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coresight: Self-hosted tracing updates for Linux v7.2

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Updates for the CoreSight self hosted tracing subsystem includes:
  - Better power management for components based on the CPU PM, including
    support for components on the trace path for CPUs. Add support for
    save/restore for TRBE
  - Miscellaneous fixes to the drivers
    * Fix overflow when the buffer size is > 2GB for tmc-etr
    * Ultrasoc SMB Perf buffer OOB access
 
 Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
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Merge tag 'coresight-next-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next

Suzuki writes:

coresight: Self-hosted tracing updates for Linux v7.2

Updates for the CoreSight self hosted tracing subsystem includes:
 - Better power management for components based on the CPU PM, including
   support for components on the trace path for CPUs. Add support for
   save/restore for TRBE
 - Miscellaneous fixes to the drivers
   * Fix overflow when the buffer size is > 2GB for tmc-etr
   * Ultrasoc SMB Perf buffer OOB access

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>

* tag 'coresight-next-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux: (36 commits)
  coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer()
  coresight: etb10: restore atomic_t for shared reading state
  coresight: platform: defer connection counter increment until alloc succeeds
  coresight: sysfs: Validate CPU online status for per-CPU sources
  coresight: Move CPU hotplug callbacks to core layer
  coresight: sysfs: Increment refcount only for software source
  coresight: trbe: Save and restore state across CPU low power state
  coresight: Add PM callbacks for sink device
  coresight: Control path during CPU idle
  coresight: sysfs: Use source's path pointer for path control
  coresight: etm3x: Set active path on target CPU
  coresight: etm4x: Set active path on target CPU
  coresight: Save active path for system tracers
  coresight: Introduce coresight_enable_source() helper
  coresight: Use helpers to fetch first and last nodes
  coresight: Control path with range
  coresight: Disable source helpers in coresight_disable_path()
  coresight: syscfg: Use IRQ-safe spinlock to protect active variables
  coresight: etm4x: Remove redundant checks in PM save and restore
  coresight: etm4x: Hook CPU PM callbacks
  ...
This commit is contained in:
Greg Kroah-Hartman 2026-06-08 21:35:34 +02:00
commit 8b98f9f42e
18 changed files with 937 additions and 519 deletions
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