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sys/vm: Add TSLOG to some functions

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The functions pbuf_init, kva_alloc, and keg_alloc_slab are significant
contributors to the kernel boot time when FreeBSD boots inside the
Firecracker VMM.  Instrument them so they show up on flamecharts.
This commit is contained in:
Colin Percival 2022-08-12 16:52:47 -07:00
parent b7bf3cb07f
commit b9fd884a8d
3 changed files with 9 additions and 0 deletions
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3
sys/vm/uma_core.c
View File

@ -1762,6 +1762,8 @@ keg_alloc_slab(uma_keg_t keg, uma_zone_t zone, int domain, int flags,
uint8_t sflags;
int i;
TSENTER();
KASSERT(domain >= 0 && domain < vm_ndomains,
("keg_alloc_slab: domain %d out of range", domain));
@ -1858,6 +1860,7 @@ keg_alloc_slab(uma_keg_t keg, uma_zone_t zone, int domain, int flags,
dom->ud_pages += keg->uk_ppera;
dom->ud_free_items += keg->uk_ipers;
TSEXIT();
return (slab);
fail:

2
sys/vm/vm_kern.c
View File

@ -148,9 +148,11 @@ kva_alloc(vm_size_t size)
{
vm_offset_t addr;
TSENTER();
size = round_page(size);
if (vmem_alloc(kernel_arena, size, M_BESTFIT | M_NOWAIT, &addr))
return (0);
TSEXIT();
return (addr);
}

4
sys/vm/vm_pager.c
View File

@ -495,6 +495,8 @@ pbuf_init(void *mem, int size, int flags)
{
struct buf *bp = mem;
TSENTER();
bp->b_kvabase = (void *)kva_alloc(ptoa(PBUF_PAGES));
if (bp->b_kvabase == NULL)
return (ENOMEM);
@ -504,6 +506,8 @@ pbuf_init(void *mem, int size, int flags)
bp->b_rcred = bp->b_wcred = NOCRED;
bp->b_xflags = 0;
TSEXIT();
return (0);
}