[PATCH 2/2] drm/amdgpu: Move clocks closer to its only usage in amdgpu_parse_cg_state()

[Alex Deucher]

Applied the series.  Thanks!

Alex

On Thu, Jun 15, 2023 at 1:06 PM Nathan Chancellor <nathan at kernel.org> wrote:
>
> After commit a25a9dae2067 ("drm/amd/amdgpu: enable W=1 for amdgpu"),
> there is an instance of -Wunused-const-variable when CONFIG_DEBUG_FS is
> disabled:
>
>   drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_pm.c:38:34: error: unused variable 'clocks' [-Werror,-Wunused-const-variable]
>      38 | static const struct cg_flag_name clocks[] = {
>         |                                  ^
>   1 error generated.
>
> clocks is only used when CONFIG_DEBUG_FS is set, so move the definition
> into the CONFIG_DEBUG_FS block right above its only usage to clear up
> the warning.
>
> Signed-off-by: Nathan Chancellor <nathan at kernel.org>
> ---
>  drivers/gpu/drm/amd/pm/amdgpu_pm.c | 76 +++++++++++++++++++-------------------
>  1 file changed, 38 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> index a57952b93e73..386ccf11e657 100644
> --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> @@ -35,44 +35,6 @@
>  #include <linux/pm_runtime.h>
>  #include <asm/processor.h>
>
> -static const struct cg_flag_name clocks[] = {
> -       {AMD_CG_SUPPORT_GFX_FGCG, "Graphics Fine Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_GFX_MGCG, "Graphics Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_GFX_MGLS, "Graphics Medium Grain memory Light Sleep"},
> -       {AMD_CG_SUPPORT_GFX_CGCG, "Graphics Coarse Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_GFX_CGLS, "Graphics Coarse Grain memory Light Sleep"},
> -       {AMD_CG_SUPPORT_GFX_CGTS, "Graphics Coarse Grain Tree Shader Clock Gating"},
> -       {AMD_CG_SUPPORT_GFX_CGTS_LS, "Graphics Coarse Grain Tree Shader Light Sleep"},
> -       {AMD_CG_SUPPORT_GFX_CP_LS, "Graphics Command Processor Light Sleep"},
> -       {AMD_CG_SUPPORT_GFX_RLC_LS, "Graphics Run List Controller Light Sleep"},
> -       {AMD_CG_SUPPORT_GFX_3D_CGCG, "Graphics 3D Coarse Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_GFX_3D_CGLS, "Graphics 3D Coarse Grain memory Light Sleep"},
> -       {AMD_CG_SUPPORT_MC_LS, "Memory Controller Light Sleep"},
> -       {AMD_CG_SUPPORT_MC_MGCG, "Memory Controller Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_SDMA_LS, "System Direct Memory Access Light Sleep"},
> -       {AMD_CG_SUPPORT_SDMA_MGCG, "System Direct Memory Access Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_BIF_MGCG, "Bus Interface Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_BIF_LS, "Bus Interface Light Sleep"},
> -       {AMD_CG_SUPPORT_UVD_MGCG, "Unified Video Decoder Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_VCE_MGCG, "Video Compression Engine Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_HDP_LS, "Host Data Path Light Sleep"},
> -       {AMD_CG_SUPPORT_HDP_MGCG, "Host Data Path Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_DRM_MGCG, "Digital Right Management Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_DRM_LS, "Digital Right Management Light Sleep"},
> -       {AMD_CG_SUPPORT_ROM_MGCG, "Rom Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_DF_MGCG, "Data Fabric Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_VCN_MGCG, "VCN Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_HDP_DS, "Host Data Path Deep Sleep"},
> -       {AMD_CG_SUPPORT_HDP_SD, "Host Data Path Shutdown"},
> -       {AMD_CG_SUPPORT_IH_CG, "Interrupt Handler Clock Gating"},
> -       {AMD_CG_SUPPORT_JPEG_MGCG, "JPEG Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_REPEATER_FGCG, "Repeater Fine Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_GFX_PERF_CLK, "Perfmon Clock Gating"},
> -       {AMD_CG_SUPPORT_ATHUB_MGCG, "Address Translation Hub Medium Grain Clock Gating"},
> -       {AMD_CG_SUPPORT_ATHUB_LS, "Address Translation Hub Light Sleep"},
> -       {0, NULL},
> -};
> -
>  static const struct hwmon_temp_label {
>         enum PP_HWMON_TEMP channel;
>         const char *label;
> @@ -3684,6 +3646,44 @@ static int amdgpu_debugfs_pm_info_pp(struct seq_file *m, struct amdgpu_device *a
>         return 0;
>  }
>
> +static const struct cg_flag_name clocks[] = {
> +       {AMD_CG_SUPPORT_GFX_FGCG, "Graphics Fine Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_GFX_MGCG, "Graphics Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_GFX_MGLS, "Graphics Medium Grain memory Light Sleep"},
> +       {AMD_CG_SUPPORT_GFX_CGCG, "Graphics Coarse Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_GFX_CGLS, "Graphics Coarse Grain memory Light Sleep"},
> +       {AMD_CG_SUPPORT_GFX_CGTS, "Graphics Coarse Grain Tree Shader Clock Gating"},
> +       {AMD_CG_SUPPORT_GFX_CGTS_LS, "Graphics Coarse Grain Tree Shader Light Sleep"},
> +       {AMD_CG_SUPPORT_GFX_CP_LS, "Graphics Command Processor Light Sleep"},
> +       {AMD_CG_SUPPORT_GFX_RLC_LS, "Graphics Run List Controller Light Sleep"},
> +       {AMD_CG_SUPPORT_GFX_3D_CGCG, "Graphics 3D Coarse Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_GFX_3D_CGLS, "Graphics 3D Coarse Grain memory Light Sleep"},
> +       {AMD_CG_SUPPORT_MC_LS, "Memory Controller Light Sleep"},
> +       {AMD_CG_SUPPORT_MC_MGCG, "Memory Controller Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_SDMA_LS, "System Direct Memory Access Light Sleep"},
> +       {AMD_CG_SUPPORT_SDMA_MGCG, "System Direct Memory Access Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_BIF_MGCG, "Bus Interface Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_BIF_LS, "Bus Interface Light Sleep"},
> +       {AMD_CG_SUPPORT_UVD_MGCG, "Unified Video Decoder Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_VCE_MGCG, "Video Compression Engine Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_HDP_LS, "Host Data Path Light Sleep"},
> +       {AMD_CG_SUPPORT_HDP_MGCG, "Host Data Path Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_DRM_MGCG, "Digital Right Management Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_DRM_LS, "Digital Right Management Light Sleep"},
> +       {AMD_CG_SUPPORT_ROM_MGCG, "Rom Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_DF_MGCG, "Data Fabric Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_VCN_MGCG, "VCN Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_HDP_DS, "Host Data Path Deep Sleep"},
> +       {AMD_CG_SUPPORT_HDP_SD, "Host Data Path Shutdown"},
> +       {AMD_CG_SUPPORT_IH_CG, "Interrupt Handler Clock Gating"},
> +       {AMD_CG_SUPPORT_JPEG_MGCG, "JPEG Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_REPEATER_FGCG, "Repeater Fine Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_GFX_PERF_CLK, "Perfmon Clock Gating"},
> +       {AMD_CG_SUPPORT_ATHUB_MGCG, "Address Translation Hub Medium Grain Clock Gating"},
> +       {AMD_CG_SUPPORT_ATHUB_LS, "Address Translation Hub Light Sleep"},
> +       {0, NULL},
> +};
> +
>  static void amdgpu_parse_cg_state(struct seq_file *m, u64 flags)
>  {
>         int i;
>
> --
> 2.41.0
>