diff options
| author | Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com> | 2023-09-14 22:26:10 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-10-05 01:36:17 +0300 |
| commit | 9b37d45d797e9441a415e17bf963423162d8f998 (patch) | |
| tree | 50aa9e36c4af7e58be3cfe5ae86d55954399af95 /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | |
| parent | 67318cb8434182ff4c3294dad6c3fbf5538aeb8e (diff) | |
| download | linux-9b37d45d797e9441a415e17bf963423162d8f998.tar.xz | |
drm/amdgpu: Rework KFD memory max limits
To allow bigger allocations specially on systems such as GFXIP 9.4.3
that use GTT memory for VRAM allocations, relax the limits to
maximize ROCm allocations.
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index 839abd8425da..59b4bef0c4d1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -44,6 +44,7 @@ * changes to accumulate */ #define AMDGPU_USERPTR_RESTORE_DELAY_MS 1 +#define AMDGPU_RESERVE_MEM_LIMIT (3UL << 29) /* * Align VRAM availability to 2MB to avoid fragmentation caused by 4K allocations in the tail 2MB @@ -117,11 +118,16 @@ void amdgpu_amdkfd_gpuvm_init_mem_limits(void) return; si_meminfo(&si); - mem = si.freeram - si.freehigh; + mem = si.totalram - si.totalhigh; mem *= si.mem_unit; spin_lock_init(&kfd_mem_limit.mem_limit_lock); - kfd_mem_limit.max_system_mem_limit = mem - (mem >> 4); + kfd_mem_limit.max_system_mem_limit = mem - (mem >> 6); + if (kfd_mem_limit.max_system_mem_limit < 2 * AMDGPU_RESERVE_MEM_LIMIT) + kfd_mem_limit.max_system_mem_limit >>= 1; + else + kfd_mem_limit.max_system_mem_limit -= AMDGPU_RESERVE_MEM_LIMIT; + kfd_mem_limit.max_ttm_mem_limit = ttm_tt_pages_limit() << PAGE_SHIFT; pr_debug("Kernel memory limit %lluM, TTM limit %lluM\n", (kfd_mem_limit.max_system_mem_limit >> 20), |