From e9578f2b3197d43d1f42409f092d1940c1f0f559 Mon Sep 17 00:00:00 2001 From: Andres Rodriguez Date: Tue, 26 Sep 2017 12:22:46 -0400 Subject: [PATCH 1081/4131] drm/amdgpu: add option for force enable multipipe policy for compute Useful for testing the effects of multipipe compute without recompiling. Acked-by: Felix Kuehling Signed-off-by: Andres Rodriguez Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 ++++ drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 6 ++++++ 3 files changed, 11 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 1fbfe98..fa3935b8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -125,6 +125,7 @@ extern int amdgpu_cntl_sb_buf_per_se; extern int amdgpu_param_buf_per_se; extern int amdgpu_job_hang_limit; extern int amdgpu_lbpw; +extern int amdgpu_compute_multipipe; #ifdef CONFIG_DRM_AMDGPU_SI extern int amdgpu_si_support; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index e587416..91b5638 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -124,6 +124,7 @@ int amdgpu_cntl_sb_buf_per_se = 0; int amdgpu_param_buf_per_se = 0; int amdgpu_job_hang_limit = 0; int amdgpu_lbpw = -1; +int amdgpu_compute_multipipe = -1; MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes"); module_param_named(vramlimit, amdgpu_vram_limit, int, 0600); @@ -273,6 +274,9 @@ module_param_named(job_hang_limit, amdgpu_job_hang_limit, int ,0444); MODULE_PARM_DESC(lbpw, "Load Balancing Per Watt (LBPW) support (1 = enable, 0 = disable, -1 = auto)"); module_param_named(lbpw, amdgpu_lbpw, int, 0444); +MODULE_PARM_DESC(compute_multipipe, "Force compute queues to be spread across pipes (1 = enable, 0 = disable, -1 = auto)"); +module_param_named(compute_multipipe, amdgpu_compute_multipipe, int, 0444); + #ifdef CONFIG_DRM_AMDGPU_SI int amdgpu_si_support = 1; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 3d76e76..48d94ae 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -111,6 +111,12 @@ void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se, unsigned max_s static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev) { + if (amdgpu_compute_multipipe != -1) { + DRM_INFO("amdgpu: forcing compute pipe policy %d\n", + amdgpu_compute_multipipe); + return amdgpu_compute_multipipe == 1; + } + /* FIXME: spreading the queues across pipes causes perf regressions * on POLARIS11 compute workloads */ if (adev->asic_type == CHIP_POLARIS11) -- 2.7.4