Re-instate UMA cached backend for 4K - 64K allocations. New consumers
like geli(4) uses malloc(9) to allocate temporary buffers that gets free'ed shortly, causing frequent TLB shootdown as observed in hwpmc supported flame graph. Discussed with: jeff, alfred MFC after: 1 week
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=269963
@ -120,7 +120,7 @@ static int kmemcount;
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#define KMEM_ZBASE 16
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#define KMEM_ZMASK (KMEM_ZBASE - 1)
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#define KMEM_ZMAX PAGE_SIZE
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#define KMEM_ZMAX 65536
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#define KMEM_ZSIZE (KMEM_ZMAX >> KMEM_ZSHIFT)
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static uint8_t kmemsize[KMEM_ZSIZE + 1];
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@ -151,21 +151,10 @@ struct {
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{1024, "1024", },
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{2048, "2048", },
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{4096, "4096", },
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#if PAGE_SIZE > 4096
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{8192, "8192", },
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#if PAGE_SIZE > 8192
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{16384, "16384", },
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#if PAGE_SIZE > 16384
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{32768, "32768", },
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#if PAGE_SIZE > 32768
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{65536, "65536", },
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#if PAGE_SIZE > 65536
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#error "Unsupported PAGE_SIZE"
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#endif /* 65536 */
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#endif /* 32768 */
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#endif /* 16384 */
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#endif /* 8192 */
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#endif /* 4096 */
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{0, NULL},
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};
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