From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> For Joonas basically. :) Rough goal - add Kconfig options to turn off supported platforms and count on compiler DCE to make the driver smaller. Tested as so much that it boots and renders on Skylake with all platforms/gens older than Gen8 turned off. text data bss dec hex filename 1502847 54223 2888 1559958 17cd96 i915.ko.original 1375647 51939 2888 1430474 15d3ca i915.ko.gen8+ So only ~124kiB saving. Or ~8.5%. Perhaps once GCC LTO support lands it would be better than this? Starts with smaller patches to show the idea step by step on Gen2, then proceeds in larger chunks, to finish with some invasive Coccinelle works to enable the last few kilo-bytes of savings. Let the flames begin! :) Tvrtko Ursulin (15): drm/i915: Make I830 platform support optional drm/i915: Make I845G platform support optional drm/i915: Make I85X platform support optional drm/i915: Make I865G platform support optional drm/i915: Make GEN2 support optional drm/i915: Make Gen3 platforms support optional drm/i915: Make Gen4 platforms support optional drm/i915: Make Ironlake/Gen5 platforms support optional drm/i915: Make Sandybridge/Gen6 platforms support optional drm/i915: Make Gen7/7.5 platform support optional drm/i915: Use INTEL_GEN everywhere drm/i915: Favour IS_GENx drm/i915: IS_GEN range helpers drm/i915: Use new IS_GEN range helpers drm/i915: Replace some negative Gen checks drivers/gpu/drm/i915/Kconfig | 5 + drivers/gpu/drm/i915/Kconfig.platforms | 169 ++++++++++++++++++ drivers/gpu/drm/i915/i915_debugfs.c | 86 ++++----- drivers/gpu/drm/i915/i915_drv.c | 16 +- drivers/gpu/drm/i915/i915_drv.h | 133 ++++++++++---- drivers/gpu/drm/i915/i915_gem.c | 18 +- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 +- drivers/gpu/drm/i915/i915_gem_fence_reg.c | 4 +- drivers/gpu/drm/i915/i915_gem_gtt.c | 30 ++-- drivers/gpu/drm/i915/i915_gem_request.c | 2 +- drivers/gpu/drm/i915/i915_gem_stolen.c | 8 +- drivers/gpu/drm/i915/i915_gem_tiling.c | 8 +- drivers/gpu/drm/i915/i915_gpu_error.c | 40 ++--- drivers/gpu/drm/i915/i915_irq.c | 58 +++--- drivers/gpu/drm/i915/i915_pci.c | 84 ++++++++- drivers/gpu/drm/i915/i915_perf.c | 2 +- drivers/gpu/drm/i915/i915_pmu.c | 6 +- drivers/gpu/drm/i915/i915_reg.h | 4 +- drivers/gpu/drm/i915/i915_suspend.c | 12 +- drivers/gpu/drm/i915/i915_sysfs.c | 2 +- drivers/gpu/drm/i915/intel_atomic_plane.c | 2 +- drivers/gpu/drm/i915/intel_audio.c | 2 +- drivers/gpu/drm/i915/intel_bios.c | 2 +- drivers/gpu/drm/i915/intel_cdclk.c | 8 +- drivers/gpu/drm/i915/intel_color.c | 2 +- drivers/gpu/drm/i915/intel_crt.c | 6 +- drivers/gpu/drm/i915/intel_ddi.c | 10 +- drivers/gpu/drm/i915/intel_device_info.c | 18 +- drivers/gpu/drm/i915/intel_display.c | 194 ++++++++++----------- drivers/gpu/drm/i915/intel_dp.c | 28 +-- drivers/gpu/drm/i915/intel_dpll_mgr.c | 4 +- drivers/gpu/drm/i915/intel_engine_cs.c | 22 +-- drivers/gpu/drm/i915/intel_fbc.c | 32 ++-- drivers/gpu/drm/i915/intel_fifo_underrun.c | 2 +- drivers/gpu/drm/i915/intel_hangcheck.c | 2 +- drivers/gpu/drm/i915/intel_hdcp.c | 2 +- drivers/gpu/drm/i915/intel_hdmi.c | 10 +- drivers/gpu/drm/i915/intel_lrc.c | 6 +- drivers/gpu/drm/i915/intel_lvds.c | 10 +- drivers/gpu/drm/i915/intel_mocs.c | 2 +- drivers/gpu/drm/i915/intel_overlay.c | 2 +- drivers/gpu/drm/i915/intel_panel.c | 10 +- drivers/gpu/drm/i915/intel_pipe_crc.c | 2 +- drivers/gpu/drm/i915/intel_pm.c | 106 +++++------ drivers/gpu/drm/i915/intel_psr.c | 6 +- drivers/gpu/drm/i915/intel_ringbuffer.c | 34 ++-- drivers/gpu/drm/i915/intel_ringbuffer.h | 4 +- drivers/gpu/drm/i915/intel_sdvo.c | 14 +- drivers/gpu/drm/i915/intel_sprite.c | 30 ++-- drivers/gpu/drm/i915/intel_tv.c | 2 +- drivers/gpu/drm/i915/intel_uncore.c | 20 +-- .../gpu/drm/i915/selftests/i915_gem_coherency.c | 4 +- drivers/gpu/drm/i915/selftests/i915_gem_context.c | 2 +- drivers/gpu/drm/i915/selftests/i915_gem_object.c | 12 +- drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 8 +- drivers/gpu/drm/i915/selftests/intel_uncore.c | 2 +- 56 files changed, 816 insertions(+), 495 deletions(-) create mode 100644 drivers/gpu/drm/i915/Kconfig.platforms -- 2.14.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
