remove smp dead code (VPP-1066)

this follows commit 01d86c7f6f05938c7d3fe181bd0aa2f75ccdd1df
which removed many unused functions from smp.h

Change-Id: I3aa0954a5e2319cc526fa68dda113f3cbe063960
Signed-off-by: Gabriel Ganne <gabriel.ganne@enea.com>

1 files changed, 0 insertions, 313 deletions

diff --git a/src/vppinfra/smp_fifo.h b/src/vppinfra/smp_fifo.h
deleted file mode 100644
index c74a77c8e9b..00000000000
--- a/src/vppinfra/smp_fifo.h
+++ /dev/null
@@ -1,313 +0,0 @@
-/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*
-  Copyright (c) 2012 Eliot Dresselhaus
-
-  Permission is hereby granted, free of charge, to any person obtaining
-  a copy of this software and associated documentation files (the
-  "Software"), to deal in the Software without restriction, including
-  without limitation the rights to use, copy, modify, merge, publish,
-  distribute, sublicense, and/or sell copies of the Software, and to
-  permit persons to whom the Software is furnished to do so, subject to
-  the following conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#ifndef included_clib_smp_vec_h
-#define included_clib_smp_vec_h
-
-#include <vppinfra/smp.h>
-
-#define foreach_clib_smp_fifo_data_state	\
-  _ (free)					\
-  _ (write_alloc)				\
-  _ (write_done)				\
-  _ (read_fetch)
-
-typedef enum
-{
-#define _(f) CLIB_SMP_FIFO_DATA_STATE_##f,
-  foreach_clib_smp_fifo_data_state
-#undef _
-    CLIB_SMP_FIFO_N_DATA_STATE,
-} clib_smp_fifo_data_state_t;
-
-/* Footer at end of each data element. */
-typedef struct
-{
-  /* Magic number marking valid footer plus state encoded in low bits. */
-  u32 magic_state;
-} clib_smp_fifo_data_footer_t;
-
-#define CLIB_SMP_DATA_FOOTER_MAGIC 0xfafbfcf0
-
-always_inline clib_smp_fifo_data_state_t
-clib_smp_fifo_data_footer_get_state (clib_smp_fifo_data_footer_t * f)
-{
-  u32 s = f->magic_state - CLIB_SMP_DATA_FOOTER_MAGIC;
-
-  /* Check that magic number plus state is still valid. */
-  if (s >= CLIB_SMP_FIFO_N_DATA_STATE)
-    os_panic ();
-
-  return s;
-}
-
-always_inline void
-clib_smp_fifo_data_footer_set_state (clib_smp_fifo_data_footer_t * f,
-				     clib_smp_fifo_data_state_t s)
-{
-  f->magic_state = CLIB_SMP_DATA_FOOTER_MAGIC + s;
-}
-
-typedef struct
-{
-  /* Read/write indices each on their own cache line.
-     Atomic incremented for each read/write. */
-  u32 read_index, write_index;
-
-  /* Power of 2 number of elements in fifo less one. */
-  u32 max_n_elts_less_one;
-
-  /* Log2 of above. */
-  u32 log2_max_n_elts;
-
-  /* Cache aligned data. */
-  void *data;
-} clib_smp_fifo_t;
-
-/* External functions. */
-clib_smp_fifo_t *clib_smp_fifo_init (uword max_n_elts, uword n_bytes_per_elt);
-
-/* Elements are always cache-line sized; this is to avoid smp cache thrashing. */
-always_inline uword
-clib_smp_fifo_round_elt_bytes (uword n_bytes_per_elt)
-{
-  return round_pow2 (n_bytes_per_elt, CLIB_CACHE_LINE_BYTES);
-}
-
-always_inline uword
-clib_smp_fifo_n_elts (clib_smp_fifo_t * f)
-{
-  uword n = f->write_index - f->read_index;
-  ASSERT (n <= f->max_n_elts_less_one + 1);
-  return n;
-}
-
-always_inline clib_smp_fifo_data_footer_t *
-clib_smp_fifo_get_data_footer (void *d, uword n_bytes_per_elt)
-{
-  clib_smp_fifo_data_footer_t *f;
-  f = d + clib_smp_fifo_round_elt_bytes (n_bytes_per_elt) - sizeof (f[0]);
-  return f;
-}
-
-always_inline void *
-clib_smp_fifo_elt_at_index (clib_smp_fifo_t * f, uword n_bytes_per_elt,
-			    uword i)
-{
-  uword n_bytes_per_elt_cache_aligned;
-
-  ASSERT (i <= f->max_n_elts_less_one);
-
-  n_bytes_per_elt_cache_aligned =
-    clib_smp_fifo_round_elt_bytes (n_bytes_per_elt);
-
-  return f->data + i * n_bytes_per_elt_cache_aligned;
-}
-
-always_inline void *
-clib_smp_fifo_write_alloc (clib_smp_fifo_t * f, uword n_bytes_per_elt)
-{
-  void *d;
-  clib_smp_fifo_data_footer_t *t;
-  clib_smp_fifo_data_state_t s;
-  u32 wi0, wi1;
-
-  wi0 = f->write_index;
-
-  /* Fifo full? */
-  if (wi0 - f->read_index > f->max_n_elts_less_one)
-    return 0;
-
-  while (1)
-    {
-      wi1 = wi0 + 1;
-
-      d =
-	clib_smp_fifo_elt_at_index (f, n_bytes_per_elt,
-				    wi0 & f->max_n_elts_less_one);
-      t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt);
-
-      s = clib_smp_fifo_data_footer_get_state (t);
-      if (s != CLIB_SMP_FIFO_DATA_STATE_free)
-	{
-	  d = 0;
-	  break;
-	}
-
-      wi1 = clib_smp_compare_and_swap (&f->write_index, wi1, wi0);
-
-      if (wi1 == wi0)
-	{
-	  clib_smp_fifo_data_footer_set_state (t,
-					       CLIB_SMP_FIFO_DATA_STATE_write_alloc);
-	  break;
-	}
-
-      /* Other cpu wrote write index first: try again. */
-      wi0 = wi1;
-    }
-
-  return d;
-}
-
-always_inline void
-clib_smp_fifo_write_done (clib_smp_fifo_t * f, void *d, uword n_bytes_per_elt)
-{
-  clib_smp_fifo_data_footer_t *t;
-
-  /* Flush out pending writes before we change state to write_done.
-     This will hold off readers until data is flushed. */
-  CLIB_MEMORY_BARRIER ();
-
-  t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt);
-
-  ASSERT (clib_smp_fifo_data_footer_get_state (t) ==
-	  CLIB_SMP_FIFO_DATA_STATE_write_alloc);
-  clib_smp_fifo_data_footer_set_state (t,
-				       CLIB_SMP_FIFO_DATA_STATE_write_done);
-}
-
-always_inline void *
-clib_smp_fifo_read_fetch (clib_smp_fifo_t * f, uword n_bytes_per_elt)
-{
-  void *d;
-  clib_smp_fifo_data_footer_t *t;
-  clib_smp_fifo_data_state_t s;
-  u32 ri0, ri1;
-
-  ri0 = f->read_index;
-
-  /* Fifo empty? */
-  if (f->write_index - ri0 == 0)
-    return 0;
-
-  while (1)
-    {
-      ri1 = ri0 + 1;
-
-      d =
-	clib_smp_fifo_elt_at_index (f, n_bytes_per_elt,
-				    ri0 & f->max_n_elts_less_one);
-      t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt);
-
-      s = clib_smp_fifo_data_footer_get_state (t);
-      if (s != CLIB_SMP_FIFO_DATA_STATE_write_done)
-	{
-	  d = 0;
-	  break;
-	}
-
-      ri1 = clib_smp_compare_and_swap (&f->read_index, ri1, ri0);
-      if (ri1 == ri0)
-	{
-	  clib_smp_fifo_data_footer_set_state (t,
-					       CLIB_SMP_FIFO_DATA_STATE_read_fetch);
-	  break;
-	}
-
-      ri0 = ri1;
-    }
-
-  return d;
-}
-
-always_inline void
-clib_smp_fifo_read_done (clib_smp_fifo_t * f, void *d, uword n_bytes_per_elt)
-{
-  clib_smp_fifo_data_footer_t *t;
-
-  t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt);
-
-  ASSERT (clib_smp_fifo_data_footer_get_state (t) ==
-	  CLIB_SMP_FIFO_DATA_STATE_read_fetch);
-  clib_smp_fifo_data_footer_set_state (t, CLIB_SMP_FIFO_DATA_STATE_free);
-}
-
-always_inline void
-clib_smp_fifo_memcpy (uword * dst, uword * src, uword n_bytes)
-{
-  word n_bytes_left = n_bytes;
-
-  while (n_bytes_left >= 4 * sizeof (uword))
-    {
-      dst[0] = src[0];
-      dst[1] = src[1];
-      dst[2] = src[2];
-      dst[3] = src[3];
-      dst += 4;
-      src += 4;
-      n_bytes_left -= 4 * sizeof (dst[0]);
-    }
-
-  while (n_bytes_left > 0)
-    {
-      dst[0] = src[0];
-      dst += 1;
-      src += 1;
-      n_bytes_left -= 1 * sizeof (dst[0]);
-    }
-}
-
-always_inline void
-clib_smp_fifo_write_inline (clib_smp_fifo_t * f, void *elt_to_write,
-			    uword n_bytes_per_elt)
-{
-  uword *dst;
-  dst = clib_smp_fifo_write_alloc (f, n_bytes_per_elt);
-  clib_smp_fifo_memcpy (dst, elt_to_write, n_bytes_per_elt);
-  clib_smp_fifo_write_done (f, dst, n_bytes_per_elt);
-}
-
-always_inline void
-clib_smp_fifo_read_inline (clib_smp_fifo_t * f, void *elt_to_read,
-			   uword n_bytes_per_elt)
-{
-  uword *src;
-  src = clib_smp_fifo_read_fetch (f, n_bytes_per_elt);
-  clib_smp_fifo_memcpy (elt_to_read, src, n_bytes_per_elt);
-  clib_smp_fifo_read_done (f, src, n_bytes_per_elt);
-}
-
-#endif /* included_clib_smp_vec_h */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */