Message ID | 20220621204632.3370049-38-Liam.Howlett@oracle.com (mailing list archive) |
---|---|
State | New |
Headers | show
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Introducing the Maple Tree
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diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index 60c829113299..2c64f55cf01f 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -280,22 +280,6 @@ void cxl_handle_fault(struct work_struct *fault_work) mmput(mm); } -static void cxl_prefault_one(struct cxl_context *ctx, u64 ea) -{ - struct mm_struct *mm; - - mm = get_mem_context(ctx); - if (mm == NULL) { - pr_devel("cxl_prefault_one unable to get mm %i\n", - pid_nr(ctx->pid)); - return; - } - - cxl_fault_segment(ctx, mm, ea); - - mmput(mm); -} - static u64 next_segment(u64 ea, u64 vsid) { if (vsid & SLB_VSID_B_1T) @@ -306,23 +290,16 @@ static u64 next_segment(u64 ea, u64 vsid) return ea + 1; } -static void cxl_prefault_vma(struct cxl_context *ctx) +static void cxl_prefault_vma(struct cxl_context *ctx, struct mm_struct *mm) { u64 ea, last_esid = 0; struct copro_slb slb; + VMA_ITERATOR(vmi, mm, 0); struct vm_area_struct *vma; int rc; - struct mm_struct *mm; - - mm = get_mem_context(ctx); - if (mm == NULL) { - pr_devel("cxl_prefault_vm unable to get mm %i\n", - pid_nr(ctx->pid)); - return; - } mmap_read_lock(mm); - for (vma = mm->mmap; vma; vma = vma->vm_next) { + for_each_vma(vmi, vma) { for (ea = vma->vm_start; ea < vma->vm_end; ea = next_segment(ea, slb.vsid)) { rc = copro_calculate_slb(mm, ea, &slb); @@ -337,20 +314,28 @@ static void cxl_prefault_vma(struct cxl_context *ctx) } } mmap_read_unlock(mm); - - mmput(mm); } void cxl_prefault(struct cxl_context *ctx, u64 wed) { + struct mm_struct *mm = get_mem_context(ctx); + + if (mm == NULL) { + pr_devel("cxl_prefault unable to get mm %i\n", + pid_nr(ctx->pid)); + return; + } + switch (ctx->afu->prefault_mode) { case CXL_PREFAULT_WED: - cxl_prefault_one(ctx, wed); + cxl_fault_segment(ctx, mm, wed); break; case CXL_PREFAULT_ALL: - cxl_prefault_vma(ctx); + cxl_prefault_vma(ctx, mm); break; default: break; } + + mmput(mm); }