Re: [PATCH v15 04/10] Coresight: Introduce a new struct coresight_path

From: Jie Gan
Date: Tue Mar 04 2025 - 20:35:41 EST




On 3/5/2025 12:10 AM, Suzuki K Poulose wrote:
On 03/03/2025 03:29, Jie Gan wrote:
Introduce a new strcuture, 'struct coresight_path', to store the data that
utilized by the devices in the path. The coresight_path will be built/ released
by coresight_build_path/coresight_release_path functions.

Signed-off-by: Jie Gan <quic_jiegan@xxxxxxxxxxx>
---
  drivers/hwtracing/coresight/coresight-core.c  | 16 +++++-----
  .../hwtracing/coresight/coresight-etm-perf.c  | 30 ++++++++++---------
  .../hwtracing/coresight/coresight-etm-perf.h  |  2 +-
  drivers/hwtracing/coresight/coresight-priv.h  |  6 ++--
  drivers/hwtracing/coresight/coresight-sysfs.c | 12 ++++----
  include/linux/coresight.h                     | 10 +++++++
  6 files changed, 44 insertions(+), 32 deletions(-)


...

diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index ce9a5e71b261..67cf8bdbe5c0 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -329,6 +329,16 @@ static struct coresight_dev_list (var) = {                \
  #define to_coresight_device(d) container_of(d, struct coresight_device, dev)
+/**
+ * struct coresight_path - data needed by enable/disable path
+ * @path:              path from source to sink.

This doesn't match the actual variable below.

Hi Suzuki,

Very sorry for the mistake. I should spot it in advance. I will take care and enhance the self-checking process in the future.

Jie


+ * @trace_id:          trace_id of the whole path.
+ */
+struct coresight_path {
+    struct list_head    path_list;
+    u8            trace_id;
+};
+
  enum cs_mode {
      CS_MODE_DISABLED,
      CS_MODE_SYSFS,

Suzuki