Thanks, I'll push this today after I get a RB/ACK/NAK on the last two cleanups
https://lists.freedesktop.org/archives/amd-gfx/2016-September/002039.html (note: I changed one of the dev_warn to dev_err to match the original message type) and https://lists.freedesktop.org/archives/amd-gfx/2016-September/002042.html Tom ________________________________ From: Christian König <deathsim...@vodafone.de> Sent: Wednesday, September 7, 2016 08:33 To: Tom St Denis; amd-gfx@lists.freedesktop.org Cc: StDenis, Tom Subject: Re: [PATCH] drm/amd/amdgpu: Remove double lock from gfx v6 Am 07.09.2016 um 14:07 schrieb Tom St Denis: > The function gfx_v6_0_get_cu_info() was taking the > grbm_idx_mutex which was then taken by a dependent > function gfx_v6_0_get_cu_active_bitmap(). > > This patch removes the select from the parent function > to avoid the double lock. > > Signed-off-by: Tom St Denis <tom.stde...@amd.com> Reviewed-by: Christian König <christian.koe...@amd.com> > --- > drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 4 ---- > 1 file changed, 4 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c > b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c > index a6b76170b9c5..a1484b8f7eb2 100644 > --- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c > +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c > @@ -3193,13 +3193,11 @@ static void gfx_v6_0_get_cu_info(struct amdgpu_device > *adev) > > memset(cu_info, 0, sizeof(*cu_info)); > > - mutex_lock(&adev->grbm_idx_mutex); > for (i = 0; i < adev->gfx.config.max_shader_engines; i++) { > for (j = 0; j < adev->gfx.config.max_sh_per_se; j++) { > mask = 1; > ao_bitmap = 0; > counter = 0; > - gfx_v6_0_select_se_sh(adev, i, j, 0xffffffff); > bitmap = gfx_v6_0_get_cu_active_bitmap(adev, i, j); > cu_info->bitmap[i][j] = bitmap; > > @@ -3215,8 +3213,6 @@ static void gfx_v6_0_get_cu_info(struct amdgpu_device > *adev) > ao_cu_mask |= (ao_bitmap << (i * 16 + j * 8)); > } > } > - gfx_v6_0_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff); > - mutex_unlock(&adev->grbm_idx_mutex); > > cu_info->number = active_cu_number; > cu_info->ao_cu_mask = ao_cu_mask;
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