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authorFlorin Coras <fcoras@cisco.com>2020-12-07 19:38:23 -0800
committerFlorin Coras <florin.coras@gmail.com>2020-12-23 02:28:05 +0000
commit4b8011e72ea22d17942f2e57a34a4fa3a3d81af5 (patch)
tree2187fdda1e67742f45a37f9b9264525911e48716 /src/plugins
parent213b1bb3b9652ce2937e3b47573cc54ee3008387 (diff)
svm: separate private from shared fifo segment ptrs
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Idcc8d862b98dba4a67f829c1778377f35ad47b00
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/unittest/svm_fifo_test.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/src/plugins/unittest/svm_fifo_test.c b/src/plugins/unittest/svm_fifo_test.c
index a223e132d3d..6adba7e8e59 100644
--- a/src/plugins/unittest/svm_fifo_test.c
+++ b/src/plugins/unittest/svm_fifo_test.c
@@ -2103,6 +2103,7 @@ sfifo_test_fifo_segment_hello_world (int verbose)
clib_memset (a, 0, sizeof (*a));
a->segment_name = "fifo-test1";
a->segment_size = 256 << 10;
+ a->segment_type = SSVM_SEGMENT_PRIVATE;
rv = fifo_segment_create (sm, a);
SFIFO_TEST (!rv, "svm_fifo_segment_create returned %d", rv);
@@ -2153,6 +2154,9 @@ sfifo_test_fifo_segment_fifo_grow (int verbose)
a->segment_name = "fifo-test1";
/* size chosen to be able to force multi chunk allocation lower */
a->segment_size = 256 << 10;
+ /* overhead that reduces the amount of space dedicated to fifos */
+ a->segment_size += 1 << 14;
+ a->segment_type = SSVM_SEGMENT_PRIVATE;
/* fifo allocation allocates chunks in batch */
n_batch = FIFO_SEGMENT_ALLOC_BATCH_SIZE;
@@ -2490,6 +2494,7 @@ sfifo_test_fifo_segment_mempig (int verbose)
a->segment_name = "fifo-test1";
a->segment_size = 256 << 10;
+ a->segment_type = SSVM_SEGMENT_PRIVATE;
rv = fifo_segment_create (sm, a);
@@ -2546,18 +2551,21 @@ approx_leq (uword a, uword b, u32 margin)
static int
sfifo_test_fifo_segment_prealloc (int verbose)
{
+ u32 max_pairs, pairs_req, free_space, pair_mem, overhead;
fifo_segment_create_args_t _a, *a = &_a;
fifo_segment_main_t *sm = &segment_main;
- u32 max_pairs, pairs_req, free_space, pair_mem;
svm_fifo_t *f, *tf, *old;
fifo_segment_t *fs;
int rv, alloc;
clib_memset (a, 0, sizeof (*a));
+ /* Overhead due to segment internal headers and offsets. The magic 384
+ * bytes are the fsh->n_reserved_bytes after seg init */
+ overhead = (8 << 10) + 384;
a->segment_name = "fifo-test-prealloc";
- a->segment_size = 256 << 10;
- a->segment_type = SSVM_SEGMENT_MEMFD;
+ a->segment_size = (256 << 10) + overhead;
+ a->segment_type = SSVM_SEGMENT_PRIVATE;
rv = fifo_segment_create (sm, a);
SFIFO_TEST (!rv, "svm_fifo_segment_create returned %d", rv);
@@ -2568,7 +2576,7 @@ sfifo_test_fifo_segment_prealloc (int verbose)
* Prealloc chunks and headers
*/
free_space = fifo_segment_free_bytes (fs);
- SFIFO_TEST (free_space <= 256 << 10, "free space expected %u is %u",
+ SFIFO_TEST (free_space - 4096 <= 256 << 10, "free space expected %u is %u",
256 << 10, free_space);
rv = fifo_segment_prealloc_fifo_chunks (fs, 0, 4096, 50);
SFIFO_TEST (rv == 0, "chunk prealloc should work");
@@ -2591,7 +2599,7 @@ sfifo_test_fifo_segment_prealloc (int verbose)
rv = fifo_segment_free_bytes (fs);
free_space -= sizeof (svm_fifo_t) * 50;
/* Memory alloc alignment accounts for the difference */
- SFIFO_TEST (approx_leq (free_space, rv, 16), "free space expected %u is %u",
+ SFIFO_TEST (approx_leq (free_space, rv, 128), "free space expected %u is %u",
free_space, rv);
free_space = rv;
@@ -2666,7 +2674,6 @@ sfifo_test_fifo_segment_prealloc (int verbose)
*/
fifo_segment_free_fifo (fs, old);
fifo_segment_free_fifo (fs, tf);
- close (fs->ssvm.fd);
fifo_segment_delete (sm, fs);
return 0;
}