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Commit 4a75aefe authored by Andres Rodriguez's avatar Andres Rodriguez Committed by Alex Deucher
Browse files

drm/amdgpu: add option for force enable multipipe policy for compute 



Useful for testing the effects of multipipe compute without recompiling.

Acked-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAndres Rodriguez <andresx7@gmail.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 0f7607d4

drivers/gpu/drm/amd/amdgpu/amdgpu.h

+1 −0
Original line number Diff line number Diff line
@@ -121,6 +121,7 @@ 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;

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

+4 −0
Original line number Diff line number Diff line
@@ -122,6 +122,7 @@ 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);
@@ -265,6 +266,9 @@ 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



#if defined(CONFIG_DRM_RADEON) || defined(CONFIG_DRM_RADEON_MODULE)

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c

+6 −0
Original line number Diff line number Diff line
@@ -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)