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modinfo モジュールのパラメータの理解に問題があります

tag-icon • tag-icon drivers kernel 20.04
modinfo モジュールのパラメータの理解に問題があります

例

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

(charp) はどういう意味ですか? 真偽、あるいは何らかの数字、あるいは何か他のもの?

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

私には何も言いません。

答え1

説明は以下にありますlinux/ドライバ/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.

どうやらそれは文字列なので、その場合、チャープ手段charポインタ。

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