On Fri, Mar 19, 2021 at 2:47 PM Christian König <christian.koenig@xxxxxxx> wrote: > > > > Am 19.03.21 um 19:26 schrieb Harry Wentland: > > On 2021-03-19 2:13 p.m., Alex Deucher wrote: > >> + Harry, Nick > >> > >> On Fri, Mar 19, 2021 at 4:24 AM Lee Jones <lee.jones@xxxxxxxxxx> wrote: > >>> > >>> Fixes the following W=1 kernel build warning(s): > >>> > >>> drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dce_calcs.c: In > >>> function ‘calculate_bandwidth’: > >>> drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dce_calcs.c:2016:1: > >>> warning: the frame size of 1216 bytes is larger than 1024 bytes > >>> [-Wframe-larger-than=] > >>> > >>> Cc: Harry Wentland <harry.wentland@xxxxxxx> > >>> Cc: Leo Li <sunpeng.li@xxxxxxx> > >>> Cc: Alex Deucher <alexander.deucher@xxxxxxx> > >>> Cc: "Christian König" <christian.koenig@xxxxxxx> > >>> Cc: David Airlie <airlied@xxxxxxxx> > >>> Cc: Daniel Vetter <daniel@xxxxxxxx> > >>> Cc: Colin Ian King <colin.king@xxxxxxxxxxxxx> > >>> Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > >>> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx > >>> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> > >>> --- > >>> .../gpu/drm/amd/display/dc/calcs/dce_calcs.c | 32 > >>> ++++++++++++++++--- > >>> 1 file changed, 28 insertions(+), 4 deletions(-) > >>> > >>> diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c > >>> b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c > >>> index e633f8a51edb6..9d8f2505a61c2 100644 > >>> --- a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c > >>> +++ b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c > >>> @@ -98,16 +98,16 @@ static void calculate_bandwidth( > >>> int32_t num_cursor_lines; > >>> > >>> int32_t i, j, k; > >>> - struct bw_fixed yclk[3]; > >>> - struct bw_fixed sclk[8]; > >>> + struct bw_fixed *yclk; > >>> + struct bw_fixed *sclk; > >>> bool d0_underlay_enable; > >>> bool d1_underlay_enable; > >>> bool fbc_enabled; > >>> bool lpt_enabled; > >>> enum bw_defines sclk_message; > >>> enum bw_defines yclk_message; > >>> - enum bw_defines tiling_mode[maximum_number_of_surfaces]; > >>> - enum bw_defines surface_type[maximum_number_of_surfaces]; > >>> + enum bw_defines *tiling_mode; > >>> + enum bw_defines *surface_type; > >>> enum bw_defines voltage; > >>> enum bw_defines pipe_check; > >>> enum bw_defines hsr_check; > >>> @@ -122,6 +122,22 @@ static void calculate_bandwidth( > >>> int32_t number_of_displays_enabled_with_margin = 0; > >>> int32_t number_of_aligned_displays_with_no_margin = 0; > >>> > >>> + yclk = kcalloc(3, sizeof(*yclk), GFP_KERNEL); > >>> + if (!yclk) > >>> + return; > >>> + > >>> + sclk = kcalloc(8, sizeof(*sclk), GFP_KERNEL); > >>> + if (!sclk) > >>> + goto free_yclk; > >>> + > >>> + tiling_mode = kcalloc(maximum_number_of_surfaces, > >>> sizeof(*tiling_mode), GFP_KERNEL); > >>> + if (!tiling_mode) > >>> + goto free_sclk; > >>> + > >>> + surface_type = kcalloc(maximum_number_of_surfaces, > >>> sizeof(*surface_type), GFP_KERNEL); > >>> + if (!surface_type) > >>> + goto free_tiling_mode; > >>> + > >> > >> > >> Harry or Nick can correct me if I'm wrong, but for this patch and the > >> next one, I think this can be called from an atomic context. > >> > > > > From what I can see this doesn't seem the case. If I'm missing > > something someone please correct me. > > Have you taken into account that using FP functions require atomic > context as well? > > We had quite a bunch of problems with that and had to replace some > GFP_KERNEL with GFP_ATOMIC in the DC code because of this. > > Could of course be that this code here isn't affected by that, but > better save than sorry. DCE hardware uses fixed point math so that should be ok. It's just the newer DCN hardware that requires FP. Alex > > Christian. > > > > > This and the next (06/19) patch are both > > Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx> > > > > Harry > > > >> Alex > >> > >>> yclk[low] = vbios->low_yclk; > >>> yclk[mid] = vbios->mid_yclk; > >>> yclk[high] = vbios->high_yclk; > >>> @@ -2013,6 +2029,14 @@ static void calculate_bandwidth( > >>> } > >>> } > >>> } > >>> + > >>> + kfree(surface_type); > >>> +free_tiling_mode: > >>> + kfree(tiling_mode); > >>> +free_yclk: > >>> + kfree(yclk); > >>> +free_sclk: > >>> + kfree(sclk); > >>> } > >>> > >>> /******************************************************************************* > >>> -- > >>> 2.27.0 > >>> > >>> _______________________________________________ > >>> dri-devel mailing list > >>> dri-devel@xxxxxxxxxxxxxxxxxxxxx > >>> https://lists.freedesktop.org/mailman/listinfo/dri-devel> > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
