linux-kernel - [PATCH] drm/amd/display: Increase frame-larger-than warning limit

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Message-ID: <20240530145741.7506-2-palmer@rivosinc.com>
Date: Thu, 30 May 2024 07:57:42 -0700
From: Palmer Dabbelt <palmer@...osinc.com>
To: alexander.deucher@....com
Cc: harry.wentland@....com, sunpeng.li@....com, Rodrigo.Siqueira@....com,
  christian.koenig@....com, Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch, Qingqing.Zhuo@....com,
  nathan@...nel.org, Palmer Dabbelt <palmer@...osinc.com>, hamza.mahfooz@....com,
  chenhuacai@...nel.org, amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
  linux-kernel@...r.kernel.org
Subject: [PATCH] drm/amd/display: Increase frame-larger-than warning limit

From: Palmer Dabbelt <palmer@...osinc.com>

I get a handful of build errors along the lines of

    linux/drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:58:13: error: stack frame size (2352) exceeds limit (2048) in 'DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation' [-Werror,-Wframe-larger-than]
    static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation(
                ^
    linux/drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:1724:6: error: stack frame size (2096) exceeds limit (2048) in 'dml32_ModeSupportAndSystemConfigurationFull' [-Werror,-Wframe-larger-than]
    void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib)
         ^

as of 6.10-rc1.

Signed-off-by: Palmer Dabbelt <palmer@...osinc.com>
---
 drivers/gpu/drm/amd/display/dc/dml/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile
index c4a5efd2dda5..b2bd72e63734 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile
@@ -62,9 +62,9 @@ endif
 
 ifneq ($(CONFIG_FRAME_WARN),0)
 ifeq ($(filter y,$(CONFIG_KASAN)$(CONFIG_KCSAN)),y)
-frame_warn_flag := -Wframe-larger-than=3072
+frame_warn_flag := -Wframe-larger-than=4096
 else
-frame_warn_flag := -Wframe-larger-than=2048
+frame_warn_flag := -Wframe-larger-than=3072
 endif
 endif
 
-- 
2.45.1