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* [PATCH v4 0/2] dmaengine: qcom: gpi: Add trace event support
@ 2026-11-09  4:28 Praveen Talari
  2026-11-09  4:28 ` [PATCH v4 1/2] " Praveen Talari
  2026-11-09  4:28 ` [PATCH v4 2/2] dmaengine: qcom: gpi: Convert dev_dbg() calls to tracepoints Praveen Talari
  0 siblings, 2 replies; 5+ messages in thread
From: Praveen Talari @ 2026-11-09  4:28 UTC (permalink / raw)
  To: konrad.dybcio, Steven Rostedt, Masami Hiramatsu,
	Mathieu Desnoyers, Vinod Koul, Frank Li
  Cc: chandana.chiluveru, mukesh.savaliya, linux-kernel,
	linux-trace-kernel, linux-arm-msm, dmaengine, Praveen Talari,
	Frank Li

This series adds tracepoint support to the Qualcomm GPI DMA engine
driver, giving structured runtime visibility into GPI DMA behavior
without requiring invasive debug patches.

Patch 1 adds the qcom_gpi trace events header (private to the driver,
in drivers/dma/qcom/gpi_trace.h) and wires the tracepoints into the
driver alongside the existing dev_dbg() calls.

Patch 2 converts the remaining dev_dbg() call sites in the driver to
use the new tracepoints instead.

Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
---
Changes in v4:
- Use TO_GPI_EV_STATE_STR() in the gpi_ev_ctrl_irq tracepoint so the
  event channel state is traced by name along with its numeric value.
- Link to v3: https://patch.msgid.link/20260926-add-trace-support-gpio-v3-0-8572bf7456b2@oss.qualcomm.com

Changes in v3:
- Move the qcom_gpi trace events header from
  include/trace/events/qcom_gpi.h into drivers/dma/qcom/gpi_trace.h,
  since it has no users outside the GPI DMA driver, and squash it
  into the tracepoint-wiring patch.
- Drop the redundant per-function breakdown paragraph from the
  dev_dbg()-to-tracepoint conversion patch; the first paragraph
  already describes the change.
- Link to v2: https://patch.msgid.link/20260909-add-trace-support-gpio-v2-0-01f81739bb88@oss.qualcomm.com

Changes in v2:
- Reorder TP_STRUCT__entry() fields in gpi_ev_process, gpi_alloc_ring,
  and gpi_ring_info to avoid holes: 8/16-bit fields moved to the end,
  and 64-bit/size_t fields moved before the __string() field (treating
  __string() as 4 bytes of metadata). (Steven Rostedt)
- Link to v1: https://patch.msgid.link/20260831-add-trace-support-gpio-v1-0-7b0fd0d0ddb3@oss.qualcomm.com

---
Praveen Talari (2):
      dmaengine: qcom: gpi: Add trace event support
      dmaengine: qcom: gpi: Convert dev_dbg() calls to tracepoints

 drivers/dma/qcom/gpi.c       |  70 ++++------
 drivers/dma/qcom/gpi_trace.h | 320 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 348 insertions(+), 42 deletions(-)
---
base-commit: ddfe51b0a0f5dc9e415cc2c8ad8db17532dd426b
change-id: 20260831-add-trace-support-gpio-99eb54d42729

Best regards,
--  
Praveen Talari <praveen.talari@oss.qualcomm.com>


^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2026-11-09  4:40 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-11-09  4:28 [PATCH v4 0/2] dmaengine: qcom: gpi: Add trace event support Praveen Talari
2026-11-09  4:28 ` [PATCH v4 1/2] " Praveen Talari
2026-11-09  4:40   ` sashiko-bot
2026-11-09  4:28 ` [PATCH v4 2/2] dmaengine: qcom: gpi: Convert dev_dbg() calls to tracepoints Praveen Talari
2026-11-09  4:40   ` sashiko-bot

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