 2025 18:42:30 +0800, Jie Gan wrote:
> Patch 1:
> Fix the issue that the catu cannot correctly read the handle of the AUX
> event which is caused by the commit[1].
>
> [1] 080ee83cc361 ("Coresight: Change functions to accept the coresight_path")
>
> Exeception call trace:
> tmc_etr_get_buffer+0x30/0x80 [coresight_tmc] (P)
> catu_enable_hw+0xbc/0x3d0 [coresight_catu]
> catu_enable+0x70/0xe0 [coresight_catu]
> coresight_enable_path+0xb0/0x258 [coresight]
>
> [...]
Applied, thanks!
[1/3] coresight: tmc: add the handle of the event to the path
https://git.kernel.org/coresight/c/aaa5abcc9d44
[2/3] coresight: change helper_ops to accept coresight_path
https://git.kernel.org/coresight/c/94baedb51dea
[3/3] coresight: change the sink_ops to accept coresight_path
https://git.kernel.org/coresight/c/b139702a8896
Best regards,
--
Suzuki K Poulose <suzuki.poulose@arm.com>
^ permalink raw reply [flat|nested] 6+ messages in thread