On Wed, 28 Jun 2017 12:36:35 +0200 Daniel Vetter <daniel.vetter@xxxxxxxx> wrote: > There's a bunch of folks who're trying to make printk less > contended and faster, but there's a problem: printk uses the > console_lock, and the console lock has become the BKL for all things > fbdev/fbcon, which in turn pulled in half the drm subsystem under that > lock. That's awkward. > I applied your patch and compiled it, and got this error while installing modules: DEPMOD 4.12.0-rc5-test+ depmod: ERROR: Found 11 modules in dependency cycles! depmod: ERROR: Cycle detected: fbcon -> bitblit -> softcursor -> fb -> fbcon depmod: ERROR: Cycle detected: softcursor -> fb -> fbcon_rotate -> fbcon_ccw -> softcursor depmod: ERROR: Cycle detected: fb -> fbcon_rotate -> fbcon_ccw -> fb depmod: ERROR: Cycle detected: softcursor -> fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> softcursor depmod: ERROR: Cycle detected: fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> fb depmod: ERROR: Cycle detected: softcursor -> fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> fbcon_cw -> softcursor depmod: ERROR: Cycle detected: fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> fbcon_cw -> fb depmod: ERROR: Cycle detected: fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> fbcon_cw -> fb depmod: ERROR: Cycle detected: fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> fbcon_cw -> tileblit -> fb depmod: ERROR: Cycle detected: fbcon -> bitblit -> softcursor -> fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> fbcon_cw -> tileblit -> fbdev depmod: ERROR: Cycle detected: fb -> fbcon_rotate -> fbcon_ccw -> fbcon_ud -> fbcon_cw -> tileblit -> fb /work/git/linux-trace.git/Makefile:1251: recipe for target '_modinst_post' failed Config attached. Oh, and I changed CONFIG_FB to be a module, which is probably where the error happened. -- Steve
Attachment:
config
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