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modinfo 一些模組在理解參數時出現的問題

tag-icon • tag-icon drivers kernel 20.04
modinfo 一些模組在理解參數時出現的問題

範例來自

modinfo i915 | fgrep parm
force_probe:Force probe the driver for specified devices. See                               
CONFIG_DRM_I915_FORCE_PROBE for details. (charp)

（charp）是什麼意思？真/假或一些編號。還是其他東西？

grep CONFIG_DRM_I915_FORCE_PROBE /boot/config-5.4.0-47-generic 
CONFIG_DRM_I915_FORCE_PROBE=""

對我什麼也沒說。

答案1

說明可以在linux/驅動程式/gpu/drm/i915/Kconfig:

config DRM_I915_FORCE_PROBE
    string "Force probe driver for selected new Intel hardware"
    depends on DRM_I915
    help
      This is the default value for the i915.force_probe module
      parameter. Using the module parameter overrides this option.

      Force probe the driver for new Intel graphics devices that are
      recognized but not properly supported by this kernel version. It is
      recommended to upgrade to a kernel version with proper support as soon
      as it is available.

      Use "" to disable force probe. If in doubt, use this.

      Use "<pci-id>[,<pci-id>,...]" to force probe the driver for listed
      devices. For example, "4500" or "4500,4571".

      Use "*" to force probe the driver for all known devices.

顯然它是一個字串，在這種情況下我假設夏普方法字元指針。

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