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buffers: improve buffer init performance

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Change-Id: Ib59a3c32af754a898ade17c42e60a88f48b797ff
Signed-off-by: Damjan Marion <damarion@cisco.com>
This commit is contained in:
Damjan Marion
2019-02-06 17:56:57 +01:00
committed by Florin Coras
parent b74fe32d54
commit 672ab69018
1 changed files with 14 additions and 17 deletions
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31
src/vlib/buffer.c
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@ -489,6 +489,7 @@ vlib_buffer_pool_create (vlib_main_t * vm, u8 index, char *name,
vlib_physmem_map_t *m = vlib_physmem_get_map (vm, physmem_map_index);
uword start = pointer_to_uword (m->base);
uword size = (uword) m->n_pages << m->log2_page_size;
uword i, j;
u32 alloc_size, n_alloc_per_page;;
vec_validate_aligned (bm->buffer_pools, index, CLIB_CACHE_LINE_BYTES);
@ -549,28 +550,24 @@ vlib_buffer_pool_create (vlib_main_t * vm, u8 index, char *name,
clib_spinlock_init (&bp->lock);
while (1)
{
u8 *p;
u32 bi;
for (j = 0; j < m->n_pages; j++)
for (i = 0; i < n_alloc_per_page; i++)
{
u8 *p;
u32 bi;
p = vlib_physmem_alloc_from_map (vm, bp->physmem_map_index, alloc_size,
CLIB_CACHE_LINE_BYTES);
p = m->base + (j << m->log2_page_size) + i * alloc_size;
p += bm->ext_hdr_size;
if (p == 0)
break;
vlib_buffer_copy_template ((vlib_buffer_t *) p, &bp->buffer_template);
p += bm->ext_hdr_size;
bi = vlib_get_buffer_index (vm, (vlib_buffer_t *) p);
vlib_buffer_copy_template ((vlib_buffer_t *) p, &bp->buffer_template);
vec_add1_aligned (bp->buffers, bi, CLIB_CACHE_LINE_BYTES);
vlib_get_buffer (vm, bi);
}
bi = vlib_get_buffer_index (vm, (vlib_buffer_t *) p);
vec_add1_aligned (bp->buffers, bi, CLIB_CACHE_LINE_BYTES);
vlib_get_buffer (vm, bi);
bp->n_buffers += 1;
}
bp->n_buffers = vec_len (bp->buffers);
return 0;
}