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| author | delphij <delphij@FreeBSD.org> | 2014-08-14 05:13:24 +0000 |
|---|---|---|
| committer | delphij <delphij@FreeBSD.org> | 2014-08-14 05:13:24 +0000 |
| commit | ff6721bf36940d5c0580ad3a04689cd9d01ee3db (patch) | |
| tree | a6cc0f8fc3cf10592d6fe4011394e53292967469 /sys/kern/kern_malloc.c | |
| parent | 53369652fd9c456d33338f450a0c02cfdc1db689 (diff) | |
| download | FreeBSD-src-ff6721bf36940d5c0580ad3a04689cd9d01ee3db.zip FreeBSD-src-ff6721bf36940d5c0580ad3a04689cd9d01ee3db.tar.gz | |
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
Diffstat (limited to 'sys/kern/kern_malloc.c')
| -rw-r--r-- | sys/kern/kern_malloc.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/sys/kern/kern_malloc.c b/sys/kern/kern_malloc.c index 464303a..4e8a3bd 100644 --- a/sys/kern/kern_malloc.c +++ b/sys/kern/kern_malloc.c @@ -120,7 +120,7 @@ static int kmemcount; #define KMEM_ZBASE 16 #define KMEM_ZMASK (KMEM_ZBASE - 1) -#define KMEM_ZMAX PAGE_SIZE +#define KMEM_ZMAX 65536 #define KMEM_ZSIZE (KMEM_ZMAX >> KMEM_ZSHIFT) static uint8_t kmemsize[KMEM_ZSIZE + 1]; @@ -151,21 +151,10 @@ struct { {1024, "1024", }, {2048, "2048", }, {4096, "4096", }, -#if PAGE_SIZE > 4096 {8192, "8192", }, -#if PAGE_SIZE > 8192 {16384, "16384", }, -#if PAGE_SIZE > 16384 {32768, "32768", }, -#if PAGE_SIZE > 32768 {65536, "65536", }, -#if PAGE_SIZE > 65536 -#error "Unsupported PAGE_SIZE" -#endif /* 65536 */ -#endif /* 32768 */ -#endif /* 16384 */ -#endif /* 8192 */ -#endif /* 4096 */ {0, NULL}, }; |
