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Zhu Lingshan
0ddd2ae586
ttm page fault handler ttm_bo_vm_fault_reserved() maps TTM_BO_VM_NUM_PREFAULT more pages beforehand due to the principle of locality. However, on some platform the page faults are more costly, this patch intends to increase the number of ttm pre-fault to relieve the number of page faults. When multiple levels of page table is supported, the new default value would be the PMD size, similar to huge page. Signed-off-by: Zhu Lingshan <[email protected]> Reported-and-tested-by: Li Jingxiang <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] Reviewed-by: Christian König <[email protected]> Signed-off-by: Christian König <[email protected]>