}
static svm_fifo_t *
-fs_try_alloc_fifo_freelist (fifo_segment_slice_t * fss,
- u32 fl_index, u32 data_bytes)
+fs_try_alloc_fifo_freelist (fifo_segment_slice_t * fss, u32 fl_index)
{
svm_fifo_chunk_t *c;
svm_fifo_t *f;
return f;
}
+svm_fifo_chunk_t *
+fs_try_alloc_multi_chunk (fifo_segment_header_t * fsh,
+ fifo_segment_slice_t * fss, u32 data_bytes)
+{
+ u32 fl_index, fl_size, n_alloc = 0, req_bytes = data_bytes;
+ svm_fifo_chunk_t *c, *first = 0, *next;
+
+ fl_index = fs_freelist_for_size (req_bytes);
+ if (fl_index > 0)
+ fl_index -= 1;
+
+ fl_size = fs_freelist_index_to_size (fl_index);
+
+ while (req_bytes)
+ {
+ c = fss->free_chunks[fl_index];
+ if (c)
+ {
+ fss->free_chunks[fl_index] = c->next;
+ c->next = first;
+ first = c;
+ n_alloc += fl_size;
+ req_bytes -= clib_min (fl_size, req_bytes);
+ }
+ else
+ {
+ /* Failed to allocate with smaller chunks */
+ if (fl_index == 0)
+ {
+ /* free all chunks if any allocated */
+ c = first;
+ while (c)
+ {
+ fl_index = fs_freelist_for_size (c->length);
+ fl_size = fs_freelist_index_to_size (fl_index);
+ next = c->next;
+ c->next = fss->free_chunks[fl_index];
+ fss->free_chunks[fl_index] = c;
+ fss->n_fl_chunk_bytes += fl_size;
+ c = next;
+ }
+ n_alloc = 0;
+ first = 0;
+ fl_index = fs_freelist_for_size (data_bytes);
+ if (fss->free_chunks[fl_index + 1])
+ {
+ fl_index += 1;
+ fl_size = fs_freelist_index_to_size (fl_index);
+ continue;
+ }
+
+ return 0;
+ }
+ fl_index -= 1;
+ fl_size = fl_size >> 1;
+ }
+ }
+
+ fss->n_fl_chunk_bytes -= n_alloc;
+ fsh_cached_bytes_sub (fsh, n_alloc);
+ return first;
+}
+
static svm_fifo_t *
fs_try_alloc_fifo_freelist_multi_chunk (fifo_segment_header_t * fsh,
fifo_segment_slice_t * fss,
return f;
}
+static int
+fsh_try_alloc_chunk_batch (fifo_segment_header_t * fsh,
+ fifo_segment_slice_t * fss,
+ u32 fl_index, u32 batch_size)
+{
+ u32 rounded_data_size;
+ svm_fifo_chunk_t *c;
+ void *oldheap;
+ uword size;
+ u8 *cmem;
+ int i;
+
+ rounded_data_size = fs_freelist_index_to_size (fl_index);
+ size = (uword) (sizeof (*c) + rounded_data_size) * batch_size;
+
+ oldheap = ssvm_push_heap (fsh->ssvm_sh);
+ cmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
+ 0 /* align_offset */ ,
+ 0 /* os_out_of_memory */ );
+ ssvm_pop_heap (oldheap);
+
+ /* Out of space.. */
+ if (cmem == 0)
+ return -1;
+
+ /* Carve fifo + chunk space */
+ for (i = 0; i < batch_size; i++)
+ {
+ c = (svm_fifo_chunk_t *) cmem;
+ c->start_byte = 0;
+ c->length = rounded_data_size;
+ c->enq_rb_index = RBTREE_TNIL_INDEX;
+ c->deq_rb_index = RBTREE_TNIL_INDEX;
+ c->next = fss->free_chunks[fl_index];
+ fss->free_chunks[fl_index] = c;
+ cmem += sizeof (*c) + rounded_data_size;
+ }
+
+ fss->n_fl_chunk_bytes += batch_size * rounded_data_size;
+ fsh_cached_bytes_add (fsh, batch_size * rounded_data_size);
+ fsh_free_bytes_sub (fsh, size);
+
+ return 0;
+}
+
static int
fs_try_alloc_fifo_batch (fifo_segment_header_t * fsh,
fifo_segment_slice_t * fss,
u32 fifo_sz, fl_index;
svm_fifo_t *f = 0;
uword n_free_bytes;
+ u32 min_size;
- fl_index = fs_freelist_for_size (data_bytes);
+ min_size = clib_max ((fsh->pct_first_alloc * data_bytes) / 100, 4096);
+ fl_index = fs_freelist_for_size (min_size);
fifo_sz = sizeof (svm_fifo_t) + sizeof (svm_fifo_chunk_t);
- fifo_sz += 1 << max_log2 (data_bytes);
+ fifo_sz += 1 << max_log2 (min_size);
if (fss->free_fifos && fss->free_chunks[fl_index])
{
- f = fs_try_alloc_fifo_freelist (fss, fl_index, data_bytes);
+ f = fs_try_alloc_fifo_freelist (fss, fl_index);
if (f)
{
fsh_cached_bytes_sub (fsh, fs_freelist_index_to_size (fl_index));
FIFO_SEGMENT_ALLOC_BATCH_SIZE))
goto done;
- f = fs_try_alloc_fifo_freelist (fss, fl_index, data_bytes);
+ f = fs_try_alloc_fifo_freelist (fss, fl_index);
if (f)
fsh_cached_bytes_sub (fsh, fs_freelist_index_to_size (fl_index));
goto done;
if (fifo_sz <= n_free_bytes)
{
void *oldheap = ssvm_push_heap (fsh->ssvm_sh);
- f = svm_fifo_alloc (data_bytes);
+ f = svm_fifo_alloc (min_size);
ssvm_pop_heap (oldheap);
if (f)
{
svm_fifo_chunk_t *c;
void *oldheap;
int fl_index;
+ uword n_free;
fl_index = fs_freelist_for_size (chunk_size);
fss = fsh_slice_get (fsh, slice_index);
clib_spinlock_lock (&fss->chunk_lock);
+
c = fss->free_chunks[fl_index];
- if (!c)
+ if (c)
+ {
+ fss->free_chunks[fl_index] = c->next;
+ c->next = 0;
+ fss->n_fl_chunk_bytes -= fs_freelist_index_to_size (fl_index);
+ fsh_cached_bytes_sub (fsh, fs_freelist_index_to_size (fl_index));
+ }
+ else if (chunk_size <= (n_free = fsh_n_free_bytes (fsh)))
{
fsh_check_mem (fsh);
+
chunk_size = fs_freelist_index_to_size (fl_index);
- if (fsh_n_free_bytes (fsh) < chunk_size)
+ if (n_free < chunk_size)
goto done;
oldheap = ssvm_push_heap (fsh->ssvm_sh);
fsh_free_bytes_sub (fsh, chunk_size + sizeof (*c));
}
- else
+ else if (chunk_size <= fss->n_fl_chunk_bytes)
{
- fss->free_chunks[fl_index] = c->next;
- c->next = 0;
- fss->n_fl_chunk_bytes -= fs_freelist_index_to_size (fl_index);
- fsh_cached_bytes_sub (fsh, fs_freelist_index_to_size (fl_index));
+ c = fs_try_alloc_multi_chunk (fsh, fss, chunk_size);
+ }
+ else if (chunk_size <= fss->n_fl_chunk_bytes + n_free)
+ {
+ u32 min_size = FIFO_SEGMENT_MIN_FIFO_SIZE;
+ u32 batch;
+
+ fsh_check_mem (fsh);
+ batch = (chunk_size - fss->n_fl_chunk_bytes) / min_size;
+ batch = clib_min (batch + 1, n_free / min_size);
+ if (!fsh_try_alloc_chunk_batch (fsh, fss, 0, batch))
+ c = fs_try_alloc_multi_chunk (fsh, fss, chunk_size);
}
done:
static void
fsh_slice_collect_chunks (fifo_segment_header_t * fsh,
- fifo_segment_slice_t * fss, svm_fifo_chunk_t * cur)
+ fifo_segment_slice_t * fss, svm_fifo_chunk_t * c)
{
svm_fifo_chunk_t *next;
int fl_index;
clib_spinlock_lock (&fss->chunk_lock);
- while (cur)
+ while (c)
{
- next = cur->next;
- fl_index = fs_freelist_for_size (cur->length);
- cur->next = fss->free_chunks[fl_index];
- cur->enq_rb_index = RBTREE_TNIL_INDEX;
- cur->deq_rb_index = RBTREE_TNIL_INDEX;
- fss->free_chunks[fl_index] = cur;
+ next = c->next;
+ fl_index = fs_freelist_for_size (c->length);
+ c->next = fss->free_chunks[fl_index];
+ c->enq_rb_index = RBTREE_TNIL_INDEX;
+ c->deq_rb_index = RBTREE_TNIL_INDEX;
+ fss->free_chunks[fl_index] = c;
n_collect += fs_freelist_index_to_size (fl_index);
- cur = next;
+ c = next;
}
fss->n_fl_chunk_bytes += n_collect;
void
fsh_collect_chunks (fifo_segment_header_t * fsh, u32 slice_index,
- svm_fifo_chunk_t * cur)
+ svm_fifo_chunk_t * c)
{
fifo_segment_slice_t *fss;
fss = fsh_slice_get (fsh, slice_index);
- fsh_slice_collect_chunks (fsh, fss, cur);
+ fsh_slice_collect_chunks (fsh, fss, c);
}
/**
Code Review / vpp.git / blobdiff