#include <svm/fifo_segment.h>
+static inline fifo_segment_slice_t *
+fsh_slice_get (fifo_segment_header_t * fsh, u32 slice_index)
+{
+ return &fsh->slices[slice_index];
+}
+
+static char *fifo_segment_mem_status_strings[] = {
+#define _(sym,str) str,
+ foreach_segment_mem_status
+#undef _
+};
+
/**
* Fifo segment free space
*
* @param fs fifo segment
* @return number of free bytes
*/
-static u32
-fs_free_space (fifo_segment_t * fs)
+static uword
+fsh_free_space (fifo_segment_header_t * fsh)
{
struct dlmallinfo dlminfo;
- dlminfo = mspace_mallinfo (fs->ssvm.sh->heap);
+ dlminfo = mspace_mallinfo (fsh->ssvm_sh->heap);
return dlminfo.fordblks;
}
static inline uword
fsh_n_free_bytes (fifo_segment_header_t * fsh)
{
- return clib_atomic_load_relax_n (&fsh->n_free_bytes);
+ uword n_free = clib_atomic_load_relax_n (&fsh->n_free_bytes);
+ return n_free > fsh->n_reserved_bytes ? n_free - fsh->n_reserved_bytes : 0;
}
-static inline fifo_segment_slice_t *
-fsh_slice_get (fifo_segment_header_t * fsh, u32 slice_index)
+static inline void
+fsh_update_free_bytes (fifo_segment_header_t * fsh)
{
- return &fsh->slices[slice_index];
+ clib_atomic_store_rel_n (&fsh->n_free_bytes, fsh_free_space (fsh));
+}
+
+static inline void
+fsh_cached_bytes_add (fifo_segment_header_t * fsh, int size)
+{
+ clib_atomic_fetch_add_rel (&fsh->n_cached_bytes, size);
+}
+
+static inline void
+fsh_cached_bytes_sub (fifo_segment_header_t * fsh, int size)
+{
+ clib_atomic_fetch_sub_rel (&fsh->n_cached_bytes, size);
+}
+
+static inline uword
+fsh_n_cached_bytes (fifo_segment_header_t * fsh)
+{
+ uword n_cached = clib_atomic_load_relax_n (&fsh->n_cached_bytes);
+ return n_cached;
}
static inline void
clib_atomic_fetch_add_rel (&fsh->n_active_fifos, inc);
}
+static inline u32
+fsh_n_active_fifos (fifo_segment_header_t * fsh)
+{
+ return clib_atomic_load_relax_n (&fsh->n_active_fifos);
+}
+
+static inline uword
+fsh_virtual_mem (fifo_segment_header_t * fsh)
+{
+ fifo_segment_slice_t *fss;
+ uword total_vm = 0;
+ int i;
+
+ for (i = 0; i < fsh->n_slices; i++)
+ {
+ fss = fsh_slice_get (fsh, i);
+ total_vm += clib_atomic_load_relax_n (&fss->virtual_mem);
+ }
+ return total_vm;
+}
+
+void
+fsh_virtual_mem_update (fifo_segment_header_t * fsh, u32 slice_index,
+ int n_bytes)
+{
+ fifo_segment_slice_t *fss = fsh_slice_get (fsh, slice_index);
+ fss->virtual_mem += n_bytes;
+}
+
+static void
+fsh_check_mem (fifo_segment_header_t * fsh)
+{
+ uword thresh;
+
+ if (fsh->flags & FIFO_SEGMENT_F_MEM_LIMIT)
+ return;
+
+ thresh = clib_max (0.01 * fsh->ssvm_sh->ssvm_size,
+ 2 * fsh->n_reserved_bytes);
+ if (fsh->n_free_bytes > thresh)
+ return;
+
+ fsh->flags |= FIFO_SEGMENT_F_MEM_LIMIT;
+ fsh_update_free_bytes (fsh);
+}
+
/**
* Initialize fifo segment shared header
*/
fsh->ssvm_sh = fs->ssvm.sh;
fsh->n_slices = fs->n_slices;
- max_fifo = clib_min ((fs_free_space (fs) - 4096) / 2,
+ max_fifo = clib_min ((fsh_free_space (fsh) - 4096) / 2,
FIFO_SEGMENT_MAX_FIFO_SIZE);
fsh->max_log2_chunk_size = max_log2 (max_fifo);
{
fss = fsh_slice_get (fsh, i);
vec_validate_init_empty (fss->free_chunks, max_chunk_sz, 0);
+ vec_validate_init_empty (fss->num_chunks, max_chunk_sz, 0);
+ clib_spinlock_init (&fss->chunk_lock);
}
ssvm_pop_heap (oldheap);
- fsh->n_free_bytes = fs_free_space (fs);
+ fsh->n_free_bytes = fsh_free_space (fsh);
+ fsh->n_cached_bytes = 0;
+ fsh->n_reserved_bytes = clib_min (0.01 * fsh->n_free_bytes, 256 << 10);
sh->ready = 1;
return (0);
}
static inline u32
fs_freelist_for_size (u32 size)
{
+ if (PREDICT_FALSE (size < FIFO_SEGMENT_MIN_FIFO_SIZE))
+ return 0;
return max_log2 (size) - FIFO_SEGMENT_MIN_LOG2_FIFO_SIZE;
}
* with a smaller FIFO.
*/
return size >= FIFO_SEGMENT_MIN_FIFO_SIZE
- && size <= (1 << fsh->max_log2_chunk_size);
+ && size <= (1ULL << fsh->max_log2_chunk_size);
}
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;
fss->free_fifos = f->next;
fss->free_chunks[fl_index] = c->next;
- c->next = c;
+ c->next = 0;
c->start_byte = 0;
- c->length = data_bytes;
memset (f, 0, sizeof (*f));
f->start_chunk = c;
f->end_chunk = c;
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,
u32 data_bytes)
{
- svm_fifo_chunk_t *c, *first = 0, *last = 0;
+ svm_fifo_chunk_t *c, *first = 0, *last = 0, *next;
u32 fl_index, fl_size, n_alloc = 0;
svm_fifo_t *f;
fss->free_fifos = f->next;
}
- fl_index = fs_freelist_for_size (data_bytes) - 1;
+ fl_index = fs_freelist_for_size (data_bytes);
+ if (fl_index > 0)
+ fl_index -= 1;
+
fl_size = fs_freelist_index_to_size (fl_index);
while (data_bytes)
c->next = first;
first = c;
n_alloc += fl_size;
- c->length = clib_min (fl_size, data_bytes);
- data_bytes -= c->length;
+ data_bytes -= clib_min (fl_size, data_bytes);
}
else
{
- ASSERT (fl_index > 0);
+ /* 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;
+ n_alloc -= fl_size;
+ data_bytes += fl_size;
+ c = next;
+ }
+ first = last = 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;
+ }
+
+ f->next = fss->free_fifos;
+ fss->free_fifos = f;
+ return 0;
+ }
fl_index -= 1;
fl_size = fl_size >> 1;
}
}
+
f->start_chunk = first;
f->end_chunk = last;
- last->next = first;
fss->n_fl_chunk_bytes -= n_alloc;
+ fsh_cached_bytes_sub (fsh, n_alloc);
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->num_chunks[fl_index] += batch_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 fl_index, u32 batch_size)
{
- u32 size, hdrs, rounded_data_size;
+ u32 hdrs, rounded_data_size;
svm_fifo_chunk_t *c;
svm_fifo_t *f;
void *oldheap;
+ uword size;
u8 *fmem;
int i;
rounded_data_size = fs_freelist_index_to_size (fl_index);
hdrs = sizeof (*f) + sizeof (*c);
- size = (hdrs + rounded_data_size) * batch_size;
+ size = (uword) (hdrs + rounded_data_size) * batch_size;
oldheap = ssvm_push_heap (fsh->ssvm_sh);
fmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
c = (svm_fifo_chunk_t *) (fmem + sizeof (*f));
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;
fmem += hdrs + rounded_data_size;
}
+ fss->num_chunks[fl_index] += batch_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;
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);
- fifo_sz = sizeof (svm_fifo_t) + sizeof (svm_fifo_chunk_t);
- fifo_sz += 1 << max_log2 (data_bytes);
+ min_size = clib_max ((fsh->pct_first_alloc * data_bytes) / 100, 4096);
+ fl_index = fs_freelist_for_size (min_size);
+
+ clib_spinlock_lock (&fss->chunk_lock);
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)
- goto done;
+ {
+ fsh_cached_bytes_sub (fsh, fs_freelist_index_to_size (fl_index));
+ goto done;
+ }
}
+
+ 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, data_bytes);
- 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)
{
void *oldheap = ssvm_push_heap (fsh->ssvm_sh);
- f = svm_fifo_create (data_bytes);
+ f = svm_fifo_alloc (min_size);
ssvm_pop_heap (oldheap);
if (f)
{
+ clib_atomic_fetch_add_rel (&fss->num_chunks[fl_index], 1);
fsh_free_bytes_sub (fsh, fifo_sz);
goto done;
}
+ fsh_check_mem (fsh);
}
- if (data_bytes <= fss->n_fl_chunk_bytes)
- f = fs_try_alloc_fifo_freelist_multi_chunk (fsh, fss, data_bytes);
+ /* All failed, try to allocate min of data bytes and fifo sz */
+ fifo_sz = clib_min (fifo_sz, data_bytes);
+ if (fifo_sz <= fss->n_fl_chunk_bytes)
+ f = fs_try_alloc_fifo_freelist_multi_chunk (fsh, fss, fifo_sz);
done:
+ clib_spinlock_unlock (&fss->chunk_lock);
+ if (f)
+ {
+ f->size = data_bytes;
+ f->fs_hdr = fsh;
+ }
return f;
}
+svm_fifo_chunk_t *
+fsh_alloc_chunk (fifo_segment_header_t * fsh, u32 slice_index, u32 chunk_size)
+{
+ fifo_segment_slice_t *fss;
+ svm_fifo_chunk_t *c;
+ int fl_index;
+
+ 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)
+ {
+ 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
+ {
+ void *oldheap;
+ uword n_free;
+ u32 batch;
+
+ chunk_size = fs_freelist_index_to_size (fl_index);
+ n_free = fsh_n_free_bytes (fsh);
+
+ 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)
+ {
+ clib_atomic_fetch_add_rel (&fss->num_chunks[fl_index], 1);
+ fsh_free_bytes_sub (fsh, chunk_size + sizeof (*c));
+ goto done;
+ }
+
+ 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;
+
+ 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:
+
+ clib_spinlock_unlock (&fss->chunk_lock);
+
+ return c;
+}
+
+static void
+fsh_slice_collect_chunks (fifo_segment_header_t * fsh,
+ fifo_segment_slice_t * fss, svm_fifo_chunk_t * c)
+{
+ svm_fifo_chunk_t *next;
+ int fl_index;
+ u32 n_collect = 0;
+
+ clib_spinlock_lock (&fss->chunk_lock);
+
+ while (c)
+ {
+ 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);
+ c = next;
+ }
+
+ fss->n_fl_chunk_bytes += n_collect;
+ fsh_cached_bytes_add (fsh, n_collect);
+
+ clib_spinlock_unlock (&fss->chunk_lock);
+}
+
+void
+fsh_collect_chunks (fifo_segment_header_t * fsh, u32 slice_index,
+ svm_fifo_chunk_t * c)
+{
+ fifo_segment_slice_t *fss;
+ fss = fsh_slice_get (fsh, slice_index);
+ fsh_slice_collect_chunks (fsh, fss, c);
+}
+
+static inline void
+fss_fifo_add_active_list (fifo_segment_slice_t * fss, svm_fifo_t * f)
+{
+ if (fss->fifos)
+ {
+ fss->fifos->prev = f;
+ f->next = fss->fifos;
+ }
+ fss->fifos = f;
+}
+
+static inline void
+fss_fifo_del_active_list (fifo_segment_slice_t * fss, svm_fifo_t * f)
+{
+ if (f->flags & SVM_FIFO_F_LL_TRACKED)
+ {
+ if (f->prev)
+ f->prev->next = f->next;
+ else
+ fss->fifos = f->next;
+ if (f->next)
+ f->next->prev = f->prev;
+ }
+}
+
/**
* Allocate fifo in fifo segment
*/
f->slice_index = slice_index;
- /* (re)initialize the fifo, as in svm_fifo_create */
svm_fifo_init (f, data_bytes);
- /* Initialize chunks and rbtree for multi-chunk fifos */
- if (f->start_chunk->next != f->start_chunk)
- {
- void *oldheap = ssvm_push_heap (fsh->ssvm_sh);
- svm_fifo_init_chunks (f);
- ssvm_pop_heap (oldheap);
- }
-
/* If rx fifo type add to active fifos list. When cleaning up segment,
* we need a list of active sessions that should be disconnected. Since
* both rx and tx fifos keep pointers to the session, it's enough to track
* only one. */
if (ftype == FIFO_SEGMENT_RX_FIFO)
{
- if (fss->fifos)
- {
- fss->fifos->prev = f;
- f->next = fss->fifos;
- }
- fss->fifos = f;
+ fss_fifo_add_active_list (fss, f);
f->flags |= SVM_FIFO_F_LL_TRACKED;
+
+ svm_fifo_init_ooo_lookup (f, 0 /* ooo enq */ );
+ }
+ else
+ {
+ svm_fifo_init_ooo_lookup (f, 1 /* ooo deq */ );
}
+
fsh_active_fifos_update (fsh, 1);
+ fss->virtual_mem += svm_fifo_size (f);
done:
return (f);
fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f)
{
fifo_segment_header_t *fsh = fs->h;
- svm_fifo_chunk_t *cur, *next;
fifo_segment_slice_t *fss;
- void *oldheap;
- int fl_index;
ASSERT (f->refcnt > 0);
/* Remove from active list. Only rx fifos are tracked */
if (f->flags & SVM_FIFO_F_LL_TRACKED)
{
- if (f->prev)
- f->prev->next = f->next;
- else
- fss->fifos = f->next;
- if (f->next)
- f->next->prev = f->prev;
+ fss_fifo_del_active_list (fss, f);
f->flags &= ~SVM_FIFO_F_LL_TRACKED;
}
- /* Add to free list */
- f->next = fss->free_fifos;
- f->prev = 0;
- fss->free_fifos = f;
-
/* Free fifo chunks */
- cur = f->start_chunk;
- do
- {
- next = cur->next;
- fl_index = fs_freelist_for_size (cur->length);
- ASSERT (fl_index < vec_len (fss->free_chunks));
- cur->next = fss->free_chunks[fl_index];
- fss->free_chunks[fl_index] = cur;
- fss->n_fl_chunk_bytes += fs_freelist_index_to_size (fl_index);
- cur = next;
- }
- while (cur != f->start_chunk);
+ fsh_slice_collect_chunks (fsh, fss, f->start_chunk);
- f->start_chunk = f->end_chunk = f->new_chunks = 0;
+ f->start_chunk = f->end_chunk = 0;
f->head_chunk = f->tail_chunk = f->ooo_enq = f->ooo_deq = 0;
- oldheap = ssvm_push_heap (fsh->ssvm_sh);
- svm_fifo_free_chunk_lookup (f);
- ssvm_pop_heap (oldheap);
-
/* not allocated on segment heap */
+ svm_fifo_free_chunk_lookup (f);
svm_fifo_free_ooo_data (f);
if (CLIB_DEBUG)
f->master_thread_index = ~0;
}
+ fss->virtual_mem -= svm_fifo_size (f);
+
+ /* Add to free list */
+ f->next = fss->free_fifos;
+ f->prev = 0;
+ fss->free_fifos = f;
+
fsh_active_fifos_update (fsh, -1);
}
+void
+fifo_segment_detach_fifo (fifo_segment_t * fs, svm_fifo_t * f)
+{
+ fifo_segment_slice_t *fss;
+ svm_fifo_chunk_t *c;
+ u32 fl_index;
+
+ ASSERT (f->refcnt == 1);
+
+ fss = fsh_slice_get (fs->h, f->slice_index);
+ fss->virtual_mem -= svm_fifo_size (f);
+ if (f->flags & SVM_FIFO_F_LL_TRACKED)
+ fss_fifo_del_active_list (fss, f);
+
+ c = f->start_chunk;
+ while (c)
+ {
+ fl_index = fs_freelist_for_size (c->length);
+ clib_atomic_fetch_sub_rel (&fss->num_chunks[fl_index], 1);
+ c = c->next;
+ }
+}
+
+void
+fifo_segment_attach_fifo (fifo_segment_t * fs, svm_fifo_t * f,
+ u32 slice_index)
+{
+ fifo_segment_slice_t *fss;
+ svm_fifo_chunk_t *c;
+ u32 fl_index;
+
+ f->slice_index = slice_index;
+ fss = fsh_slice_get (fs->h, f->slice_index);
+ fss->virtual_mem += svm_fifo_size (f);
+ if (f->flags & SVM_FIFO_F_LL_TRACKED)
+ fss_fifo_add_active_list (fss, f);
+
+ c = f->start_chunk;
+ while (c)
+ {
+ fl_index = fs_freelist_for_size (c->length);
+ clib_atomic_fetch_add_rel (&fss->num_chunks[fl_index], 1);
+ c = c->next;
+ }
+}
+
int
fifo_segment_prealloc_fifo_hdrs (fifo_segment_t * fs, u32 slice_index,
u32 batch_size)
fifo_segment_slice_t *fss;
svm_fifo_t *f;
void *oldheap;
- u32 size;
+ uword size;
u8 *fmem;
int i;
fss = fsh_slice_get (fsh, slice_index);
- size = (sizeof (*f)) * batch_size;
+ size = (uword) (sizeof (*f)) * batch_size;
oldheap = ssvm_push_heap (fsh->ssvm_sh);
fmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
fifo_segment_prealloc_fifo_chunks (fifo_segment_t * fs, u32 slice_index,
u32 chunk_size, u32 batch_size)
{
- u32 size, rounded_data_size, fl_index;
fifo_segment_header_t *fsh = fs->h;
+ u32 rounded_data_size, fl_index;
fifo_segment_slice_t *fss;
svm_fifo_chunk_t *c;
void *oldheap;
+ uword size;
u8 *cmem;
int i;
fl_index = fs_freelist_for_size (chunk_size);
rounded_data_size = fs_freelist_index_to_size (fl_index);
- size = (sizeof (*c) + rounded_data_size) * batch_size;
+ 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,
c->next = fss->free_chunks[fl_index];
fss->free_chunks[fl_index] = c;
cmem += sizeof (*c) + rounded_data_size;
+ fsh_cached_bytes_add (fsh, rounded_data_size);
}
+ fss->num_chunks[fl_index] += batch_size;
fss->n_fl_chunk_bytes += batch_size * rounded_data_size;
fsh_free_bytes_sub (fsh, size);
u32 * n_fifo_pairs)
{
u32 rx_rounded_data_size, tx_rounded_data_size, pair_size, pairs_to_alloc;
+ u32 hdrs, pairs_per_slice, alloc_now;
fifo_segment_header_t *fsh = fs->h;
int rx_fl_index, tx_fl_index, i;
fifo_segment_slice_t *fss;
- u32 hdrs, pairs_per_slice;
uword space_available;
/* Parameter check */
/* Calculate space requirements */
pair_size = 2 * hdrs + rx_rounded_data_size + tx_rounded_data_size;
- space_available = fs_free_space (fs);
+ space_available = fsh_free_space (fsh);
pairs_to_alloc = space_available / pair_size;
pairs_to_alloc = clib_min (pairs_to_alloc, *n_fifo_pairs);
pairs_per_slice = pairs_to_alloc / fs->n_slices;
+ pairs_per_slice += pairs_to_alloc % fs->n_slices ? 1 : 0;
if (!pairs_per_slice)
return;
for (i = 0; i < fs->n_slices; i++)
{
fss = fsh_slice_get (fsh, i);
- if (fs_try_alloc_fifo_batch (fsh, fss, rx_fl_index, pairs_to_alloc))
- clib_warning ("rx prealloc failed: pairs %u", pairs_to_alloc);
- if (fs_try_alloc_fifo_batch (fsh, fss, tx_fl_index, pairs_to_alloc))
- clib_warning ("tx prealloc failed: pairs %u", pairs_to_alloc);
+ alloc_now = clib_min (pairs_per_slice, *n_fifo_pairs);
+ if (fs_try_alloc_fifo_batch (fsh, fss, rx_fl_index, alloc_now))
+ clib_warning ("rx prealloc failed: pairs %u", alloc_now);
+ if (fs_try_alloc_fifo_batch (fsh, fss, tx_fl_index, alloc_now))
+ clib_warning ("tx prealloc failed: pairs %u", alloc_now);
+
+ /* Account for the pairs allocated */
+ *n_fifo_pairs -= alloc_now;
}
-
- /* Account for the pairs allocated */
- *n_fifo_pairs -= pairs_per_slice * fs->n_slices;
-}
-
-int
-fifo_segment_grow_fifo (fifo_segment_t * fs, svm_fifo_t * f, u32 chunk_size)
-{
- fifo_segment_header_t *fsh = fs->h;
- fifo_segment_slice_t *fss;
- svm_fifo_chunk_t *c;
- void *oldheap;
- int fl_index;
-
- fl_index = fs_freelist_for_size (chunk_size);
- fss = fsh_slice_get (fsh, f->slice_index);
-
- oldheap = ssvm_push_heap (fsh->ssvm_sh);
-
- c = fss->free_chunks[fl_index];
-
- if (!c)
- {
- c = svm_fifo_chunk_alloc (chunk_size);
- if (!c)
- {
- ssvm_pop_heap (oldheap);
- return -1;
- }
- fsh_free_bytes_sub (fsh, chunk_size + sizeof (*c));
- }
- else
- {
- fss->free_chunks[fl_index] = c->next;
- c->next = 0;
- fss->n_fl_chunk_bytes -= fs_freelist_index_to_size (fl_index);
- }
-
- svm_fifo_add_chunk (f, c);
-
- ssvm_pop_heap (oldheap);
- return 0;
-}
-
-int
-fifo_segment_collect_fifo_chunks (fifo_segment_t * fs, svm_fifo_t * f)
-{
- fifo_segment_header_t *fsh = fs->h;
- svm_fifo_chunk_t *cur, *next;
- fifo_segment_slice_t *fss;
- void *oldheap;
- int fl_index;
-
- oldheap = ssvm_push_heap (fsh->ssvm_sh);
- cur = svm_fifo_collect_chunks (f);
-
- fss = fsh_slice_get (fsh, f->slice_index);
-
- while (cur)
- {
- next = cur->next;
- fl_index = fs_freelist_for_size (cur->length);
- cur->next = fss->free_chunks[fl_index];
- fss->free_chunks[fl_index] = cur;
- cur = next;
- }
-
- ssvm_pop_heap (oldheap);
-
- return 0;
}
/**
u32
fifo_segment_num_fifos (fifo_segment_t * fs)
{
- return clib_atomic_load_relax_n (&fs->h->n_active_fifos);
+ return fsh_n_active_fifos (fs->h);
}
static u32
void
fifo_segment_update_free_bytes (fifo_segment_t * fs)
{
- fifo_segment_header_t *fsh = fs->h;
- clib_atomic_store_rel_n (&fsh->n_free_bytes, fs_free_space (fs));
+ fsh_update_free_bytes (fs->h);
}
-u32
+uword
+fifo_segment_size (fifo_segment_t * fs)
+{
+ return fs->ssvm.ssvm_size;
+}
+
+u8
+fsh_has_reached_mem_limit (fifo_segment_header_t * fsh)
+{
+ return (fsh->flags & FIFO_SEGMENT_F_MEM_LIMIT) ? 1 : 0;
+}
+
+void
+fsh_reset_mem_limit (fifo_segment_header_t * fsh)
+{
+ fsh->flags &= ~FIFO_SEGMENT_F_MEM_LIMIT;
+}
+
+uword
fifo_segment_free_bytes (fifo_segment_t * fs)
{
return fsh_n_free_bytes (fs->h);
}
+uword
+fifo_segment_cached_bytes (fifo_segment_t * fs)
+{
+ return fsh_n_cached_bytes (fs->h);
+}
+
+uword
+fifo_segment_available_bytes (fifo_segment_t * fs)
+{
+ return fsh_n_free_bytes (fs->h) + fsh_n_cached_bytes (fs->h);
+}
+
uword
fifo_segment_fl_chunk_bytes (fifo_segment_t * fs)
{
u8
fifo_segment_has_fifos (fifo_segment_t * fs)
{
- fifo_segment_header_t *fsh = fs->h;
- fifo_segment_slice_t *fss;
- int slice_index;
-
- for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
- {
- fss = fsh_slice_get (fsh, slice_index);
- if (fss->fifos)
- return 1;
- }
- return 0;
+ return (fsh_n_active_fifos (fs->h) != 0);
}
svm_fifo_t *
return fss->fifos;
}
+u8
+fifo_segment_get_mem_usage (fifo_segment_t * fs)
+{
+ uword size, in_use;
+
+ size = fifo_segment_size (fs);
+ in_use =
+ size - fifo_segment_free_bytes (fs) - fifo_segment_cached_bytes (fs);
+ return (in_use * 100) / size;
+}
+
+fifo_segment_mem_status_t
+fifo_segment_determine_status (fifo_segment_header_t * fsh, u8 usage)
+{
+ if (!fsh->high_watermark || !fsh->low_watermark)
+ return MEMORY_PRESSURE_NO_PRESSURE;
+
+ /* once the no-memory is detected, the status continues
+ * until memory usage gets below the high watermark
+ */
+ if (fsh_has_reached_mem_limit (fsh))
+ {
+ if (usage >= fsh->high_watermark)
+ return MEMORY_PRESSURE_NO_MEMORY;
+ else
+ fsh_reset_mem_limit (fsh);
+ }
+
+ if (usage >= fsh->high_watermark)
+ return MEMORY_PRESSURE_HIGH_PRESSURE;
+
+ else if (usage >= fsh->low_watermark)
+ return MEMORY_PRESSURE_LOW_PRESSURE;
+
+ return MEMORY_PRESSURE_NO_PRESSURE;
+}
+
+fifo_segment_mem_status_t
+fifo_segment_get_mem_status (fifo_segment_t * fs)
+{
+ fifo_segment_header_t *fsh = fs->h;
+ u8 usage = fifo_segment_get_mem_usage (fs);
+
+ return fifo_segment_determine_status (fsh, usage);
+}
+
u8 *
format_fifo_segment_type (u8 * s, va_list * args)
{
u8 *
format_fifo_segment (u8 * s, va_list * args)
{
- u32 count, indent, active_fifos, free_fifos, fifo_hdr = 0, chunk_size;
+ u32 count, indent, active_fifos, free_fifos;
fifo_segment_t *fs = va_arg (*args, fifo_segment_t *);
int verbose __attribute__ ((unused)) = va_arg (*args, int);
- u32 est_chunk_bytes, est_free_seg_bytes, free_chunks;
- uword chunk_bytes = 0, free_seg_bytes;
+ uword est_chunk_bytes, est_free_seg_bytes, free_chunks;
+ uword chunk_bytes = 0, free_seg_bytes, chunk_size;
+ uword tracked_cached_bytes;
+ uword fifo_hdr = 0, reserved;
fifo_segment_header_t *fsh;
fifo_segment_slice_t *fss;
svm_fifo_chunk_t *c;
char *address;
size_t size;
int i;
+ uword allocated, in_use, virt;
+ f64 usage;
+ fifo_segment_mem_status_t mem_st;
indent = format_get_indent (s) + 2;
-#if USE_DLMALLOC == 0
- s = format (s, "%U segment heap: %U\n", format_white_space, indent,
- format_mheap, fsh->ssvm_sh->heap, verbose);
- s = format (s, "%U segment has %u active fifos\n",
- format_white_space, indent, fifo_segment_num_fifos (fsh));
-#endif
if (fs == 0)
{
free_chunks = fifo_segment_num_free_chunks (fs, ~0);
if (free_chunks)
- s = format (s, "\n\n%UFree chunks by size:\n", format_white_space,
- indent + 2);
+ s =
+ format (s, "\n\n%UFree/Allocated chunks by size:\n", format_white_space,
+ indent + 2);
else
s = format (s, "\n");
for (i = 0; i < vec_len (fss->free_chunks); i++)
{
c = fss->free_chunks[i];
- if (c == 0)
+ if (c == 0 && fss->num_chunks[i] == 0)
continue;
count = 0;
while (c)
}
chunk_size = fs_freelist_index_to_size (i);
- s = format (s, "%U%-5u kB: %u\n", format_white_space, indent + 2,
- chunk_size >> 10, count);
+ s = format (s, "%U%-5u kB: %u/%u\n", format_white_space, indent + 2,
+ chunk_size >> 10, count, fss->num_chunks[i]);
chunk_bytes += count * chunk_size;
}
est_free_seg_bytes = fifo_segment_free_bytes (fs);
fifo_segment_update_free_bytes (fs);
free_seg_bytes = fifo_segment_free_bytes (fs);
-
- s = format (s, "\n%Useg free bytes: %U (%u) estimated: %U (%u)\n",
- format_white_space, indent + 2, format_memory_size,
- free_seg_bytes, free_seg_bytes, format_memory_size,
- est_free_seg_bytes, est_free_seg_bytes);
- s = format (s, "%Uchunk free bytes: %U (%lu) estimated: %U (%u)\n",
- format_white_space, indent + 2, format_memory_size, chunk_bytes,
- chunk_bytes, format_memory_size, est_chunk_bytes,
- est_chunk_bytes);
- s = format (s, "%Ufifo hdr free bytes: %U (%u)\n", format_white_space,
- indent + 2, format_memory_size, fifo_hdr, fifo_hdr);
+ tracked_cached_bytes = fifo_segment_cached_bytes (fs);
+ allocated = fifo_segment_size (fs);
+ in_use = fifo_segment_size (fs) - est_free_seg_bytes - tracked_cached_bytes;
+ usage = (100.0 * in_use) / allocated;
+ mem_st = fifo_segment_get_mem_status (fs);
+ virt = fsh_virtual_mem (fsh);
+ reserved = fsh->n_reserved_bytes;
+
+ s = format (s, "\n%Useg free bytes: %U (%lu) estimated: %U (%lu) reserved:"
+ " %U (%lu)\n", format_white_space, indent + 2,
+ format_memory_size, free_seg_bytes, free_seg_bytes,
+ format_memory_size, est_free_seg_bytes, est_free_seg_bytes,
+ format_memory_size, reserved, reserved);
+ s = format (s, "%Uchunk free bytes: %U (%lu) estimated: %U (%lu) tracked:"
+ " %U (%lu)\n", format_white_space, indent + 2,
+ format_memory_size, chunk_bytes, chunk_bytes,
+ format_memory_size, est_chunk_bytes, est_chunk_bytes,
+ format_memory_size, tracked_cached_bytes, tracked_cached_bytes);
+ s = format (s, "%Ufifo active: %u hdr free bytes: %U (%u) \n",
+ format_white_space, indent + 2, fsh->n_active_fifos,
+ format_memory_size, fifo_hdr, fifo_hdr);
+ s = format (s, "%Usegment usage: %.2f%% (%U / %U) virt: %U status: %s\n",
+ format_white_space, indent + 2, usage, format_memory_size,
+ in_use, format_memory_size, allocated, format_memory_size, virt,
+ fifo_segment_mem_status_strings[mem_st]);
s = format (s, "\n");
return s;
Code Review / vpp.git / blobdiff