Quoting Tvrtko Ursulin (2018-02-08 13:05:51) > 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? Did you get to the point where the compiler was complaining about unused functions? > 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. So, if we want to support this, how do we test it? Do a per-platform build and check modinfo for pci ids? Limit the CI builds to be per-platform and check they work? -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
