Alongside the hw capabilities, it is useful to know which of those have
been overridden by the user setting module parameters.
v2: Use __always_inline and BUILD_BUG magic
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 3ae06568df7b..152f23db4ec2 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -61,6 +61,21 @@ drm_add_fake_info_node(struct drm_minor *minor,
return 0;
}
+static __always_inline void seq_print_param(struct seq_file *m,
+ const char *name,
+ const char *type,
+ const void *x)
+{
+ if (!__builtin_strcmp(type, "bool"))
+ seq_printf(m, "i915.%s=%s\n", name, yesno(*(const bool *)x));
+ else if (!__builtin_strcmp(type, "int"))
+ seq_printf(m, "i915.%s=%d\n", name, *(const int *)x);
+ else if (!__builtin_strcmp(type, "unsigned int"))
+ seq_printf(m, "i915.%s=%u\n", name, *(const unsigned int *)x);
+ else
+ BUILD_BUG();
+}
+
static int i915_capabilities(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
@@ -69,10 +84,17 @@ static int i915_capabilities(struct seq_file *m, void *data)
seq_printf(m, "gen: %d\n", INTEL_GEN(dev_priv));
seq_printf(m, "platform: %s\n", intel_platform_name(info->platform));
seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev_priv));
+
#define PRINT_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG);
#undef PRINT_FLAG
+ kernel_param_lock(THIS_MODULE);
+#define PRINT_PARAM(T, x) seq_print_param(m, #x, #T, &i915.x);
+ I915_PARAMS_FOR_EACH(PRINT_PARAM);
+#undef PRINT_PARAM
+ kernel_param_unlock(THIS_MODULE);
+
return 0;
}
--
2.11.0
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