On 11.01.2023 15:55, Radhakrishna Sripada wrote:
> From: Andi Shyti <andi.sh...@intel.com>
>
> In the view of multi-gt we want independent per gt debug files.
>
> In debugfs create gt0/ gt1/ ... gtN/ for gt related files. In
> platforms with 2 gt's, the debugfs would be structured as follows:
>
> /sys/kernel/debug/dri
> └── 0
> ├── gt0
> │ ├── drpc
> │ ├── engines
> │ ├── forcewake
> │ ├── frequency
> │ └── rps_boost
> └─- gt1
> : ├── drpc
> : ├── engines
> : ├── forcewake
> ├── frequency
> └── rps_boost
>
> Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
> Signed-off-by: Andi Shyti <andi.sh...@intel.com>
> Signed-off-by: Radhakrishna Sripada <radhakrishna.srip...@intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_gt_debugfs.c | 4 +++-
> drivers/gpu/drm/i915/gt/uc/intel_guc.h | 2 ++
> drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 5 ++++-
> drivers/gpu/drm/i915/gt/uc/intel_uc_debugfs.c | 2 ++
> 4 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> index 5fc2df01aa0d..4dc23b8d3aa2 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> @@ -83,11 +83,13 @@ static void gt_debugfs_register(struct intel_gt *gt,
> struct dentry *root)
> void intel_gt_debugfs_register(struct intel_gt *gt)
> {
> struct dentry *root;
> + char gtname[4];
>
> if (!gt->i915->drm.primary->debugfs_root)
> return;
>
> - root = debugfs_create_dir("gt", gt->i915->drm.primary->debugfs_root);
> + snprintf(gtname, sizeof(gtname), "gt%u", gt->info.id);
> + root = debugfs_create_dir(gtname, gt->i915->drm.primary->debugfs_root);
> if (IS_ERR(root))
> return;
>
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
> b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
> index bb4dfe707a7d..e46aac1a41e6 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
> @@ -42,6 +42,8 @@ struct intel_guc {
> /** @capture: the error-state-capture module's data and objects */
> struct intel_guc_state_capture *capture;
>
> + struct dentry *dbgfs_node;
> +
> /** @sched_engine: Global engine used to submit requests to GuC */
> struct i915_sched_engine *sched_engine;
> /**
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
> b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
> index 68331c538b0a..71b1f23b64c1 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
> @@ -542,8 +542,11 @@ static int guc_log_relay_create(struct intel_guc_log
> *log)
> */
> n_subbufs = 8;
>
> + if (!guc->dbgfs_node)
> + return -ENOENT;
> +
> guc_log_relay_chan = relay_open("guc_log",
> - dev_priv->drm.primary->debugfs_root,
> + guc->dbgfs_node,
> subbuf_size, n_subbufs,
> &relay_callbacks, dev_priv);
> if (!guc_log_relay_chan) {
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_debugfs.c
> b/drivers/gpu/drm/i915/gt/uc/intel_uc_debugfs.c
> index 284d6fbc2d08..2f93cc4e408a 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_debugfs.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_debugfs.c
> @@ -54,6 +54,8 @@ void intel_uc_debugfs_register(struct intel_uc *uc, struct
> dentry *gt_root)
> if (IS_ERR(root))
> return;
>
> + uc->guc.dbgfs_node = root;
> +
This hunk is implementing a new change to what is decribed in the
commit. It is actually moving the
> intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), uc);
>
> intel_guc_debugfs_register(&uc->guc, root);
> --
> 2.34.1
>
