drm/i915/gt: Rearrange code to silence compiler

Without selftests enabled, I915_SELFTEST_ONLY becomes a dummy,
generating a bare '0'. This causes the compiler to complain about a
useless line, and while we could use I915_SELFTEST_DECLARE instead, it
is a bit messier. Move the selftest-only code to a helper and make that
conditional on having selftests enabled.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200217095835.599827-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 78e8544..ba31cbe 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1206,6 +1206,14 @@ static u32 intel_context_get_runtime(const struct intel_context *ce)
        return READ_ONCE(ce->lrc_reg_state[CTX_TIMESTAMP]);
 }
 
+static void st_update_runtime_underflow(struct intel_context *ce, s32 dt)
+{
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+       ce->runtime.num_underflow += dt < 0;
+       ce->runtime.max_underflow = max_t(u32, ce->runtime.max_underflow, -dt);
+#endif
+}
+
 static void intel_context_update_runtime(struct intel_context *ce)
 {
        u32 old;
@@ -1221,9 +1229,7 @@ static void intel_context_update_runtime(struct intel_context *ce)
        if (unlikely(dt <= 0)) {
                CE_TRACE(ce, "runtime underflow: last=%u, new=%u, delta=%d\n",
                         old, ce->runtime.last, dt);
-               I915_SELFTEST_ONLY(ce->runtime.num_underflow += dt < 0);
-               I915_SELFTEST_ONLY(ce->runtime.max_underflow =
-                                  max_t(u32, ce->runtime.max_underflow, -dt));
+               st_update_runtime_underflow(ce, dt);
                return;
        }