Messages in this thread | | | From | Rob Clark <> | Date | Mon, 17 Apr 2023 13:45:08 -0700 | Subject | Re: [RFC 0/3] drm: Add comm/cmdline fdinfo fields |
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On Mon, Apr 17, 2023 at 1:12 PM Rob Clark <robdclark@gmail.com> wrote: > > From: Rob Clark <robdclark@chromium.org> > > When many of the things using the GPU are processes in a VM guest, the > actual client process is just a proxy. The msm driver has a way to let > the proxy tell the kernel the actual VM client process's executable name > and command-line, which has until now been used simply for GPU crash > devcore dumps. Lets also expose this via fdinfo so that tools can > expose who the actual user of the GPU is.
I should have also mentioned, in the VM/proxy scenario we have a single process with separate drm_file's for each guest VM process. So it isn't an option to just change the proxy process's name to match the client.
> Rob Clark (3): > drm/doc: Relax fdinfo string constraints > drm/msm: Rework get_comm_cmdline() helper > drm/msm: Add comm/cmdline fields > > Documentation/gpu/drm-usage-stats.rst | 37 +++++++++++++++---------- > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 +-- > drivers/gpu/drm/msm/msm_drv.c | 2 ++ > drivers/gpu/drm/msm/msm_gpu.c | 27 +++++++++++++----- > drivers/gpu/drm/msm/msm_gpu.h | 12 ++++++-- > drivers/gpu/drm/msm/msm_submitqueue.c | 1 + > 6 files changed, 58 insertions(+), 25 deletions(-) > > -- > 2.39.2 >
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