drm/i915/guc: Update GuC-log relay function names

For the sake of better code readibility, change previous
relay logging function names with "capture_logs" to
"copy_debug_logs" to differentiate from error capture
functions that will use a different region of the same buffer.
Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220321164527.2500062-8-alan.previn.teres.alexis@intel.com

drivers/gpu/drm/i915/gt/uc/intel_guc_log.c

@@ -11,7 +11,7 @@
 #include "i915_memcpy.h"
 #include "intel_guc_log.h"
 
-static void guc_log_capture_logs(struct intel_guc_log *log);
+static void guc_log_copy_debuglogs_for_relay(struct intel_guc_log *log);
 
 /**
  * DOC: GuC firmware log
@@ -197,7 +197,7 @@ static unsigned int guc_get_log_buffer_size(enum guc_log_buffer_type type)
 	return 0;
 }
 
-static void guc_read_update_log_buffer(struct intel_guc_log *log)
+static void _guc_log_copy_debuglogs_for_relay(struct intel_guc_log *log)
 {
 	unsigned int buffer_size, read_offset, write_offset, bytes_to_copy, full_cnt;
 	struct guc_log_buffer_state *log_buf_state, *log_buf_snapshot_state;
@@ -222,7 +222,7 @@ static void guc_read_update_log_buffer(struct intel_guc_log *log)
 		 * Used rate limited to avoid deluge of messages, logs might be
 		 * getting consumed by User at a slow rate.
 		 */
-		DRM_ERROR_RATELIMITED("no sub-buffer to capture logs\n");
+		DRM_ERROR_RATELIMITED("no sub-buffer to copy general logs\n");
 		log->relay.full_count++;
 
 		goto out_unlock;
@@ -300,15 +300,15 @@ static void guc_read_update_log_buffer(struct intel_guc_log *log)
 	mutex_unlock(&log->relay.lock);
 }
 
-static void capture_logs_work(struct work_struct *work)
+static void copy_debug_logs_work(struct work_struct *work)
 {
 	struct intel_guc_log *log =
 		container_of(work, struct intel_guc_log, relay.flush_work);
 
-	guc_log_capture_logs(log);
+	guc_log_copy_debuglogs_for_relay(log);
 }
 
-static int guc_log_map(struct intel_guc_log *log)
+static int guc_log_relay_map(struct intel_guc_log *log)
 {
 	void *vaddr;
 
@@ -331,7 +331,7 @@ static int guc_log_map(struct intel_guc_log *log)
 	return 0;
 }
 
-static void guc_log_unmap(struct intel_guc_log *log)
+static void guc_log_relay_unmap(struct intel_guc_log *log)
 {
 	lockdep_assert_held(&log->relay.lock);
 
@@ -342,7 +342,7 @@ static void guc_log_unmap(struct intel_guc_log *log)
 void intel_guc_log_init_early(struct intel_guc_log *log)
 {
 	mutex_init(&log->relay.lock);
-	INIT_WORK(&log->relay.flush_work, capture_logs_work);
+	INIT_WORK(&log->relay.flush_work, copy_debug_logs_work);
 	log->relay.started = false;
 }
 
@@ -357,8 +357,11 @@ static int guc_log_relay_create(struct intel_guc_log *log)
 	lockdep_assert_held(&log->relay.lock);
 	GEM_BUG_ON(!log->vma);
 
-	 /* Keep the size of sub buffers same as shared log buffer */
-	subbuf_size = log->vma->size;
+	 /*
+	  * Keep the size of sub buffers same as shared log buffer
+	  * but GuC log-events excludes the error-state-capture logs
+	  */
+	subbuf_size = log->vma->size - CAPTURE_BUFFER_SIZE;
 
 	/*
 	 * Store up to 8 snapshots, which is large enough to buffer sufficient
@@ -393,13 +396,13 @@ static void guc_log_relay_destroy(struct intel_guc_log *log)
 	log->relay.channel = NULL;
 }
 
-static void guc_log_capture_logs(struct intel_guc_log *log)
+static void guc_log_copy_debuglogs_for_relay(struct intel_guc_log *log)
 {
 	struct intel_guc *guc = log_to_guc(log);
 	struct drm_i915_private *dev_priv = guc_to_gt(guc)->i915;
 	intel_wakeref_t wakeref;
 
-	guc_read_update_log_buffer(log);
+	_guc_log_copy_debuglogs_for_relay(log);
 
 	/*
 	 * Generally device is expected to be active only at this
@@ -565,7 +568,7 @@ int intel_guc_log_relay_open(struct intel_guc_log *log)
 	if (ret)
 		goto out_unlock;
 
-	ret = guc_log_map(log);
+	ret = guc_log_relay_map(log);
 	if (ret)
 		goto out_relay;
 
@@ -615,8 +618,8 @@ void intel_guc_log_relay_flush(struct intel_guc_log *log)
 	with_intel_runtime_pm(guc_to_gt(guc)->uncore->rpm, wakeref)
 		guc_action_flush_log(guc);
 
-	/* GuC would have updated log buffer by now, so capture it */
-	guc_log_capture_logs(log);
+	/* GuC would have updated log buffer by now, so copy it */
+	guc_log_copy_debuglogs_for_relay(log);
 }
 
 /*
@@ -645,7 +648,7 @@ void intel_guc_log_relay_close(struct intel_guc_log *log)
 
 	mutex_lock(&log->relay.lock);
 	GEM_BUG_ON(!intel_guc_log_relay_created(log));
-	guc_log_unmap(log);
+	guc_log_relay_unmap(log);
 	guc_log_relay_destroy(log);
 	mutex_unlock(&log->relay.lock);
 }