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The full error message from make:

    In file included from /home/huexxx/ubuntu-modules/linux-5.8.0/drivers/gpu/drm/radeon/radeon_trace.h:209,
                 from /home/huexxx/ubuntu-modules/linux-5.8.0/drivers/gpu/drm/radeon/radeon_trace_points.c:10:
./include/trace/define_trace.h:95:42: fatal error: ../../drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio
   95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
      |                                          ^
compilation terminated.

I've been trying to follow this to modify, build, and insert the radeon module into the already built kernel without having to build the whole kernel as I do always in order to reduce compiling time.

It happens when I run make -C /lib/modules/5.8.0-31-generic/build M=$(pwd)/drivers/gpu/drm/radeon modules from the directory /home/huexxx/ubuntu-modules/linux-5.8.0

I've already searched a solution to this, and there are precedents for the same problem like you can see here. The proposed solution is to add two (in this case acording to path depth) ../ to correct on radeon_trace.h the relative path to add to TRACE_INCLUDE_PATH, but it doesn't work with any number of ../ added... I've tried all the possibilities...

./include/trace/define_trace.h:95:42: fatal error: ../../../../drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio

./include/trace/define_trace.h:95:42: fatal error: ../../../../../drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio


./include/trace/define_trace.h:95:42: fatal error: ../../../drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio


./include/trace/define_trace.h:95:42: fatal error: ../drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio


./include/trace/define_trace.h:95:42: fatal error: ./drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio


./include/trace/define_trace.h:95:42: fatal error: drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio


./include/trace/define_trace.h:95:42: fatal error: /drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio

(yeah, it's stupid to try nonsense abslute paths... but is due to desesperation).

Then, I've tried to use absolute path... but linux is replaced by 1...

./include/trace/define_trace.h:95:42: fatal error: /home/huexxx/ubuntu-modules/1-5.8.0/drivers/gpu/drm/radeon/radeon_trace.h: No existe el archivo o el directorio

Then, in a last effort... I've renamed linux-5.8.0 folder to lin-5.8.0 to avoid the replacing problem... and it finally works!

LD [M]  /home/huexxx/ubuntu-modules/lin-5.8.0/drivers/gpu/drm/radeon/radeon.ko

Well... the reason of the post is to know:

  • Why the compile doesn't directly work, because the addition of ../../ on the path is a well known patch to drivers' code.

  • Why the compile doesn't work modifying the relative path in any way... the file should be there in one of the possibilities.

  • Why linux is replaced by 1 if I put it in the absolute path.

Best regards.

Huexxx
  • 11
  • Why are you trying yo build radeon module. It is already built in the kernel. – Pilot6 Dec 11 '20 at 09:22
  • In order to patch the driver to unlock the TMDS-pixelclock.

    In my old HD 6870 it's limited to 165MHz using HDMI, and with the patch I can get 2560x1440 at 60Hz, while with stock driver it's limited to 1920x1080 60Hz.

    You can get more info here:

    https://www.elstel.org/software/hunt-for-4K-UHD-2160p.html.en

    https://euphi.github.io/2017/12/31/UHD-Monitor-Linux.html

    Let me know if you need more info.

     – Huexxx Dec 11 '20 at 15:52

0 Answers0