[Intel-gfx] [RFC 0/2] Compile out integrated

Tvrtko Ursulin tvrtko.ursulin at linux.intel.com
Tue Feb 1 11:15:31 UTC 2022

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Quicky and dirty hack based on some old ideas. Thought maybe the approach might
interest the Arm port guys. But with IS_GEN_RANGE removed easy gains are not so
big so meh.. Maybe some more easy wins with IS_DISPLAY_VER but I haven't looked
into that side.

 3884664  449681    6720 4341065  423d49 i915.ko.tip
 3599989  429034    6688 4035711  3d947f i915.ko.noigp

Note debug kconfig so everything is inflated. Whether or not the relative gain
would change with production kconfig I am not sure.

I was a bit curious there were no build errors around functions no longer used
so either there were none (would mean patch is not really that effective), or
something changed with compiler warnings/smarts. Haven't looked into it.

Tvrtko Ursulin (2):
  igp kconfig

 drivers/gpu/drm/i915/Kconfig                  |   5 +
 drivers/gpu/drm/i915/Kconfig.platforms        |   7 +
 .../drm/i915/display/intel_ddi_buf_trans.c    |   4 +-
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c |   2 +-
 drivers/gpu/drm/i915/i915_drv.h               | 128 +++++++++++-------
 drivers/gpu/drm/i915/i915_pci.c               |  44 +++++-
 6 files changed, 134 insertions(+), 56 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/Kconfig.platforms


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