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drm/amd/display: Use kvzalloc for potentially large allocations

Ver a proveniência 
Allocating up to 32 physically contiguous pages can easily fail (and has
failed for me), and isn't necessary anyway.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Este cometimento está contido em:
Michel Dänzer
2018-04-17 12:25:22 +02:00
cometido por Alex Deucher
ascendente f333625426
cometimento f7dbe9186d
2 ficheiros modificados com 45 adições e 41 eliminações
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72
drivers/gpu/drm/amd/display/modules/color/color_gamma.c
Ver ficheiro

@@ -1274,19 +1274,19 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
output_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
rgb_user = kzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
rgb_user = kvzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_user)
goto rgb_user_alloc_fail;
rgb_regamma = kzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
rgb_regamma = kvzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_regamma)
goto rgb_regamma_alloc_fail;
axix_x = kzalloc(sizeof(*axix_x) * (ramp->num_entries + 3),
GFP_KERNEL);
axix_x = kvzalloc(sizeof(*axix_x) * (ramp->num_entries + 3),
GFP_KERNEL);
if (!axix_x)
goto axix_x_alloc_fail;
coeff = kzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
coeff = kvzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
if (!coeff)
goto coeff_alloc_fail;
@@ -1338,13 +1338,13 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
ret = true;
kfree(coeff);
kvfree(coeff);
coeff_alloc_fail:
kfree(axix_x);
kvfree(axix_x);
axix_x_alloc_fail:
kfree(rgb_regamma);
kvfree(rgb_regamma);
rgb_regamma_alloc_fail:
kfree(rgb_user);
kvfree(rgb_user);
rgb_user_alloc_fail:
return ret;
}
@@ -1480,19 +1480,19 @@ bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf,
input_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
rgb_user = kzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
rgb_user = kvzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_user)
goto rgb_user_alloc_fail;
curve = kzalloc(sizeof(*curve) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
curve = kvzalloc(sizeof(*curve) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!curve)
goto curve_alloc_fail;
axix_x = kzalloc(sizeof(*axix_x) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
axix_x = kvzalloc(sizeof(*axix_x) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
if (!axix_x)
goto axix_x_alloc_fail;
coeff = kzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
coeff = kvzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
if (!coeff)
goto coeff_alloc_fail;
@@ -1534,13 +1534,13 @@ bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf,
ret = true;
kfree(coeff);
kvfree(coeff);
coeff_alloc_fail:
kfree(axix_x);
kvfree(axix_x);
axix_x_alloc_fail:
kfree(curve);
kvfree(curve);
curve_alloc_fail:
kfree(rgb_user);
kvfree(rgb_user);
rgb_user_alloc_fail:
return ret;
@@ -1569,8 +1569,9 @@ bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
} else if (trans == TRANSFER_FUNCTION_PQ) {
rgb_regamma = kzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_regamma = kvzalloc(sizeof(*rgb_regamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_regamma)
goto rgb_regamma_alloc_fail;
points->end_exponent = 7;
@@ -1590,11 +1591,12 @@ bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_regamma);
kvfree(rgb_regamma);
} else if (trans == TRANSFER_FUNCTION_SRGB ||
trans == TRANSFER_FUNCTION_BT709) {
rgb_regamma = kzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_regamma = kvzalloc(sizeof(*rgb_regamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_regamma)
goto rgb_regamma_alloc_fail;
points->end_exponent = 0;
@@ -1612,7 +1614,7 @@ bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_regamma);
kvfree(rgb_regamma);
}
rgb_regamma_alloc_fail:
return ret;
@@ -1636,8 +1638,9 @@ bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
} else if (trans == TRANSFER_FUNCTION_PQ) {
rgb_degamma = kzalloc(sizeof(*rgb_degamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_degamma = kvzalloc(sizeof(*rgb_degamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_degamma)
goto rgb_degamma_alloc_fail;
@@ -1652,11 +1655,12 @@ bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_degamma);
kvfree(rgb_degamma);
} else if (trans == TRANSFER_FUNCTION_SRGB ||
trans == TRANSFER_FUNCTION_BT709) {
rgb_degamma = kzalloc(sizeof(*rgb_degamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_degamma = kvzalloc(sizeof(*rgb_degamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_degamma)
goto rgb_degamma_alloc_fail;
@@ -1670,7 +1674,7 @@ bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_degamma);
kvfree(rgb_degamma);
}
points->end_exponent = 0;
points->x_point_at_y1_red = 1;