kernel/linux.git/drivers/gpu/drm/xe/xe_guc_debugfs.c, branch linux-7.0.y

drm/xe: Cleanup unused header includes

2026-01-15T15:05:04+00:00

clangd reports many "unused header" warnings throughout the Xe driver. Start working to clean this up by removing unnecessary includes in our .c files and/or replacing them with explicit includes of other headers that were previously being included indirectly. By far the most common offender here was unnecessary inclusion of xe_gt.h. That likely originates from the early days of xe.ko when xe_mmio did not exist and all register accesses, including those unrelated to GTs, were done with GT functions. There's still a lot of additional #include cleanup that can be done in the headers themselves; that will come as a followup series. v2: - Squash the 79-patch series down to a single patch. (MattB) Reviewed-by: Matthew Brost Link: https://patch.msgid.link/20260115032803.4067824-2-matthew.d.roper@intel.com Signed-off-by: Matt Roper

drm/xe/guc: Add new debugfs entry for lfd format output

2025-12-04T21:43:37+00:00

Add new debugfs entry "guc_log_lfd", prepared for output guc log in LFD(Log Format Descriptors) format. Signed-off-by: Zhanjun Dong Reviewed-by: Julia Filipchuk Signed-off-by: Ashutosh Dixit Link: https://patch.msgid.link/20251127170759.2620994-7-zhanjun.dong@intel.com

drm/xe/debugfs: Use scope-based runtime PM

2025-11-19T19:58:58+00:00

Switch the debugfs code to use scope-based runtime PM where possible, for consistency with other parts of the driver. v2: - Drop unnecessary 'ret' variables. (Gustavo) Reviewed-by: Gustavo Sousa Link: https://patch.msgid.link/20251118164338.3572146-56-matthew.d.roper@intel.com Signed-off-by: Matt Roper

drm/xe/guc: Make creation of SLPC debugfs files conditional

2025-05-19T16:00:05+00:00

Platforms that do not support SLPC are exempted from the GuC PC support. The GuC PC does not get initialized, and neither do its BOs get created. This causes a problem because the GuC PC debugfs file is still being created. Whenever the file is attempted to read, it causes a NULL pointer dereference on the supposed BO of the GuC PC. So, make the creation of SLPC debugfs files conditional to when SLPC features are supported. Fixes: aaab5404b16f ("drm/xe: Introduce GuC PC debugfs") Suggested-by: Matt Roper Reviewed-by: Tejas Upadhyay Reviewed-by: Stuart Summers Signed-off-by: Aradhya Bhatia Link: https://lore.kernel.org/r/20250516141902.5614-1-aradhya.bhatia@intel.com Signed-off-by: Matt Roper

drm/xe/guc: Don't expose GuC privileged debugfs files if VF

2025-04-11T10:14:30+00:00

Some of the GuC debugfs files require access to the data that is not available on the VFs. Don't expose those files on the VF driver. Signed-off-by: Michal Wajdeczko Reviewed-by: Lucas De Marchi Link: https://lore.kernel.org/r/20250403142635.1821-3-michal.wajdeczko@intel.com

drm/xe/guc: Refactor GuC debugfs initialization

2025-04-11T10:13:46+00:00

We don't have to drmm_kmalloc() local copy of debugfs_list to write there our pointer to the struct xe_guc as we can extract pointer to the struct xe_gt from the grandparent debugfs entry, in similar way to what we did for GT debugfs files. Note that there is no change in file/directory structure, just refactored how files are created and how functions are called. Signed-off-by: Michal Wajdeczko Reviewed-by: Lucas De Marchi Link: https://lore.kernel.org/r/20250403142635.1821-2-michal.wajdeczko@intel.com

drm/xe/debugfs: Add node to dump guc log to dmesg

2025-02-12T03:41:30+00:00

Currently xe_guc_log_print_dmesg() is unused, as it's expected developers to add those calls when needed. However it makes it hard to guarantee it's working as nothing is testing it. Add a node in debugfs so it can be tested. This is purely for testing purposes since with the device probed and working, the guc log can be obtained by the regular debugfs file. Reviewed-by: Alan Previn Link: https://patchwork.freedesktop.org/patch/msgid/20250131171716.3998432-1-lucas.demarchi@intel.com Signed-off-by: Lucas De Marchi

drm/xe: Introduce GuC PC debugfs

2025-01-15T19:12:52+00:00

Allows the visualization of the current GuC power conservation status and policies. v2: Fix DCC msg (Vinay) v3: Simplify pc_get_state_string (Jonathan) Reviewed-by: Vinay Belgaumkar Reviewed-by: Jonathan Cavitt Link: https://patchwork.freedesktop.org/patch/msgid/20250115145053.1142023-1-rodrigo.vivi@intel.com Signed-off-by: Rodrigo Vivi

drm/xe/guc: Separate full CTB content from guc_info debugfs

2024-10-29T20:11:34+00:00

The guc_info debugfs file is meant to be a quick view of the current software state of the GuC interface. Including the full CTB contents makes the file as a whole much less human readable and is not partiular useful in the general case. So don't pollute the info dump with the full buffers. Instead, move those into a separate debugfs entry that can be read when that information is actually required. Also, improve the human readability by adding a few extra blank lines to delimt the sections. v2: Hide the internal capture/print params from external callers that don't need to know (review feedback from Matthew Brost). Signed-off-by: John Harrison Reviewed-by: Matthew Brost Link: https://patchwork.freedesktop.org/patch/msgid/20241024002554.1983101-3-John.C.Harrison@Intel.com

drm/xe: Runtime PM wake on every debugfs call

2024-02-26T14:06:45+00:00

Let's ensure our PCI device is awaken on every debugfs call. Let's increase the runtime_pm protection and start moving that to the outer bounds. Also let's remove the mem_access_{get,put} from where they are not needed anymore. Reviewed-by: Matthew Auld Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20240222163937.138342-7-rodrigo.vivi@intel.com