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authorDave Barach <dave@barachs.net>2020-11-25 10:07:09 -0500
committerDamjan Marion <dmarion@me.com>2020-11-25 19:01:08 +0000
commitbc867c3d2137dab4b1395196c1936233517980ab (patch)
tree2f0439bc2c6ba0bde5bd3cf3d87723454c74f3d7 /src/vppinfra
parent7483a7272d15354486371be7a20c4bf35ab2eb38 (diff)
vlib: add elog events for vlib log entries
Pretty interesting to see how long plugins take to load. Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: If496eb73b2e1fd9dd714142cd5195fa7ccd93ebd
Diffstat (limited to 'src/vppinfra')
-rw-r--r--src/vppinfra/elog.c23
-rw-r--r--src/vppinfra/elog.h1
2 files changed, 18 insertions, 6 deletions
diff --git a/src/vppinfra/elog.c b/src/vppinfra/elog.c
index 6fa44cb82f9..423d8d5ba15 100644
--- a/src/vppinfra/elog.c
+++ b/src/vppinfra/elog.c
@@ -484,18 +484,29 @@ elog_nsec_per_clock (elog_main_t * em)
&em->init_time));
}
-__clib_export void
-elog_alloc (elog_main_t * em, u32 n_events)
+static void
+elog_alloc_internal (elog_main_t * em, u32 n_events, int free_ring)
{
- if (em->event_ring)
+ if (free_ring && em->event_ring)
vec_free (em->event_ring);
/* Ring size must be a power of 2. */
em->event_ring_size = n_events = max_pow2 (n_events);
- /* Leave an empty ievent at end so we can always speculatively write
- and event there (possibly a long form event). */
- vec_resize_aligned (em->event_ring, n_events, CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (em->event_ring, n_events, CLIB_CACHE_LINE_BYTES);
+ _vec_len (em->event_ring) = n_events;
+}
+
+__clib_export void
+elog_alloc (elog_main_t * em, u32 n_events)
+{
+ elog_alloc_internal (em, n_events, 1 /* free ring */ );
+}
+
+__clib_export void
+elog_resize (elog_main_t * em, u32 n_events)
+{
+ elog_alloc_internal (em, n_events, 0 /* do not free ring */ );
}
__clib_export void
diff --git a/src/vppinfra/elog.h b/src/vppinfra/elog.h
index 93ba4f5e8cc..d0825bdd5b2 100644
--- a/src/vppinfra/elog.h
+++ b/src/vppinfra/elog.h
@@ -526,6 +526,7 @@ void unserialize_elog_main (serialize_main_t * m, va_list * va);
void elog_init (elog_main_t * em, u32 n_events);
void elog_alloc (elog_main_t * em, u32 n_events);
+void elog_resize (elog_main_t * em, u32 n_events);
#ifdef CLIB_UNIX
always_inline clib_error_t *