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| author | Peter Zijlstra <peterz@infradead.org> | 2018-08-26 12:56:48 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2018-10-09 16:51:11 +0200 |
| commit | a31acd3ee8f7dbc0370bdf4a4bfef7a8c13c7542 (patch) | |
| tree | fe6035ec072385441ded002ba945960ba1ddc034 /arch/x86/mm/tlb.c | |
| parent | a5b966ae42a70b194b03eaa5eaea70d8b3790c40 (diff) | |
| download | linux-a31acd3ee8f7dbc0370bdf4a4bfef7a8c13c7542.tar.bz2 | |
x86/mm: Page size aware flush_tlb_mm_range()
Use the new tlb_get_unmap_shift() to determine the stride of the
INVLPG loop.
Cc: Nick Piggin <npiggin@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'arch/x86/mm/tlb.c')
| -rw-r--r-- | arch/x86/mm/tlb.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index e96b99eb800c..6aa195796dec 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -528,17 +528,16 @@ static void flush_tlb_func_common(const struct flush_tlb_info *f, f->new_tlb_gen == local_tlb_gen + 1 && f->new_tlb_gen == mm_tlb_gen) { /* Partial flush */ - unsigned long addr; - unsigned long nr_pages = (f->end - f->start) >> PAGE_SHIFT; + unsigned long nr_invalidate = (f->end - f->start) >> f->stride_shift; + unsigned long addr = f->start; - addr = f->start; while (addr < f->end) { __flush_tlb_one_user(addr); - addr += PAGE_SIZE; + addr += 1UL << f->stride_shift; } if (local) - count_vm_tlb_events(NR_TLB_LOCAL_FLUSH_ONE, nr_pages); - trace_tlb_flush(reason, nr_pages); + count_vm_tlb_events(NR_TLB_LOCAL_FLUSH_ONE, nr_invalidate); + trace_tlb_flush(reason, nr_invalidate); } else { /* Full flush. */ local_flush_tlb(); @@ -623,12 +622,13 @@ void native_flush_tlb_others(const struct cpumask *cpumask, static unsigned long tlb_single_page_flush_ceiling __read_mostly = 33; void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, - unsigned long end, unsigned long vmflag) + unsigned long end, unsigned int stride_shift) { int cpu; struct flush_tlb_info info __aligned(SMP_CACHE_BYTES) = { .mm = mm, + .stride_shift = stride_shift, }; cpu = get_cpu(); @@ -638,8 +638,7 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, /* Should we flush just the requested range? */ if ((end != TLB_FLUSH_ALL) && - !(vmflag & VM_HUGETLB) && - ((end - start) >> PAGE_SHIFT) <= tlb_single_page_flush_ceiling) { + ((end - start) >> stride_shift) <= tlb_single_page_flush_ceiling) { info.start = start; info.end = end; } else { |