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| author | Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> | 2016-04-20 19:45:03 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-04-21 10:45:12 +0300 |
| commit | 6dc3e22ee197095eb6a6b3119f04f9dc6c2bbf91 (patch) | |
| tree | 64b0516dd4d694e6d623b6fc3b9a7e2c3191cfd1 /drivers | |
| parent | 14ba00316543bb67c81202fd475b605bfa410967 (diff) | |
| download | linux-6dc3e22ee197095eb6a6b3119f04f9dc6c2bbf91.tar.xz | |
drm: Make drm.debug parameter description more helpful
Let's be user-friendly and print an actually helpful parameter
description.
This makes modinfo output the debug parameter like this:
parm: debug:Enable debug output, where each bit enables a debug category.
Bit 0 (0x01) will enable CORE messages (drm core code)
Bit 1 (0x02) will enable DRIVER messages (drm controller code)
Bit 2 (0x04) will enable KMS messages (modesetting code)
Bit 3 (0x08) will enable PRIME messages (prime code)
Bit 4 (0x10) will enable ATOMIC messages (atomic code)
Bit 5 (0x20) will enable VBL messages (vblank code) (int)
Changes from v1:
* Fixed s/PRMIE/PRIME typo.
* Add ATOMIC and VBL debug parameter documentation.
* Prefix the continuation lines with two tabs and
removed the last new line.
* Remove spurious whitespace.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461170703-11216-1-git-send-email-ezequiel@vanguardiasur.com.ar
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 2c9a2b6f7a4a..f8a7a6e66b7e 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -37,13 +37,23 @@ #include "drm_legacy.h" #include "drm_internal.h" -unsigned int drm_debug = 0; /* bitmask of DRM_UT_x */ +/* + * drm_debug: Enable debug output. + * Bitmask of DRM_UT_x. See include/drm/drmP.h for details. + */ +unsigned int drm_debug = 0; EXPORT_SYMBOL(drm_debug); MODULE_AUTHOR(CORE_AUTHOR); MODULE_DESCRIPTION(CORE_DESC); MODULE_LICENSE("GPL and additional rights"); -MODULE_PARM_DESC(debug, "Enable debug output"); +MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug category.\n" +"\t\tBit 0 (0x01) will enable CORE messages (drm core code)\n" +"\t\tBit 1 (0x02) will enable DRIVER messages (drm controller code)\n" +"\t\tBit 2 (0x04) will enable KMS messages (modesetting code)\n" +"\t\tBit 3 (0x08) will enable PRIME messages (prime code)\n" +"\t\tBit 4 (0x10) will enable ATOMIC messages (atomic code)\n" +"\t\tBit 5 (0x20) will enable VBL messages (vblank code)"); module_param_named(debug, drm_debug, int, 0600); static DEFINE_SPINLOCK(drm_minor_lock); |