drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro
authorJim Cromie <jim.cromie@gmail.com>
Mon, 12 Sep 2022 05:28:47 +0000 (23:28 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 24 Sep 2022 13:02:01 +0000 (15:02 +0200)
commit84ec67288c10fbf136aa050d00b0fe7a89655da0
tree602caed7f1a0dcb77f029b228d0b4bf0d5226112
parente820f52577b14c63f7a15f534e17088d3c6afa6c
drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro

For CONFIG_DRM_USE_DYNAMIC_DEBUG=y, wrap __drm_dbg() & __drm_dev_dbg()
in one of dyndbg's Factory macros: _dynamic_func_call_no_desc().

This adds the callsite descriptor into the code, and an entry for each
into /proc/dynamic_debug/control.

  #> echo class DRM_UT_ATOMIC +p > /proc/dynamic_debug/control

CONFIG_DRM_USE_DYNAMIC_DEBUG=y/n is configurable because of the .data
footprint cost of per-callsite control; 56 bytes/site * ~2k for i915,
~4k callsites for amdgpu.  This is large enough that a kernel builder
might not want it.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20220912052852.1123868-5-jim.cromie@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/Kconfig
drivers/gpu/drm/Makefile
include/drm/drm_print.h