[Intel-gfx] [PATCH v4 01/38] drm/i915: Add total count to context status debugfs output

[John.C.Harrison at Intel.com]

From: John Harrison <John.C.Harrison at Intel.com>

When there are lots and lots and even more lots of contexts (e.g. when
running with execlists) it is useful to be able to immediately see
what the total context count is.

v4: Re-typed a variable (review feedback from Joonas)

For: VIZ-1587
Signed-off-by: John Harrison <John.C.Harrison at Intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index b54d99e..e55294c 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1953,7 +1953,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_engine_cs *ring;
 	struct intel_context *ctx;
-	int ret, i;
+	int ret, i, count = 0;
 
 	ret = mutex_lock_interruptible(&dev->struct_mutex);
 	if (ret)
@@ -1966,6 +1966,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 
 		seq_puts(m, "HW context ");
 		describe_ctx(m, ctx);
+		count++;
 		for_each_ring(ring, dev_priv, i) {
 			if (ring->default_context == ctx)
 				seq_printf(m, "(default context %s) ",
@@ -1994,6 +1995,8 @@ static int i915_context_status(struct seq_file *m, void *unused)
 		seq_putc(m, '\n');
 	}
 
+	seq_printf(m, "Total: %d contexts\n", count);
+
 	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
-- 
1.9.1