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Summary

use small lock in following files:
arch/arm/src/kinetis/kinetis_serial.c
arch/arm/src/kl/kl_serial.c
arch/arm/src/lc823450/lc823450_irq.c
arch/arm/src/lc823450/lc823450_syscontrol.c
arch/arm/src/lpc54xx/lpc54_serial.c
arch/arm/src/max326xx/max32660/max32660_dma.c
arch/arm/src/max326xx/max32660/max32660_gpio.c
arch/arm/src/max326xx/max32660/max32660_lowputc.c
arch/arm/src/max326xx/max32660/max32660_serial.c
arch/arm/src/mx8mp/mx8mp_serial.c
arch/arm/src/nrf52/nrf52_gpio.c
arch/arm/src/nrf53/nrf53_gpio.c
arch/arm/src/nrf91/nrf91_gpio.c
arch/arm/src/rp2040/rp2040_uart.c

Impact

use small lock in following files:
arch/arm/src/kinetis/kinetis_serial.c
arch/arm/src/kl/kl_serial.c
arch/arm/src/lc823450/lc823450_irq.c
arch/arm/src/lc823450/lc823450_syscontrol.c
arch/arm/src/lpc54xx/lpc54_serial.c
arch/arm/src/max326xx/max32660/max32660_dma.c
arch/arm/src/max326xx/max32660/max32660_gpio.c
arch/arm/src/max326xx/max32660/max32660_lowputc.c
arch/arm/src/max326xx/max32660/max32660_serial.c
arch/arm/src/mx8mp/mx8mp_serial.c
arch/arm/src/nrf52/nrf52_gpio.c
arch/arm/src/nrf53/nrf53_gpio.c
arch/arm/src/nrf91/nrf91_gpio.c
arch/arm/src/rp2040/rp2040_uart.c

Testing

ci

@github-actions github-actions bot added Arch: arm Issues related to ARM (32-bit) architecture Size: M The size of the change in this PR is medium labels Dec 23, 2024
@nuttxpr
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nuttxpr commented Dec 23, 2024

[Experimental Bot, please feedback here]

No, this PR description does not adequately meet the NuttX requirements. Here's why and how to fix it:

Summary:

  • Insufficient explanation: "use small lock" is vague. What kind of lock? Why is this change necessary? What problem does it solve? Is it a performance optimization, a bug fix related to deadlocks, or something else?
  • Missing context: What does "small lock" mean in the context of NuttX? Is this a specific NuttX locking mechanism?
  • No issue reference: If this addresses a reported issue, link it.

Impact:

Simply repeating the list of files is not helpful. You need to answer the specific questions:

  • New Feature? Existing Feature Change? This is likely an existing feature change (modifying locking behavior).
  • Impact on User: Likely NO, unless the locking change subtly affects timing or behavior that user applications depend on. If YES, explain how.
  • Impact on Build: Likely NO. If YES, explain how.
  • Impact on Hardware: Possibly YES. Different architectures might have different locking requirements or performance characteristics. Explain which architectures are affected and how.
  • Impact on Documentation: Maybe YES if the locking mechanisms are documented and this change alters their behavior. If YES, has the documentation been updated?
  • Impact on Security: Potentially YES. Locking changes can sometimes introduce or resolve security vulnerabilities related to race conditions. Carefully consider this.
  • Impact on Compatibility: Possibly YES. If applications rely on specific timing related to the previous locking mechanism, this could break compatibility.
  • Anything else to consider: Any potential performance improvements or regressions?

Testing:

  • Insufficient detail: "ci" is not enough. Which CI system? What specific tests were run? What platforms were tested?
  • Missing logs: Provide actual log output before and after the change, demonstrating the desired effect. Ideally, show that the problem existed before and is fixed after, or that performance has improved.

How to improve the PR description:

  1. Explain the "why": Clearly articulate the reason for this change. What problem does it solve? What are the benefits? (e.g., "Reduces lock contention in serial drivers on ARM platforms, improving performance under high load.")
  2. Define "small lock": Explain what type of lock is being used and why it's considered "small." (e.g., "Replaces irqsave/irqrestore with a lightweight spinlock to reduce overhead in interrupt handlers.")
  3. Address the impact questions thoroughly: Answer each question specifically and provide details. Don't just repeat the file list.
  4. Provide meaningful test results: Include relevant log snippets or performance metrics demonstrating the impact of the change. Be specific about the test environment (hardware, configuration, etc.).
  5. Link any related issues: If this PR addresses a reported bug or feature request, link the relevant issue.

By providing this level of detail, you make it much easier for reviewers to understand and evaluate your changes, increasing the chances of a successful and timely merge.

arch/arm/src/kinetis/kinetis_serial.c
arch/arm/src/kl/kl_serial.c
arch/arm/src/lc823450/lc823450_irq.c
arch/arm/src/lc823450/lc823450_syscontrol.c
arch/arm/src/lpc54xx/lpc54_serial.c
arch/arm/src/max326xx/max32660/max32660_dma.c
arch/arm/src/max326xx/max32660/max32660_gpio.c
arch/arm/src/max326xx/max32660/max32660_lowputc.c
arch/arm/src/max326xx/max32660/max32660_serial.c
arch/arm/src/mx8mp/mx8mp_serial.c
arch/arm/src/nrf52/nrf52_gpio.c
arch/arm/src/nrf53/nrf53_gpio.c
arch/arm/src/nrf91/nrf91_gpio.c
arch/arm/src/rp2040/rp2040_uart.c

Signed-off-by: hujun5 <hujun5@xiaomi.com>
@xiaoxiang781216 xiaoxiang781216 merged commit 50fd02c into apache:master Dec 23, 2024
25 checks passed
@hujun260 hujun260 deleted the apache_48 branch February 5, 2025 02:58
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Arch: arm Issues related to ARM (32-bit) architecture Size: M The size of the change in this PR is medium

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3 participants