diff options
Diffstat (limited to 'src/svm')
| -rw-r--r-- | src/svm/fifo_segment.c | 99 |
1 files changed, 62 insertions, 37 deletions
diff --git a/src/svm/fifo_segment.c b/src/svm/fifo_segment.c index d6fcdad9e17..dbfa153b55e 100644 --- a/src/svm/fifo_segment.c +++ b/src/svm/fifo_segment.c @@ -605,8 +605,6 @@ fs_try_alloc_fifo (fifo_segment_header_t * fsh, fifo_segment_slice_t * fss, 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 (min_size); clib_spinlock_lock (&fss->chunk_lock); @@ -620,18 +618,28 @@ fs_try_alloc_fifo (fifo_segment_header_t * fsh, fifo_segment_slice_t * fss, } } - fsh_check_mem (fsh); + fifo_sz = sizeof (svm_fifo_t) + sizeof (svm_fifo_chunk_t); + fifo_sz += 1 << max_log2 (min_size); n_free_bytes = fsh_n_free_bytes (fsh); + if (fifo_sz * FIFO_SEGMENT_ALLOC_BATCH_SIZE < n_free_bytes) { - if (fs_try_alloc_fifo_batch (fsh, fss, fl_index, - FIFO_SEGMENT_ALLOC_BATCH_SIZE)) - goto done; - - 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 (!fs_try_alloc_fifo_batch (fsh, fss, fl_index, + FIFO_SEGMENT_ALLOC_BATCH_SIZE)) + { + 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; + } + } + else + { + fsh_check_mem (fsh); + n_free_bytes = fsh_n_free_bytes (fsh); + } } if (fifo_sz <= n_free_bytes) { @@ -643,6 +651,7 @@ fs_try_alloc_fifo (fifo_segment_header_t * fsh, fifo_segment_slice_t * fss, fsh_free_bytes_sub (fsh, fifo_sz); goto done; } + fsh_check_mem (fsh); } /* All failed, try to allocate min of data bytes and fifo sz */ fifo_sz = clib_min (fifo_sz, data_bytes); @@ -665,9 +674,7 @@ fsh_alloc_chunk (fifo_segment_header_t * fsh, u32 slice_index, u32 chunk_size) { fifo_segment_slice_t *fss; 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); @@ -683,37 +690,55 @@ fsh_alloc_chunk (fifo_segment_header_t * fsh, u32 slice_index, u32 chunk_size) 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))) + else { - fsh_check_mem (fsh); + void *oldheap; + uword n_free; + u32 batch; chunk_size = fs_freelist_index_to_size (fl_index); - if (n_free < chunk_size) - goto done; + n_free = fsh_n_free_bytes (fsh); - oldheap = ssvm_push_heap (fsh->ssvm_sh); - c = svm_fifo_chunk_alloc (chunk_size); - ssvm_pop_heap (oldheap); + if (chunk_size <= n_free) + { + oldheap = ssvm_push_heap (fsh->ssvm_sh); + c = svm_fifo_chunk_alloc (chunk_size); + ssvm_pop_heap (oldheap); - if (!c) - goto done; + if (c) + { + fsh_free_bytes_sub (fsh, chunk_size + sizeof (*c)); + goto done; + } - fsh_free_bytes_sub (fsh, chunk_size + sizeof (*c)); - } - else if (chunk_size <= fss->n_fl_chunk_bytes) - { - 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); + n_free = fsh_n_free_bytes (fsh); + } + if (chunk_size <= fss->n_fl_chunk_bytes) + { + c = fs_try_alloc_multi_chunk (fsh, fss, chunk_size); + if (c) + goto done; + batch = n_free / FIFO_SEGMENT_MIN_FIFO_SIZE; + if (!batch || fsh_try_alloc_chunk_batch (fsh, fss, 0, batch)) + { + fsh_check_mem (fsh); + goto done; + } + } + if (chunk_size <= fss->n_fl_chunk_bytes + n_free) + { + u32 min_size = FIFO_SEGMENT_MIN_FIFO_SIZE; - 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); + 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)) + { + fsh_check_mem (fsh); + goto done; + } + c = fs_try_alloc_multi_chunk (fsh, fss, chunk_size); + } } done: |