diff options
Diffstat (limited to 'common/recipes-kernel/linux/files/0297-drm-amdgpu-gfx7-LOC-reduction-in-gfx_v7_0_setup_rb.patch')
| -rw-r--r-- | common/recipes-kernel/linux/files/0297-drm-amdgpu-gfx7-LOC-reduction-in-gfx_v7_0_setup_rb.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0297-drm-amdgpu-gfx7-LOC-reduction-in-gfx_v7_0_setup_rb.patch b/common/recipes-kernel/linux/files/0297-drm-amdgpu-gfx7-LOC-reduction-in-gfx_v7_0_setup_rb.patch new file mode 100644 index 00000000..31219bcd --- /dev/null +++ b/common/recipes-kernel/linux/files/0297-drm-amdgpu-gfx7-LOC-reduction-in-gfx_v7_0_setup_rb.patch @@ -0,0 +1,43 @@ +From 57ff151880cced48d72bcf4d5334864e6a4bc0a7 Mon Sep 17 00:00:00 2001 +From: Tom St Denis <tom.stdenis@amd.com> +Date: Mon, 8 Feb 2016 12:34:19 -0500 +Subject: [PATCH 0297/1110] drm/amdgpu/gfx7: LOC reduction in gfx_v7_0_setup_rb + +Reduce for loop with bitmask to simple complement and mask + +Signed-off-by: Tom St Denis <tom.stdenis@amd.com> +Reviewed-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 9 ++------- + 1 file changed, 2 insertions(+), 7 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +index adaa3f8..940dc0b 100644 +--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +@@ -1648,7 +1648,7 @@ static void gfx_v7_0_setup_rb(struct amdgpu_device *adev, + u32 max_rb_num_per_se) + { + int i, j; +- u32 data, mask; ++ u32 data; + u32 disabled_rbs = 0; + u32 enabled_rbs = 0; + +@@ -1666,12 +1666,7 @@ static void gfx_v7_0_setup_rb(struct amdgpu_device *adev, + gfx_v7_0_select_se_sh(adev, 0xffffffff, 0xffffffff); + mutex_unlock(&adev->grbm_idx_mutex); + +- mask = 1; +- for (i = 0; i < max_rb_num_per_se * se_num; i++) { +- if (!(disabled_rbs & mask)) +- enabled_rbs |= mask; +- mask <<= 1; +- } ++ enabled_rbs = (~disabled_rbs) & ((1UL<<(max_rb_num_per_se*se_num))-1); + + adev->gfx.config.backend_enable_mask = enabled_rbs; + +-- +2.7.4 + |