diff options
Diffstat (limited to 'drivers/gpu/drm/drm_print.c')
| -rw-r--r-- | drivers/gpu/drm/drm_print.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index 52cc7b38eb12..1ade3a917c10 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -28,6 +28,7 @@ #include <stdarg.h> #include <linux/io.h> +#include <linux/moduleparam.h> #include <linux/seq_file.h> #include <linux/slab.h> @@ -35,6 +36,24 @@ #include <drm/drm_drv.h> #include <drm/drm_print.h> +/* + * drm_debug: Enable debug output. + * Bitmask of DRM_UT_x. See include/drm/drm_print.h for details. + */ +unsigned int drm_debug; +EXPORT_SYMBOL(drm_debug); + +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)\n" +"\t\tBit 7 (0x80) will enable LEASE messages (leasing code)\n" +"\t\tBit 8 (0x100) will enable DP messages (displayport code)"); +module_param_named(debug, drm_debug, int, 0600); + void __drm_puts_coredump(struct drm_printer *p, const char *str) { struct drm_print_iterator *iterator = p->arg; |