linux-kernel - [PATCH 18/19] gpu: drm: amd: amdgpu: amdgpu: Mark global variables as __maybe

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Message-Id: <20201105144517.1826692-19-lee.jones@linaro.org>
Date:   Thu,  5 Nov 2020 14:45:16 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-media@...r.kernel.org, linaro-mm-sig@...ts.linaro.org
Subject: [PATCH 18/19] gpu: drm: amd: amdgpu: amdgpu: Mark global variables as __maybe_unused

These 3 variables are used in *some* sourcefiles which include
amdgpu.h, but not *all*.  This leads to a flurry of build warnings.

Fixes the following W=1 kernel build warning(s):

 from drivers/gpu/drm/amd/amdgpu/amdgpu.h:67,
 drivers/gpu/drm/amd/amdgpu/amdgpu.h:198:19: warning: ‘no_system_mem_limit’ defined but not used [-Wunused-const-variable=]
 drivers/gpu/drm/amd/amdgpu/amdgpu.h:197:19: warning: ‘debug_evictions’ defined but not used [-Wunused-const-variable=]
 drivers/gpu/drm/amd/amdgpu/amdgpu.h:196:18: warning: ‘sched_policy’ defined but not used [-Wunused-const-variable=]

 NB: Repeats ~650 times - snipped for brevity.

Cc: Alex Deucher <alexander.deucher@....com>
Cc: "Christian König" <christian.koenig@....com>
Cc: David Airlie <airlied@...ux.ie>
Cc: Daniel Vetter <daniel@...ll.ch>
Cc: Sumit Semwal <sumit.semwal@...aro.org>
Cc: amd-gfx@...ts.freedesktop.org
Cc: dri-devel@...ts.freedesktop.org
Cc: linux-media@...r.kernel.org
Cc: linaro-mm-sig@...ts.linaro.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 183b09d71b64a..5939753080056 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -193,9 +193,9 @@ extern int sched_policy;
 extern bool debug_evictions;
 extern bool no_system_mem_limit;
 #else
-static const int sched_policy = KFD_SCHED_POLICY_HWS;
-static const bool debug_evictions; /* = false */
-static const bool no_system_mem_limit;
+static const int __maybe_unused sched_policy = KFD_SCHED_POLICY_HWS;
+static const bool __maybe_unused debug_evictions; /* = false */
+static const bool __maybe_unused no_system_mem_limit;
 #endif
 
 extern int amdgpu_tmz;
-- 
2.25.1