[PATCH i-g-t] xe: Add test to check pci memory barrier capability

[Kamil Konieczny]

Hi Jani,
On 2024-10-09 at 15:02:10 +0300, Jani Nikula wrote:
> On Wed, 09 Oct 2024, Kamil Konieczny <kamil.konieczny at linux.intel.com> wrote:
> > Hi Tejas,
> > On 2024-10-09 at 15:26:08 +0530, Tejas Upadhyay wrote:
> >> We want to make sure that direct mmap mapping of physical
> >> page at doorbell space and whole page is accessible in order
> >> to use pci memory barrier effect effectively.
> >> 
> >> This is basic pci memory barrier test to showcase xe driver
> >> support for feature. In follow up patches we will have more
> >> of corner and negative tests added later.
> >> 
> >> Signed-off-by: Tejas Upadhyay <tejas.upadhyay at intel.com>
> >> ---
> >>  include/drm-uapi/xe_drm.h       |  3 ++
> >
> > Please send updates to drm-uapi with a separate patch.
> 
> Possibly the best way to codify kernel header updates would be to script
> them.

This is documented in README.md, see section about drm-uapi,

make INSTALL_HDR_PATH=<dest-dir> headers_install

also 

git log -- include/drm-uapi/xe_drm.h

could show you how it was done in the past.

Regards,
Kamil

> 
> This is what I did with intel_vbt_defs.h to automate. Should be pretty
> easy to tweak for other headers.
> 
> BR,
> Jani.
> 
> 
> #!/bin/bash
> 
> SINCE=962601ac4c78
> INFILE=drivers/gpu/drm/i915/display/intel_vbt_defs.h
> OUTFILE=tools/intel_vbt_defs.h
> KERNEL=$HOME/src/linux
> IGT=$HOME/src/intel-gpu-tools
> 
> 
> cd $KERNEL
> 
> for commit in $(git log --reverse --pretty=%h $SINCE..HEAD -- $INFILE); do
> 	ref=$(git cite $commit)
> 	git show $commit:$INFILE > $IGT/$OUTFILE
> 	cd $IGT
> 	git commit -as \
> 	    -m "tools/intel_vbt_decode: sync intel_vbt_defs.h with kernel commit $commit" \
> 	    -m "Synchronize intel_vbt_defs.h with kernel commit:" \
> 	    -m "$ref"
> 	cd -
> done
> 
> 
> -- 
> Jani Nikula, Intel