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vlib: remove old memcpy implementation

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Change-Id: I21f5abb00cf12da5c144da477badc38736be7a7d
Signed-off-by: Damjan Marion <damarion@cisco.com>
This commit is contained in:
Damjan Marion
2016-11-24 01:28:45 +01:00
committed by Ole Trøan
parent ece983dd45
commit a5e7c29d41
1 changed files with 1 additions and 63 deletions
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64
vlib/vlib/buffer.c
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@ -359,69 +359,7 @@ vlib_buffer_validate_alloc_free (vlib_main_t * vm,
is_free ? VLIB_BUFFER_KNOWN_FREE : VLIB_BUFFER_KNOWN_ALLOCATED);
}
}
#endif
/* Aligned copy routine. */
void
vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes)
{
vlib_copy_unit_t *dst = _dst;
vlib_copy_unit_t *src = _src;
/* Arguments must be naturally aligned. */
ASSERT (pointer_to_uword (dst) % sizeof (dst[0]) == 0);
ASSERT (pointer_to_uword (src) % sizeof (src[0]) == 0);
ASSERT (n_bytes % sizeof (dst[0]) == 0);
if (4 * sizeof (dst[0]) == CLIB_CACHE_LINE_BYTES)
{
CLIB_PREFETCH (dst + 0, 4 * sizeof (dst[0]), WRITE);
CLIB_PREFETCH (src + 0, 4 * sizeof (src[0]), READ);
while (n_bytes >= 4 * sizeof (dst[0]))
{
dst += 4;
src += 4;
n_bytes -= 4 * sizeof (dst[0]);
CLIB_PREFETCH (dst, 4 * sizeof (dst[0]), WRITE);
CLIB_PREFETCH (src, 4 * sizeof (src[0]), READ);
dst[-4] = src[-4];
dst[-3] = src[-3];
dst[-2] = src[-2];
dst[-1] = src[-1];
}
}
else if (8 * sizeof (dst[0]) == CLIB_CACHE_LINE_BYTES)
{
CLIB_PREFETCH (dst + 0, 8 * sizeof (dst[0]), WRITE);
CLIB_PREFETCH (src + 0, 8 * sizeof (src[0]), READ);
while (n_bytes >= 8 * sizeof (dst[0]))
{
dst += 8;
src += 8;
n_bytes -= 8 * sizeof (dst[0]);
CLIB_PREFETCH (dst, 8 * sizeof (dst[0]), WRITE);
CLIB_PREFETCH (src, 8 * sizeof (src[0]), READ);
dst[-8] = src[-8];
dst[-7] = src[-7];
dst[-6] = src[-6];
dst[-5] = src[-5];
dst[-4] = src[-4];
dst[-3] = src[-3];
dst[-2] = src[-2];
dst[-1] = src[-1];
}
}
else
/* Cache line size unknown: fall back to slow version. */ ;
while (n_bytes > 0)
{
*dst++ = *src++;
n_bytes -= 1 * sizeof (dst[0]);
}
}
#define BUFFERS_PER_COPY (sizeof (vlib_copy_unit_t) / sizeof (u32))
@ -495,7 +433,7 @@ merge_free_lists (vlib_buffer_free_list_t * dst,
{
vec_add2_aligned (dst->aligned_buffers, d, l,
/* align */ sizeof (vlib_copy_unit_t));
vlib_aligned_memcpy (d, src->aligned_buffers, l * sizeof (d[0]));
clib_memcpy (d, src->aligned_buffers, l * sizeof (d[0]));
vec_free (src->aligned_buffers);
}